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针对无头轧制系统钢坯闪光对焊中顶锻力伺服特性要求,提出了基于自抗扰控制技术及力同步误差反馈校正的复合控制策略.为了更准确地体现所研究电液力伺服系统的非线性、参数时变性以及执行机构的耦合特性,采用AMESim平台进行了系统建模.针对顶锻力伺服的快速大力值加载特性、顶锻过程的变刚度特性、双对接液压缸同步均载要求以及更好地消除系统的其他干扰,设计了基于自抗扰控制技术和比例积分同步误差反馈校正的复合控制策略,以提高系统的鲁棒性、力伺服的快速响应性以及双对接液压缸的同步性能.通过仿真研究,在局部冲击干扰的条件下,仿真结果证实了所提控制策略的有效性和可行性.
In order to meet the requirements of servo performance of middle-top forge flash flash butt welding of headless rolling system, a hybrid control strategy based on ADRC technology and force synchronous error feedback correction is proposed.In order to more accurately reflect the research of electro-hydraulic servo system Nonlinear, parametric time-varying and actuator coupling characteristics, the system was modeled by AMESim platform.According to the rapid loading characteristics of the forging servo, the variable stiffness of the forging process, the synchronous load sharing requirements of the double-docking hydraulic cylinder And to better eliminate other interferences of the system, a hybrid control strategy based on ADRC technology and proportional integral synchronization error feedback correction is designed to improve the robustness of the system, the fast response of force servo and the performance of double-docking hydraulic cylinder The simulation results show that the proposed control strategy is effective and feasible under the condition of local impact disturbance.