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用液压伺服伐控制油缸来操纵电炉电极升降的液压伺服系统是属于三通伐控油缸系统。一般三通伐控油缸系统的设计原则是使油缸的零位控制压力Pc等于油源压力Ps的1/2(1.2.3)。但是在实际的电炉电极控制系统中,有时并不采用Pc=(1/2)Ps这一原则,而采用较低的油源压力,从而降低功率消耗,减少泄漏,或者由于负载变化引起零位控制压力Pc变化,从而使Pc(?)Ps。此时液压伺服系统的特性,将
Hydraulic servo cutting control cylinder to control the lifting of the electric furnace hydraulic servo system is a three-way cutting control cylinder system. The general design principle of the three-way control oil cylinder system is to make the zero control pressure Pc of the oil tank equal to 1/2 (1.2.3) of the oil source pressure Ps. However, in the actual control system of the electric furnace electrode, the principle of Pc = (1/2) Ps is sometimes not adopted, but the lower oil pressure is adopted to reduce the power consumption, reduce the leakage, or the zero Control pressure Pc change, so that Pc (?) Ps. At this point the characteristics of hydraulic servo system will be