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Статті в журналах з теми "Automated Manual Transmission (AMT)"

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Kim, Wan-Soo, Yong-Joo Kim, Yeon-Soo Kim, Seung-Yun Baek, Seung-Min Baek, Dae-Hyun Lee, Kyu-Chul Nam, Tae-Bum Kim, and Hyo-Jai Lee. "Development of Control System for Automated Manual Transmission of 45-kW Agricultural Tractor." Applied Sciences 10, no. 8 (April 23, 2020): 2930. http://dx.doi.org/10.3390/app10082930.

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Анотація:
This study aims to develop and evaluate an automated manual transmission (AMT) for agricultural tractors with high efficiency and high convenience by using electric actuators. An AMT system to control manual-type shuttle gearboxes and transmissions for tractors is developed by adding a shuttle shifting actuator, a clutch actuator, and a control system to a conventional manual transmission (MT). The clutch actuator is designed using an electric motor and a reduction gear. The AMT control system is developed and experimental tests are conducted to evaluate the performance of the AMT. The results of the performance of the actuator position control demonstrate that the shuttle shifting actuator and clutch actuator are controlled appropriately, achieving a maximum overshoot of less than 5% and 0%, a settling time of less than 0.500 s and 1.50 s, and a steady-state error of less than 1% and 1%, respectively. The performance of the automatic forward and reverse control demonstrates a shift control time of less than 2.50 s and target revolutions per minute (RPM) reaching time of less than 3.00 s. Thus, AMT systems for tractors can be easily developed by applying shuttle shifting actuators, clutch actuators, and a control system to conventional manual transmissions.
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Zhang, Zhi Sen, Hui Jin Xiao, Cheng Fu Yang, Ling Ling, and Bai Hai Wu. "The Synchronous Control of Automated Manual Transmission in Three-Gear Electric Bus." Applied Mechanics and Materials 419 (October 2013): 731–34. http://dx.doi.org/10.4028/www.scientific.net/amm.419.731.

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The system configuration of 3-gear automated manual transmission (AMT) in electric bus was introduced and the rationality and necessity of using 3-gear AMT in electric bus were discussed. The mechanical structure of AMT was built in this paper. According to the evaluation criteria of automatic gear shifting, ed. the shift time and shift jerk, the optimum control strategy of synchronous process was proposed in terms of the principle and method of torque and speed adjustment of main driving motor. The experimental results illustrates that the developed 3-gear synchronous control system can be put into effect. The test results show that the mean shift time is 1.86s (statistical value) and the shift jerk is between ±35m·s-3.
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Yin, Jian Bo, Qi Chen, Yun Bo Ma, and Yv Cai Zhao. "Study on Automated Manual Transmission Fault Diagnosis and Tolerant Control." Applied Mechanics and Materials 697 (November 2014): 344–49. http://dx.doi.org/10.4028/www.scientific.net/amm.697.344.

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This paper discuss the possible fault about AMT. By using the information redundancy between those parts, the faults of sensors and actuators can be found. In addition, the corresponding tolerant is put forward. Based on the fault diagnosis method, Matlab/Simulink mathematical model of engine, clutch and transmission is built. The simulation results show that the model can satisfy the requirement of fault diagnosis, and has certain tolerances.
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Gong, Peng, Jian Min Meng, and Jun Qiang Xi. "Adaptive Control of Synchromesh Shifting Process for Automated Manual Transmission." Advanced Materials Research 455-456 (January 2012): 1132–35. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.1132.

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It is difficult to gain the ideal effect by using a single control method for shifting process due to many influence factors of synchromesh shifting process in Automated Manual Transmission (AMT). Synchromesh shifting process is divided into two stages. One is stage of eliminating the gap of synchronizer, and the other is the slipping stage of synchromesh. The paper mainly analyses the control process of eliminating the gap of synchronizer. By adopting the adaptive control to reduce the shock of initial shifting stage, it can reduce impact and abrasion wear, and improve the quality of whole shifting process.
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Chen, Qi, Yu Cai Zhao, Jian Bo Yin, and Yun Bo Ma. "Automated Mechanical Transmission Technology and Development Trend." Applied Mechanics and Materials 697 (November 2014): 280–84. http://dx.doi.org/10.4028/www.scientific.net/amm.697.280.

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Анотація:
Automated Mechanical Transmission achieves automatic shifting by applying electronic control technology in traditional dry clutch and Manual Transmission,not only having the advantages of automatic transmission, but also keeping the performance of the original manual transmission. This paper generally introduces the function and performance characteristics of Automated Mechanical Transmission, and elaborates its system structure, working principle and key technology. The key technology is divided into 4 parts, including Electronic Control System, Clutch Control, Shift Strategy and Design and Optimization of the Actuator. Combining with the related companies' research and development products, the performance of the Automated Mechanical Transmission is further analyzed. At the same time, according to the current research status in the world, putting forward the following research focus and development trend of Automated Mechanical Transmission.Keywords: Automated Mechanical Transmission; Key Technology; Development Trend
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Chen, Zhiqiang, Bangji Zhang, Nong Zhang, Haiping Du, and Guoling Kong. "Optimal preview position control for shifting actuators of automated manual transmission." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 2 (April 11, 2018): 440–52. http://dx.doi.org/10.1177/0954407017745981.

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Анотація:
This paper is concerned with the problem of position tracking control for the motor-driven gear-shift actuating mechanism for electro-mechanical automated manual transmissions (AMT). It is well known that torque interruption is an inherent flaw of AMT. As shift duration directly affects the torque interruption interval, shift quality can be improved by minimizing the duration of the shift. To realize rapid and precise gear-shift control, an optimal discrete-time preview position control scheme is proposed. The proposed control scheme consists of state-feedback control, a discrete integrator, and preview feed-forward control. Instead of the traditional difference method, the state transformation method is utilized to construct the augmented error system such that the augmented system can be kept in a simple form. The H∞ performance index is employed to reduce the effect of the shifting load disturbance during the gear-shifting process. The controller gains are obtained by solving a linear matrix inequality (LMI). Simulation and test bench results all show that the proposed preview control algorithm has better dynamic response and adaptability under different loads compared to the optimal linear quadratic regulator (LQR) controller and the standard PID controller.
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Kim, Jihwan, and Hyeongcheol Lee. "Motor position control algorithm for an automated manual transmission of the agricultural tractor." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 18 (October 9, 2015): 3341–49. http://dx.doi.org/10.1177/0954406215610360.

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This paper presents a motor position control algorithm for an automated manual transmission (AMT) of the agricultural tractor, based on modified linear quadratic tracking (LQT). In this paper, the modified LQT is derived from the conventional LQT by applying the Luenberger observer in order to design an output feedback controller. A dynamic model of the actuator is derived to represent characteristics of the worm geared DC motor and the proposed control algorithm is applied and tuned with the model. The proposed position control algorithm of the worm geared motor using the modified LQT can improve disturbance rejection performance without changing the hardware configuration of the AMT. The simulation results show the validity of the proposed control algorithm.
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Zhang, Zhi Sen, Ling Ling, Bai Hai Wu, Zhen Sheng Chen, and Jun Hao Li. "Study on the Synchronizing Time and Shift Quality of Automated Manual Transmission (AMT)." Advanced Materials Research 721 (July 2013): 466–70. http://dx.doi.org/10.4028/www.scientific.net/amr.721.466.

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Анотація:
By the synchronizing time, the synchronizing force was controlled reasonably. The impact factors on synchronizing were analyzed and the shift synchronization time was studied. The benchmarking and the road tests were carried out for further investigation. Test data show that by the developed AMT shift control strategies, the average synchronization time is as follows: under the benchmarking condition the minimum time is 100ms (3->4 gear) while the maximum time is 485 ms (0->1 gear); under the road test condition the minimum time is 55ms (4->5 gear) while the maximum time is 100 ms (3->4 gear); The jerk as the utility comfort evaluation index under the road test condition was analyzed and the result was 5.43 m/s3 which satisfied the automated transmission requirement perfectly.
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Ren, Li Na, Na Na Tang, Han Qi Yue, and Bing Zhao Gao. "Simulation and Optimal Control of AMT Starting-up Process." Applied Mechanics and Materials 380-384 (August 2013): 672–75. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.672.

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Анотація:
For a vehicle with 5-speed AMT (Automated Manual Transmission), AMESim model of the powertrain is set up, and comparison of simulation and experimental values is carried out to test the reliability of the simulation model. Through the co-simulation of AMESim and Simulink, we use optimal control and PID control respectively to control the starting process. The simulation result indicates that the optimal control strategy can satisfy the requirement for the drivability and smoothness.
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Zhang, Yue, Xiang Yu, Lu Lu Guo, and Bing Zhao Gao. "Performance Evaluation of Electric Vehicle with 2-Speed I-AMT." Advanced Materials Research 710 (June 2013): 285–89. http://dx.doi.org/10.4028/www.scientific.net/amr.710.285.

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Анотація:
For a novel electric vehicle equipped with 2-speed Inverse Automated Manual Transmission (I-AMT), optimal design of the gear ratios is carried out using dynamic programming (DP) under vehicle dynamic constraints. Given multiple driving cycles, the design target is to make the electric vehicle obtain the best energy consumption economy. After the gear ratios are determined, the performance of the 2-speed electric vehicle is compared with the same vehicle with a single-speed gear box, and it is shown that the 2-speed transmission has much better performacne in terms of acceleration time, maximum speed and energy economy.
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Дисертації з теми "Automated Manual Transmission (AMT)"

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Ma, Teng. "Model-Based Control Design and Experimental Validation of an Automated Manual Transmission." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1374198354.

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Abrahamsson, Henrik, and Peter Carlson. "Robust Torque Control for Automated Gear Shifting in Heavy Duty Vehicles." Thesis, Linköping University, Linköping University, The Institute of Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15883.

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In an automated manual transmission it is desired to have zero torque in the transmission when disengaging a gear. This minimizes the oscillations in the driveline which increases the comfort and makes the speed synchronization easier. The automated manual transmission system in a Scania truck, called Opticruise, uses engine torque control to achieve zero torque in the transmission.In this thesis different control strategies for engine torque control are proposed in order to minimize the oscillations in the driveline and increase the comfort during a gear shift. A model of the driveline is developed in order to evaluate the control strategies. The main focus was to develop controllers that are easy to implement and that are robust enough to be used in different driveline configurations. This means that model dependent control strategies are not considered.A control strategy with a combination of a feedback from the speed difference between the output shaft speed and the wheel speed, and a feedforward with a linear ramp, showed very good performance in both simulations and tests in trucks. The amplitude of the oscillations in the output shaft speed after neutralengagement are halved compared to the results from the existing method in Scania trucks. The new concept is also more robust against initial conditions and time delay estimations.

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Modak, Aditya. "Modeling and Control of an Automated Manual Transmission for EcoCAR 3 Vehicle." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500332603529038.

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4

Brischetto, Mathias. "Improved Functionality for Driveability During Gear-Shift : A Predictive Model for Boost Pressure Drop." Thesis, Linköpings universitet, Fordonssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-123424.

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Анотація:
Automated gear-shifts are critical procedures for the driveline as they are demanded to work as fast and accurate as possible. The torque control of a driveline is especially important for the driver’s feeling of driveability. In the case of gear-shifts and torque control in general, the boost pressure is key to achieve good response and thereby a fast gear-shift. An experimental study is carried out to investigate the phenomena of boost pressure drop during gear-shift and gather data for the modelling work. Results confirm the stated fact on the influence of boost pressure drop on gear-shift completion time and also indicate a clear linear dependence between initial boost pressure and the following pressure drop. A dynamic predictive model of the engine is developed with focus on implementation in a heavy duty truck, considering limitations computational complexity and calibration need between truck configurations. The resulting approach is based on a mean value modelling scheme that uses engine control system parameters and functions when possible. To be able to be predictive, a model for demanded torque and engine speed during the gear-shift is developed as reference inputs to the simulation. The simulation is based on a filling and emptying process throughout the engine dynamics, and yields final values of several engine variables such as boost pressure. The model is validated and later evaluated in comparison to measurements gathered in test vehicle experiments and in terms of robustness to input and model deviations. Computer simulations yield estimations of the boost pressure drop within acceptable limits. Consid- ering estimations used prior to this thesis the performance is good. Input deviations and modelling inaccuracies are found to inflict significant but not devastating deviations to the model output, possibly more over time with ageing of hardware taken into account. Final implementation in a heavy duty truck ecu is carried out with results indicating that the current implementation of the module is relatively computationally heavy. At the time of ending the thesis it is not possible to analyse its performance further, and it is suggested that the module is optimized in terms of computational efficiency.
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Trask, Simon J. "Systems and Safety Engineering in Hybrid-Electric and Semi-Autonomous Vehicles." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555521147257702.

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Tran, Van Nhu. "Amélioration de l'agrément de conduite via le pilotage du groupe motopropulseur." Phd thesis, Université de Valenciennes et du Hainaut-Cambresis, 2013. http://tel.archives-ouvertes.fr/tel-00871807.

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Анотація:
La transmission à double embrayage a été introduite dans les véhicules afin d'améliorer le confort de conduit, l'économie de conduite et de diminuer le temps de changement de vitesses. La gestion du double embrayage joue un rôle important sur le confort de conduite. L'objectif principal de ce travail concerne alors la synthèse des lois de commande du double embrayage en phase de décollage et lors du changement de vitesses. Le mémoire est structuré de la façon suivante : le premier chapitre propose un état de l'art sur le groupe motopropulseur, la modélisation et la commande du groupe motopropulseur. Le second chapitre s'intéresse à la modélisation du groupe motopropulseur à double embrayage : dans une première partie, un modèle complet à simuler est développé, puis la deuxième partie propose une simplification de modèle en vue de la commande. Le troisième chapitre aborde les lois de commande du double embrayage en utilisant la technique de commande par mode glissant pour les systèmes multivariables. Le quatrième chapitre propose l'utilisation des modèles flous du type Takagi-Sugeno pour la synthèse des lois de commande. Dans une première partie, des lois de commande basées sur un modèle Takagi-Sugeno prenant en compte des incertitudes et des perturbations sont établies. Afin d'améliorer la performance de la loi de commande lors du changement de vitesses supérieures, la deuxième partie présente une loi de commande basée sur un modèle de Takagi-Sugeno incertain et perturbé à commutations. Enfin, des résultats de simulation obtenus en considérant le modèle complet développé dans le chapitre 2 sont donnés.
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Wu, Guang. "Design, modeling and optimization of hybridized automated manual transmission for electrified vehicles." Thesis, 2017. https://dspace.library.uvic.ca//handle/1828/8907.

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This research systematically compares various electrified vehicles based upon electrification levels and powertrain configurations. A series of novel hybrid electric powertrain systems based on the newly proposed Hybridized Automated Manual Transmission (HAMT) concept are introduced. One representative hybrid powertrain system is selected to illustrate their operation principle. The new HAMT-based hybrid powertrain system overcomes the bottleneck problem of mainstream power-split hybrid systems with relatively low torque capacity and the constraint for utility vehicle electrification, and presents advantages over other hybrid powertrain systems in efficiency and costs. In addition, the new hybrid powertrain system can deliver continuous output torque by filling torque hole during gearshift, through coordinated control of engine, motor, and transmission, improving the driveability of regular Automated Manual Transmission (AMT), whose applications have been hampered by torque hole over the past years. The proposed HAMT-based hybrid systems with improved torque capacity, efficiency, costs, and driveability come with a compact design and more flexible operation through the amount of gearwheels equivalent to a 5-speed AMT to achieve 8 variable gear ratios for the Hybrid Electric Vehicle (HEV) mode and Electric Vehicle (EV) mode operations of a Plug-in Hybrid Electric Vehicle (PHEV). Model-based optimization, dynamics analysis, and powertrain control strategies have been introduced for a PHEV with a representative 8-speed HAMT. Vehicle simulations have been made to study and verify the capability and advantages of the new electrified powertrain system. Firstly, the operation principles of various HAMTs are discussed through detailed power flows at each gear. The fundamental principles of typical HAMT variations are explained using a new power-flow triangle with three ports. Based on the concept of Torque Gap Filler (TGF), a set of HAMT system designs have been introduced and closely studied to provide continuous and stable output torque. The selected hybrid powertrain system equipped with a representative HAMT system supports both HEV mode and EV mode with eight variable gear ratios for each mode. Among the eight forward gear ratios, six are independent and two are dependent on the other gears. Combinations of dog clutches at all gears are designed to eliminate torque holes. Gear ratios and gearshift schedule of the 8-speed HAMT are designed to support the new design. Torque paths at each gear are illustrated and transient scenarios including gearshifts and mode transitions are investigated. The gear ratio of each gear is determined by considering the unique clutch combination of this HAMT, using the classical gear ratio design method - Progressive Ratio Steps. Due to the broader high efficiency operation region of electric motors, a model-based optimization method is used to determine the two gear ratios for the EV mode to achieve better fuel economy and avoid unnecessary gearshifts. Dynamic Programming (DP) is used to identify the optimal gear ratios, considering vehicle fuel economy for the EPA75 and Highway Fuel Economy Fuel Test (HWFET) driving cycles. The 4th and 6th gears among the eight gear ratios in the EV mode of PHEV are based on 2-speed gearbox design for an EV, and their gearshift schedules are determined by optimization. Combining the considerations for the hybrid and EV modes of a PHEV, key elements of the proposed HAMT system, including gearshift schedule, clutch combination, and gear ratios for highly efficient operation are determined. The more challenging driveability issues during mode transition from EV to HEV and power-on gearshift with TGF during acceleration are addressed. Both of these two operations require relatively high power/torque outputs and involve multiple powertrain components, including engine, motor, main clutch and gearbox, within a period of two seconds. A lumped-mass model (LMM) of the HAMT-based hybrid vehicle is built to analyze the driveline dynamics in two steady states and four transient states. Each of these states is analyzed independently, according to states of main clutch and gear selectors, considering different phases of the TGF operation and EV-HEV mode transition. The methods for modeling the discontinuity of clutch torque and dog clutch inside the HAMT are discussed to support the subsequent powertrain system modeling and control development. To identify the optimal control schemes for model transition and gearshift, the model-based optimization method for a post-transmission parallel PHEV is developed. The vehicle powertrain model was initially built using AUTONOMIE and MATLAB/Simulink with primary parameters from a prototype PHEV and its dSPACE ASM model developed at University of Victoria. System dynamics in EV mode and hybrid mode are described as a group of state-space equations, which are further discretized into matrix form to simplify the optimization search. A DP-based global optimization method is used to identify the optimal control inputs, including engine torque, motor torque, and main clutch torque. Four principles for desirable EV-HEV mode transitions are extracted based on the results of the optimization. To model different operation modes and complex power flows, the initial baseline powertrain system model is then replaced by a customized MATLAB/SimDriveline model. In this new physics-based powertrain model, gearshift actuators and controller are added to model the gearshift and mode transition processes. To achieve good driveability, the TGF feature of the HAMT design is split into five transient and two steady phases, each corresponding to a fundamental operating mode. Control logics of upshift and downshift, as well as EV-HEV mode transition are introduced. Four principles of mode transition derived from global optimization results are introduced for powertrain system control. Simulations of the HAMT-based hybrid powertrain operations have been carried out to verify the functionality and advantages of the proposed HAMT design in achieving excellent driveability during mode transition and gearshifts. Through controlled coordination of engine, motor and main clutch, EV-HEV mode transition can be achieved smoothly within a period of 2-3 seconds. Even slight driveline fluctuation can be eliminated by dedicated anti-shuffle control with the motors as actuators. The same simulation model also demonstrates excellent driveability during power-on gearshift. Comparing simulation results with and without TGF shows that this new hybrid powertrain system can effectively eliminate torque holes during gearshift. With the demonstrated advantages of this new system in efficiency, torque capacity, simplicity in design and manufacturing costs over its existing rivals, the research provides a promising alternative to mainstream power-split hybrid electric powertrain system design.
Graduate
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Lin, Sheng-Yu, and 林聖瑜. "Shift control of clutchless Automated Manual Transmission." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/92929191390249629867.

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Анотація:
碩士
國立屏東科技大學
車輛工程系所
99
Vehicles with automatic manual transmission (AMT) for gear shift offer many advantages in terms of reduction of fuel consumption, improvement of driving comfort, and shifting quality. The AMT can either automatically shift gears using appropriate actuators mounted on manual transmission (MT) according to driver’s power command and driving conditions, or in accordance with driver’s gear command through shifting level. Conventional AMT for vehicles powered by internal combustion engine (ICE) requires an electronic controlled clutch to separate or engage engine power to the MT for gear change smoothly, because of high inertia of the ICE, which complicates the system and thus with high cost. In this study, an AMT design without the use of the clutch for electric vehicle (EV) is studied. The idea is mainly based on the fact that the inertia of the power motor of EV is generally quite small compared with that of the ICE. This enable synchronize electronically the rotating speed of driving gears with driven gears in the MT gearbox during the gear change operations. This thesis introduces the design of the CL AMT and its feasibility was verified through a test rig.
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Ming-Feng, Hsieh, and 謝明峰. "Dynamic Modeling and Optimization of Automated Manual Transmission System." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/47293t.

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Анотація:
碩士
國立交通大學
機械工程系所
92
Automated Manual Transmission (AMT) system is gradually prevailed in recent years since it has high transmission efficiency, auto shifting capability, and low cost. Vehicles from high quality sports cars like BMW M3, Ferrari 355, Alfa Romeo 156, etc., to general sedans like Opel Corsa, Renault Twingo, etc. have introduced such system. However, the key point that AMT can’t completely substitute Automated Transmission (AT) system is the smoothness that a auto clutch system on AMT can’t transmit power as smooth as a torque converter on AT. Clutch control of AMT system is the main subject in this study, which includes three objectives: dynamic modeling, control function design, and optimization. The first objective is to create a dynamic model of AMT system, which includes engine, clutch, clutch actuator, gear box, and vehicle loading. Clutch actuator is focused in this model, since this study is a project cooperating with Industrial Technology Research Institute (ITRI) to modify a prototype of clutch actuator. The second objective uses the dynamic model created before to design a control function for the clutch actuator, some control methods and parameter turning methods are introduced here. According to the control model and dynamic model, a complete shifting process from controller to vehicle dynamic is simulated in this study. The third objective is optimization, some parts in the clutch actuator and some parameters of the control function are optimized to give a better performance on clutch engagement and disengagement.
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10

Lin, Tsung-Hsien, and 林宗賢. "Controller Design of Electric Scooter with Automated Manual Transmission." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/61631756542645905922.

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Анотація:
碩士
國立中正大學
機械工程學系暨研究所
101
Due to discharging for battery is usually over its rated current, a electric scooter has problems of low driving efficiency and short life of battery. Especially, a battery's output current is much higher when a electric scooter is drove on a ramp. In order to solve above problems, people are used to reducing voltage of motor to control battery's output current. However, it's confirmed by an experiment that reducing motor's voltage can't improve driving efficiency of a electric scooter. Therefore, I choose to install an Automated Manual Transmission on a electric scooter to limit battery's output current and depend on the value of current to choose a suitable gear ratio to drive.
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Книги з теми "Automated Manual Transmission (AMT)"

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Bratko, Aleksandr. Automated control systems and communications: fundamentals of telecommunications. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1013017.

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The textbook provides a definition of communication, discusses the types and types of telecommunications, and the requirements for communication. It describes telecommunication signals, their parameters, and methods for converting, encoding, and transmitting various types of messages. The principles of construction of multi-channel transmission systems, their main characteristics, the device of terminal subscriber terminals, operational dispatch communication systems, manual and automatic telephone exchanges are described. The principles of building radio communication facilities and rules for conducting radio exchange are considered. The technical characteristics of radio stations used in the EMERCOM and SBS of Russia are given. The basics of radio-relay, satellite, cellular and trunking communications are described. Meets the requirements of the Federal state educational standard of higher education of the latest generation in the discipline "Automated control systems and communications". It is intended for students of secondary professional educational institutions studying in the specialties 20.02.02 "protection in emergency situations" and 20.02.04 "Fire safety".
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Частини книг з теми "Automated Manual Transmission (AMT)"

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Saragea, Ștefan, Ioan Mircea Oprean, Gabriel Badea, and Gheorghe Frățilă. "Modeling the Torque Oscillations During Gear Shifts on Automated Manual Transmission." In Proceedings of the 4th International Congress of Automotive and Transport Engineering (AMMA 2018), 634–41. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94409-8_74.

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Mühlfeld, F., M. Hochrein, N. Schmidt-Winkel, and J. Buhl. "Electrified automated manual transmission (eAMT) – Synergies by combining an electric drive with an automated transmission." In Dritev – Drivetrain For Vehicles 2018, I—197—I—210. VDI Verlag, 2018. http://dx.doi.org/10.51202/9783181023280-i-197.

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"Electropneumatic clutch servomechanism and its fuzzy control for automated manual transmission." In Fluid Power, 750–52. CRC Press, 1993. http://dx.doi.org/10.4324/9780203223475-300.

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Arroyo-Rojas, Ulises, Miguel Jimenez-Martinez, Gibran Benitez-Garcia, Jesus Olivares-Mercado, and Hiroki Takahashi. "Twitter Face Image Mining for Recognition of Different Face Mask Types." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2022. http://dx.doi.org/10.3233/faia220260.

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In the current pandemic of coronavirus disease (COVID-19), an effective way to prevent the transmission and infection of the virus is the proper use of face masks. However, the different types of masks provide different degrees of protection. For instance, valved masks protect the user but do not help to stop the transmission. Hence, the automatic recognition of face mask types may benefit applications that control access to facilities where a certain facepiece is required. In this paper, we propose a Twitter mining framework to gather a large-scale dataset of masked faces suitable to train deep learning-based models for face mask recognition. We employ a keyword-based selection where non-face images are discarded by an efficient face detector (Retinaface). Finally, we train a state-of-the-art CNN architecture (ConvNeXt) for recognizing the wearing mask. We also present a brief analysis of more than two million image-based tweets acquired over two years since the beginning of the pandemic. The code of the proposed framework and a preliminary dataset of more than 10K faces (manually annotated into unmasked, surgical, cloth, respirators, and valved masks) are available on github.com/GibranBenitez/FaceMask Twitter.
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"Sliding Mode Based Engine Speed Control for an Automated Manual Transmission During Gear Shifting Process." In Systems, Automation and Control, 183–202. De Gruyter Oldenbourg, 2017. http://dx.doi.org/10.1515/9783110470468-011.

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Kneißler, M., R. Welter, and M. Baumann. "Entry hybridization of manual transmission drivetrains – A review of P0/P1 structures with an automated clutch." In Dritev – Drivetrain For Vehicles 2018, I—305—I—322. VDI Verlag, 2018. http://dx.doi.org/10.51202/9783181023280-i-305.

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Тези доповідей конференцій з теми "Automated Manual Transmission (AMT)"

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Heath, R. P. G., and A. J. Child. "Zeroshift Automated Manual Transmission (AMT)." In SIAT 2007. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-26-061.

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2

Heath, R. P. G., and A. J. Child. "Zeroshift. A Seamless Automated Manual Transmission (AMT)With No Torque Interrupt." In SAE World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-01-1307.

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3

Chen, Qi, Qadeer Ahmed, and Giorgio Rizzoni. "Sensor Placement Analysis for Fault Detectability and Isolability of an Automated Manual Transmission." In ASME 2014 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/dscc2014-6067.

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This paper presents a systematic methodology to identify the sensor placements to maximize the detection and isolation of faults that can affect the performance of Automated Manual Transmissions (AMT). A set of critical faults has been identified using Failure Mode and Effects Analysis (FMEA). A detailed fault modeling has been performed for AMT and the model has been simulated to demonstrate the faults effect on AMT functions. The structurally over-determined part of AMT is determined using the concepts of structural analysis that utilizes AMT structural model. The analysis assists in shortlisting the critical sensors locations for health monitoring of AMT. The results show that the proposed sensors set is economical and the sensor locations ensure the detectability and isolability of the critical faults.
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4

Chu, Hongqing, Yong Chen, Lishu Guo, Bingzhao Gao, and Hong Chen. "Application of Slope Sensor in Hill-Start to AMT (Automated Manual Transmission) Vehicles." In SAE 2015 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2015. http://dx.doi.org/10.4271/2015-01-1108.

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5

Martins, Bruno Felipe Lucas. "Developing the Automated Manual Transmission (AMT-Dualogic®) in Passenger Vehicles for the Brazilian Market." In SAE Brasil 2009 Congress and Exhibit. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2009. http://dx.doi.org/10.4271/2009-36-0243.

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6

Liao, Y. Gene, Chih-Ping Yeh, and Allen M. Quail. "Modeling and Simulation of Medium-Duty Tactical Truck for Fuel Economy Improvement." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37112.

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The impact of the vehicle fuel economy in tactical convey is amplified due to the fact that much of the present logistics support is devoted to moving fuel. Fuel economy improvement on medium-duty tactical truck has and continues to be a significant initiative for the U. S. Army. The focus of this study is the investigation and analysis of Automated Manual Transmissions (AMT) that have potential to improve the fuel economy of the 2.5-ton cargo trucks. The current platform uses a seven-speed automatic transmission. This study utilized a combination of on-road experimental vehicle data and analytical vehicle model and simulation. This paper presented the results of (1) establishment of a validated, high fidelity baseline analytical vehicle model, (2) modeling and simulation of two AMTs and their control strategy, and (3) optimization of transmissions shift schedules to minimize the fuel consumption. The fuel economy discrepancy between experimental average and the baseline simulation result was 2.87%. The simulation results indicated a 12.2% and 14.5% fuel economy improvement for the 12-speed and 10-speed AMT respectively.
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7

D’Agostino, V., N. Cappetti, M. Pisaturo, and A. Senatore. "Improving the Engagement Smoothness Through Multi-Variable Frictional Map in Automated Dry Clutch Control." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-85945.

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An Automated Manual Transmission (AMT) is directly derived from a manual one through the integration of actuators; then, development and production costs are generally lower than other automatic transmissions, while the reliability and durability are at highest level. For high class sport cars, vehicle dynamic performances and driving quality can be strongly improved with respect to automatic transmissions [1]. AMTs systems are generally constituted by a dry or wet clutch assembly and a multi-speed gearbox, both equipped with electro-mechanical or electro-hydraulic actuators, which are driven by a control unit, the transmission control unit (TCU). The operating modes of AMTs are usually two: semiautomatic or fully automatic. In both cases, after the gear shift command, the TCU manages the shifting steps according to current engine regime, driving conditions and selected program. In this transmission type the quality of the vehicle propulsion as perceived by the driver is largely dependent on the quality of the control strategies. Furthermore, sensitivity analyses on control schemes for AMTs have shown that uncertainties in clutch torque characteristic can severely affect the performance of the clutch engagement: modeling in detail the torque transmitted by the specific clutch architecture is a crucial issue in order to design robust engagement control strategies [2, 3 and 4]. This paper aims at investigating the engagement performance of an actuated dry clutch by taking into account the inference of the pressure on the facing materials and the sliding speed. In fact, according to literature outcomes [5], the friction coefficient after a first rising behavior with the sliding speed shows an asymptotic value for a typical clutch facing; the same material exhibits a nearly linear dependence of the friction coefficient on the pressure. The simulations consider: reduced-order dynamic system for simulation of passenger car driveline, control algorithm, experimental maps of the n-D clutch transmission characteristic, and gear shift maneuvers in different operating conditions. The outcome of this analysis could provide valuable issues for designers of automated clutches and control engineers to overcome the well known poor engagement performances of open loop motion strategy of the throwout bearing where cost reason and complexity don’t permit the use of displacement sensor.
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Gao, Bingzhao, Xiaohui Lu, Jun Li, and Hong Chen. "Model Predictive Control of Gear Shift Process in AMT Trucks." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47369.

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In order to improve shift quality, a model predictive controller is proposed for gear shifting control of vehicles with automated manual transmissions (AMTs). During the clutch engagement process, the contradictive requirements of short engagement time and small shift shock are taken into consideration in the optimal objective function. Through simulation test on a complete powertrain simulation model, it is verified that the shift shock is reduced significantly while at the same time the shift time is kept small enough.
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9

Vacca, F., G. Capilli, A. Sorniotti, C. Cavallino, M. Fracchia, T. Remondin, and F. Bottiglione. "A novel hybridized automated manual transmission for high performance cars." In 2018 15th International Workshop on Advanced Motion Control (AMC). IEEE, 2018. http://dx.doi.org/10.1109/amc.2019.8371147.

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10

Montazeri-Gh, Morteza, Zeinab Pourbafarani, and Hassan Nehzati. "Optimal Gear Ratio and Gear Shift Strategy Design for a Parallel Hybrid Electric Vehicle Equipped With AMT." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24702.

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This paper presents an optimal approach for the design of gear ratios and gear shifting strategy for parallel hybrid electric vehicle (HEV) equipped with automated manual transmission (AMT). For this purpose, an AMT model is firstly provided and integrated with a pre-transmission parallel HEV model to develop a comprehensive simulation tool for vehicle powertrain performance evaluation. Using genetic algorithm (GA), an optimization problem is then formulated for the optimal design of the AMT variables including its gear ratios as well as the variables defined for the gear shifting strategy. A weighted aggregation of the HEV fuel consumption and emissions is also employed as the fitness function. In addition, the vehicle driving performance characteristics are considered as the optimization constraints. To optimize the gearshift strategy and gear ratios, GA optimization process is performed for several traffic conditions. The results show that the approach is quite effective. A considerable improvement is achieved at congested condition due to its sensitivity to the stop-start operation of the vehicle.
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Звіти організацій з теми "Automated Manual Transmission (AMT)"

1

Boruchowicz, Cynthia, Florencia López Bóo, Benjamin Roseth, and Luis Tejerina. Default Options: A Powerful Behavioral Tool to Increase COVID-19 Contact Tracing App Acceptance in Latin America? Inter-American Development Bank, December 2020. http://dx.doi.org/10.18235/0002983.

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Анотація:
Being able to follow the chain of contagion of COVID-19 is important to help save lives and control the epidemic without sustained costly lockdowns. This is especially relevant in Latin America, where economic contractions have already been the largest in the regions history. Given the high rates of transmission of COVID-19, relying only in manual contact tracing might be infeasible. Acceptability and uptake of contact tracing apps with exposure notifications is key for the implementation the “test, trace and treat” triad. In the first study of its kind in Latin America, we find that for a nationally representative sample of 10 countries, an opt-out regime with automatic installation significantly increases the probability of acceptance of such apps in almost 22 p.p. compared to an opt-in regime with voluntary installation. This triples the size and is of opposite sign of the effect found in Europe and the United States. We see that an opt-out regime is more effective in increasing acceptability in South America compared to Central America and Mexico; for those who claim not to trust the national government; and for those who do not use their smartphones for financial transactions. The severity of the pandemic at the place of residence does not seem to affect the effectiveness of the opt-out regime versus an opt-in one, but feeling personally at risk does increase the willingness to accept contact tracing apps with exposure notifications in general. These results can shed light on the use of default options in public health in the context of a pandemic in Latin America.
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