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测量液压元件(液压泵或液压马达)的总效率以往都是采用机械测量方法,即根据测量的液压元件输入功率和输出功率计算得出液压元件的总效率的方法。然而,这种方法所用的测量装置体积大,成本高,测量仪表的数目多而且可靠性又不太高,计算的方法也稍复杂。因此,最近出现了一种基于热力学原理的总效率测量方法。这种方法的测量精度高,而且又便于与计算机联用。下面将分别介绍这两种测量方法的主要特
Measuring the overall efficiency of hydraulic components (hydraulic pump or hydraulic motor) In the past, the mechanical measurement method was used to calculate the total efficiency of a hydraulic component based on the measured hydraulic component input power and output power. However, the measuring device used in this method is bulky, costly, has a large number of measuring instruments and is not very reliable, and the calculation method is somewhat complicated. Therefore, recently a total efficiency measurement based on thermodynamic principles has emerged. This method of measurement accuracy, but also easy to use with the computer. The following will introduce the main characteristics of these two measurement methods