双直线电机XY平台的模糊滑模轮廓控制

双直线电机XY平台在加工中负载扰动以及系统参数的变化会使其产生轮廓误差,而且任意轨迹轮廓误差为非线性函数不易进行建模。采用适用于任意轨迹建模的轮廓误差计算法建立双直线电机XY平台的轮廓误差模型并以此误差量作为具有逼近能力模糊滑模轮廓控制器的输入,使误差量在有限时间内趋近于零,以满足XY平台的高精度加工要求.仿真结果表明,所设计的双直线电机XY平台系统具有强鲁棒性和较高的轮廓精度。

Fuzzy Sliding Mode Contour Control of the XY Table of the Double Linear Motor

Load disturbance and system parameter change of the XY table of the double linear motor will produce contour errors in the process, and any trajectory contour error is a nonlinear function for which modeling is difficult. This paper uses contour error calculation algorithm appropriate for any trajectory modeling to establish a contour error model for double linear motor XY table, and uses this contour error as the input of the fuzzy sliding mode contour controller with approximation ability so that the contour error may tend to be zero in limited time to meet the high precision machining requirement of the XY table. Simulation results show that the designed double linear motor XY table system has strong robustness and high contour accuracy.