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概述 1958～1964年期间,随着汽轮发电机容量的不断增大,迫切需要新的控制系统来满足大容量机组的控制要求。以油压表示某些变量(如速度)的长油管道,会使控制系统产生延迟现象。由于蒸汽阀体积加大,用20kg/cm~2的压力油不能使伺服机构获得足够准确的阀门开度。如果增加油动机活塞直径来加大提升力,则动态响应又不容许。另外,如果提高供油压力,这就要求油动机间隙很小以控制漏油量,而这样小的间隙会增
Overview During 1958 ~ 1964, with the continuous increase of steam turbine generator capacity, new control system was urgently needed to meet the control requirements of large capacity units. A long oil pipeline that expresses certain variables (such as speed) with hydraulic pressure can cause a delay in the control system. As the steam valve to increase the size, with 20kg / cm ~ 2 pressure oil can not make the servo enough accurate valve opening. If you increase the diameter of the oil-powered piston to increase the lifting force, then the dynamic response is not allowed. In addition, if the supply pressure is raised, this requires that the oil motive clearance be small to control the amount of oil leakage, and such a small clearance will increase