基于NDE-FLNN与零极点配置法的六维加速度传感器动态性能补偿
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1.北京林业大学工学院北京100083;2.北京航空航天大学北航学院北京100191

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TP212;TN609

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国家自然科学基金青年科学基金(52205043)项目资助


Dynamic performance compensation of six dimensional acceleration sensor based on NDE-FLNN with zero-pole configuration method
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1.School of Technology, Beijing Forestry University, Beijing 100083, China; 2.School of Beihang, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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    摘要:

    六维加速度传感器可广泛应用于类人机器人领域的动态全息检测,从而保障机器人运动柔顺性与稳定性。现有六维加速度传感器存在响应速度慢、响应范围窄等动态特性差的问题,限制了传感器对测量载体实时动态位姿信息的敏锐、宽范围响应。针对这一问题,开展六维加速度传感器时频域动态性能补偿研究。利用差分方程建立传感器的动态模型,提出一种基于NDE-FLNN的高精度动态模型参数辨识算法,并进一步推导动态补偿模型补偿传感器的响应速度,提升传感器的时域动态性能。之后,基于零极点配置法设计传感器各通道动态补偿器,消除原极点并引入新极点,拓展传感器响应范围,改善传感器频域动态性能。实验结果表明,相比于DE-FLNN算法,改进后的NDE-FLNN算法能够更高精度地辨识传感器动态模型参数,传感器补偿后各分量的调节时间减少至原先一半左右,均在150 ms以内,工作带宽由22 Hz拓展至84 Hz,传感器时频域动态性能得到显著提升。

    Abstract:

    Six dimensional acceleration sensor can be widely used for dynamic holographic detection in the field of humanoid robotics, so as to guarantee the flexibility and stability of robot motion. The existing six dimensional acceleration sensor have the problems of slow response speed, narrow response range and other poor dynamic characteristics, which limit the sensor’s sharp and wide-range response to the realtime dynamic position information of the measurement carrier. To address this problem, a study on the compensation of the dynamic performance of the six dimensional acceleration sensor in the time-frequency domain is carried out. The dynamic model of the sensor is established using differential equations, a high-precision dynamic model parameter identification algorithm based on NDE-FLNN is proposed, and the dynamic compensation model is further derived to compensate for the response speed of the sensor and to enhance the dynamic performance of the sensor in the time domain. After that, the dynamic compensator of each channel of the sensor is designed based on the zero-polarity configuration method, which eliminates the original poles and introduces new poles to expand the response range of the sensor and improve the dynamic performance of the sensor in the frequency domain. The experimental results show that compared with the DE-FLNN algorithm, the improved NDE-FLNN algorithm is able to identify the dynamic model parameters of the sensor with higher accuracy, and the adjustment time of each component of the sensor compensation is reduced to about half of the original one, which is within 150 ms, and the operating bandwidth is expanded from 22 Hz to 84 Hz, so the dynamic performance of the sensor in the time-frequency domain has been significantly improved.

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郝喆,于春战,张佳林,孙治博.基于NDE-FLNN与零极点配置法的六维加速度传感器动态性能补偿[J].电子测量与仪器学报,2024,38(10):109-117

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  • 在线发布日期: 2024-12-16
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