Nonlinear observers design for multivariable ship motion control

Control Design of a Nonlinear Multivariable Process

– The paper presents an effective procedure for control design of multi input – multi output nonlinear processes. The procedure is based on an approximation of a nonlinear model of the process by a continuoustime external linear model in the form of the left polynomial matrix fraction. The parameters of the continuoustime external linear model are recursively estimated either by a direct method...

Optimal Control of Nonlinear Multivariable Systems

This paper concerns a study on the optimal control for nonlinear systems. An appropriate alternative in order to alleviate the nonlinearity of a system is the exact linearization approach. In this fashion, the nonlinear system has been linearized using input-output feedback linearization (IOFL). Then, by utilizing the well developed optimal control theory of linear systems, the compensated ...

Control Structure Analysis and Design for Nonlinear Multivariable Systems

A new approach to control structure analysis and design for nonlinear multivariable systems is proposed in this paper. By integrating the concept of gap metric, factorial design and multivariate projection methods, a systematic analysis of control structures, operating conditions and operating regime based control strategies can be established. The application to an extractive fermentation proc...

Ship Roll Motion Control

The technical feasibility of roll motion control devices has been amply demonstrated for over 100 years. Performance, however, can still fall short of expectations because of deficiencies in control system designs, which have proven to be far from trivial due to fundamental performance limitations. This tutorial paper presents an account of the development of various ship roll motion control sy...

Ship motion control pdf