一种基于认知负荷的自适应导纳控制方法及系统

By constructing a multidimensional feature tensor and a hybrid neural network to evaluate the cognitive load index, generating high-frequency smooth control commands, and combining a virtual energy pool and safety constraints, the problems of signal distortion and mechanical shock in existing admittance control are solved, thus achieving stability and safety of the human-machine collaborative system.

CN122194693BActive Publication Date: 2026-07-17ANHUI UNIV OF SCI & TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI UNIV OF SCI & TECH
Filing Date
2026-05-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing variable parameter admittance control methods suffer from information loss and phase distortion when processing operator physiological signals, leading to oscillations in cognitive load assessment results. They also suffer from mechanical shock and failure of safety assurance mechanisms.

Method used

By constructing a multidimensional feature tensor, a hybrid neural network model is used to evaluate the cognitive load index. Nonlinear smooth mapping and high-order spline interpolation are used to generate high-frequency smooth control commands. Combined with a virtual energy pool and safety constraint strategies, the system stability and security are ensured.

Benefits of technology

It achieves stable compliance and physical collision safety of human-machine collaborative system under complex working conditions, avoids mechanical shock and safety protection failure, and improves the accuracy of cognitive load assessment and high-frequency stability of system.

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Abstract

本发明公开了一种基于认知负荷的自适应导纳控制方法及系统,涉及自适应导纳控制领域,该方法包括:获取操作员的多模态生理信号并构建多维特征张量;通过混合神经网络模型解算得到表征操作员心理状态的认知负荷指数;通过非线性平滑映射策略计算期望虚拟阻尼参数,并对期望虚拟阻尼参数进行基于最小加加速度准则的高阶样条插值,生成高频平滑控制指令;更新底层伺服控制回路中的实际虚拟阻尼参数,并构建虚拟能量池及进行状态变量更新;基于控制障碍函数与预设的动态物理碰撞能量上限构建安全约束,通过安全约束调整底层伺服控制回路中的实际虚拟阻尼参数。其实现了人机协作系统在复杂工况下的稳定顺应性与物理碰撞安全性。
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