一种电机直驱操动机构行程曲线规划方法

One type of motor direct-drive operating mechanism travel curve planning method

电机直驱操动机构过控制电机按照行程曲线运行,直接驱动高压开关实现分合闸动作。针对电机直驱操动机构行程曲线缺乏系统性规划方法,无法与机构运行特性相匹配,规划、验证及优化周期长,可移植性差等问题,结合多项式模型与负载特性模型提出一种电机直驱操动机构行程曲线规划方法。根据运动学和动力学分析,建立电机直驱操动机构负载特性数学模型。利用多项式模型生成行程曲线簇,并结合电机直驱操动机构及高压开关特性建立多目标优化算法,筛选出最佳行程曲线。仿真和实验结果表明,所提方案可以实现电机直驱操动机构及高压开关的稳定、可靠运行,与传统的行程曲线规划方法相比,可以实现10.3%的能耗优化,能够进一步提升控制系统整体功率密度。

The motor direct-drive operating mechanism directly drives the high-voltage circuit breaker to realize the opening and closing actions by controlling the motor to run according to the travel curve.Ai-ming at the lack of a systematic planning method for the travel curve of the direct-drive operating mecha-nism,which cannot match the operating characteristics of the mechanism,has a long planning,validation and optimization period,and has poor portability,a travel curve planning method for the direct-drive op-erating mechanism was proposed by combining the polynomial model and the load characteristic model.Based on the kinematics and dynamics analysis,a mathematical model of the load characteristics of the direct-drive operating mechanism was established.The polynomial model was used to generate travel curve clusters,and a multi-objective optimization algorithm was established by combining the characteris-tics of the motor direct-drive operating mechanism and the high-voltage circuit breaker to screen out the optimal travel curves.Simulation and experimental results show that the proposed scheme can achieve stable and reliable operation of the motor direct-drive operating mechanism and high-voltage circuit break-er,and compared with the traditional travel curve planning method,it can optimize the energy consump-tion by 10.3%,which can further improve the overall power density of the control system.