毕业设计 初稿 - 副本.docxVIP

摘 要转速、电流双闭环控制直流调速系统是性能很好、应用最广的直流调速系统。基于设计题目，直流电动机调速控制器选用了转速、电流双闭环调速控制电路。在设计中调速系统的主电路采用了三相全控桥整流电路来供电。本文首先确定整个设计的方案和框图。然后确定主电路的结构形式和各元部件的设计，同时对其参数的计算，包括整流变压器、晶闸管、电抗器和保护电路的参数计算。接着驱动电路的设计包括触发电路和脉冲变压器的设计。最后，即本文的重点设计直流电动机调速控制器电路，本文采用转速、电流双闭环直流调速系统为对象来设计直流电动机调速控制器。为了实现转速和电流两种负反馈分别起作用，可在系统中设置两个调节器，分别调节转速和电流，即分别引入转速负反馈和电流负反馈，二者之间实行嵌套联接。从闭环结构上看，电流环在里面，称作内环；转速环在外边，称做外环。这就形成了转速、电流双闭环调速系统。先确定其结构形式和设计各元部件，并对其参数的计算，包括给定电压、转速调节器、电流调节器、检测电路、触发电路和稳压电路的参数计算然后最后采用MATLAB/SIMULINK对整个调速系统进行了仿真分析，最后画出了调速控制电路电气原理图。关键词：双闭环；转速调节器；电流调节器10KW DC motor speed control system design of irreversibleAbstractSpeed ??and current dual-loop control performance of DC speed control system is very good, the most widely used DC drive system. Based on the design, DC motor speed controller selects the speed and current dual-loop speed control circuit. Speed ??control system in the design of the main circuit using three-phase full controlled bridge rectifier circuit to supply. Firstly, determine the overall design of the program and block diagram. Main circuit structure and then determine the form and design of the components, while the calculation of its parameters, including transformer, thyristor, reactors and protection circuit parameter calculation. Then drive circuit including the trigger circuit and the pulse transformer design. Finally, the focus of this DC motor speed controller circuit design, this article uses the speed and current dual closed loop DC system for the object to design DC motor speed controller. In order to achieve speed and current role of two negative feedback, respectively, can be set in the system of two regulators, respectively, regulate speed and current, respectively, speed the introduction of negative feedback and current negative feedback, between the implementation of nested joins. From the closed-loop structure, the current loop on the inside, called the inner ring; speed ring on the outside, called the outer ring. This form of speed and current dual-loop speed control syste