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相关概念视频

Feedback control systems01:26

Feedback control systems

441
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...
441
Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

130
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
130
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

185
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...
185
PD Controller: Design01:26

PD Controller: Design

359
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
359
Open and closed-loop control systems01:17

Open and closed-loop control systems

1.0K
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...
1.0K
PI Controller: Design01:24

PI Controller: Design

517
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
517

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相关实验视频

Updated: Sep 19, 2025

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
09:01

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

Published on: April 4, 2017

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非线性自触发MPC没有终端条件的轨迹跟踪跟踪.

Hai Zhao1, Hongjiu Yang1, Yuanqing Xia2

  • 1The Tianjin Key Laboratory of Intelligent Unmanned Swarm Technology and System, School of Electrical and Information Engineering, Tianjin University, Tianjin, 300072, China.

ISA transactions
|June 17, 2025
PubMed
概括

本研究介绍了非线性系统的实用模型预测控制 (MPC) 策略. 这种新的方法简化了参数,并使用自触发机制来减少轨迹跟踪的计算负载.

关键词:
离散时间系统.在MPC中,MPC是MPC.非线性系统是非线性系统.自动触发机制自动触发机制轨迹跟踪跟踪 轨道跟踪

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An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces
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An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces

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Operation of the Collaborative Composite Manufacturing CCM System
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Operation of the Collaborative Composite Manufacturing CCM System

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相关实验视频

Last Updated: Sep 19, 2025

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
09:01

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

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An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces
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科学领域:

  • 控制系统工程 控制系统工程
  • 机器人技术 机器人技术 机器人技术
  • 非线性系统动态 非线性系统动态

背景情况:

  • 轨迹跟踪对于自主系统至关重要.
  • 由于终端条件,标准模型预测控制 (MPC) 可能是计算密集的.
  • 非线性离散时间系统存在独特的控制挑战.

研究的目的:

  • 开发一种简化且计算效率高的MPC策略,用于在非线性离散时间系统中的轨迹跟踪.
  • 通过消除终端约束和处罚,提高MPC的可行性.
  • 引入一个自我触发的机制,以减少计算负担.

主要方法:

  • 提出了一个新的模型预测控制 (MPC) 策略,省略了终端惩罚条款和状态约束.
  • 实现了一个自动触发机制,利用时间瞬间之间的成本函数差异.
  • 引入了一个额外的补偿变量,以解决自动触发机制的冗余问题.
  • 为优化问题提供递归可行性的数学证明.

主要成果:

  • 由于要求的参数较少,建议的MPC战略显示出高可行性.
  • 自动触发机制有效地降低了计算负载.
  • 优化问题的递归可行性已被数学证明.
  • 在移动车辆平台上的模拟和实验结果验证了该战略的有效性.

结论:

  • 新的自触发MPC策略为非线性离散时间系统的轨迹跟踪提供了实用且计算效率高的解决方案.
  • 删除终端条件简化了控制设计,而不会影响性能.
  • 该方法通过在移动机器人上进行严格的模拟和现实世界的实验来验证.