| DUAL-MOTOR FULL-WEIGHT ELECTRIC POWER STEERING SYSTEM FOR COMMERCIAL VEHICLE |
| Yaohua Li, Qianlong Feng, Yangsen Zhang, Youfei Nan |
| Chang’an University |
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| ABSTRACT |
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In order to study the electric power steering system (EPS) which is suitable for the steering characteristics of
commercial vehicles, the effect of weight on steering performance is analyzed, and a dual-motor full-weight EPS system is
proposed. Firstly, the full-weight assist characteristics are studied, and two current distribution schemes and corresponding
fault-tolerant control strategies are proposed according to the structural characteristics of dual-motor EPS system. By
comparing with the traditional single-weight EPS system, it is proved that the full-weight EPS system improves the control
stability and makes the driver get a better road feeling. Through the double line change test and step test, the effectiveness of
the two current distribution schemes are verified, and it has better fault-tolerance performance. By comparison, the faulttolerance
performance of scheme two is better than that of scheme one. |
| Key Words:
Power steering system, Dual-motor, Full-weight, Current distribution schemes, Fault-tolerant control
strategies |
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Corresponding Author.
Yaohua Li , Email. 
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