The result shows the new variable speed pump electric-hydraulic servo control system can run in four quadrant, meet the need of low cycle material test, realize energy conservation significantly.

• 结果表明，新设计的变转速泵控电液伺服控制系统可以实现四象限运行，满足材料的低周疲劳试验要求，同时可以实现显著的节能效果。