【摘要】 采用标准距离参照原理来测量液压缸位移的超声波位移测量系统，将起声波位移传感器安装于液压缸内部，克服了液压油质、油温、油压等变化引起的误差。更多还原

【Abstract】 The ultrasonic wave sensor system embed in hydraulic cylinder measures the cylinders displacement referring to a standard distance.By this way it decreases the error affected by the change of the temperature and pressure and nature of hydraulic oil.更多还原