This Paper shows the synthesis of Sliding Mode Controller using model predictive structure of the process. The Smith predictor architecture is combined with the Sliding mode control theory. Two different linear models, with deadtime, are simulated and the performance of the controller is evaluated.

It is known that both H 2 and H optimization problems for dead-time systems are solved by controllers having the so-called modified Smith predictor (dead-time compensator) structure. This note shows that this is also true for the L1 control problem. More precisely, it is demonstrated that the use of the modified Smith predictor enables one to reduce the standard L1 problem for systems with a si...

This paper proposes a new modified discrete Smith predictor control scheme for stable processes with dead time. The processes are assumed to be of stable first order with time delay, which are commonly used in process industry. The present scheme consists of two parts: predictive disturbance observer (PDOB) and Smith predictor structure. The PDOB scheme exhibits the property of DOB structure wh...

The design and implementation of Generalized Minimum Variance control laws for nonlinear multivariable systems that can include severe nonlinearities is considered. The quadratic cost index minimised involves dynamically weighted error and nonlinear control signal costing terms. The aim here is to show the controller obtained is simple to design and implement. The features of the control law ar...

A mixed sensitivity H∞ problem is solved for dead-time systems. It is shown that for a given bound on the H∞-norm there exist causal stabilizing controllers that achieve this bound if and only if a related finite-dimensional Riccati equation has a solution with a certain nonsingularity property. In the case of zero time-delay the Riccati equation is a standard Riccati equation and the nonsingul...

This note presents a frequency domain method to solve the standard control problem for processes with a single delay. For a given bound on the closed-loop norm, there exist proper stabilizing controllers that achieve this bound if and only if both the corresponding delay-free problem and an extended Nehari problem with a delay (or a one-block problem) are all solvable. The solvability of the ex...

A networked output feedback loop subject to packetized transmissions of the signal is considered. Based on small gain theorem, an easy-to-use stability criterion covering two important cases presented. In first case a packet numbering mechanism employed whereas in second neither nor synchronization between sender and receiver assumed. The analysis makes use acausal subsystems deduces optimal co...