Multiple fault condition recognition of gearbox with sequential hypothesis test
A novel method for the fault condition recognition based on sequential hypothesis test is proposed. The algorithm about the binary SPRT probability ratio test for the recognition of the testing signal is developed. The procedure about the multi-condition recognition of gearbox is proposed with the three-level binary SPRT probability ratio test. The testing signals are applied to test the proposed algorithm and framework of the multi-condition recognition of the gearbox. The criteria for the recognition of gearbox condition are obtained.
fault condition recognition sequential hypothesis testing sequential probability ratio test (sprt) multiple target hypothesis