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相关概念视频

BIBO stability of continuous and discrete -time systems01:24

BIBO stability of continuous and discrete -time systems

512
System stability is a fundamental concept in signal processing, often assessed using convolution. For a system to be considered bounded-input bounded-output (BIBO) stable, any bounded input signal must produce a bounded output signal. A bounded input signal is one where the modulus does not exceed a certain constant at any point in time.
To determine the BIBO stability, the convolution integral is utilized when a bounded continuous-time input is applied to a Linear Time-Invariant (LTI) system....
512
Propagation of Uncertainty from Systematic Error01:10

Propagation of Uncertainty from Systematic Error

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The atomic mass of an element varies due to the relative ratio of its isotopes. A sample's relative proportion of oxygen isotopes influences its average atomic mass. For instance, if we were to measure the atomic mass of oxygen from a sample, the mass would be a weighted average of the isotopic masses of oxygen in that sample. Since a single sample is not likely to perfectly reflect the true atomic mass of oxygen for all the molecules of oxygen on Earth, the mass we obtain from this...
883
Multimachine Stability01:25

Multimachine Stability

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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:
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Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

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Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

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Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence...
149
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

178
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...
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相关实验视频

Updated: Sep 10, 2025

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
06:04

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通过双终端事件触发机制改善基于观察者的扩展状态共识控制

Yang Yang, Xinghai Yu, Zhiyuan Li

    IEEE transactions on cybernetics
    |August 21, 2025
    PubMed
    概括

    一个新的共识控制策略使用基于时间变化的事件触发的扩展状态观察器 (ATVG-ETESO) 和双终端事件触发机制 (DTETM) 来有效地管理不确定的非线性随机多代理系统.

    科学领域:

    • 控制理论
    • 非线性系统
    • 随机过程

    背景情况:

    • 多代理系统在各个领域至关重要, 但面临不确定性和随机干扰的挑战.
    • 在这些系统中达成共识需要强有力的控制策略,尽量减少通信开销.

    研究的目的:

    • 为不确定的非线性随机多代理系统提出新的共识控制策略.
    • 开发一个基于时间变化的事件触发的扩展状态观察器 (ATVG-ETESO) 以提高状态估计.
    • 引入双终端事件触发机制 (DTETM) 以减少通信负担.

    主要方法:

    • 该研究使用ATVG-ETESO来估计内部不确定性和外部随机干扰.
    • 在DTETM中使用适应值来最大限度地降低输入和输出通道的通信负载.
    • 进行理论分析以确保有界估计和共识错误.

    主要成果:

    • ATVG-ETESO有效地估计了系统的不确定性和干扰.
    • 可调节的时间变化增益可以防止峰值,并加快估计错误的趋同.
    • 该DTETM显著降低了通信需求.

    结论:

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  • 建议的共识控制策略对于不确定的非线性随机多代理系统是有效的.
  • 开发的ATVG-ETESO和DTETM提供了更好的性能和效率.
  • 模拟示例验证了理论发现和实际可用性.