| 祁旗,张彬彬,范锦彪,姜生元.星壤力学感知模组的动态特性补偿技术[J].电子测量与仪器学报,2026,40(3):291-300 |
| 星壤力学感知模组的动态特性补偿技术 |
| Dynamic performance compensation method for lunar soilmechanics sensing module |
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| DOI： |
| 中文关键词: 共面激励法 阶次自适应辨识 NLS-Wolfe线搜索 动态补偿 力学感知模组 |
| 英文关键词:co-planar excitation method order-adaptive identification NLS-Wolfe line search dynamic compensation Mechanical Sensing Module |
| 基金项目: |
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| Author | Institution |
| Qi Qi | State Key Laboratory of Extreme Environment Optoelectronic Dynamic Measurement Technology and Instrument, North
University of China, Taiyuan 030051, China |
| Zhang Binbin | Beijing Satellite Manufacturing Co., Ltd.,Beijing 100190, China |
| Fan Jinbiao | State Key Laboratory of Extreme Environment Optoelectronic Dynamic Measurement Technology and Instrument, North
University of China, Taiyuan 030051, China |
| Jiang Shengyuan | School of Mechanical Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| 摘要点击次数: 317 |
| 全文下载次数: 177 |
| 中文摘要: |
| 在星壤侵彻式探测过程中，探测器工作在高过载的环境条件下，力学感知模组通常位于探测器的最前端，所处的应力环境最为恶劣。为避免高过载对力学感知模组的损坏，需对其进行灌封处理。然而灌封材料在提高模组抗冲击性能的同时，带来了幅频响应的非线性。针对这一问题，提出了“共面激励”冲击校准方法和“阶次自适应辨识+NLS-Wolfe线搜索”的数据处理方法。首先，基于对称原理，将标准传感器与被校模组安装在冲击放大器可动台的对称位置，在共面激励脉冲的作用下，实现对力学感知模组的动态校准；在校准数据处理时，通过阶次自适应辨识确定传递函数的阶次，采用NLS-Wolfe线搜索辨识模组的传递函数参数；基于动态补偿原理，构建逆传递函数模型，求出力学感知模组的补偿函数。结果表明，经补偿后的力学感知模组幅值误差±5%的工作频带被有效展宽至12.356 kHz，主脉冲的相关性达到97.69%。 |
| 英文摘要: |
| During the star-soil penetrative exploration process, the detector operates under high-overload conditions. The mechanical sensing module, typically located at the foremost part of the detector, experiences the most severe stress environment. To prevent damage from high overloads, the module requires potting. However, while potting materials enhance the module’s impact resistance, they introduce nonlinearities in the amplitude-frequency response. This paper addresses this issue by proposing the ‘co-planar excitation’ impact calibration method and the data processing method of ‘order-adaptive identification NLS-Wolfe line search’. First, leveraging the principle of symmetry, the reference sensor and the module under calibration are mounted symmetrically on the movable table of a shock amplifier. Dynamic calibration of the mechanical sensing module is achieved under co-planar excitation pulses. During the calibration data processing, the order of the transfer function is determined through order-adaptive identification, and the transfer function parameters are identified using the NLS-Wolfe line search identification module. Results show that after compensation, the operating frequency bandwidth with amplitude error within ±5% is effectively extended to 12.356 kHz, and the correlation of the main pulse reaches 97.69%. |
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