The use of DMC in industry is very extended. Traditionally, its formulation has been based on the Dynamic Matrix model, obtained from the step response of the system. This work shows an alternative formulation that is based on a transfer function model, and divides the DMC into two parts: controller and predictor. This allows the easy substitution of one for another. Thus, SPDMC is obtained by ...

This paper presents a non-linear control scheme to deal with dead-time (DT) processes where small rise times are required. The control scheme is based on the combination of two strategies appeared in the literature to deal with DT processes, the Filtered Smith Predictor (FSP), which is a Smith Predictor (SP) including a filter to improve the robustness, and the PI+CI, a PI with a partial reset ...

the problem discussed in this paper is the effect of latency time on the ogy chaos control methodology in multi chaotic systems. the smith predictor, rhythmic and memory strategies are embedded in the ogy chaos control method to encounter loop latency. a comparison study is provided and the advantages of the smith predictor approach are clearly evident from the closed loop responses. the comple...

The problem discussed in this paper is the effect of latency time on the OGY chaos control methodology in multi chaotic systems. The Smith predictor, rhythmic and memory strategies are embedded in the OGY chaos control method to encounter loop latency. A comparison study is provided and the advantages of the Smith predictor approach are clearly evident from the closed loop responses. The comple...

This paper presents a non-linear control scheme to deal with dead-time processes, specially for systems where fast closed-loop responses are required. The control scheme is based on the combination of two control strategies appeared in the literature to deal with dead-time processes, the Filtered Smith Predictor (FSP), which is a Smith Predictor (SP) including a filter to improve the robustness...

The article brings a brief revision of the two-degree-of-freedom (2-DoF) internal model control (IMC) and 2-DoF Smith-Predictor-based (SP) unstable systems. It shows that first important reason for distinguishing between these approaches is limitations action. However, it also reminds that, in addition to seemingly lucrative dynamics transients, proposed can conceal tricky behavior with structu...

A new modified Smith predictor structure is presented with its associated tuning rules.

In this paper, we present a geometric method for describing the effects of the delay induced uncertainty on the stability of a standard Smith Predictor control scheme. The method consists of deriving the stability crossing curves in the parameter space defined by the nominal delay, and delay uncertainty, respectively. More precisely, we start by computing the crossing set, which consists of all...

is small. For large delays, the Smith predictor is applied to solve the instability problem and the scheme is proved to be robust against a small difference between the assumed delay and the actual delay. The analysis shows that bustness against delays in the boundary measurement.