Qin-ruo Wang

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Ship Dynamic Positioning system's Thruster Allocation is a nonlinear programming problem with nonlinear equality and inequality. In practice, thrusters will be unbalancing worn with allocated unbalancing thruster forces. And when one thruster failures, dynamic positioning capability is hard to be recovered under allocated unbalancing thruster forces. In(More)
The optimal control algorithm of first-order time-delay plant is used based. The observer is applied to the first-order plant with Time-Delay in feedback loop. The analysis of the robust stability is given. The conditions for robust control are given. The robust control upper limit and parameters are explored. The simulation results show that time-delay(More)
In this paper, Simulation of a class of ˆ Ito system with distributed parameter is discussed. Difference schemes for the numerical computation of ˆ Ito system are obtained. The precision of the difference scheme and the efficiency of the difference scheme in simulation of ˆ Ito system with distributed parameter are analyzed. Examples are given to illustrate(More)
In this paper, controller on dynamic positioning of nonlinear offshore platform under stochastic wave is designed based on rolling horizon optimization. In order to improve the efficiency of searching for optimum controller sequence, controller structure based on the output of proportional-integral-differential is brought out. The method above is of(More)
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