【摘要】 针对PMSM位置伺服系统存在非线性、强耦合等特征,提出了一种基于分数阶PID和分数阶滑模控制的新型融合控制策略。通过检测位置误差、速度及负载转矩,归一化处理后带入构造的二次性能指标函数,根据其数值动态改变分数阶PID和分数阶滑模控制器输入到被控对象控制量的权重值大小,从而确保提出的新型融合控制策略具有快速跟踪和抗扰动能力。数值仿真实验结果表明:新型融合控制策略比分数阶PID和分数阶滑模控制拥有优良的动静态性能和较好的鲁棒性。更多还原

【Abstract】 According to the characteristics of PMSM position servo system with nonlinearity and strong coupling,a new fusion control strategy based on Fractional Order PID(FOPID)and Fractional Order Sliding Mode Control(FOSMC)is proposed. Through testing the position error,the speed and the load torque,put the normalized result into the constructed two performance index function.Then by calculating the value of the two performance index function,change the weight value of the FOPID and FOSMC input to the controlled object dynamically,so as to ensure the fast tracking ability and antidisturbance ability of the proposed fusion control strategy. Numerical simulation results show that,the new fusion control strategy has more excellent dynamic and static performance and better robustness than the FOPID and FOSMC.更多还原