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相关概念视频

Controller Configurations01:22

Controller Configurations

79
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...
79
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

77
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...
77
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

379
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
379
One-Degree-of-Freedom System01:24

One-Degree-of-Freedom System

444
In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
444
PD Controller: Design01:26

PD Controller: Design

159
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,...
159
Relative Motion Analysis - Acceleration01:10

Relative Motion Analysis - Acceleration

319
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
319

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对于具有规定的性能并行机器人移动平台的固定时间全球滑动模式控制.

Aojie Wang1, Guoqin Gao1, Xue Li1

  • 1School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China.

Sensors (Basel, Switzerland)
|March 17, 2025
PubMed
概括

本研究介绍了一种新的固定时间全球滑动模式控制,用于具有不同质量中心的并行机器人移动平台. 该方法增强了稳定性,并确保了尽管存在不确定性,快速,超越无的趋同.

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
  • 机械电子学是什么意思 机械电子学

背景情况:

  • 具有不同质量中心的并行机器人移动平台面临来自模型不确定性和外部干扰的挑战.
  • 现有的控制方法可能会受到长时间的融合时间或显著的超速冲击的影响.
  • 强大而高效的控制对于精确的移动平台运行至关重要.

研究的目的:

  • 开发一个固定时间的全球滑动模式控制 (GSMC) 战略,用于平行移动机器人平台,具有不同的质量中心.
  • 提高系统的全球稳定性和融合性能.
  • 为了最大限度地减少系统超速,并确保规定的性能.

主要方法:

  • 为平行机器人移动平台建立动态和动态模型,其质量中心可变.
  • 一个反向的外环控制器的设计,以产生参考速度.
  • 实现一个固定时间的全球滑动模式控制算法与内循环的规定的性能函数.
  • 使用利亚普诺夫函数进行理论稳定性分析.

主要成果:

  • 拟议的固定时间GSMC消除了滑动模式到达阶段,确保在固定时间内快速融合.
  • 规定的性能约束有效地减少了系统超速.
关键词:
固定时间控制器全球滑动模式 全球滑动模式规定的性能控制指令.轨迹跟踪 轨迹跟踪 轨迹跟踪

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  • 利亚普诺夫稳定性分析证实了理论上的稳定性和收性质.
  • 模拟实验验证了拟议的控制方法的有效性和优越性.
  • 结论:

    • 开发的固定时间全球滑动模式控制与规定的性能为平行机器人移动平台提供了强大的和高效的解决方案,具有不同的质量中心.
    • 与传统方法相比,这种控制策略显著提高了收速度,并减少了超标.
    • 该方法为提高不确定动态系统的性能和稳定性提供了可靠的框架.