Computer-aided control engineering (CACE) tools have a great influence on the effectiveness and success of control design procedures. However, more and more functionally similar CACE tools mean that control engineers face a dilemma as to which ones are the most appropriate. Our experience in the development of CACE tools, as well as in the use of different CACE tools in applications and education, can help to resolve such a dilemma. As a background to this article, four application problems solved by the aid of CAD tools are described. A user-oriented classification of conventional CACE tools is then given and, to conclude, a view on the selection of appropriate CACE tools is presented.
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