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依据丝杠运动误差的缓时变特性 ,采用迭代自学习控制算法对丝杠的运动误差进行在线学习和预报 ,作为控制系统的前馈量 ,并结合反馈回路 ,形成丝杠运动误差的闭环迭代自学习控制。理论分析和实验结果表明 ,该控制策略对于控制丝杠的运动误差是有效的。
According to the time-varying characteristics of the movement error of the screw, an iterative self-learning control algorithm is used to learn and predict the movement error of the screw on-line as the feedforward of the control system, combined with the feedback loop to form a closed-loop iteration Self-learning control. Theoretical analysis and experimental results show that this control strategy is effective in controlling the movement error of lead screw.