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Feedback delays are inherent attributes of distributed control systems that usually cause unfavorable effect on the stability of the controlled process. Modelling of such systems is essential for traceable controller synthesis. In this paper we apply the TP Model Transformation to derive a polytopic representation of an LPV model where the time-delay is considered as parameter. The method is introduced...
In haptic and telemanipulation devices stability and transparency are contradicting requirements. Due to the network delay the control process may become unstable. In our research we consider the coupled impedance type control algorithms for force reflecting telemanipulation. There are several solutions in the control literature to handle constant time delay in feedback systems, but varying delay...
In teleoperation systems, operator performance is negatively affected by time-delayed visual feedback. Predictive display (PD) compensates for delays by providing synthesized visual feedback. While most existing PD methods rely on a priori models (e.g., from laser range finding or stereo vision), recent work on monocular SLAM and SFM makes it possible to acquire PD models in single camera applications...
This paper develops a general framework for infinitesimal perturbation analysis (IPA) for fluid queues, and applies it to a queue with flow control. Unlike previous works, we consider signal delays in the feedback channel. The performance measure of interest is the loss volume, and the variable parameters are the buffer size and the feedback gain. The IPA derivatives are characterized, and simulation...
In networked control systems (NCS) network-induced delays affect the performance of system and even cause instability. A discrete model of NCS was established in this paper, and a feedback control method based on forecast for State compensation was given in view of the model. The method was applied in a simulation model of inverted pendulum, and was confirmed to be effective .Finally, the paper points...
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