对于有数据包丢失和多个概率采样周期的网络控制系统的输出反合成:随机通信协议案例
IEEE transactions on cybernetics
|August 19, 2025
概括
本研究涉及网络控制系统 (NCS) 稳定性挑战,原因是通信问题. 一种新的方法增强了控制器设计,用于带有数据包丢失和可变采样周期的系统,提高了性能和稳定性.
科学领域:
- 控制工程 控制工程 控制工程
- 网络化系统 网络化系统
- 信号处理 信号处理
背景情况:
- 网络控制系统 (NCS) 面临性能下降和稳定性问题,原因是通信缺陷,如数据包丢失和可变的采样周期.
- 随机通信协议 (SCP) 用于通过限制传感器传输来管理网络带宽.
研究的目的:
- 在随机通信协议 (SCP) 下为NCS开发输出反合成方法.
- 应对包括双通道连续数据包丢失 (SPD) 和多重概率抽样周期 (MPSP) 在内的挑战.
主要方法:
- 衍生出一个离散时间增强模型,用于闭环NCS与动态输出反控制器.
- 纳入了同等的抽样期表示,用于分析非包丢失实时之间的数据.
- 通过两步方法建立了考虑SCP效应的一般分析模型,并使用线性矩阵不等式 (LMIs) 制定了控制器设计条件.
主要成果:
- 使用LMI开发了动态输出反控制器设计的条件.
- 控制器设计维度独立于SPD的上限和采样周期的数量,通过矩阵分解实现.
- 用一个说明性的例子证明了拟议方法的有效性.
结论:
- 拟议的方法为设计复杂通信约束的NCS中的输出反控制器提供了可靠的方法.
- 该技术比现有的处理数据包丢失和多重采样率的方法提供了更好的通用性和可扩展性.
相关概念视频
Propagation of Uncertainty from Systematic Error
883
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
Propagation of Uncertainty from Random Error
1.1K
An experiment often consists of more than a single step. In this case, measurements at each step give rise to uncertainty. Because the measurements occur in successive steps, the uncertainty in one step necessarily contributes to that in the subsequent step. As we perform statistical analysis on these types of experiments, we must learn to account for the propagation of uncertainty from one step to the next. The propagation of uncertainty depends on the type of arithmetic operation performed on...
1.1K
Feedback control systems
419
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...
419
Sampling Continuous Time Signal
348
In signal processing, a continuous-time signal can be sampled using an impulse-train sampling technique, followed by the zero-order hold method. Impulse-train sampling involves the use of a periodic impulse train, which consists of a series of delta functions spaced at regular intervals determined by the sampling period. When a continuous-time signal is multiplied by this impulse train, it generates impulses with amplitudes corresponding to the signal's values at the sampling points.
In the...
In the...
348
Effects of feedback
698
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...
698
Upsampling
309
Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
309


