一、引 言 在泵、马达等液压元件的研制和生产过程中,需做大量试验,对其各种性能参数如压力、流量、转速、温度、扭矩及其动态性能进行测试,以确定该产品是否符合设计要求,还需作那些改进。过去,基本上是采用指针式仪表指示或通过传感器由二次仪表指示。对动态性能和压力脉动的测试,用光线示波器拍照,测试结果靠眼看、手记,数据后处理由人工计算,逐点绘图。光线示波器拍照的曲线靠人工用尺量出光点轨迹的长度,再与事先标定好的曲线进行比较,才能获得所需数据。这种方法既费工费时,又难免产生人为误差,故已不适应液压技术发展的需要。为改变这种落后状况,我厂研制了 I. INTRODUCTION During the development and production of hydraulic components such as pumps and motors, a large number of tests need to be done to test various performance parameters such as pressure, flow, speed, temperature, torque and dynamic performance to determine whether the product is Meet the design requirements, but also for those improvements. In the past, it was basically indicated by a pointer or by a secondary instrument through a sensor. Dynamic performance and pressure pulsation test, with a light oscilloscope to take pictures, the test results by the eye, notes, data post-processing by the artificial calculation, point by point drawing. Light oscilloscope take pictures of the curve by manually measuring the length of the spot trajectory, and then calibrated with a good curve in order to obtain the required data. This method is not only labor costs, but also inevitably produce human error, it has not adapted to the needs of the development of hydraulic technology. To change this backward situation, I plant developed