【 中文摘要 】本发明涉及一种基于流量电液伺服阀的施力系统及其控制方法，在垂直加载伺服液压缸9的的液压回油管路增加比例节流阀，起到溢流的作用，以卸掉垂直加载伺服液压缸9液压回油管路的一部分流量，可适度调节垂直加载伺服液压缸9在施力过程中的产生的液压刚度，减小施力过程动态加载力的影响。在施力系统中，采用分段自适应PID控制方法，将自适应PID的控制参数进行分段处理，使控制系统快速调节以达到稳定状态，实现自动控制溢流大小，缓冲施力过程中的动态冲击作用。

【 英文摘要 】The invention relates to a flow rate electro-hydraulic servo valve based power supplying system and a control method thereof. The flow rate electro-hydraulic servo valve based power applying system and the control method thereof are characterized in that a proportional throttling valve is additionally arranged in a hydraulic oil returning pipeline of a vertical loading servo hydraulic cylinder 9 so as to achieve the overflowing effect, and some flow rate of the hydraulic oil returning pipeline of the vertical loading servo hydraulic cylinder 9 can be discharged; the hydraulic rigidity producedby the vertical loading servo hydraulic cylinder 9 in the power applying process can be properly adjusted, and thus the influence of dynamic loading force in the power applying process can be reduced; the power applying system is that a sectional self-adaptive PID control method is carried out, and the control parameters of the self-adaptive PID are subjected to sectional handling, so that a control system is capable of being quickly adjusted to reach a stable state, and as a result, the effects of automatically controlling overflowing strength and buffering dynamic impact in the power applying process are achieved.

【 技术功效 】