神经适应指令过的不确定的柔性关节操纵器的后退控制,输入通过输出和
Changzhong Pan1,2, Hao Huang3,4, Chaoyang Chen3,4
1Sanya Institute of Hunan University of Science and Technology, Sanya, 572024, China. pancz@hnust.edu.cn.
Scientific reports
|May 18, 2025
概括
本研究引入了灵活关节操纵器 (FJM) 的新控制方法,该方法使用自适应神经网络和命令过来克服输入和和不确定性,从而改善轨迹跟踪.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 控制系统工程 控制系统工程
- 人工智能的人工智能
背景情况:
- 灵活关节操纵器 (FJM) 由于固有的不确定性和输入和而带来控制挑战.
- 现有的输出反控制方法难以同时解决系统不确定性和输入和.
研究的目的:
- 开发一种新的神经适应性指令过输出反后退控制方案,用于FJM.
- 在不确定性,输入和和有限状态反下处理精确的轨迹跟踪.
主要方法:
- 利用平滑的过度函数和平均值定理来管理输入和.
- 开发了一个基于神经网络的自适应辐射基函数 (RBF) 状态观察器,用于状态估计.
- 实现了二级命令过后退框架,并提供错误补偿,以管理复杂性和过错误.
主要成果:
- 拟议的控制器有效地减轻了输入和,并估计了无法测量的状态.
- 实现了所有闭环信号的统一终极边界性,通过利亚普诺夫稳定性分析进行验证.
- 与模拟中现有的退步方法相比,证明了优越的瞬态和稳定状态跟踪精度.
结论:
- 这种新的神经适应控制方案成功地解决了FJM先前方法的局限性.
- 该方法不需要精确的操纵器模型,并确保强大的稳定性.
- 在复杂的操作条件下为柔性关节操纵器提供增强的轨迹跟踪性能.
相关概念视频
Control Systems
991
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
At the heart...
991
Feedback control systems
264
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
264
Controller Configurations
80
Controller configurations are crucial in a car's cruise control system because they manage speed over time to maintain a consistent pace regardless of road conditions, thereby meeting design goals. In traditional control systems, fixed-configuration design involves predetermined controller placement. System performance modifications are known as compensation.
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
80
Time-Domain Interpretation of PD Control
78
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
78
Open and closed-loop control systems
597
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
597
Effects of feedback
497
Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
497


