A magnetorheological haptic cue accelerator for manual transmission vehicles

This paper proposes a new haptic cue function for manual transmission vehicles to achieve optimal gear shifting. This function is implemented on the accelerator pedal by utilizing a magnetorheological (MR) brake mechanism. By combining the haptic cue function with the accelerator pedal, the proposed...

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Bibliographic Details
Published in:Smart materials and structures 2010-07, Vol.19 (7), p.075016-075016, Article 075016
Main Authors: Han, Young-Min, Noh, Kyung-Wook, Lee, Yang-Sub, Choi, Seung-Bok
Format: Article
Language:English
Subjects:
Accelerators
Applied sciences
Computer science
control theory
systems
Computer systems and distributed systems. User interface
Cross-disciplinary physics: materials science
rheology
Devices
Drives
Electro- and magnetorheological fluids
Exact sciences and technology
Gears
Haptics
Material types
Mechanical engineering. Machine design
Optimization
Pedals
Physics
Rheology
Shafts, couplings, clutches, brakes
Software
Torque
Transmissions (automotive)
Vehicles
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Summary:This paper proposes a new haptic cue function for manual transmission vehicles to achieve optimal gear shifting. This function is implemented on the accelerator pedal by utilizing a magnetorheological (MR) brake mechanism. By combining the haptic cue function with the accelerator pedal, the proposed haptic cue device can transmit the optimal moment of gear shifting for manual transmission to a driver without requiring the driver's visual attention. As a first step to achieve this goal, a MR fluid-based haptic device is devised to enable rotary motion of the accelerator pedal. Taking into account spatial limitations, the design parameters are optimally determined using finite element analysis to maximize the relative control torque. The proposed haptic cue device is then manufactured and its field-dependent torque and time response are experimentally evaluated. Then the manufactured MR haptic cue device is integrated with the accelerator pedal. A simple virtual vehicle emulating the operation of the engine of a passenger vehicle is constructed and put into communication with the haptic cue device. A feed-forward torque control algorithm for the haptic cue is formulated and control performances are experimentally evaluated and presented in the time domain.
ISSN:0964-1726
1361-665X
DOI:10.1088/0964-1726/19/7/075016