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首页> 外文期刊>Mechatronics, IEEE/ASME Transactions on >An Observer-Based Neural Adaptive $PID^2$ Controller for Robot Manipulators Including Motor Dynamics With a Prescribed Performance
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An Observer-Based Neural Adaptive $PID^2$ Controller for Robot Manipulators Including Motor Dynamics With a Prescribed Performance

机译:基于观察者的神经自适应<内联公式> $ PID ^ 2 $ 控制器,用于机器人操纵器,包括具有规定性能的电机动态

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摘要

This article proposes a novel prescribed performance-based neural adaptive control scheme for robot manipulators including motor dynamics under model uncertainties without velocity, acceleration, and input current measurements. The prescribed performance function approach is used to transform a constrained tracking problem of the robot model including motor dynamics into an unconstrained third-order error model in Euler-Lagrange form which inherits all properties of the robot dynamics. Then, a projection-type neural adaptive PID2 controller (a PID controller with the second-order derivative) in conjunction with a velocity-acceleration observer is proposed. Lyapunov's direct method is used to prove that the tracking and state observation errors are semiglobally uniformly ultimately bounded and converge to a small ball around the origin with a prescribed overshoot/undershoot, convergence rate, and final tracking accuracy. Finally, simulation, experimental results on a SCARA robot and comparative studies verify that the proposed controller is effective for the joint position trajectory tracking of robot manipulators in the industrial automation with minimum measurement and hardware requirements.
机译:本文提出了一种用于机器人操纵器的新规定的基于性能的神经自适应控制方案,包括在没有速度,加速度和输入电流测量的模型不确定性下的电动机动力学。规定的性能函数方法用于将机器人模型的约束跟踪问题转换为euler-lagrange形式中的电机动力学中的无约束三阶错误模型,其继承机器人动态的所有属性。然后,提出了一种与速度加速观察者结合速度 - 加速观察者的投影型神经自适应PID2控制器(具有二阶导数的PID控制器。 Lyapunov的直接方法用于证明跟踪和状态观察误差是半球性均匀的最终界定的,并收敛到围绕原点的小球,具有规定的过冲/下冲,收敛速度和最终跟踪精度。最后,仿真,对斯卡拉机器人和比较研究的实验结果验证了所提出的控制器对于工业自动化中的机器人操纵器的联合位置轨迹跟踪,具有最小的测量和硬件要求。

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