Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"automatic transmission"”.
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Modelling and control of an automatic transmission
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1986.
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Adaptive control of hydraulic shift actuation in an automatic transmission
… model of a clutch for hydraulic control in an automatic transmission is developed by separating dynamics of the shift into four regions based on clutch piston position. The first three regions of the shift are captured by a physics-based model and the fourth region is represented by a system …
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Application of Floating Pedal Regenerative Braking for a Rear-Wheel-Drive Parallel-Series Plug-In Hybrid Electric Vehicle with an Automatic Transmission
… curves to determine when to shift the transmission. The brake pedal regen is added to the hydraulic braking based on brake pedal position. This regenerative brake controller can recharge the battery by 2% SOC during one deceleration event from 130 kph to 20 kph, while maintaining a …
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Systems engineering in practice : the application of systems engineering principles to the development of a hydraulic control system for an automatic transmission
Product development in the automotive industry has evolved around the design of components. The organization is established around components and people have a very component centric perspective on problem solving. This has led to local optimization of individual components, while the larger system …
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System team composition for a complex system to enable integration and attribute management
The automatic transmission is a very complex system in a modern automobile with several hundred components performing mechanical, hydraulic and electronic functions. System integration and attribute management are key challenges in the design and development of an automatic transmission. The system …
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Design and effects on handrim kinetics of an automatic gear-shifting wheel for manual wheelchairs
… pain in MWCUs. Therefore, prototypes of 5-speed automatic gear shifting (AGS) wheels for wheelchairs have been developed. The automatic transmission on the AGS system senses the translational speed of the wheelchair as well as the torque exerted on its handrim by a MWCU and transmits these data …
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Development of a vehicle robotic driver with intelligent control system modelling for automated standard driving-cycle tests
… pedals control systems modelling and design for automatic transmission vehicle are implemented, with Fuzzy model reference adaptive control (Fuzzy MRAC) as the main controller. The vehicle model was developed using black-box modelling approach where simulations are performed based on real-time …
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Control and estimation of hidden mode hybrid systems with applications to autonomous systems
… contact sensors and to the control of a car with automatic transmission. In the second part of the thesis, we develop inference algorithms for simultaneously estimating states, unknown inputs and hidden modes of stochastic switched linear systems, along with an analysis of their properties. We …
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Development and Applications of the Modular Automotive Technology Testbed (MATT) to Evaluate Hybrid Electric Powertrain Components and Energy Management Strategies
… and virtual scalable motor module, a manual transmission module and an automatic transmission module. The virtual battery and motor module uses some component Hardware-In-the-Loop (HIL) principles by utilizing a physical motor powered from the electric grid in conjunction with a real time …
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Development of a Series Parallel Energy Management Strategy for Charge Sustaining PHEV Operation
… Vehicle (PHEV) with P2 (between engine and transmission) and P4 (rear axle) motors, a lithium-ion battery pack, an internal combustion engine, and an automatic transmission. Development of a charge sustaining control strategy for this vehicle involves coordination of controls for each of the …
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Volumetric Properties and Viscosity of Fluid Mixtures at High Pressures: Lubricants and Ionic Liquids
… as viscosity index modifiers in engine oils and automatic transmission fluids. The polymer with amine functionality was found to have a significant effect on internal pressure, seen as a large drop at high polymer concentration (7 mass percent), due to the addition of repulsive intermolecular …
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Drive Quality Improvement and Calibration of a Post-Transmission Parallel Hybrid Electric Vehicle
… the control strategies used in modern automatic transmissions, and moves into the modeling strategy used to begin algorithm development. Two main strategies are developed and calibrated in the vehicle. The first being a strategy for reducing jerk in pure electric mode by limiting motor …
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The feasibility of using electrostatic charge condition monitoring for lubricant additive screening
… used to simulate: engine valve-train, manual transmission synchroniser and automatic transmission clutch tribo-contacts. Additive performance in these simulated contacts was assessed by electrostatic surface charge measurements and cross-correlated with friction, wear and off-line surface …
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Design and evaluation of an automatic gear-shifting system for manual wheelchairs
… many tasks of daily living. We developed an automatic gear-shifting system (AGS) for manually propelled wheelchairs. The AGS has three speeds – first gear: for ascending slopes or traversing compliant surfaces, second gear: traditional direct-drive for everyday situations, and third gear: for …