【作者】 任玉龙；

【导师】 董砚；

【作者基本信息】 河北工业大学 ， 控制科学与工程， 2011， 硕士

【摘要】 随着科技的发展,在运动控制系统的各个环节应用了电子电力技术、控制技术、交流传动技术等先进技术,以成为传动控制核心的技术。许多高性能电动机的出现使得步进传动控制有了进一步发展,克服了步进传动控制向大容量发展的主要障碍,步进传动控制进入了新的发展时期。本文首先介绍了步进传动的发展以及开关磁阻电动机的基本结构和工作原理,以此作为对开关磁阻电动机步进传动控制系统的理论基础,在深入分析开关磁阻电动机的磁势、转矩以及与定子电流之间关系的基础上,提出了直接控制电动机瞬时转矩的电流定向控制方法,给出了转矩与定子电流之间的表达式,克服了静态角误差,提高了系统的定位精度。本文主要从系统的起动特性,负载抗干扰特性两方面对步进传动控制系统的动态特性进行分析研究。根据系统的性能指标,选择谐波减速器、惯性轮、多极旋转变压器等搭建动态测试平台,并在定子电流定向控制理论下,设计了开关磁阻电动机的控制系统结构。控制器采用TI公司生产的DSP芯片TMS320LF2407A为控制核心,保证实现开关磁阻电动机的定子电流定向控制。最后通过搭建的测试平台,采用电流定向控制策略,验证了开关磁阻电动机步进传动控制系统具有良好的动态特性,为其最优控制和节能控制提供一定的理论依据。更多还原

【Abstract】 With the development of technology, using electronic power technology、control technology、the AC driving technology and other advanced technology in all aspects of motion control systems has become the core of the drive control technology. The emergence of many high-performance motors have promoted the development of step driving control, which can overcome the major obstacle of large capacity and high efficiency, thus step driving control get into a new development period.This paper firstly describes the development of step driving control and the basic structure and working principles of switched reluctance motor. This is the base of SRM’s step driving control . With a deep relationship analysis of the switched reluctance motor magnetic potential, torque and stator current ,this paper proposed a the current direction control of the motor instantaneous torque ,and we give the expression between torque and stator current, which can overcome the error of static angle and improve the positioning accuracy of the system.In this paper, we analyze the starting characteristics of control system and disturbance characteristics of load. According to the performance of system, we build a dynamic testing platform with harmonic reducer, inertia wheels, multi-pole transformer and at the basic knowledge of the stator current oriented control theory, we design the system structure of switched reluctance motor. We adopt a DSP chip TMS320LF2407A as its controller, which can ensure the stator current oriented control realization of the switched reluctance motor.Finally, using the current directional control strategy we build a testing platform .The result show that the stepping driving control system of switched reluctance motor has a good dynamic performance, thus it can provide a theoretical basis of energy-saving control and optimal control.更多还原