Journal articles: 'Platform control'

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Griesbach, Kathleen, Adam Reich, Luke Elliott-Negri, and Ruth Milkman. "Algorithmic Control in Platform Food Delivery Work." Socius: Sociological Research for a Dynamic World 5 (January 2019): 237802311987004. http://dx.doi.org/10.1177/2378023119870041.

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Building on an emerging literature concerning algorithmic management, this article analyzes the processes by which food delivery platforms control workers and uncovers variation in the extent to which such platforms constrain the freedoms—over schedules and activities—associated with gig work. Drawing on in-depth interviews with 55 respondents working on food delivery platforms, as well as a survey of 955 platform food delivery workers, we find that although all of the food delivery platforms use algorithmic management to assign and evaluate work, there is significant cross-platform variation. Instacart, the largest grocery delivery platform, exerts a type of control we call “algorithmic despotism,” regulating the time and activities of workers more stringently than other platform delivery companies. We conclude with a discussion of the implications of the spectrum of algorithmic control for the future of work.

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SOBEHART, Lionel, and Hiroyuki HARADA. "2A2-N08 Modular Quadruped Control and Simulation Platform." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2015 (2015): _2A2—N08_1—_2A2—N08_3. http://dx.doi.org/10.1299/jsmermd.2015._2a2-n08_1.

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Kot, Andrzej, and Agata Nawrocka. "Balance Platform Vibration Control." Journal of Low Frequency Noise, Vibration and Active Control 32, no. 3 (September 2013): 227–37. http://dx.doi.org/10.1260/0263-0923.32.3.227.

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Pradhan, S., V. J. Modi, and A. K. Misra. "Tether-platform coupled control." Acta Astronautica 44, no. 5-6 (March 1999): 243–56. http://dx.doi.org/10.1016/s0094-5765(99)00014-4.

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Kim, Heejung, Misun Ahn, Seunghyun Hong, SeungGwan Lee, and Sungwon Lee. "Wearable Device Control Platform Technology for Network Application Development." Mobile Information Systems 2016 (2016): 1–20. http://dx.doi.org/10.1155/2016/3038515.

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Application development platform is the most important environment in IT industry. There are a variety of platforms. Although the native development enables application to optimize, various languages and software development kits need to be acquired according to the device. The coexistence of smart devices and platforms has rendered the native development approach time and cost consuming. Cross-platform development emerged as a response to these issues. These platforms generate applications for multiple devices based on web languages. Nevertheless, development requires additional implementation based on a native language because of the coverage and functions of supported application programming interfaces (APIs). Wearable devices have recently attracted considerable attention. These devices only support Bluetooth-based interdevice communication, thereby making communication and device control impossible beyond a certain range. We propose Network Application Agent (NetApp-Agent) in order to overcome issues. NetApp-Agent based on the Cordova is a wearable device control platform for the development of network applications, controls input/output functions of smartphones and wearable/IoT through the Cordova and Native API, and enables device control and information exchange by external users by offering a self-defined API. We confirmed the efficiency of the proposed platform through experiments and a qualitative assessment of its implementation.

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Yu, Yang, Linfu Sun, and Shuhai Wang. "Tenant-Centric Attribute Semantic Access Control Policy Model for the Cloud Service Platform." Journal of Sensors 2022 (July 4, 2022): 1–16. http://dx.doi.org/10.1155/2022/3314881.

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In the open Internet environment, there is a cross-platform access control problem that when a tenant needs to access the business resources of other collaborative platforms through the cloud service platform, the cloud service platform only supports the tenant to access the business resources within the platform. When tenants need to access business resources through the cloud service platform, the authorization method of the cloud service platform is static and the authorization granularity is coarse-grained, so dynamic fine-grained authorization is not supported. To solve the above problems, based on ABAC, this paper proposes a tenant-centric attribute semantic access control policy model for cloud service platforms. The model and its application framework can automatically evaluate whether it has cloud service platform or cross-platform access control rights according to the change of the tenant’s attributes so as to determine whether it can obtain the corresponding business resources. Through a practical case analysis, we prove that the application of ASACPM and its application framework to the cloud service platform have good flexibility, scalability, and practicability. In addition, we design some experimental scenarios to verify that the performance of ASACPM and its application framework meet our expectations and have good reliability, validity, and rationality.

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Williams, Alex. "Control Societies and Platform Logic." New Formations 84, no. 84 (October 20, 2015): 209–27. http://dx.doi.org/10.3898/newf:84/85.10.2015.

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Horn, B., J. Beran, J. Findejs, V. Havlena, and M. Rozložník. "PLATFORM FOR ADVANCED CONTROL APPLICATIONS." IFAC Proceedings Volumes 38, no. 1 (2005): 161–66. http://dx.doi.org/10.3182/20050703-6-cz-1902.01068.

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Parker, Geoffrey, and Marshall Van Alstyne. "Innovation, Openness, and Platform Control." Management Science 64, no. 7 (July 2018): 3015–32. http://dx.doi.org/10.1287/mnsc.2017.2757.

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Liu, K. H. "Intelligent network control middleware platform." IEEE Communications Magazine 43, no. 5 (May 2005): S11—S18. http://dx.doi.org/10.1109/mcom.2005.1453420.

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APOSTOLESCU, Nicolae, Ion TOMESCU, Dragos Daniel Ion GUTA, and Radu BOGATEANU. "The autonomous control of landing on mobile platforms." INCAS BULLETIN 13, no. 3 (September 4, 2021): 3–12. http://dx.doi.org/10.13111/2066-8201.2021.13.3.1.

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In this paper, we propose a simulation application that allows an aerial vehicle to land autonomously on a moving platform in the presence of uncertainties and disturbances. We have tested our method with various speeds and positions for the landing platform. In the context of this article, the autonomous control of landing on mobile platforms consists in synchronizing the movement of an aerial vehicle with the movement of the mobile platform. As a first step, the Spacelab INCAS laboratory group has developed an offline simulation application that allows an ABB robot to receive information on the movement of a Stewart-type mobile platform in order to conduct a landing process. The application can initiate a landing process on the mobile platform and guide the vehicle for perfect docking on the platform. Offline simulation allows the study of several scenarios of a robot working cell - the mobile platform before setting up the production cell. The offline application has a distributed client-server structure. The client communicates with the server through specific communication protocols. The client and server can reside on the same computer. The client application is developed in the Matlab environment and has as object the simulation and programming of the PS-6TL-1500 platform; the server one simulates and programs an ABB 7600-500/2.55 robot that moves on the track, in the RAPID language under RobotStudio ABB simulator.

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Yang, Suying, Guiyun Cui, and Shaokai Lu. "Ambidextrous learning of engineering project team: Relying on control or BIM AI VR AR MR?" International Journal of Engineering Business Management 12 (January 1, 2020): 184797902094874. http://dx.doi.org/10.1177/1847979020948749.

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Through formal control and social control, technology platforms can acquire the information knowledge needed for ambidextrous learning of engineering project team, but whether technology platforms influence ambidextrous learning of engineering project team through the intermediary role of ambidextrous control (formal control, social control) is still lack of theoretical and empirical support. In order to explore the influence of the co-use of technology platform and ambidextrous control on the ambidextrous learning of engineering project team, this paper constructs a theoretical framework between the performance of ambidextrous control (formal control, social control) and different types of technology platform (BIM, AI, VR, AR, MR) and different types of learning (exploratory learning, exploitative learning). A questionnaire survey was conducted among 210 project managers. AMOS22.0 and bootstrap software were used for analysis and test, SPSS22.0 was used for hierarchical regression analysis, the results of hierarchical regression analysis show that formal control, social control and the balanced use of both have significant positive correlation with the ambidextrous learning and balanced use of ambidextrous learning of engineering project team. Formal Information Technology Platform (BIM) and Informal Information Technology Platform (AI, VR, AR, MR) have significant positive effects on the ambidextrous learning of engineering project team. The balanced use of formal Information Technology Platform (BIM) and informal Information Technology Platform (AI, AR) has significant positive effects on the ambidextrous learning balance of engineering project team. Formal control and social control mediate the positive correlation between information technology platform (BIM, AI, VR, AR, MR) and ambidextrous learning of engineering project team. In addition, information technology platform (BIM, AI, VR) regulates the impact of formal control and social control on learning (exploratory learning, exploitative learning). Generally speaking, different types of technology platforms and ambidextrous control strategies are still effective for the ambidextrous learning and balance of engineering project team.

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Vasquez-Plaza, Jesus D., Andres F. Lopez-Chavarro, Enrique A. Sanabria-Torres, Juan F. Patarroyo-Montenegro, and Fabio Andrade. "Benchmarking Real-Time Control Platforms Using a Matlab/Simulink Coder with Applications in the Control of DC/AC Switched Power Converters." Energies 15, no. 19 (September 22, 2022): 6940. http://dx.doi.org/10.3390/en15196940.

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In the control of DC/AC switched power converters (SPC), one of the most important aspects to be considered is the selection of the real-time control platform. The real-time control platform must be able to meet the high performance efficiency and regulation requirements of the DC/AC SPC, as these typically operate at switching frequencies in the order of kHz to MHz. For this reason, the hardware characteristics of the ADC and PWM, and the processing capacity of the real-time control platform are of vital importance when implementing advanced digital controllers that maintain voltage and current levels within regulatory standards. In this context, we aimed to perform a comparative study of the computation times of different real-time control platforms when implementing different control strategies for DC/AC switched power converters. We also analyzed the impact of the real-time control platforms on the THD of the voltages generated by the DC/AC switched power converters. With the help of this paper, researchers and developers will have criteria to select which real-time control platform to use in real-time control for DC/AC SPC applications.

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He, Zepeng, Xiangchao Feng, Yeqing Zhu, Zhibo Yu, Zhen Li, Yan Zhang, Yinhang Wang, Pengfei Wang, and Liangyu Zhao. "Progress of Stewart Vibration Platform in Aerospace Micro–Vibration Control." Aerospace 9, no. 6 (June 15, 2022): 324. http://dx.doi.org/10.3390/aerospace9060324.

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In order to support the development of high–precision spacecraft, the current state of the Stewart vibration isolation platform in the field of aerospace micro–vibration was surveyed. First, based on analyses of the causes and characteristics of spacecraft micro–vibration, the principles, characteristics, advantages and disadvantages of four vibration isolation technologies are summarized. Second, the development process of the Stewart vibration isolation platform, from structural proposal and theoretical calculation to application in various fields, is introduced. Then, the current state of kinematics, dynamics and braking control algorithms of the Stewart platform is investigated, and related work on rigid/flexible platforms in the field of aerospace micro–vibration is introduced in detail. Finally, the idea that the Stewart platform can be fabricated by 4D printing technology is proposed. The novel Stewart platform can be combined with artificial intelligence algorithms and advanced control strategies, allowing for further development in the direction of an integrated omnidirectional, full–frequency and multi–function platform with variable stiffness.

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Brugière, Fabien. "Connecting the Levers of Platform Control." South Atlantic Quarterly 120, no. 4 (October 1, 2021): 809–22. http://dx.doi.org/10.1215/00382876-9443364.

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Drawing from a transurban field research conducted in the ride-hailing sector in Paris and Brussels regions, this article investigates platformization as a productive model defined by the articulation of an outsourced labor regime with an algorithmic and data-driven type of management. Beyond the formal sharing of an independent contractor status, nuanced by a variety of positions including salaried work, platform drivers are unified in practice by their common economic dependence on platforms. This situation gives them the role of an adjustment variable in platforms’ commercial strategy, forcing them to raise their work time to adapt to the cost decreases in the mid-2010s, which dramatically reduced their income. To ensure a flexible flow into the workforce, platforms have favored the development of small intermediaries to outsource hiring and thereby skirt labor law and evade taxes. Market pressure is also enforced by its inclusion, with other productive goals such as service fluidity and quality, into a digital model of management inspired by lean production. The application is configured to operate as a device of technical and hegemonic control that incorporates just-in-time and intensification commands. Digital control is completed by the inclusion of a customer feedback system used to implement service standardization and further involvement in work.

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Benlian, Alexander, Daniel Hilkert, and Thomas Hess. "How open is this Platform? The Meaning and Measurement of Platform Openness from the Complementers’ Perspective." Journal of Information Technology 30, no. 3 (September 2015): 209–28. http://dx.doi.org/10.1057/jit.2015.6.

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Software platforms’ success largely depends on complementors’ willingness to repeatedly invest their time and effort to the development of platform applications that attract users and increase the platform's installed base. But how can platform providers encourage desirable behaviours by complementors (i.e., application developers) in the absence of formal roles and hierarchical control structures? Although previous studies of software-based platforms have identified openness as critical instrument at the macro (i.e., platform) level and have provided initial attempts to measure the construct, no research has been dedicated to comprehensively conceptualize and operationalize platform openness at the micro level from the perspective of application developers. To go beyond these preliminary findings and to theorize about the nature and effects of platform openness as perceived by application developers, we develop a construct called perceived platform openness (PPO). Drawing on recently advanced scale development methodologies, we conceptualize PPO as a multidimensional construct and empirically validate it with important consequent variables linked to developers’ continuous platform contributions. Empirical evidence from several rounds of qualitative and quantitative steps supports the conceptual validity of the construct and empirical relevance of the scale across different smartphone platform contexts (i.e., Apple iOS and Google Android). Researchers will benefit from the study's systematic and comprehensive conceptualization of PPO, how it is measured, and how it relates to critical application developer beliefs and attitudes. Platform managers may use our results to target the underlying facets of PPO most likely to contribute to the platform's long-term goals.

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Wang, Na, Yuan Du, Qingtao Gong, Ning Liu, and Yao Teng. "Research on the low-frequency multiline spectrum vibration control of offshore platforms." REVIEWS ON ADVANCED MATERIALS SCIENCE 61, no. 1 (January 1, 2022): 55–67. http://dx.doi.org/10.1515/rams-2021-0075.

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Abstract With the increasing scale, complexity and diversity of supporting equipment of offshore platform, the low-frequency vibration of equipment such as dynamic positioning system and the main engine is difficult to attenuate in the propagation process of the platform structure, which causes a local resonance of platform, aggravates the fatigue damage of structure and causes discomfort to the human body. Dynamic vibration absorption is widely used in the low-frequency vibration control of offshore platforms; however, there is little research about the multiline spectrum vibration control method in the local resonance region of platforms. In the current research, we first take the stiffened plate under multipoint excitation as the research object, and the effectiveness of the optimal homology design method of dynamic vibration absorption is verified. Subsequently, the low-frequency multiline spectrum vibration control method about the local resonance region of the offshore platform is proposed. Finally, a large offshore platform is chosen as the research object and the measured load of the main engine is taken as the input to calculate the vibration response of the platform. The effect of distributed dynamic vibration absorption of the resonance area verifies the effectiveness of the vibration control method presented in the article and provides a basis for the engineering application.

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Leng, Dingxin, Haiyan Xiao, Lei Sun, Guijie Liu, Xiaojie Wang, and Lingyu Sun. "Study on a magnetorheological elastomer-base device for offshore platform vibration control." Journal of Intelligent Material Systems and Structures 30, no. 2 (November 14, 2018): 243–55. http://dx.doi.org/10.1177/1045389x18808398.

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Wave loading is one of the leading factors contributing to fatigue damage of offshore platforms. Vibrations in marine platforms due to nonlinear hydrodynamic forces can reduce platform productivity, endanger safety, and affect serviceability. This article presents numerical evaluation of a magnetorheological elastomer device for wave-induced vibration reduction of offshore platform. Random wave loadings are estimated by wave spectrum analysis and Morison’s equations. By altering field-induced stiffness of magnetorheological elastomers and non-resonance control strategy, the wave-induced vibration of offshore platform is effectively reduced, and the magnetorheological elastomer device presents strong control robustness under various wave loadings. This work indicates that magnetorheological elastomer-base device may open a new insight for vibration mitigation of ocean structures.

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Cavalcanti, João, Luis FC Figueredo, João Y. Ishihara, Mariana C. Bernardes, Pedro HRQA Santana, Alessandro N. Vargas, and Geovany A. Borges. "A real-time web-based networked control system education platform." International Journal of Electrical Engineering & Education 55, no. 2 (February 20, 2018): 130–41. http://dx.doi.org/10.1177/0020720917750952.

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Networked control systems have recently experienced a surge in fundamental theoretical results ignited by numerous advantages of introducing shared multipurpose communication networks in control systems. Regarding developments on the practical side, however, a networked control system is still wanting when it comes to experimental platforms suitable for research and educational purposes, which contributes to most of networked control system theory being validated by means of numerical examples and simulations. This paper addresses this issue by presenting a low-cost real-time networked control system platform, based on custom hardware and software solutions that can be readily explored with the sole use of a web browser connected to the Internet. The technical decisions made during development represent a fundamentally novel take on networked control system experimental platforms that can potentially be reproduced by several universities. The platform provides the user with multiple controller and input reference options, network configurations, delay statistics, and even a downloadable file containing advanced experiment data. A survey conducted with students located over 1200 km away from the platform who used it during laboratory assignments highlight the system’s usability and interactivity, and supports the platform is suitable for educational purposes.

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Munoz, Isabel, Michael Dunn, Steve Sawyer, and Emily Michaels. "Platform-mediated Markets, Online Freelance Workers and Deconstructed Identities." Proceedings of the ACM on Human-Computer Interaction 6, CSCW2 (November 7, 2022): 1–24. http://dx.doi.org/10.1145/3555092.

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We advance the concept of deconstructed identity to explain how online workers' identities are being reshaped, diminished and controlled by digital labor platforms. We focus on online freelance workers and contribute to contemporary conceptualizations regarding worker's self-presentation. The empirical basis for our analysis and theorizing build from two rounds of a longitudinal panel study of online freelance workers and their interactions with online labor platforms. Findings illuminate how online freelancer's identity presentation is constrained by the structuring of their profile, the ratings and client feedback, the algorithms used by the digital platform, and platform's terms of use. Data demonstrate that workers' profiles are focused on skills, reflecting the realities of competing for work in under-regulated labor markets. Study participants report the centrality of client and platform ratings of their work, and the need to manage client feedback and ratings as a core part of their online identity presentation. These findings suggest that, far from a subjective and personal story, a freelancer's identity on a digital labor platform is better understood as a standardized depiction of skills, ratings, and metrics controlled by platform algorithms. Coupled with use policies and evolving platform designs, this platform control creates what seems to be a form of indentured servitude. We further note online freelancers both recognize this control and resist their deconstructed identity.

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Choi, Jiwook, Donghun Cheon, and Jangmyung Lee. "Robust Landing Control of a Quadcopter on a Slanted Surface." International Journal of Precision Engineering and Manufacturing 22, no. 6 (April 19, 2021): 1147–56. http://dx.doi.org/10.1007/s12541-021-00523-z.

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AbstractA robust landing control algorithm is proposed for a quadcopter, as well as for a landing platform to land on an inclined or problematic surface. To use the quadcopter for outdoor application, it is necessary to design a landing platform that can withstand environmental obstacles such as wind and weight load during landing. Conventional retractor landing platforms are not suitable for achieving a stable landing on inclined surfaces or obstacles. Therefore, in this paper, 2-link structured landing legs are applied to stably land on an inclined surface or obstacle with a suitable control algorithm. To achieve stable landing on a slanted surface, a cooperative control algorithm of the quadcopter and the landing platform has been proposed. The proposed robust landing system comprises two controllers, i.e., a high-speed proportional derivative control for the landing platform and a neural network-based proportional–integral–derivative control for controlling the quadcopter in real time. A quadcopter with a robust landing platform has been implemented, and the performance of the robust landing control algorithm has been demonstrated with the system.

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Montagna, Paul A., Stephen C. Jarvis, and Mahlon C. Kennicutt, II. "Distinguishing between contaminant and reef effects on meiofauna near offshore hydrocarbon platforms in the Gulf of Mexico." Canadian Journal of Fisheries and Aquatic Sciences 59, no. 10 (October 1, 2002): 1584–92. http://dx.doi.org/10.1139/f02-131.

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Offshore hydrocarbon production effects are localized in the Gulf of Mexico extending only 200 m from platforms. Effects are caused by the contaminant gradient or the fouling community on platform legs. To distinguish between contaminant and reef effects, meiofauna were sampled at production platforms (reef and contaminant effects), artificial reefs (reef, but no contaminant effects), platform removal sites (contaminant, but no reef effects), and controls (no contaminants or reef effects), and replicated in three blocks. The removal sites had higher concentrations of many contaminants than reef or control sites, but lower concentrations than platform sites. Reduced meiobenthic abundances and altered Harpacticoida community structure were primarily a function of reef effects, not contaminant effects. The habitat influence is likely a result of complex ecological interactions near platforms. The reef effect appears to be important in controlling meiofauna near platforms where contaminants are low because of drilling and production techniques used in the Gulf of Mexico. The finding that contaminants alone do not explain faunal patterns around offshore platforms indicates that future studies should include appropriate artificial reef control sites.

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Zhou, Qing. "Interference signal control algorithm for mechatronics electrical control platform." Journal of Discrete Mathematical Sciences and Cryptography 20, no. 6-7 (October 3, 2017): 1411–15. http://dx.doi.org/10.1080/09720529.2017.1392455.

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Song, Juan, and Ming Li. "Numerical Control Machines Performance Test Platform." Applied Mechanics and Materials 214 (November 2012): 840–44. http://dx.doi.org/10.4028/www.scientific.net/amm.214.840.

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Research on the dynamic performance testing test platform of numerical control equipment high-grade guarantee numerical control machine running reliable quality and machining, effectively predict the occurrence of equipment failure and effective, and save a lot of the cost of maintenance, improve the level of management of equipment. It has a very important significance are safe and reliable, and the production of numerical control equipment and modern scientific maintenance and management. The purpose of the research is to provide test equipment work show high-grade numerical control machine dynamic performance, another purpose of study is to provide the critical test technology, and reveals the dynamic performance of faults and development, the deterioration of the accuracy of the factors that lead.

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Popescu, D., and C. Dimon. "MULTIVARIABLE CONTROL ON A COMPLEX PLATFORM." IFAC Proceedings Volumes 40, no. 18 (September 2007): 241–46. http://dx.doi.org/10.3182/20070927-4-ro-3905.00041.

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SOUSA, Álan C. E., Valter J. S. LEITE, and Ignacio RUBIO SCOLA. "Affordable Control Platform with MPC Application." Studies in Informatics and Control 27, no. 3 (October 9, 2018): 265–74. http://dx.doi.org/10.24846/v27i3y201802.

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Widyatri, Irwanto, Afan Galih Salman, and Bayu Kanigoro. "Parental control application on Android platform." Library Hi Tech News 35, no. 1 (March 5, 2018): 18–24. http://dx.doi.org/10.1108/lhtn-08-2017-0057.

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Purpose The purpose of this study is to build the Android-based applications for parent to supervise, control and restrict the children’s usage of the smartphone and tablet. Design/methodology/approach The method used is the method of analysis, i.e. collection of necessary data. The data are collected from journals, articles, books, questionnaires and the similar application analysis. Findings The GPS tracking feature of the parental control application facilitates searching the children’s location by indicating the location where they used their Android device. The history feature of the parental control facilitates finding out what application was accessed by their children through their Android-based application, and the time limit feature of the parental control application facilitates restriction on time that the children spend on their Android-based gadgets, so that they will not be addicted to the gadget. Originality/value The parental control application for the Android platform provides users or parents a means for managing the young generation’s usage of an Android-based mobile device.

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Zolnay, András, András Lassó, Hassan Charaf, and István Vajk. "Configurable Remote, Platform Independent Control System." IFAC Proceedings Volumes 33, no. 31 (December 2000): 319–24. http://dx.doi.org/10.1016/s1474-6670(17)37882-5.

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Kanchanasaratool, Narongsak, and Darrell Williamson. "Motion control of a tensegrity platform." Communications in Information and Systems 2, no. 3 (2002): 299–324. http://dx.doi.org/10.4310/cis.2002.v2.n3.a6.

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Tymoshenko, Serhii V. "Electronic Control of Platform with Payload." Electronic and Acoustic Engineering 3, no. 1 (March 31, 2020): 29–33. http://dx.doi.org/10.20535/2617-0965.2020.3.1.198572.

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De Luca, Alessandro, Raffaella Mattone, Paolo Robuffo Giordano, Heinz Ulbrich, Martin Schwaiger, Michael Van den Bergh, Esther Koller-Meier, and Luc Van Gool. "Motion Control of the CyberCarpet Platform." IEEE Transactions on Control Systems Technology 21, no. 2 (March 2013): 410–27. http://dx.doi.org/10.1109/tcst.2012.2185051.

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Ghataure, H. S., S. M. Holder, and D. Ramsden. "A transferable digital platform control system." Advances in Space Research 14, no. 2 (February 1994): 121–25. http://dx.doi.org/10.1016/0273-1177(94)90078-7.

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Xie, Shouyong, Xiwen Li, Mingjin Yang, and Shuzi Yang. "Control algorithm of a servo platform." Frontiers of Mechanical Engineering in China 5, no. 3 (June 5, 2010): 353–55. http://dx.doi.org/10.1007/s11465-010-0098-6.

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Tunstel, Eddie, Steve Hockemeier, and Mo Jamshidi. "Fuzzy control of a hovercraft platform." Engineering Applications of Artificial Intelligence 7, no. 5 (October 1994): 513–19. http://dx.doi.org/10.1016/0952-1976(94)90030-2.

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Zhang, Ji Gang, and Qun Niu. "Research on Vibration Control of Offshore Platform Based on Self-Recentering Rocking Wall." Applied Mechanics and Materials 610 (August 2014): 173–77. http://dx.doi.org/10.4028/www.scientific.net/amm.610.173.

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Self-recentering rocking wall is used in JZ20-2 north high wellhead platform, making simulation analysis to the whole structure subjected to ice load and earthquake load by the finite element software ANSYS, then analyses the nodal displacement and acceleration responses under the condition of different platform rocking wall stiffness, different floating box’s location, different buoyancy case. The results show that stiffness is the main factor affecting the seismic performance of offshore platforms, floating box can effectively reduce the dynamic response of offshore platform.

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Cameron, Lindsey D., and Hatim Rahman. "Expanding the Locus of Resistance: Understanding the Co-constitution of Control and Resistance in the Gig Economy." Organization Science 33, no. 1 (January 2022): 38–58. http://dx.doi.org/10.1287/orsc.2021.1557.

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Existing literature examines control and resistance in the context of service organizations that rely on both managers and customers to control workers during the execution of work. Digital platform companies, however, eschew managers in favor of algorithmically mediated customer control—that is, customers rate workers, and algorithms tally and track these ratings to control workers’ future platform-based opportunities. How has this shift in the distribution of control among platforms, customers, and workers affected the relationship between control and resistance? Drawing on workers’ experiences from a comparative ethnography of two of the largest platform companies, we find that platform use of algorithmically mediated customer control has expanded the service encounter such that organizational control and workers’ resistance extend well beyond the execution of work. We find that workers have the most latitude to deploy resistance early in the labor process but must adjust their resistance tactics because their ability to resist decreases in each subsequent stage of the labor process. Our paper, thus, develops understanding of resistance by examining the relationship between control and resistance before, during, and after a task, providing insight into how control and resistance function in the gig economy. We also demonstrate the limitations of platforms’ reliance on algorithmically mediated customer control by illuminating how workers’ everyday interactions with customers can influence and manipulate algorithms in ways that platforms cannot always observe.

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Ku, Sang-Wuk, and Dong-Sung Cho. "Platform Strategy: An Empirical Study on the Determinants of Platform Selection of Application Developers." Journal of International Business and Economy 12, no. 1 (July 1, 2011): 123–43. http://dx.doi.org/10.51240/jibe.2011.1.6.

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This paper is to prove empirically that the cooperative business structure and conflict control capability of a platform leader and that the complementarity of a platform will have positive impacts on whether complementors select specific platforms in 245 platform selection examples of 99 application developers. Past research has not been sufficient regarding platform selection, but has been similar to other research on ERP platforms. Therefore, it is very meaningful to make an empirical study on the platform selection of complementors, which has not yet been performed. As a result, it is important for platform leaders to establish their own cooperative business structures and secure the complementarity of their platforms. Therefore, platform leaders should create more transaction opportunities by helping complementors to develop more complements and making business ecosystems grow more and more.

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Lei, Ya-Wen. "Delivering Solidarity: Platform Architecture and Collective Contention in China’s Platform Economy." American Sociological Review 86, no. 2 (February 12, 2021): 279–309. http://dx.doi.org/10.1177/0003122420979980.

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This study examines how and when labor control and management leads to collective resistance in China’s food-delivery platform economy. I develop the concept of “platform architecture” to examine the technological, legal, and organizational aspects of control and management in the labor process and the variable relationships between them. Analyzing 68 in-depth interviews, ethnographic data, and 87 cases of strikes and protests, I compare the platform architecture of service and gig platforms and examine the relationship between their respective architecture and labor contention. I argue that specific differences in platform architecture diffuse or heighten collective contention. Within the service platform, technological control and management generates work dissatisfaction, but the legal and organizational dimensions contain grievances and reduce the appeal of, and spaces for, collective contention. Conversely, within the gig platform, all three dimensions of platform architecture reinforce one another, escalating grievances, enhancing the appeal of collective contention, and providing spaces for mobilizing solidarity and collective action. As a result, gig platform couriers are more likely to consider their work relations exploitative and to mobilize contention, despite facing higher barriers to collective action due to the atomization of their work.

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Zeng, Ji Guo, Jing Yu Liu, and Qiang Yu. "Design and Development of 6DOF Hydraulic Motion Platform for Vehicle Driving Simulator." Applied Mechanics and Materials 505-506 (January 2014): 315–18. http://dx.doi.org/10.4028/www.scientific.net/amm.505-506.315.

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The high-level driving simulators generally involve motion platform. This paper describes the design and development of a 6DOF hydraulic motion platform for vehicle driving simulator. Firstly, the structure and kinematic model of the platform are introduced. Then, the speed characteristics of the hydraulic cylinders by using different positive and negative voltage are studied. Because the cylinder startup time and hydraulic pump pressure will both affect the platform's final position, so a real-time platform control method according the sensor feedback is described. Finally, commonly used control functions of the platform are listed. The simulator and the motion platform run well by using this control method.

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Li, Quanchao, Shuyan Xu, Yulei Xu, Lei Li, and Liu Zhang. "Nonorthogonal Aerial Optoelectronic Platform Based on Triaxial and Control Method Designed for Image Sensors." Sensors 20, no. 1 (December 18, 2019): 10. http://dx.doi.org/10.3390/s20010010.

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A traditional aerial optoelectronic platform consists of inside and outside multilayer gimbals, while an internal gimbal and drive components occupy the internal space where optical sensors are located. In order to improve the replaceability of optical sensors and to increase their available space, this paper introduces a nonorthogonal aerial optoelectronic platform based on three axes; we carried out research on its drive control method. A three-dimensional structure of an aerial optoelectronic platform was designed. A noncontact drive of a linear voice coil motor was introduced, and a drive control scheme of a proportional integral and a disturbance observer was adopted. Finally, simulations and experiments were carried out. Results showed that the aerial optoelectronic platform could effectively release three times the image sensor space, and the servo bandwidth was 60.2 Hz, which was much better than that of traditional two-axis and four-gimbal platforms. The stability accuracy of the system reached 4.9958 micron rad, which was obviously better than that of traditional gimbals. This paper provides a reference for the design of new optoelectronic platforms.

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Gui, Yunmiao, and Bengang Gong. "Quality Assurance Competition Strategy under B2C Platform." Discrete Dynamics in Nature and Society 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/6587872.

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This paper examines the platform competition strategy in offering quality assurance policy based on two-sided B2C markets with buyers and sellers who trade through the B2C platform. We model this as a strategy decision whether control rights of quality assurance level are better held by the seller or by the platform. Whether the seller or the platform that provides quality assurance policy is preferred depends on their influence on network effects. We show that the seller and the platform have no strong intention to improve the quality assurance level in the monopoly markets. When all buyers multihome and all sellers single-home, sellers who hold the control rights of quality assurance are better than platforms. However, platforms that hold quality assurance drive more profits than sellers in the B2C markets where all buyers and all sellers multihome. Our findings connect platform competitive strategies to market and microfoundation of quality, which applies directly to managerial decisions in the B2C two-sided platform.

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Möhlmann, Mareike, Lior Zalmanson, Ola Henfridsson, and Robert Wayne Gregory. "Algorithmic Management of Work on Online Labor Platforms: When Matching Meets Control." MIS Quarterly 45, no. 4 (October 14, 2021): 1999–2022. http://dx.doi.org/10.25300/misq/2021/15333.

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Online labor platforms (OLPs) can use algorithms along two dimensions: matching and control. While previous research has paid considerable attention to how OLPs optimize matching and accommodate market needs, OLPs can also employ algorithms to monitor and tightly control platform work. In this paper, we examine the nature of platform work on OLPs, and the role of algorithmic management in organizing how such work is conducted. Using a qualitative study of Uber drivers’ perceptions, supplemented by interviews with Uber executives and engineers, we present a grounded theory that captures the algorithmic management of work on OLPs. In the context of both algorithmic matching and algorithmic control, platform workers experience tensions relating to work execution, compensation, and belonging. We show that these tensions trigger market-like and organization-like response behaviors by platform workers. Our research contributes to the emerging literature on OLPs.

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Krijestorac, Haris, Rajiv Garg, and Vijay Mahajan. "Cross-Platform Spillover Effects in Consumption of Viral Content: A Quasi-Experimental Analysis Using Synthetic Controls." Information Systems Research 31, no. 2 (June 2020): 449–72. http://dx.doi.org/10.1287/isre.2019.0897.

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To inform product release and distribution strategies, research has analyzed cross-market spillovers in new product adoption. However, models that examine these effects for digital and viral media are still evolving. Given resistance to advertising, firms often seek to promote their own viral content to boost brand awareness. However, a key shortcoming of virality is its ephemeral nature. To gain insight into sustaining virality, we develop a quasi-experimental approach that estimates the backward spillover onto a focal platform by introducing a piece of content onto a new platform. We posit that introducing content to the audience of a new platform can generate word of mouth, which may affect its consumption within an earlier platform. We estimate these spillovers using data on 381 viral videos on 26 platforms (e.g., YouTube, Vimeo) and observe how consumption of videos on an initial “lead” platform is affected by their subsequent introduction onto “lag” platforms. This spillover is estimated as follows: for each multiplatform video, we compare its view growth after being introduced onto a new platform to that of a synthetic control based on similar single-platform videos. Analysis of 275 such spillover scenarios reveals that introducing a video onto a lag platform roughly doubles its subsequent view growth in the lead platform. This positive cross-platform spillover is persistent, bursty, and strongest in the first 42 days. We find that spillover is boosted when the video is consumed more in the lag platform, when the consumption rate peaks earlier in the lag platform, and when the lag platform targets a foreign market. Our findings suggest that firms can sustain the popularity of their viral content by introducing it onto additional platforms (e.g., Vimeo) after posting it on a focal platform (e.g., YouTube). As a result of their posting on the latter platforms, firms can expect subsequent view growth on the focal platform to roughly double. The aforementioned benefits persists for up to five lag platforms. Platforms should also consider that a positive cross-platform spillover may help platforms reinforce each other’s usage, rather than cannibalize each other.

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Bartnicki, Adam, Piotr Sprawka, and Arkadiusz Rubiec. "Remote Control System for Rescue Robot." Solid State Phenomena 210 (October 2013): 294–300. http://dx.doi.org/10.4028/www.scientific.net/ssp.210.294.

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Unmanned ground platforms are increasingly used to perform tasks under direct threat to the operators life and health. Separating an operator from a controlled machine places high demands to its steering system. The requirement of reliability put to such platforms in terms of potential threats makes their steering systems being very precise controlled and tested at the stage of construction. The key element in the steering process of unmanned ground platforms are surroundings display systems which determine the success of conducting rescue operations. This paper presents an unmanned ground platform controlled by remote operator and describes some of the functionality tests of the remote control system. Keywords: Robot, Remote Control, Vision System, Teleoperation

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Wang, Jianjun, Jingyi Zhao, Wei Cai, Wenlei Li, Xing Jia, and Peng Wei. "Leveling Control of Vehicle Load-Bearing Platform Based on Multisensor Fusion." Journal of Sensors 2021 (January 4, 2021): 1–7. http://dx.doi.org/10.1155/2021/8895459.

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In the large-scale transportation, the leveling of the transport vehicle loading platform will determine the safety of the transportation. Therefore, the research on the leveling of the transport vehicle loading platform with hydraulic suspension is carried out. The hydraulic suspension systems are simplified as four-point support. Based on the multisensor data collected by the pressure sensors of the suspension hydraulic cylinders and the double axis inclination sensor of the load-bearing platform, the leveling control system of the four-point load-bearing platform is designed according to the principle of the highest point chasing. In order to verify the precision of the leveling method, the leveling of the control system is simulated by using the software AMESim and MATLAB, and the PID controller is added. The results show that the leveling precision and velocity of this method fully meet the leveling requirements of the transport vehicle. On the basis, the leveling control system for the 100 ton transport vehicle is designed. The double axis inclination sensor is used to monitor the tilt angle of the loading platform in real time. The controller can make the suspension hydraulic cylinders act accordingly according to the four height differences to keep the loading platform level. Finally, the leveling experiment of the transport vehicle is carried out, and the lifting experiment is carried out under the condition of no load to full load. It is concluded that the displacement of the four points of the load-bearing platform of the transport vehicle is basically the same. The leveling control system can control the inclination angle of the platform within 0.25 degrees, and the leveling time is less than 1 second. The leveling process has higher precision and shorter time than other methods, which can provide reference for the leveling design of similar platforms.

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Wiharti, Wiwik, Santi Anggraini, and Ihsan Lumasa Rimra. "The Performance of Controlling Cannon Barrel Position on the Moving Platform Using Neural Network Control and Sliding Mode Control." International Journal of Computer Theory and Engineering 7, no. 6 (December 2015): 476–81. http://dx.doi.org/10.7763/ijcte.2015.v7.1005.

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Wessel, Michael, Ferdinand Thies, and Alexander Benlian. "Opening the Floodgates: The Implications of Increasing Platform Openness in Crowdfunding." Journal of Information Technology 32, no. 4 (December 2017): 344–60. http://dx.doi.org/10.1057/s41265-017-0040-z.

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Managing platform ecosystems requires providers to govern the permeability of platform boundaries in order to strike a balance between openness and control. But is it worthwhile for platform providers to conduct screening processes for third-party offerings, or should they rather apply a laissez-faire approach and let the market determine winners and losers? In this study, we compare the market conditions on Kickstarter, one of the world's largest crowdfunding platforms, before and after a policy change that relaxed the previously stringent screening process for new campaigns. By analyzing over 230,000 crowdfunding campaigns with a combined funding of over $1.9 billion that cover a 4-year period around the policy change, we find that increasing platform openness was a double-edged sword for the platform's ecosystem. While Kickstarter's revenue from commissions surged after the policy change due to an increase in the number of campaigns available on the platform, funding conditions for project creators and backers deteriorated. Project creators have to cope with lower success rates and an intensified competition due to a growing disproportion of backers to campaigns, while backers face higher uncertainties as project creators invest less in reducing information asymmetries. Our evidence from this natural experiment therefore suggests that increasing platform openness for third-party offerings can destabilize a platform's ecosystem. We thus extend the literature on platform openness and on the implications of policy changes on platform ecosystems. Our findings also provide practical insights for different platform stakeholders into possible “ripple effects” that are triggered when policy changes alter platform openness.

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Liu, Yan Yan, Guo Ning Li, and Li Feng Wang. "The Design and Implementation of Positioning System Based on GPS." Applied Mechanics and Materials 602-605 (August 2014): 2748–51. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.2748.

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This paper studies and implementation of positioning system based on GPS.The system consists of hardware platforms, positioning terminal software, positioning and monitoring service center. One of positioning terminal is based on Samsung's S3C2440 ARM9 processor, G600 communication module and u-blox GPS positioning module. Positioning terminal software Linux-based development of embedded real-time operating system, it's multi-tasking, real-time characteristics of software provides a good platform. Running on the Linux operating system is the terminal software, by driving the hardware platforms and Linux, the terminal software to complete the GPS positioning, and communications with control centers and other functions. The second type of positioning terminal is based on Android platform for mobile phones and other android pads. Such terminals can use the rich resources of the Android platform to achieve the map display, GPS positioning, communications with control centers. Monitoring platform is a GIS-based management platform, including the integration of the electronic map, and track positioning terminal location query.

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Crenganis, Mihai, Radu Eugen Breaz, Gabriel Racz, and Octavian Bologa. "Zigler-Nicols PID Tuning Method for Position Control of a Mobile Robot." Applied Mechanics and Materials 841 (June 2016): 221–26. http://dx.doi.org/10.4028/www.scientific.net/amm.841.221.

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This paper presents the implementation and the tuning of PID controller for a mobile platform with differential steering. It presents a mobile platform built in the Department of Industrial Machinery & Equipment, of the Engineering Faculty of Sibiu for an European contest. In a first phase, a brief introduction to PID controller is made, followed by a description of the various robot's components and traction principles underlying locomotion of mobile platforms. At the end the paper contains several principles of tuning the PID controller for the mobile robot.

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ANUAR, SITI MASALIZA, and MOHD ASAMUDIN A RAHMAN. "PASSIVE CONTROL OF VORTEX-INDUCED MOTIONS ON DEEP-DRAFT SEMISUBMERSIBLE PLATFORMS." Universiti Malaysia Terengganu Journal of Undergraduate Research 4, no. 2 (August 11, 2022): 23–36. http://dx.doi.org/10.46754/umtjur.v4i2.272.

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The deep-draft semisubmersible (DDSS) platform is well known due to its favourable vertical motion routine. However, DDSS platforms face a serious challenge in vortex-induced motion (VIM) due to the changing forces of the column. A computational fluid dynamic (CFD) simulation using AcuSolve is conducted to investigate the effect of a twisted-square column with different twisted angles, 0°, 22.5°, 45.0°, 67.5° and 90.0°, on the VIM responses and performance at current incidence angles of 0° and 45°.Platform models at a scale of 1:70 are studied to determine that the alteration of vortex shedding due the separation line at the twisted column expressively influences the mean and fluctuation of hydrodynamic forces and motion. In particular interest is the drag and lift coefficients, surge, sway amplitudes, as well as the yaw motion of the DDSS platform. The simulation was conducted at a velocity of 0.16 m/s.

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Journal articles on the topic 'Platform control'

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