Finally , the principle of phase - locked - loop for speed control is discussed . the control methods of torque and magnetic levitation force are studied experimentally on a prototype bearingless motor . based on the analysis of shortcomings of the analog control system , a digital control system is proposed 分析了采用锁相环对电机转速进行闭环控制的原理;设计了磁悬浮力的模拟控制器并对磁悬浮血泵电机进行了实验研究;针对模拟控制系统存在的缺点,本文设计了一种数字控制系统。
As a part of the self - adapted yard interlocking system , the main purpose of the research is , by exploring the interlocking relations of the various units one another such as tracks , switches , signals and so on , to find out their forming regulation ; in order to cause the operation of the design of yard plane more simple , more sensible and more efficient , we make use of the visual - formed means . then the yard data formed will be provided to the " self - adapt yard interlocking simulation control system " which is developed by the former postgraduate 本系统作为“自适应车站联锁系统”的子课题,其开发的主要目的是:通过对车站站场内股道、道岔、信号机等各部件联锁关系的研究,找出它们之间的形成规律,然后利用可视化手段,简单、快捷地设计出车站站场平面图,并形成原始的站场数据,为已所开发的“自适应车站连锁模拟控制系统”提供数据支持。
In this part , the design and theory of the main loop , the controller , the inspection and measurement of current and the circuit of orientation of rotor position in the analog control system are presented in detail . the theory of load experiment device and the experiment result are introduced as well 详细论述了模拟控制系统硬件结构的主回路、控制器、电流检测电路以及转子位置检测电路的设计及工作原理,并且给出自行设计的负载实验装置实验原理及实验结果。