【作者】 高宏伟；

【导师】 付兴武；

【作者基本信息】 辽宁工程技术大学 ， 控制理论与控制工程， 2004， 硕士

【摘要】 本文在广泛考查现行的高压变频调速方式的基础上，针对目前各大煤矿中矿井提升机系统调速方式落后的现状，提出用高—低压变频调速方式取代现在广泛使用的转子串、切电阻和晶闸管串级调速方式。论述了高—低压变频调速方式的优越性，系统的组成及系统各部分的设计方法。同时提出将模糊控制理论用于提升机速度给定图跟踪的思想及其实现的基础—单片机和变频器组成的速度闭环结构。给出了模糊控制器的具体实现方式。系统仿真结果表明，采用模糊控制策略后系统响应迅速，稳态误差小，对环境因素等引起的参数变化不敏感，具有较强的鲁棒性。同时证明，在提升机系统中应用模糊控制策略可使提升机系统具有良好的平层性和舒适性。更多还原

【Abstract】 This thesis is based on the wide investigation of modern high-voltage frequency conversion speed-adjusting methods, according to the retarded state of the speed-adjusting methods of current mine hoister systems, using the high-low voltage frequency conversion speed-adjusting method to take the place of rotor sering resistance and thyristor cascade methods which are widely used at present is put forward in this thesis. Explains the priorities of this method, the configuration and the design of it. Meanwhile puts forward the idea of using fuzzy control theory to trace the hoister system’ s hodograph and its realization foundation -the structure of speed closed-loop made of microchip and frequency converter. The results of simulation show that fuzzy control strategy makes the system response rapidly and possess small steady-state error. The system is insensitive to the parameters’ changes and has stronger robustness character. Fuzzy control strategy in hoister systems can make the systems possess better flat layer feature and comfortableness is also proved.更多还原