December 2002
Intermediate to advanced
800 pages
18h 7m
English
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14.2. Zeros and Performance Limitations
Recall that RHP zeros severely limit the performance of SISO processes. For example, a model inverse can not be implemented as the controller, because this would cause the controller to be unstable. A similar problem exists for multivariable processes; RHP transmission zeros limit MIMO performance.
SISO Zeros
For a SISO process transfer function with the form
Equation 14.1
the zeros are the roots of the numerator polynomial, N(s). The inverse of the process transfer function is
Equation 14.2
That is, the ...
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