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The article resolves the problem of examining the possibilities for analytically synthesized regulators use to control a standard production facility with a time delay subjected to random perturbations. We synthesized various kinds of astatic system polynomial controllers for the automatic production facility control. During synthesis, the delay element is represented by the 3rd and the 1st order...
Standard analysis and synthesis techniques for digital control systems assume that the total time-delay in the feedback loop is negligible or precisely known. This might not be the case in some applications. Such systems are quite common in industry, especially due to strong trends towards networking. Under certain circumstances the network-induced delays can be considered constant, and yet it might...
The simple repetitive control system proposed by Yamada et al. is a type of servomechanism for the periodic reference input. That is, the simple repetitive control system follows the periodic reference input with small steady state error, even if a periodic disturbance or uncertainty exists in the plant. In addition, simple repetitive control systems make transfer functions from the periodic reference...
A multi-period repetitive control system is a type of servomechanism for a periodic reference input. Even if a plant does not include time-delay, the transfer function from the periodic reference input to the output and that from the disturbance to the output of the multi-period repetitive control system generally have an infinite number of poles. The purpose of this paper is to propose the concept...
In this paper, model output following control based on command generator tracker is designed and applied to networked aluminum plate thermal process. One of the most important problems on networked system is the time delay problem. An explorative technique is that time delay is approximated as high order rational transfer functions. Therefore, the approximated high order system must be analyzed. Model...
The multi-period repetitive control system is a type of servomechanism for periodic reference input. Even if the plant does not include time-delay, the transfer function from the reference input to the output and that from the disturbance to the output of the multi-period repetitive control system generally have an infinite number of poles. In order to specify the input-output characteristic and the...
This paper clarifies the mechanism of weakness of Smith predictor control about robust stability to the delay mismatch. The approximate Smith predictor is introduced to remove the cause. The sufficient condition for robust stability of the approximate Smith predictor control is proved. It is shown that the stability area becomes wider in comparison with the original Smith predictor.
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