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微处理机自从七十年代问世以来,正以二年翻一番的速度迅猛发展。它的应用几乎渗透到人类社会、经济、生产、生活的各个领域。为了使微机用于液压系统,需要一系列电子一液压“接口”没备。(如图1的方框图所示)这种采用伺服阀作为电—液转换和放大器的闭环控制系统,它输出的液压功率可以比输入的电信号功率大千百倍,而且具有极其高的重复定位精度和极其灵敏的响应速度。这种系统的造价较高,日常使用维护也相当困难。近年来在一般精度的场合已采用比例阀代替伺服阀,精度虽略有降低,其复杂程度并不减少很多。而在工业生产及交通部门使用的液压装置,其中
Microprocessors have been rapidly evolving at a rate of doubling in two years since their introduction in the 1970s. Its application infiltrated almost every area of human society, economy, production and life. In order for the computer to be used in a hydraulic system, a series of electronic-hydraulic “interfaces” are required. (As shown in the block diagram of Figure 1). This closed-loop control system using servo valves as electro-hydraulic converters and amplifiers outputs hydraulic power a hundred times greater than the input electrical signal power and with extremely high repeat positioning accuracy and Extremely responsive response speed. The higher cost of such a system, routine maintenance is quite difficult. In recent years, the general accuracy of the occasion has been used instead of proportional valve servo valve, although slightly lower precision, the complexity is not reduced a lot. And in the industrial production and transportation departments using hydraulic devices, among them