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本文介绍以MCS-51系列单片机作为控制器的电液比例压力阀液压施力系统。一、问题的提出和系统性能的提高在目前的液压控制中,由于伺服阀在使用、维护及造价等方面的缺陷,限制了它的广泛应用,所以在一般液压系统中仍为普通的开关控制方式,这种方式的控制压力是不连续的,没有反馈,且精度较低。在70年代初期研制出的比例阀,其性能和价格介于伺服阀和开关阀之间,逐渐被应用于生产。我们用8031控制比例阀来提高其控制性能,配接有A/D、D/A转换,能对系统进行程控或实时控制,而且单片机作为比例控制回路中的求和及校正点,构成了闭环控制系统,这样用于一些压力变化速度不是很
This article describes the MCS-51 series microcontroller as the electro-hydraulic proportional pressure valve hydraulic force system. First, the problem raised and improved system performance In the current hydraulic control, due to the servo valve in the use, maintenance and cost defects, which limits its wide range of applications, so the general hydraulic system is still a common switch control Way, the control pressure in this way is not continuous, there is no feedback, and the accuracy is low. Proportional valves developed in the early 1970s, the performance and price range between the servo valve and the on-off valve, gradually being used in production. We use the 8031 control valve to improve its control performance, with the A / D, D / A conversion, the system can be programmed or real-time control, and the microcontroller as a proportional control circuit in the summation and correction points, forming a closed loop Control system, so for some pressure changes speed is not very good