To help along the analysis and design of nonlinear control systems the
NONLINCON package, an acronym for Nonlinear Control, was developed. T
his note addresses the usefulness of symbolic computation, and of the
NONLINCON package in particular, for the symbolic analysis and design
of nonlinear control systems. The symbolic computation program MAPLE i
s used as computing substratum. Textbook problems show that the NONLIN
CON package can be used successfully, A larger scale problem is too co
mplex, hen-ever, to be solved with the current versions of NONLINCON a
nd MAPLE. The conclusion is that symbolic computation is a viable appr
oach for textbook problems, but not yet for more complex ones.