一种高效的六维力传感器校准方法

By combining sparse sampling and an autoencoder model, the problems of nonlinear error and large sample size in the calibration of six-dimensional force sensors are solved, achieving efficient and accurate calibration of six-dimensional force sensors and improving production efficiency and calibration accuracy.

CN122409058APending Publication Date: 2026-07-17
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Filing Date
2026-06-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing six-dimensional force sensor calibration methods cannot compensate for nonlinear errors, resulting in low measurement accuracy at the range boundary or under complex force conditions. Furthermore, existing nonlinear calibration methods require a large number of samples and long acquisition times, leading to low production efficiency and model overfitting problems.

Method used

A sparse sampling strategy is adopted to obtain initial samples. Combined with an autoencoder model and error-driven active sample selection, virtual samples are generated and incrementally acquired. The autoencoder is trained through iterative optimization to achieve efficient calibration.

Benefits of technology

It effectively reduces the amount of physical sample collection, shortens the calibration cycle, improves production efficiency, achieves high-precision calibration across the entire range, avoids overfitting, and ensures good generalization ability.

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Abstract

本发明公开了一种高效的六维力传感器校准方法,属于传感器校准技术领域;该方法首先采用稀疏采样策略采集少量初始物理样本,训练包含编码器和解码器的自编码器模型;然后生成海量虚拟样本探索整个六维力矩空间,基于重构误差主动筛选出模型拟合薄弱区域的样本;再对筛选出的样本进行增量物理采集并重训练模型,迭代优化直至精度达标;最终将训练好的解码器作为校准模型;本发明打破了非线性校准必须采集全空间海量样本的技术偏见,物理样本采集量有效减少,校准周期有效缩短,同时保持与海量样本训练模型相当的校准精度,解决了现有技术中精度与效率不可兼得的技术难题。
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