Journal
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
Volume 115, Issue -, Pages 621-636Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2018.06.024
Keywords
Active front steering system; H-infinity/extension control; Handling stability; Yaw rate
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Funding
- National Natural Science Foundation of China [51775268]
- National Key RAMP
- D Program of China [2017YFB0103604]
- Fundamental Research Funds for the Central Universities [NE2016002]
- Research Project of State Key Laboratory of Mechanical System and Vibration [MSV201606]
- Graduate Innovation Base (Laboratory) Open Fund of Nanjing University of Aeronautics and Astronautics [kfjj20170201]
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In order to solve the contradiction between the control output and the control effect, especially in extreme conditions, this paper designs a H-infinity/extension controller based on active front steering system by introducing the extension control into H-infinity mixed sensitivity control about sensitivity function S/T problem. The proposed controller can transform the control information under the unstable domain into the eligible value range by using dependent degree to tune the control output. And ultimately, the combination of norm and extension transformation extends the stable region of the system. The results of the simulation and vehicle test show that the proposed H-infinity/extension controller can effectively deal with the contradiction between the control effect and the control output under extreme condition, and achieve satisfactory control effect with the control output as small as possible under normal condition. (C) 2018 Elsevier Ltd. All rights reserved.
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