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相关概念视频

Feedback control systems01:26

Feedback control systems

305
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...
305
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

95
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...
95
Effects of feedback01:24

Effects of feedback

548
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...
548
Linear time-invariant Systems01:23

Linear time-invariant Systems

249
A system is linear if it displays the characteristics of homogeneity and additivity, together termed the superposition property. This principle is fundamental in all linear systems. Linear time-invariant (LTI) systems include systems with linear elements and constant parameters.
The input-output behavior of an LTI system can be fully defined by its response to an impulsive excitation at its input. Once this impulse response is known, the system's reaction to any other input can be...
249
Second Order systems II01:18

Second Order systems II

101
In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
101
Multimachine Stability01:25

Multimachine Stability

151
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
151

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相关实验视频

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Using Neuron Spiking Activity to Trigger Closed-Loop Stimuli in Neurophysiological Experiments
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对于具有随机发生的多次通信延迟的非线性网络系统,并行事件触发的动态输出反控制.

Jinyuan Zhang1, Yuechao Ma1

  • 1School of Science, Yanshan University, Qinhuangdao, Hebei, 066004, PR China.

ISA transactions
|May 24, 2024
PubMed
概括

本研究引入了使用TS模糊模型的网络控制系统 (NCS) 的新型并行事件触发 (PET) 控制. 在通信延迟和色通道的情况下,PET战略提高了效率和稳定性.

科学领域:

  • 控制系统工程 控制系统工程
  • 网络控制系统 (NCS) 是指网络控制系统.
  • 模糊逻辑系统 模糊逻辑系统

背景情况:

  • 网络控制系统 (NCS) 面临的挑战是带宽有限和不可预测的通信延迟.
  • 模糊的TS模型提供了一个灵活的框架来表示复杂的非线性系统.
  • 与时间触发的方法相比,事件触发的控制策略旨在减少网络负载.

研究的目的:

  • 为离散时间TS模糊NCS设计一种新的并行事件触发 (PET) 动态输出反控制器.
  • 通过先进的PET战略,提高网络资源利用率和传输效率.
  • 确保系统稳定性和性能在现实的通信障碍下.

主要方法:

  • 设计了一种新的PET动态输出反控制器,利用相对和绝对触发条件.
  • 随机多重通信延迟的建模和lth-order 米色衰变通道.
  • 用楼梯函数近似和利亚普诺夫稳定性开发足够的条件,以使会员函数依赖.

主要成果:

  • 拟议的PET控制器保证了NCS的指数平均平方稳定性 (EMSS).
  • 该系统实现了保证的H∞性能,表明对干扰的稳定性.
  • 控制器有效地处理无法测量的状态和系统内部动态.
关键词:
离散时间的TS模糊系统.成员资格 职能依赖 成员资格 职能依赖平行事件触发 (PET) 机制.随机多个通信延迟发生.

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结论:

  • 开发的PET动态输出反控制策略对于TS模糊NCS是有效的.
  • 该方法为在通信限制下运行的NCS提供了强大的和高效的解决方案.
  • 未来的工作将把这项研究扩展到TS模糊的马尔科夫跳跃NCS.