脉动型负载的数字式直流调速器

Development of the digital DC-speed controller of the pulse load

针对脉冲型负载,以1~2 kW直流电机驱动的电动跑步机为例,设计了一种电动跑步机专用的数字式直流调速器.该调速器采用FUZZY-PID算法,自动调整PID参数,产生PWM信号,实现对跑步机速度的控制.该装置结构简单、性价比高,也可应用于其他具有同类负载特征的小功率直流调速系统.

With the pulse load, the digital DC-speed controller which is used in electric running-rigs by a l^2kW DC motor. Full use is made of the P87LPC768 MPU and the FUZZY-PID algorithm. The digital DC-speed controller can automatically adjust the PID parameter and generate the PWM pulse that can accurately control the electrically driven running-rigs＇ velocity. It has a simple structure and a high performance-to-price ratio, and at the same time it can be applied to other small power DC speed governing systems of the same load types.