在一套大型结构加载系统的节能改造中，采用一种新型的无须外加辅助油源的自供式伺服变量泵节能控制系统，并针对容积式控制方式中存在的问题，采用非线性变增益补偿法改善系统动态性能．实践表明，该系统具有良好的降低能耗、减少温升的作用；动态补偿方法效果显著 In the energy-saving reform of a large-scale structure loading system, a new self-supplied servo variable-pump energy-saving control system without additional auxiliary oil source is adopted. In order to solve the problems in volumetric control mode, a nonlinear variable gain compensation Improve system dynamics. Practice shows that the system has a good reduction of energy consumption, reduce the role of temperature; dynamic compensation method is effective