Multiplicative fault estimation using sliding mode observer with application

Sliding mode observer (SMO) plays an important role in system states or faults estimation, where mostly additive faults are considered. Few papers consider multiplicative faults. The paper proposed an approach for multiplicative fault estimation based on SMO, where linear matrix inequality technique is used to calculate the observer gain. A wind turbine fault detection example shows the design procedure of proposed SMO and its usefulness.

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