导　　师： 邓华

学科专业： 080201

授予学位： 硕士

作　　者： ;

机构地区： 中南大学

摘　　要： 大吨位矿山自卸车、重载平板运输车、电传动坦克装甲车等这些大型装备在国家经济、军事领域中起着越来越重要的作用。车辆传动系统的稳定性、同步性能等直接影响运输过程的安全性,加之能源的不断紧张,开发性能更好和符合节能减排的电传动系统逐渐成为研究的热点。本文从工程实际出发,以重载液压升降平板运输车行走驱动系统为研究对象,建立了电传动系统感应电机矢量控制系统模型,提出了基于单神经元自适应PID与偏差耦合相结合的控制方法并应用于多电机同步矢量控制。主要研究内容如下： 1/)分析了重载平板运输车电传动技术基本原理,建立了交流电机数学模型,研究了基于转子磁场定向的矢量控制算法,利用Matlab//Simulink建立了感应电机矢量控制仿真模型,仿真研究了矢量控制系统运行状况。 2/)以三相感应电机矢量控制为研究对象,在速度控制环中采用单神经元自适应PID控制算法,设计了单神经元自适应PID控制器,分析了单神经元自适应PID控制系统的稳定性。仿真研究了单神经元自适应PID矢量控制。 3/)针对平板车的多电机驱动,建立了电传动系统基于偏差耦合的多电机同步矢量控制仿真模型,对同步控制系统进行了分析研究,利用Lyapunov直接法分析了同步控制系统的稳定性。 4/)利用变频调速实验台分别对平板车采用传统PID和单神经元自适应PID控制的感应电机矢量控制调速系统进行了实验研究。 研究表明,单神经元自适应PID结合偏差耦合控制策略构成的多电机同步矢量控制系统能够较好地实现多电机的高精度和高可靠性同步控制。 Large-scale equipments such as large-tonnage mining dump trucks, heavy plate vehicles, electric drive tanks and armored vehicles are playing increasingly important roles in the country's economic and military fields.The stability and synchronization of vehicle transmission systems directly affect the safety of the transport process.In the meantime, energy crisis exists.Thus, electric driving systems having better performance and meeting energy saving have gradually become a research hotspot. In view of practical heavy plate hydraulic lift truck driving systems, a vector control induction motor electric driving system model is established and a single neuron adaptive PID coupled with the bias control method and vector control is proposed for multi-motor synchronous control.The main contents of the thesis are as follows: 1/) The basic principles of electric driving systems for heavy plate trucks are analyzed. The mathematical model of AC motors is established. Vector control system model of induction motors is built by using Matlab//simulink and rotor magnetic field oriented vector control algorithm is studied.. 2/) In view of three-phase induction motor vector control, a Single Neuron Adaptive PID Control System is designed for the speed control loop.The stability of Single Neuron Adaptive PID Control System is studied. The vector control system combining with single neuron adaptive PID is simulated and studied. 3/)In view of multi-motor driving in heavy plate trucks, synchrounous control strategy is proposed based on multi-motor synchronization control and vector control.The stability of the synchronization control system is analysed and studied based on the Lyapunov direct method. 4/) Control performance of traditional PID and the single neuron adaptive PID of inductive motor with vector control is compared by experiments based on a VWF experimental system. Research results show that single neuron adaptive PID combining with relative coupling control strategy including multi-motor s

关 键 词： 交流电传动 矢量控制 偏差耦合 同步控制 单神经元自适应

领　　域： [自动化与计算机技术] [自动化与计算机技术]