双机直流拖电控系统设计.doc

双机直流拖动电控系统设计 摘 要 本文设计的双机直流拖动电控系统，主要应用在楼宇大厦中天窗的自动开关控制方面。其主要功能是对两个直流电机进行速度和位置控制，确保电机在一定干扰条件下，转速恒定，电机间的行程偏差小，并提供通信控制接口。该系统也是电气自动化技术在智能建筑中一个实际应用。 文中在明确系统设计要求和具体性能指标的前提下，深入分析了直流脉宽调速系统的工作原理以及转速、位置的闭环控制方案。最终确定采用基于PI调节器的转速闭环调节与基于标准行程的位置调节相结合的转速、位置闭环控制系统。并运用Matlab中的Simulink对控制系统进行了仿真研究。仿真结果表明，控制系统的性能良好，满足设计要求。 论文立足于工程实际应用和系统的具体要求，从确定的转速、位置闭环控制方法出发，对控制系统的硬件电路实现进行研究，完成系统的模块划分和器件选型，设计了以C8051F320单片机和LMD18200直流电机集成驱动芯片为核心的硬件电路。在软件设计上采用KEIL C51作为软件开发工具，按照增量式的程序设计方法，对系统主程序模块和其他功能模块进行编程。经过最后的软硬件整合测试，证明系统性能良好。 关键词：双机控制； 转速、位置闭环控制； C8051F320； LMD18200 ABSTRACT This design of the dual DC power control system of DC drive machine, mainly used in building a skylight in the House, the automatic switch control. Its main feature is the two DC motor speed and position control, the motor disturbances in certain conditions, the speed constant, the electrical small deviation between the trip and to provide communication control interface. The system is electric automation technology in a practical application of intelligent building. Paper, a clear system design requirements and specific performance under the premise of in-depth analysis of the DC speed regulating system, working principle and speed, position of the closed-loop control scheme. Finalized based on the speed loop PI regulator regulation and standards-based travel position of a combination of speed and position closed loop control system. And the use of Matlab in Simulink, a simulation control system. Simulation results show that the good performance of control systems to meet the design requirements. Paper based on the practical application of engineering and system specific requirements, from determining the speed, location, method of starting closed-loop control, the control system hardware circuit studies, complete systems and devices division selection module is designed to C8051F320 microcontroller and LMD18200 DC motor driver integrated circuit chip as the core hardware. Adopted in the software design as a software developm