Stability analysis of a two-channel feedback networked control system
Stability analysis of a two-channel feedback networked control system
复制标题
双通道反馈网络控制系统的稳定性分析
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
N. Chopra
中科院分区：
文献类型：
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作者：
Nirupam Gupta;N. Chopra
在本文中，我们提出了一种对可控线性时不变设备的网络控制的新型稳定性分析，该控制由非共址控制器通过现有无线局域网（WLAN）的无线通道与设备的执行器和传感器进行通信。我们考虑连接控制器与执行器的无损前向通信通道和连接传感器与控制器的有损反馈通道，其中通过这两个通道传输的数据会遭受显着变化的通道访问延迟。提出了使用参数相关李亚普诺夫函数和微扰定理的充分条件，通过将网络控制系统（NCS）视为具有可变采样间隔的线性离散时间系统的微扰来保证网络控制系统（NCS）的渐近稳定性。我们的网络控制综合结果的有效性通过旋转倒立摆的数值模拟得到了证明。
In this paper we propose a novel stabilization analysis of networked control of a controllable linear time invariant plant by a non co-located controller communicating with the actuator and the sensors of the plant via wireless channels of an existing wireless LAN (WLAN). We consider a lossless forward communication channel connecting the controller with the actuator and a lossy feedback channel connecting the sensors with the controller, where data transfer through both these channels suffer from significantly variable channel access delays. Sufficient conditions, using parameter dependent Lyapunov functions and perturbation theorem, are proposed for guaranteeing asymptotic stability of the networked control system (NCS) by treating it as a perturbation of a linear discrete-time system with variable sampling intervals. The efficacy of our results for network control synthesis is demonstrated using numerical simulations of a rotary inverted pendulum.