Univ logo Compensator Design for Model-in-the- Loop Testing with H-infinity Optimization Researcher:...
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Transcript of Univ logo Compensator Design for Model-in-the- Loop Testing with H-infinity Optimization Researcher:...
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Compensator Design for Model-in-the-Loop Testing with H-infinity Optimization
Researcher: Jiayang Hu
Supervisor: Prof. Andrew Plummer
University of Bath
UKACC PhD Presentation Showcase
Univ logo
Vehicle suspension
model
Engine Engine
No MiL MiL
UKACC PhD Presentation Showcase Slide 2
Background
Model-in-the-Loop testing is a method in which the test object is split into a physical part and a simulated part, and connected with actuators and sensors.
Multi-Axis Simulation Table
Vehicle EngineThe Shaking Table simulates the movement of vehicle chassis on road.
The Engine is mounted on the Shaking Table and turned on, the interaction between the engine and the simulated chassis is observed.
An Example of a MiL test system:
Univ logo UKACC PhD Presentation Showcase Slide 3
Compensator for MiL Testing
The block Diagram of the Model-in-the-Loop testing system is given as follows:
Movement
Force Feedback
Actuator
Physical
Driving Signal
Sensor
Simulation
Road Profile
Compensator
High frequency vibration
3rd-order transfer function
Very high magnitude high frequency signal may cause the problem of saturation
Univ logo UKACC PhD Presentation Showcase Slide 4
Compensator Design with H-∞ Optimization
Univ logo UKACC PhD Presentation Showcase Slide 5
Compensator Design with H-∞ Optimization
Movement
Force Feedback
Actuator
Physical
Driving Signal
Sensor
Simulation
Road Profile
CompensatorThe high frequency part in the compensated signal is greatly attenuated, without significantly affecting the accuracy of the signal that we want to reproduce.
Univ logo UKACC PhD Presentation Showcase Slide 6
Conclusion and Future Work
The H-infinity optimization method showed its effectiveness in this example.
More study is needed for the weighting functions settings and experiment will start soon.
Thank you for your attention!