大功率包装机械起动最优控制研究

大功率包装机械传统的起动方法是用时间继电器控制串电阻起动，常因延时不准而引起电阻切换时冲击电流过大，起动过程能耗大而使电机过热，缩短了电机的使用寿命。本文提出的时间、转速及电流控制三原则，实现了该类电机起动过程的最优控制，明显减少了起动过程的发热，能延长电机的使用寿命。

An Optimum Start Control System about Wound Rotor Asynchronous Motor

Usually the starting torque is large when additional resistors are connected in series with a wounded rotor asynchronos motor, so this motor are used in a wide variety of areas in the indusny e.g. in large packing machines. It has some shortcomings when controlles only by time, as big step, heavyimpact and can be hardly combined to form a closed loop control. In this pape an optimization starting control system is introduced. A control strategy and the framewor of hardware are introduced in detail.An intergrated control theory camposed of time, speed and current are put forward, and so is a new measure used to detect rev. of asynchronous motor. All about these new ideas and new measuresa have been proven to be correct and parcticable.