Compound control allocation strategy of dual aero/jet vane control missile

To solve the control allocation problem of dual aero/jet vane control missile, dynamics e- quations in longitudinal plane are derived, and the structure of compound control loop is designed based on attitude autopilot. Four brief compound control allocation strategies are researched and an- alyzed. Furthermore, a new strategy called chain combination variable proportional coefficient strat- egy based on rudder effect is presented. By simulation of initial climb trajectory, the characteristics of all the strategies are researched, and the results illustrate that the new strategy can meet the re- quirement well.

燃气舵操纵机构摩擦力矩试验技术研究

针对在试验室条件下高效准确评估燃气舵操纵机构摩擦力矩需求,设计了燃气舵舵轴轴承摩擦力矩试验系统,在此基础上进一步搭建了操纵机构摩擦力矩试验系统,充分模拟燃气舵系统实际安装状态,进而提出了摩擦力矩试验方法,揭示了关键轴承摩擦力矩随加载载荷与过载系数变化规律,探究了操纵机构摩擦力矩关键影响因素。试验结果表明,试验系统为准确获取摩擦力矩提供了合理的测试手段,舵轴关键轴承摩擦力矩随加载载荷和过载系数的升高而增大,增加关键轴承之间的距离可以明显减小摩擦力矩,且轴承摩擦力矩在操纵机构摩擦力矩中起主导作用。

推力矢量发动机燃气舵系统设计与分析

对推力矢量发动机燃气舵进行总体设计,构建燃气舵控制系统的仿真模型,为实用的推力矢量控制装置提供了有价值的参考。首先在大量试验的基础上,对推力矢量燃气舵进行初步设计。通过对燃气舵系统的受力分析,找出弹体和燃气舵之间的相互作用关系。推出了弹体和燃气舵片之间力的转换关系、燃气舵片偏角和舵机转角之间的转换关系,进而推导出燃气舵系统的铰链力矩。其次,对燃气舵系统进行力矩分析和力学转换,确定舵机系统受到的负载。结果表明,所设计的燃气舵曲柄滑杆传动机构能够有效减小铰链力矩对舵机系统的负载。最后,构建燃气舵系统数学模型,利用MATLAB对其进行仿真并取得了较好的效果。最终实现燃气舵系统的PID精确控制,为燃气舵系统的设计和控制研究提供了依据。