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1. Piezo-actuation for vehicle control system
Piezo materials can be used as an actuator which can produce very fine (several nanometres) movement. While the piezo actuator is engaged, it consumes very little power to keep it in that position. The problem with the piezo actuator in the real application is that it can only produce very limited displacement. Different methods to amplify the small movement are researched.
The possible application areas using piezo actuator in vehicle control are: piezo direct braking system, vehicle suspension system, gear transmission system and different control valves.
For information about general linear piezo actuator and its applications, you can read this paper.
2. Piezo actuated pneumatic valve
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Pro/E and AutoCAD are used for valve design and theoretical analysis. The images on the left are a 3D Pro/E model of the valve and a ANSYS Analysis Model for the key component of the prototype. |
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A photo of the real prototype and a photo of the testing rig based on
LabView system.
A piezo amplifier and a precision position sensor amplifier are used in the system. |
3. A new hybrid linear piezo actuator (EPSRC Proposal)