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气液速度控制回路综合了气动与液压的优点,可使执行元件获得稳定的低速运动,它已广泛地用于微量进给等装置中。下面就影响气液速度控制回路低速稳定的几个原因以及相应措施作简略分析和介绍。图1是气液速度控制的基本回路,通过改变节流阀阀口的开度来调节液压缸往复运动速度。其最低速可达50毫米/秒～10毫米/秒,有的超低速回路其最低速度可达0.01毫米/分。保证这种回路稳定低速的基本措施有:
Gas-liquid speed control circuit combines the advantages of pneumatic and hydraulic components can achieve stable low-speed movement, it has been widely used in micro-feed and other devices. The following on the gas-liquid speed control loop low-speed stability of several reasons and the corresponding measures for a brief analysis and introduction. Figure 1 is the gas and liquid speed control of the basic circuit, by changing the throttle valve opening to adjust the hydraulic cylinder reciprocating speed. The lowest speed of up to 50 mm / s ~ 10 mm / s, and some ultra-low speed loop of its minimum speed of up to 0.01 mm / min. The basic measures to ensure this loop is stable and low speed are: