In this paper, adaptive feedback passivation is studied for a class of non-linear systems. Passivity is the property stating that any storage energy in a system is not higher than energy supplied to it from external sources. An appropriate updated estimate law is obtained so that the new transformed system is passive. In fact the system is passive via feedback if the unknown parameters are replaced with suitable estimates. Sliding-mode control is designed so that the states track the desired values. The passivation of a continuously stirred tank reactor model is considered as an application.
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