论文部分内容阅读
本文介绍已用于某厂流速仪检定车电控系统之一部分.这个系统主回路采用可控硅三相全桥交叉联结供电;控制回路为环流可控并具有电流内环、速度外环和鉴频鉴相的三环结构,同时控制2台3千瓦或4台22千瓦直流电动机,带动10吨重的拖车,在0.01米/秒—10米/秒的车速中稳定工作.用锁相环作频率给定,把锁相调速用在中动率电机拖动,对于保证给定和反馈的准确性和再现性,扩大调速范围,改善动态品质,提高系统稳速精度,都具有明显效果,使调速范围达到1∶2500,系统精度优于0.1％.
This article describes a plant has been used in a part of the flowmeter test car electronic control system.The main circuit of the system using SCR three-phase full-bridge cross-linked power supply; control loop for the controllable circulation and current inner ring, outer ring speed and Kam Frequency identification phase of the three-ring structure, while controlling 2 3 kW or 4 22 kW DC motor, driving a 10-ton trailer at a speed of 0.01 m / s -10 m / s speed stability using phase-locked loop Frequency given, the use of phase-locked speed motor in the rate of drag, for the given and feedback to ensure the accuracy and reproducibility, to expand the speed range, improve dynamic quality, improve system accuracy, have a significant effect , To speed up the range of 1:2500, the system accuracy is better than 0.1%.