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mode state estimator. For example, a bound- u = −Us(e)/|s(e)| = −Usign(s(e)), where e is the control error and s is a function of e, may have the form u =
−Usign(s(e)) if |s(e)| > ν −Us(e)/ν if |s(e)| ≤ ν, where ν > 0 is called the boundary layer width. boundary layer controller See boundary layer observer See boundary layer state estimator a con- tinuous version of a sliding mode type state boundary scan a technique for applying scan design concepts to control/observe val- boundary scan interface a serial clocked interface used to shift in test pattern or test boundary scan path a technique that uses a standard serial test interface to assure easy boundary scan test a technique for applying scan design concepts to con- boundary value problem a mathemat- ical problem in which the unknown is a so- boundary values of 2-D general model x i,j be a solution (semistate vector) to the 2-D generalized model x i+1,j+1 = A 0 x i,j + A 1 x i+1,j + A 2 x i,j+1 + B 0 u i,j + B 1 u i+1,j + B 2 u i,j+1 i, j ∈ Z + (the set of nonnegative integers) where u i,j ∈ R m is the input and A k , B k (k = 0 , 1, 2) are real matrices of the model. The vectors x i,j ∈ R n whose indices lie on the boundary of the rectangle [0 , N 1 ] × [0, N 2 ], i.e., x i,0 , x i,N 2 for 1 ≤ i ≤ N 1 and x 0 ,j , x N 1 ,j for 0 ≤ j ≤ N 2 , are called boundary values of the solution x i,j to the 2- D general model. The boundary values may boundary-element method (BEM) a nu- merical method (integral equation technique) bounded control See bounded distance decoding decoding of an imperfect t-error correcting forward error correction block code in which the corrected t or fewer errors, even though it would be possi- t errors. bounded function a function x ∈ X e is said to be bounded if it belongs also to the c 2000 by CRC Press LLC |