| 摘要: |
| 摆动喷管具有大惯量和强非线性特征，存在与惯性器件耦合的风险。建立了从指令输入到惯性器件响应输出的控制回路开环传递特性模型，用有限元方法模拟了摆动喷管非线性特征，发现了摆动喷管与惯性器件的超谐波共振耦合效应，同时讨论了几种改进措施的有效性和可行性，发现对作动器反馈信号进行幅值调制来降低耦合效应效果明显且易于应用实现。 |
| 关键词: 摆动喷管 非线性 惯性器件 超谐波 仿真 |
| DOI： |
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| 基金项目: |
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| Simulation Research on the Superharmonic Resonance Coupling Between the Swing Nozzle and the Inertial Device |
| FU Wei,SUN Ying,WANG Enze,DUAN Jiatong,DAI Tingting |
| (Beijing Institute of Structure and Environment Engineering, Beijing 100076, China;Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China) |
| Abstract: |
| The swing nozzle has a large inertia and strong nonlinear characteristics, and there is a risk of coupling with inertial devices. In this paper, a control loop open-loop transfer characteristic model from command input to inertial device response output is established. The finite element method is used to simulate the nonlinear characteristics of the swing nozzle, and the superharmonic resonance coupling effect between the swing nozzle and the inertial device is discovered. Meanwhile, the effectiveness and feasibility of several improvement measures are discussed, and it is found that modulating the amplitude of the actuator feedback signal to reduce the coupling effect is effective and is easy to implement. |
| Key words: Swing nozzle Nonlinearity Inertial device Superharmonic Simulation |