This system USES photoelectric coder as speed detecting sensor, USES PID digital controller as control method, USES PWM signal as control output to regulate speed.
该系统采用光电编码器作为速度检测传感器，控制方式采用PID数字控制，控制输出采用PWM数字信号至驱动电路对电机调速。
The measurement of temperature adopts DS18B20 temperature sensor and the measurement value is displayed by LEDs. The Fuel Cell temperature is controlled by cooling fan which adopts PWM control.
温度的测量用DS18B20温度传感器测量，并用数码管显示测量值，用PWM控制冷却风扇控制温度到恒定值。
And then it studies a number of key technologies around the sensor less brushless DC motor control system: Rotor position detection, motor starting and the PWM control technology.
然后分析研究无位置传感器无刷直流电机控制系统的几项关键技术：转子位置检测、启动和PWM控制技术等。
Followed, it analyses the course of changing phase and distributing of PWM signal. Based on these facts, we present the sensor solution for BLDC motor, design the hardware system and software system.
接着对直流无刷电机的基本组成环节、基本工作原理、运行特性和传递函数作了详细的介绍，分析了直流无刷电机的换相过程和PWM信号的分配情况。
Followed, it analyses the course of changing phase and distributing of PWM signal. Based on these facts, we present the sensor solution for BLDC motor, design the hardware system and software system.
接着对直流无刷电机的基本组成环节、基本工作原理、运行特性和传递函数作了详细的介绍，分析了直流无刷电机的换相过程和PWM信号的分配情况。
应用推荐