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文章介绍了以PHILIPS P87LPC768单片机为核心的极压仪(钻井液润滑测试仪)测试的基本原理,并结合直流伺服电机的控制技术,阐述了直流电动机PWM调速原理,电枢电流斩波控制中为使电感电流连续导通斩波器开关频率的选取,以及在整流过程中产生的纹波抑制的理论和方法问题。
This paper introduces the basic principle of extreme pressure meter (drilling fluid lubrication tester) with PHILIPS P87LPC768 as the core. Combining with the control technology of DC servo motor, the principle of DC motor PWM speed regulation, the armature current chopping control In order to make the inductor current continuous conduction chopper switching frequency selection, as well as ripple suppression in the rectification process theory and method problems.