直流调速数字控制系统的设计.pdfVIP

直流调速数字控制系统的设计 摘 要 随着集成电路、现代电力电子技术、控制理论的发展，电机控制技术得到了 飞速的发展，已由过去提供动力为目的应用转向对电机进行精确的控制。电机控 制器也由模拟分立组件构成的电路向数模混合、全数字电路方向发展。直流电机 由于具有响应迅速、精度和效率高、调速范围宽、负载能力大、控制性能优良等 特点，被广泛应用于各类闭环和半闭环控制系统中。本文设计的数字化直流调速 系统是用直流电动机作为被控对象，由80296SA单片机作为控制器来实现的。特 点是用单片机取代模拟触发器、电流调节器、速度调节器以及逻辑切换等硬设备。 该系统采用光栅传感器其测速，全数字IGBT触发方法，速度、电流双闭环PI调节 器。本设计包括硬件设计和软件编程。 关键词: 直流调速系统，数字控制，双闭环，单片机 II 直流调速数字控制系统的设计 Abstract With the development of integrated circuit, Electric Power and Electronic Technology and the theory of automatic control, the technology of motor control has largely developed. It has changed from the purpose of providing power to the goal of exactly control. Motor controller composed by separated analog devices before has developed into analog -digital or full digital controller. The characters of direct current motor are rapid response, high precision, great efficiency, heavy load ability and excellent controlling performance, so it is applied into all kinds of closed loop and half-closed loop control system. The speed system controlled by digital method is designed in this paper which is composed of DC motor and 80296SA single chip microcomputer. The DC motor is used as the control object and the 80296SA single chip computer