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系统地分析和阐述了安装在特种车上的大型光学精密仪器减振问题的理论与方法,建立了10自由度“车辆—仪器”系统动力学模型,结合随机激励输入,采用正交计算设计优化法,对减振装置参数进行了动态最优设计;同时编制了频率特性计算、时域内瞬态振动响应计算机模拟等软件程序。在此基础上设计出减振装置,通过跑车试验,验证了分析模型,计算方法,优化结果及装置的减振性能。
The theory and method of vibration reduction for large optical precision instruments installed on special vehicles are systematically analyzed and elaborated. A 10-DOF vehicle-instrument system dynamic model is established. Combining random excitation input and orthogonal calculation Design and optimization method to dynamically optimize the parameters of the vibration damping device. At the same time, software programs such as frequency characteristic calculation and transient vibration response computer simulation in the time domain are compiled. On the basis of this, a vibration-damping device is designed and the test model of automobile is validated. The calculation method, optimization results and damping performance of the device are validated.