自动剥锌机阴极板移载机器人作业轨迹跟踪控制

    Trajectory tracking control for the cathode plate transfer robot of an automatic zinc-stripping machine

    • 摘要: 自动剥锌机阴极板移载机器人的应用,可有效降低锌冶炼企业工人的劳动强度,提升企业的自动化、智能化水平。因作业空间有限,为避免阴极板运输偏差导致卡堵或放不到位等问题,有必要对阴极板移载机器人作业轨迹的精准跟踪展开研究。本文以自动剥锌机阴极板移载机器人为研究对象,设计模型预测控制策略和滑模控制策略,旨在提升阴极板移载作业效果及作业效率。研究结果表明:在预设轨迹下,两种控制器均表现出良好控制性能,显著跟踪误差主要集中在启动阶段及转向阶段,该阶段加速度变化剧烈,负载惯性较大,受限于滑模控制的固有特性,跟踪响应有所下降;相比之下,得益于模型预测控制的原理优势,系统整体跟踪性能得到进一步改善。该研究为移载机器人作业控制方面提供理论参考与工程价值。

       

      Abstract: The application of a cathode plate transfer robot on the automatic zinc-stripping machine can effectively reduce the physical strain on workers in zinc smelting enterprises and enhance the level of automation and intelligence within the enterprise. Due to limited operational space, it is necessary to conduct research into the precise tracking of the cathode plate transfer robot’s operational trajectory in order to avoid issues such as jamming or incorrect positioning caused by deviations during cathode plate transport. This paper takes the cathode plate transfer robot of the automatic zinc-stripping machine as its research subject, designing model predictive control and sliding mode control strategies with the aim of improving the performance and efficiency of cathode plate transfer operations. The study indicates that, under the preset trajectory, both controllers demonstrate good control performance. Significant tracking errors are primarily concentrated during the start-up and turning phases, where acceleration changes abruptly and the load inertia is substantial. Due to the inherent characteristics of sliding mode control, the tracking response deteriorates somewhat during these phases. In contrast, thanks to the theoretical advantages of model predictive control, the overall tracking performance of the system is further improved. This study provides theoretical references and engineering value for the operational control of transfer robots.

       

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