电动助力转向系统的摩擦补偿控制

2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES) Pub Date : 1900-01-01 DOI:10.1109/IESES.2018.8349876

Pan-Pan Du, H. Su, G. Tang

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引用次数: 1

摘要

研究了汽车电动助力转向系统的摩擦补偿控制问题。在分析汽车辅助控制需求的基础上，建立了eps的数学模型，提出了双闭环控制系统结构。基于期望方向盘转矩的辅助特性，分别设计了带机械摩擦补偿器的转矩控制律和带电摩擦补偿器的电流控制律。理论分析表明，双闭环控制系统结构能使在不同机械摩擦力矩下施加到方向盘上的输出转矩始终接近期望的方向盘转矩，带摩擦补偿器的控制律能使方向盘起动平稳。仿真结果表明，该控制系统结构和摩擦补偿控制策略易于实现，控制效果较好。

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Friction compensation control for electric power steering systems

This paper considers friction compensation control problems for electric power steering systems (EPSs) of vehicle. According to the requirement analysis of vehicle assistant control, a mathematical model of EPSs is established, and a double closed-loop control system structure is proposed. Based on the assist characteristic of the desired steering wheel torque, we design a torque control law with mechanical friction compensator and a current control law and with electrical friction compensator respectively. Theory analyses shows the double closed-loop control system structure can make the output torque applied to the steering wheel at different mechanical friction torques are always close to the desired steering wheel torque, and the control laws with friction compensators can make starting steering wheel is smooth. Simulation results show the control system structure and the friction compensation control strategy are easy to implement and the control effect is better.

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来源期刊

2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)

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