一种基于相平面分析的转向系统死区逆变换补偿控制仿真

A Control Simulation for Steering System Based on Dead-zone Inverse Transforming Compensation With Phase-plan Analyzing

针对电动车转向机构中存在的电机死区,提出一种基于相平面分析的死区逆变换补偿电机控制方法。通过对执行机构实验数据的分析推导出其数学模型,并且针对转向系统执行机构存在死区的特点设计了逆变换补偿的控制算法以消除死区对控制系统的不良影响。利用相平面分析对控制的效果进行了仿真分析,得到使用死区逆变换的非线性补偿方法可以有效的缩小控制的死区,提高控制的精度的结论。通过方针后,证实该控制方法行之有效。

A control method based on dead-zone inverse transforming compensation with phase-plan analy- zing was presented for electric power steering system whose execution mechanisms of steering system included dead-zone. The paper derived mathematical model for execution mechanisms from empirical data and de- signed a control approach called ＂Dead-zone Inverse Transforming Compensation＂ to eliminate ill effects caused by dead-zone. A conclusion that the method could reduce the dead-zone and improve the control pre- cision was drawn by phase-plan analyzing. It was proved that the method was effective by simulation.