By Hong Wang BSc, MEng, PhD (auth.)

Over the previous a long time, even supposing stochastic method keep watch over has been studied intensively in the box of keep watch over engineering, the entire modelling and keep watch over innovations constructed thus far have targeting the functionality of 1 or output homes of the method, corresponding to minimum-variance regulate or mean-value regulate. the final assumption utilized in the formula of modelling and keep watch over innovations is that the distribution of the random signs concerned is Gaussian. during this publication, a collection of latest ways for the keep watch over of the output chance density functionality of stochastic dynamic structures (those subjected to any bounded random inputs), has been constructed. during this context, the aim of regulate approach layout turns into the choice of a keep an eye on sign that makes the form of the process output's p.d.f. as shut as attainable to a given distribution. The publication includes fabric at the matters of:

• keep watch over of single-input single-output and multiple-input multiple-output stochastic systems.

• sturdy adaptive keep an eye on of stochastic distributions.

• version reference adaptive control.

• keep watch over of nonlinear dynamic stochastic systems.

• tracking of bounded stochastic distributions.

• regulate set of rules design.

• Singular stochastic systems.


A new illustration of dynamic stochastic structures is produced through the use of B-spline capabilities to explain the output p.d.f.

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Additional info for Bounded Dynamic Stochastic Systems: Modelling and Control

Example text

1,2" ... 22) to represent the system. 7) is assumed for the stochastic system, there is no need to perform such a realization. To summarise, the following algorithm can be obtained. 5) and {Yk,i}, (i fk(Y); = 1,2, ... , N) to formulate iii) Select an arbitrary set of data Y/s = {y;} for i = 1,2, ... 17) with respect to i to calculate the B(M) as the estimate of B at sample time k; v) Increase k by 1 and go back to Step i). 15). Therefore the data set Y/s has a totally different meaning in comparison to {Yk,;}.

10) it can be seen that Wk depends on Uk-1 = {Uk-1, Uk-2, .... 15) is a row vector defined on y E [a, b]. In addition, it is important to note that even the variables U and W take their discrete values, y is still a continuous variable and function r(y, Uk-d is continuous with respect to y. 8) needs to be satisfied, only n - 1 variables in vector Wk is independent. 10) should be reduced to n - 1 in order to represent the stochastic system. 16) bTVk) with (b 1 , b2 , ••• , bn- 1 ) E R n- 1 bi = lb Bi(y)dy (w1(k), w2(k), ...

Each input axis can also have different numbers of knots placed in different ways. The knot vector contains r interior knots and k exterior knots. 1) where ymin and ymax are the minimum and maximum values of the input for that axis. 3) These knots are used in the generation of basis functions of width, k, which are close to the ends of the input space. The modelling performance of a Bspline network depends on the orders of the univariate B-splines. The order of a univariate B-spline determines the shape of the B-spline and the width of its support.

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