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液压支架电液控制用微电机驱动先导阀采用微电机为电－机械转换器，二位三通球阀为先导阀，本文论述了这种微电机驱动先导阀及其主要环节微电机驱动电路、微电机、杠杆放大机构和先导阀等的动态特性，并进行了相关实验研究．
The micro-motor-driven pilot valve for electro-hydraulic control of hydraulic support adopts micro-motor as electro-mechanical converter and two-position three-way ball valve as pilot valve. This paper discusses the micro-motor drive pilot valve and its main part of micro-motor drive circuit. Motor, lever amplification mechanism and pilot valve, etc. The dynamic characteristics and related experimental research.