直流電動(dòng)機(jī)外文翻譯(文件)
【正文】 , current, torque, speed, angle, etc., so that motor in accordance with the instructions given accurate work. Through puter control, motor performance could greatly improve. ? 2. Speed and current dual closedloop speed control system of the two regulator cascade connection for the outer speed feedback loop, current loop for the inner ring. The speed regulator output current is given, the output amplitude is limited to the maximum current value. Adjust the limit of small amplitude or currentfeedback coefficient can be adjusted easily to change the maximum current. In effect, the braking process, the speed regulator quickly into saturation, the output amplitude limit for the current loop to provide a maximum current setting, the current regulator for the PI regulator, in its regulatory role under the current remained at the maximum when the system is in fact a constantcurrentconditioning system. Since the current loop so that the regulating role of the system, the braking current transitio n process in the best form of transition closer to the ideal waveform. When the speed overshoot, the speed regulator out of saturation, on speed play a major regulatory role, to bee current with the current loop control system. 2 ? 3. Current feedback loop allows the system to enhance the antiinterference ability, ro
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