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2003 European Control Conference (ECC)
In the context of discrete-time adaptive control of plants subject to parameter variations, direct adaptive control (despite various attempts: model reference control, minimum variance self-tuning) cannot effectively be used in practice because the discrete-time plant models feature generically unstable zeros. There is however another extremely important area for application of adaptive control: rejection of unknown disturbances. The paper shows that in this case it is possible to developdoi:10.23919/ecc.2003.7084966 fatcat:7mejpgjyozb6jkwwub2wejjhge