前言机液位置系统的结构简单、工作可靠、成本低廉。因此在航空、航天、机床和矿山机械等领域中都被大量采用。由于此类系统的阻尼小,一般没有校正,因此很难设计出满意的系统。目前尚未见到完整的设计方法 Preface Machine position system structure is simple, reliable, low cost. So in aviation, aerospace, machine tools and mining machinery and other fields have been widely used. Due to the small damping of such systems, there is generally no correction and it is difficult to design a satisfactory system. At present, we have not seen a complete design method yet