分析了可控流量固体火箭冲压发动机燃气流量调节阀中电动执行机构的间隙非线性特性对控制系统的稳态性能及动态性能的影响,对几种控制策略进行对比研究,最终选用带死区补偿的PI控制器作为燃气流量控制器,进行了数字仿真和半实物仿真。结果表明,传动机构间隙会造成闭环控制系统的自振荡,采用死区补偿能够有效抑制系统振荡,达到控制指标。

The effect of backlash nonlinearity of gas control valve of flow-controllable solid rocket ramjet with electromotor on steady-state and dynamic performance of control system was analyzed in this paper. Several controllers were compared and PI controller with deadzone compensator was used. The digital and hardware-in-the-loop simulation tests show that backlash nonlinearity can result in oscillation and this control arithmetic is feasible.