提出了一种适用于电液位置伺服系统这类宽频带系统的新的自适应控制方法。该方法简单实用，能有效地避免自适应控制中的逆不稳定问题。仿真结果表明，这种方法对抑制电液位置伺服系统时变参数的影响有明显作用，能够获得相对良好的控制效果。 A new adaptive control method suitable for wide band systems such as electro-hydraulic position servo system is proposed. The method is simple and practical, which can effectively avoid the inverse instability problem in adaptive control. The simulation results show that this method has a significant effect on suppressing the time-varying parameters of electro-hydraulic servo positioning system, and can achieve relatively good control effect.