Finding a fractional model from frequency and time responses |
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| Institution: | 1. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China;2. School of Information Science and Engineering, Central South University, Changsha, 410083, China;3. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
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| Abstract: | An existing method for identifying an integer model from frequency data, developed to be used when synthesising second-generation Crone controllers, is adapted to identify fractional order plants. The modification only allows models with poles but no zeros or zeros but no poles. Two application examples are given, one of them showing how the method can also be used when a time response, rather than a frequency response, is available. |
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