在研究活塞式空压机的阀片运动规律时,首先需测定阀片的位移随曲柄转角(或时间)变化的函数关系。目前,广泛采用非电量的电测法,即将所需测量的阀片位移转换成电参数(如电感电容等)。我们在实验室测试工作中,采用了变距离电容式位移传感器。它具有如下优点:结构简单,能实现无接触测量,灵 When studying the movement of the valve plate of a Piston compressor, the displacement of the valve plate as a function of the crank angle (or time) must first be determined. At present, the widely used non-electric power measurement method, that is, the required displacement of the valve plate is converted into electrical parameters (such as inductive capacitance). In our lab testing, we used a variable-capacitance capacitive displacement sensor. It has the following advantages: simple structure, enabling non-contact measurement, spirit