为了能够对具有反向传动间隙的可逆旋转机构的轴向位移量进行较精确地测量,并数字显示,目前我国较为普遍采用的方法是,应用感应同步器作为位移直接检测元件进行鉴幅式或鉴相式的闭环测量.这种测量方法固然精度很高,但闭环测量系统庞大,电路结构甚为复杂,成本很高且装配调试以及维修也均感不便. In order to be able to accurately measure the axial displacement of a reversible rotating mechanism with backlash and show the digital display, the most commonly used method in our country at present is to use inductive synchronizer as the displacement direct detecting element to check the amplitude or Phase-sensitive closed-loop measurement. Although this measurement method is very high accuracy, but the closed-loop measurement system is huge, the circuit structure is very complex, high cost and assembly and debugging and maintenance inconvenience.