In the process of writing this thesis, first, based on the theory of the DC motor, controller and sensors, the control circuit has been designed.
在论文的写作过程中，首先对直流电机、微控制器和传感器等进行了深入的研究，在理论基础上，设计了系统的控制电路。
The method of finite state machine together with PWM circuit is given to realize the algorithms of Voltage Space Vector control and 120 electrical Angle changing phase control of DC brushless motor.
针对电机空间矢量控制和直流无刷电机120电角度换相控制算法的电路实现，采用了控制状态机与PWM发生电路相结合的方法。
The simulation results show that the amplifier of improved control circuit not only solve the question of output DC offset, but also keep the voltage gain lowered by voltage compensation technique.
仿真结果表明，改进控制电路后的系统不但解决了输出直流偏置问题，而且解决了电压补偿方法所造成的放大器增益下降问题。
Using PWM to drive motor, and we design a circuit in DC serve control system.
利用PWM驱动方式控制电机的转动，并设计出了直流伺服控制系统硬件电路图。
In the system, Intel 80c196mc is used as control center and IPM is used as an intelligent power device in the main circuit of AC DC AC voltage type inverter.
该系统以80c 196MC为控制核心，采用IPM智能功率模块为功率元件，组成了交直交电压型逆变器主回路。
The operation and characteristics of the DC DC converter are discussed, and its control and protection circuit is presented. It is verified by experiment.
分析了该变换器的工作原理和特性，简介了变换器的控制和保护电路，并用实验进行了验证。
A 150a DC TIG welding machine is developed, using specially designed thyristor rectifier and IC control circuit, which is simple, reliable and of high quality.
研制了一种150a直流tig焊机，采用特殊的晶闸管主电路和集成电路控制技术，具有简单、可靠和高性能的特点。
DC power supply is mainly provide constant voltage power supply for control circuit, driver circuit and a variety of protection circuits and allows the system to work properly.
直流稳压电源主要是用于对系统中的控制电路、驱动电路以及各种保护电路提供恒压电源，使得系统能够正常工作。
A control circuit for transition control in DC motor field excitation on large power shovel has been designed.
设计了大型挖掘机械直流电动机激磁电路的转换与控制电路。
The paper establish main circuit which use AC-DC-AC inverter. To TMS320LF2407A as the core of control circuit, low-frequency inverter technology has been studied.
本文建立以“交-直-交”逆变桥为主电路，控制电路以TMS320LF2407A为核心，对低频逆变技术进行研究。
In this paper, we introduced the control theory of brushless DC motor, and proposed the design scheme, software method and hardware electric circuit for whole system.
介绍了无刷直流电动机的控制原理，给出了系统设计的整体方案，并详述了硬件电路和软件程序设计。
This article presents a design of permanent magnetic brushless DC motor control system and mainly involves the hardware circuit design of speed closed loop and power module drive.
介绍了一种永磁无刷直流电机控制系统的设计方案，主要涉及速度闭环和功率模块驱动的硬件电路设计；并通过实验证明该设计可直接用于小型无刷直流电机的控制。
DC constant current power supply circuit based on current closed-loop feedback control is brought (forward) in this paper and how to design the circuit is also emphatically introduced.
开发了一种基于电流闭环反馈控制的数控直流恒流源，介绍了该电路的设计思路。
This paper introduces the protecting methods of the output end of DC motor's control cabinet, and analyzes the principle of the circuit.
文章介绍了直流电机控制柜输出端的保护方法，并对电路进行原理分析。
The improved power output control circuit includes a detector circuit for rectifying an input signal to produce a DC output representing power level of the input signal.
该改进的功率输出控制电路包括检波器电路，用于将输入信号整流产生代表输入信号功率电平的DC输出。
This paper makes use of ordinary power supply chip TL494, which having characteristic of PWM output, DC motor speed-varying control circuit has been designed.
本文利用最常见的用于电源的PWM电压调节芯片TL494，设计成直流电机调速控制电路。
The power and control circuit, clutch for dc power supply for general 24 volts (special orders except).
电源及控制线路，离合器电源为一般为直流24伏(特殊定货除外)。
The protection of feeder line in DC traction supply system is based on microcomputer, which is used to control and protect the high-speed circuit breakers.
直流牵引供电系统的馈线保护以微处理器为基础，用来完成对直流快速断路器的控制和保护。
The circuit is mainly composed of a PLC, a control relay, a DC speed regulation plate and a DC motor.
主要有PLC、控制继电器、直流调速板、直流电 机组成。
The circuit includes a sequential logic drive circuit, a DC bias voltage circuit and a monolithic temperature control circuit for the focal plane array.
其中包括时序逻辑驱动电路、直流偏置电压电路及单芯片焦平面温度控制电路。
The power-factor-correction circuit and the DC/DC converter are realized by average-current control and peak-current control, respectively.
功率因数校正级和DC/DC 变换级分别采用平均电流控制和峰值电流控制方法。
The power-factor-correction circuit and the DC/DC converter are realized by average-current control and peak-current control, respectively.
功率因数校正级和DC/DC 变换级分别采用平均电流控制和峰值电流控制方法。
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