当臂杆运行到上下两个极限位置时，分别压下限位开关，切断主控电路，变幅电机停车，达到限位的作用。
When the arm runs to the upper and lower two limit position, respectively press the lower limit switch, cut off the main control circuit, variable amplitude motor parking, to limit the role.
本文用等效电路法对五臂混合环进行了分析，并得出两种改进方案。
Analysis by the use of equivalent circuit method is made for the five-arm ring, and two ways to improve it are found.
提出一种适用于逆变桥臂模块的吸收电路。
This paper presents a novel passive snubber circuit suitable for inverter bridge leg modules.
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