【摘要】 该文从直流脉宽调速实验的要求出发 ,采用了数字式控制、双极模式可逆 PWM系统、PWM模块结构和不同类型典型的器件以及相应的电路 ,以此为基础制作的实验箱 ,能面向使用对象 ,可以在实验过程中灵活地调整和改变 ,满足不同的实验要求。更多还原

【Abstract】 The article sets out from experimental demands about velocity controlled by pulse width modulation D.C.. The system adopts numerical mode control, reversible PWM system of double poles, PWM pattern construction and different types of typical electronic parts and relevant network. Experiment box based on this system cam face up to users, and is adjustable and changeable to meet different experimental demands.更多还原