面向高精度里程估计的2轮驱动移动机器人运动控制优化方法OA
Motion Control Optimization for High-Precision Odometry in Two-Wheeled Drive Mobile Robot
针对2 轮驱动移动机器人运动过程中存在的里程计漂移大、运动响应不平滑、系统误差累积及惯性测量单元(Inertial Measurement Unit,IMU)零偏不稳定等问题,课题组提出了一套综合优化策略.首先,采用运动状态感知的自适应扩展卡尔曼滤波(Adaptive Extended Kalman Filter,AEKF)算法,根据编码器与 IMU 残差动态调整观测权重,提升状态估计鲁棒性;其次,提出面向伺服动态特性的 S 型加减速与前馈补偿策略,结合电流约束生成平滑运动指令;然后,构建基于往返任务一致性的在线误差补偿机制,实现轮距与轮径偏差的自校正;接着,开发多源静止判据融合的 IMU 零偏校正方法,显著提升航向角长期稳定性;最后,通过实验对综合优化策略进行了测试.测试结果表明:该方法显著提升了系统性能,大大提高了里程计精度和稳定性,验证了方法的工程实用性与鲁棒性.
To address issues such as significant odometry drift,non-smooth motion response,accumulated system errors,and unstable Inertial Measurement Unit(IMU)bias in two-wheeled drive mobile robots,the research team proposed a comprehensive optimization strategy.A motion-state-aware Adaptive Extended Kalman Filter(AEKF)was designed,dynamically adjusting observation weights based on residuals between encoders and IMU to enhance state estimation robustness;An S-curve acceleration and deceleration profile with feedforward compensation,tailored to servo dynamic characteristics and constrained by current limits,was developed to generate smooth motion commands;An online error compensation mechanism based on round-trip task consistency was constructed to self-calibrate wheelbase and wheel diameter deviations;A multi-source stationary detection fusion method was developed for IMU bias correction,significantly improving long-term heading stability.Experimental results demonstrate that the proposed strategy substantially enhances odometry accuracy and system stability,validating its engineering practicality and robustness.
陈苏芃;张秋菊;郑坤明
江南大学 智能制造学院,江苏 无锡 214122||江南大学 江苏省食品先进制造装备与技术重点实验室,江苏 无锡 214122江南大学 智能制造学院,江苏 无锡 214122||江南大学 江苏省食品先进制造装备与技术重点实验室,江苏 无锡 214122江南大学 智能制造学院,江苏 无锡 214122||江南大学 江苏省食品先进制造装备与技术重点实验室,江苏 无锡 214122
信息技术与安全科学
移动机器人2 轮驱动自适应扩展卡尔曼滤波S 型加减速在线误差补偿惯性单元零偏校正
mobile robottwo-wheeled driveAEKF(Adaptive Extended Kalman Filter)S-curve acceleration and decelerationonline error compensationIMU(Inertial Measurement Unit)bias correction
《轻工机械》 2026 (2)
50-57,66,9
国家自然科学基金青年科学基金项目(52205015).
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