Experimental Study on Hydraulic Pressure Feedforward and Feedback PID Control of I-EHB System with Friction Disturbance
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- Provide download link
- Format
- Price
- Non-members (tax incl.)：￥6,600 Members (tax incl.)：￥5,280
- Paper/Info type
- SAE Paper
No.2021-01-0979
- Pages
- 1-21(Total 21 p)
- Date of publication
- Apr 2021
- Publisher
- SAE International
- Language
- English
- Event
- SAE WCX Digital Summit 2021
Detailed Information
| Author(E) | 1) Sijie Zhao, 2) Wenlong Chu, 3) Wen-Bin Shangguan |
|---|---|
| Affiliation(E) | 1) South China University of Technology, 2) South China University of Technology, 3) South China University of Technology |
| Abstract(E) | This paper designs the important components and structure of the integrated electro-hydraulic brake system (I-EHB). Firstly, the simplified linear system is modeled, and the transfer function without considering the nonlinear disturbance such as system friction is derived, and the correctness of the linear system is preliminarily verified by AMESim. Then set up the I-EHB system test bench, and use the Stribeck friction model to identify the friction torque parameters in the static and kinetic friction stages of the system to obtain a more accurate friction model. Finally, based on the I-EHB system model of friction disturbance, a pressure-speed-current three-loop cascade PID controller is designed, and a feedforward controller based on the system model is added to form the control structure of “pressure feedforward compensation + pressure-speed-current closed-loop cascade PID”. Then tests are carried out on benches, and the I-EHB system achieves a faster and more stable pressure response than traditional PID control. |
