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Littérature scientifique sur le sujet « Automated manual transmissions »

Auteur : Grafiati

Publié le 10 mars 2023

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Articles de revues sur le sujet "Automated manual transmissions"

Glielmo, L., L. Iannelli, V. Vacca et F. Vasca. « Gearshift control for automated manual transmissions ». IEEE/ASME Transactions on Mechatronics 11, n^o 1 (février 2006) : 17–26. http://dx.doi.org/10.1109/tmech.2005.863369.

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Qi, Xiaowei, Yiyong Yang, Xiangyu Wang et Zaobei Zhu. « Analysis and optimization of the gear-shifting process for automated manual transmissions in electric vehicles ». Proceedings of the Institution of Mechanical Engineers, Part D : Journal of Automobile Engineering 231, n^o 13 (27 janvier 2017) : 1751–65. http://dx.doi.org/10.1177/0954407016685461.

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In recent years, it has been a trend for an automated manual transmission to be adopted as the powertrain for an electric vehicle. However, the strong degrees of jerk and power interruption during the gear-shifting process affect the shifting quality and restrict the application of automated manual transmissions. Therefore, it is a currently popular research topic to find an optimal method to improve the shifting qualities of automated manual transmissions. In this paper, the clutchless shifting process is analysed on the basis of a dynamics model of an automated manual transmission in an electric vehicle, and the parameters are optimized to improve the shifting quality using a defined comprehensive evaluation index. First, the dynamics model of the shifting process for an automated manual transmission is established by considering the stiffness, the damping and the non-linearity contact backlash of the gear mesh and the synchronizer. The whole shifting process is carried out in MATLAB/Simulink and compared with that in the Adams model and bench experiments to prove the accuracy of the dynamics model. Then, the factors of the shifting quality, which include the shifting force and the control accuracy of the speed of the driving motor, are quantified. With the comprehensive evaluation index, all the main factors are described in a cobweb model diagram to find the optimal parameters of the shifting process. The results show that the comprehensive evaluation index can be reduced by 23% by regulating the parameters of the shifting process. This study may be conducive to improving the shifting quality of automated manual transmissions in electric vehicles.

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Han, Ki Won, Wan Sik Ryu, Jae Wook Jeon, Hyeon Ki Choi, Hyun Soo Kim et Sung Ho Hwang. « Performance Evaluation of the Embedded System for Automated Manual Transmissions Using Test Rig ». Key Engineering Materials 326-328 (décembre 2006) : 1427–30. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1427.

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Drivers are becoming more fatigued and uncomfortable as traffic densities increase, and so, can show slower reaction time. They then face the danger of traffic accidents due to their inability to cope with frequent shifting. To reduce this risk, some drivers prefer automatic transmissions to manual transmissions. However, automatic transmission requires both higher fuel consumptions and costs. For this reason, attention to automated manual transmission that can provide high efficiency, low cost and easy manufacturability has been increasing. In addition, the function and performance of the electronic control unit of automobiles has improved continually and rapidly with the growing electronics technology. The ECU is a representative embedded system in automobiles, which has to satisfy high performance and reliability under the constraints of size and cost. In this paper, the embedded system platform for automobiles is developed on the basis of MPC565, and a test rig is developed to perform the basic function test for automatic clutch actuation. The developed embedded system and clutch control algorithm are validated by the experimental results performed on the test rig.

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Munot, Piyush. « Automated Manual Transmissions to Comeback with New Strength ». Auto Tech Review 1, n^o 9 (septembre 2012) : 12–13. http://dx.doi.org/10.1365/s40112-012-0115-8.

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Horn, Joachim, Joachim Bamberger, Peter Michau et Stephan Pindl. « FLATNESS-BASED CLUTCH CONTROL FOR AUTOMATED MANUAL TRANSMISSIONS ». IFAC Proceedings Volumes 35, n^o 1 (2002) : 361–66. http://dx.doi.org/10.3182/20020721-6-es-1901.01528.

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Horn, Joachim, Joachim Bamberger, Peter Michau et Stephan Pindl. « Flatness-based clutch control for automated manual transmissions ». Control Engineering Practice 11, n^o 12 (décembre 2003) : 1353–59. http://dx.doi.org/10.1016/s0967-0661(03)00099-6.

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Li, Xin, Jidong Lyu, Jinlong Hong, Jinghua Zhao, Bingzhao Gao et Hong Chen. « MPC-Based Downshift Control of Automated Manual Transmissions ». Automotive Innovation 2, n^o 1 (14 février 2019) : 55–63. http://dx.doi.org/10.1007/s42154-019-00050-8.

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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 et Hyo-Jai Lee. « Development of Control System for Automated Manual Transmission of 45-kW Agricultural Tractor ». Applied Sciences 10, n^o 8 (23 avril 2020) : 2930. http://dx.doi.org/10.3390/app10082930.

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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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Vacca, Fabio, Stefano De Pinto, Ahu Hartavi Karci, Patrick Gruber, Fabio Viotto, Carlo Cavallino, Jacopo Rossi et Aldo Sorniotti. « On the Energy Efficiency of Dual Clutch Transmissions and Automated Manual Transmissions ». Energies 10, n^o 10 (11 octobre 2017) : 1562. http://dx.doi.org/10.3390/en10101562.

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Fredriksson, Jonas, et Bo Egardt. « Active engine control for gearshifting in automated manual transmissions ». International Journal of Vehicle Design 32, n^o 3/4 (2003) : 216. http://dx.doi.org/10.1504/ijvd.2003.003562.

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Thèses sur le sujet "Automated manual transmissions"

Pisaturo, Mario. « Dry clutch for automated manual transmissions. Structural analysis and control strategies ». Doctoral thesis, Universita degli studi di Salerno, 2014. http://hdl.handle.net/10556/1765.

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2012 - 2013
The goal of this thesis is the study of the automotive push-type dry clutches used in the Automatic Manual Transmissions (AMTs) and in the Dual Clutch Transmissions (DCTs) in order to improve their performances dur- ing the engagements phases. The push-type clutch is very widespread in the automotive sector because it allows many advantages in terms of cost, relia- bility, isolation of vibrations to the driveline, reduced axial size and stability to the facings wear [1]. Instead, the main advantages of an AMT, respect to the Automatic Transmissions (ATs), are improvements in terms of safety, reliability, and driving performances together with the reduction of the fuel consumption and pollutant emissions [2]. For these reasons by mixing the advantages of the push-type clutch with the advantages of the AMT it is possible to attain very high performance [3, 4]. On the other hand, the most important drawback of the AMT is the power interruption (the so called "torque gap") during the gear shifts events. To solve this problem in the last decade the DCTs have been introduced. In fact, by applying the engine torque to one clutch just as the engine torque is being disconnected from the other one [5] the torque transmission is allowed also during the gear shift phases. In this light, the work developed for this Thesis aimed at providing useful information both to the clutch designers and to control algorithm designers in order to enhance the performances, and consequently, the market di usion mof the AMT and DCT transmissions. The thesis is organized as follows. Chapter 2 is an introductory section on the historical evolution of the clutches and of the automotive transmissions systems. Chapter 3 deals with the transmissibility torque model by consid- ering the main factors which a ect the elastic components of a push-type clutch and the friction coe cient. In the Chapter 4 application of control algorithms both for a two DoFs driveline model and for a ve DoFs model are introduced. Finally, the Chapter 5 underlines the concluding remarks. [edited by author]
XII n.s.

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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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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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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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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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Abrahamsson, Henrik, et 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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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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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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Lin, Sheng-Yu, et 林聖瑜. « Shift control of clutchless Automated Manual Transmission ». Thesis, 2011. http://ndltd.ncl.edu.tw/handle/92929191390249629867.

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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, et 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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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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Lin, Tsung-Hsien, et 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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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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Livres sur le sujet "Automated manual transmissions"

Abbott, Sheldon L. Automatic transmissions : A text-lab manual. 2^e éd. Mission Hills, Calif : Glencoe Pub. Co., 1989.

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Johanson, Chris. Automatic transmissions and transaxles : Shop manual. Tinley Park, Ill : Goodheart-Willcox, c2007., 2007.

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Flaherty, John. Automotive automatic transmissions and transaxles shop manual. Lake Forest, Ill : Glencoe, 1992.

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Erjavec, Jack. Shop manual for automatic transmissions and transaxles. 5^e éd. Clifton Park, N.Y : Delmar Cengage Learning, 2011.

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Erjavec, Jack. Shop manual for automatic transmissions and transaxles. 3^e éd. Clifton Park, N.Y : Thomson Delmar Learning, 2003.

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Flaherty, John. Automotive automatic transmissions and transaxles : Classroom manual. Lake Forest, Ill : Glencoe, 1991.

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Classroom manual for automatic transmissions and transaxles. 3^e éd. Albany, N.Y : Thomson Delmar Learning, 2003.

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Killingsworth, Jeff. The Haynes Ford automatic transmission overhaul manual. Sparkford Nr Yeovil, Somerset, England : Haynes Pub. Group, 2001.

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Killingsworth, Jeff. The Haynes Ford automatic transmission overhaul manual. Sparkford Nr Yeovil, Somerset, England : Haynes Pub. Group, 2001.

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Killingsworth, Jeff. The Haynes Ford automatic transmission overhaul manual. Sparkford Nr Yeovil, Somerset, England : Haynes Pub. Group, 2004.

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Chapitres de livres sur le sujet "Automated manual transmissions"

Han, Ki Won, Wan Sik Ryu, Jae Wook Jeon, Hyeon Ki Choi, Hyun Soo Kim et Sung Ho Hwang. « Performance Evaluation of the Embedded System for Automated Manual Transmissions Using Test Rig ». Dans Experimental Mechanics in Nano and Biotechnology, 1427–30. Stafa : Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-415-4.1427.

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Saragea, Ștefan, Ioan Mircea Oprean, Gabriel Badea et Gheorghe Frățilă. « Modeling the Torque Oscillations During Gear Shifts on Automated Manual Transmission ». Dans 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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« Automated Manual Transmissions ». Dans Encyclopedia of Lubricants and Lubrication, 104. Berlin, Heidelberg : Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-22647-2_100041.

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Mühlfeld, F., M. Hochrein, N. Schmidt-Winkel et J. Buhl. « Electrified automated manual transmission (eAMT) – Synergies by combining an electric drive with an automated transmission ». Dans 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 ». Dans Fluid Power, 750–52. CRC Press, 1993. http://dx.doi.org/10.4324/9780203223475-300.

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Zhai, Cheng, Meiqing Wang, Yansheng Cao, Chenhao Ye et Wenhao Zhong. « Construction of MBD Model-Driven Quality Control Data Chain for Parts Machining Process ». Dans Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220474.

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Aiming at the problems of inconsistent data sources and much manual intervention in the process of quality inspection planning, data acquisition and analysis of traditional parts machining, an MBD model-driven quality control data chain model for parts machining process is constructed. Firstly, through the analysis of the MBD model and the quality characteristics-oriented primary inspection planning, the automatic generation of the inspection task XML file for the inspection process is presented. Secondly, the automatic generation method of the MBD model-driven CNC program for the on-machine inspection of the CNC machine tool and the CMM inspection DMIS program is given. Then the automatic acquisition method of the on-machine measurement results of the CNC machine tool based on OPC UA and the CMM inspection results based on the secondary development of PC-DMIS are proposed, which realizes the automatic acquisition of quality data for process-oriented tasks, XML format packaging, and then realize the quality analysis and monitoring of the processing based on quality data. Finally, the MBD model-driven inspection planning and quality data acquisition system (MD-IPQDA) is developed, which significantly improves the accuracy and transmission efficiency of quality data verified by application.

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« Sliding Mode Based Engine Speed Control for an Automated Manual Transmission During Gear Shifting Process ». Dans 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 et M. Baumann. « Entry hybridization of manual transmission drivetrains – A review of P0/P1 structures with an automated clutch ». Dans 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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Arroyo-Rojas, Ulises, Miguel Jimenez-Martinez, Gibran Benitez-Garcia, Jesus Olivares-Mercado et Hiroki Takahashi. « Twitter Face Image Mining for Recognition of Different Face Mask Types ». Dans 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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Raines, Rebecca Robbins. « Theater of WAR ». Dans War in the American Pacific and East Asia, 1941-1972, 11–53. University Press of Kentucky, 2019. http://dx.doi.org/10.5810/kentucky/9780813176550.003.0002.

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This chapter focuses on the establishment by the Signal Corps of the Army Command and Administrative Network (ACAN) in the Pacific Theater where unique challenges of distance, climate, and terrain faced the Army’s communicators.Initially a manually operated system, ACAN eventually adopted automatic radioteletype equipment that enabled faster and more accurate transmission of the rapidly growing message workload.ACAN made possible significant innovations, such as teleconferencing, that enabled Allied leaders to communicate with their commanders thousands of miles away. By war’s end, the system was carrying fifty million words per day over its circuits—an estimated eight words for every bullet fired.With the return to peace, the United States Government decided to dismantle ACAN.Not until the war in Vietnam would the Army operate another globe-spanning system, this time using the latest satellite technology to bridge the distance between Washington and the fighting front.

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Actes de conférences sur le sujet "Automated manual transmissions"

Surampudi, Bapiraju, et Glenn Wendel. « Control System Development for Retrofit Automated Manual Transmissions ». Dans International Mobility Engineering Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2009. http://dx.doi.org/10.4271/2009-28-0001.

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Srinath, Nitin, Aditya Shashidhar, Prajwal G. Shanthamurthy, Vedanth Reddy et Hitesh Bhadana. « Smart Clutch : An Automated Clutch That Can Be Used in Manual Transmission Driven Vehicles ». Dans ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65955.

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There are two basic types of transmissions — manual and automatic. While manual transmissions have greater transmission efficiency and better overall driving experience, it is difficult and not as easy to handle as automatic transmissions mainly due to the presence of the clutch pedal. Automatic transmissions make life are a lot easier to operate but are less efficient. So, the aim of this project is to take the best of both worlds and combine it in one i.e. the experience of driving a manual with the ease of an automatic. For this, the intention is to use a pressure sensor to detect when the gears have to be changed and automatically disengage the clutch, hence removing the need for the clutch pedal.

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Pingale, Abhijeet. « Development of Compact Synchronizer Technology for Manual and Automated Transmissions ». Dans SAE 2014 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2014. http://dx.doi.org/10.4271/2014-01-1719.

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Chu, Hongqing, Nana Tang, Bingzhao Gao et Hong Chen. « Friction coefficient identification of dry clutch in automated manual transmissions ». Dans 2014 International Conference on Mechatronics and Control (ICMC). IEEE, 2014. http://dx.doi.org/10.1109/icmc.2014.7231726.

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Wheals, J. C., C. Crewe, M. Ramsbottom, S. Rook et M. Westby. « Automated Manual Transmissions - A European Survey and Proposed Quality Shift Metrics ». Dans SAE 2002 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2002. http://dx.doi.org/10.4271/2002-01-0929.

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Mazziero, João Vitor Petermann, Thomas Maciel Moura, Rafael Henrique Garcia, Sergio Gradella Villalva, José das Neves, Marcos Paulo dos Santos et Fernando Luiz Windlin. « Response Time Estimation of a Hydraulic Actuator Applied at Automated Manual Transmissions ». Dans 23rd SAE Brasil International Congress and Display. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2014. http://dx.doi.org/10.4271/2014-36-0430.

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D’Agostino, V., N. Cappetti, M. Pisaturo et A. Senatore. « Improving the Engagement Smoothness Through Multi-Variable Frictional Map in Automated Dry Clutch Control ». Dans 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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Turner, A. J., K. Ramsay, R. E. Clark et D. Howe. « Development of High Force Electromechanical Linear Actuator for Shift-By-Wire Automated Manual Transmissions ». Dans SAE 2006 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2006. http://dx.doi.org/10.4271/2006-01-0360.

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Chen, Qi, Qadeer Ahmed et Giorgio Rizzoni. « Sensor Placement Analysis for Fault Detectability and Isolability of an Automated Manual Transmission ». Dans 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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Liao, Y. Gene, Chih-Ping Yeh et Allen M. Quail. « Modeling and Simulation of Medium-Duty Tactical Truck for Fuel Economy Improvement ». Dans 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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Rapports d'organisations sur le sujet "Automated manual transmissions"

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

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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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