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折弯产品质量的提高对折弯机加载系统的准确性与快速响应能力提出了更高的要求。基于一款折弯机电液比例伺服控制系统,建立了其非线性数学模型并验证了系统稳定性。为消除系统稳态误差并提高响应速度,提出模糊PID控制策略,整定了PID控制参数,并对其进行了仿真试验,从而减小了系统的稳态误差,提高了其响应速度,并避免了人为调整PID控制参数的随机性,提高了控制系统的工作效率。
Bending product quality improvement on the bending machine loading system accuracy and rapid response capacity put forward higher requirements. Based on a bending electro-hydraulic proportional servo control system, a nonlinear mathematical model is established and the system stability is verified. In order to eliminate the system steady error and improve the response speed, a fuzzy PID control strategy is proposed, the PID control parameters are set and simulated. Artificially adjust the randomness of PID control parameters, improve the work efficiency of the control system.