Abstract
The related theory and algorithm of adaptive inverse control were presented through the research which pointed out the adaptive inverse control strategy could effectively eliminate the noise influence on the system control. Proposed using a frequency domain filter-X LMS adaptive inverse control algorithm, and the control algorithm was applied to the two-exciter hydraulic vibration test system of random shock vibration control process and summarized the process of the adaptive inverse control strategies in the realization of the random shock vibration test. The self-closed-loop and field test show that using the frequency-domain filter-X LMS adaptive inverse control algorithm can realize high precision control of random shock vibration test.
Highlights
Shock test [1]-[3] is mainly used in the simulation of the transient impact signal of falling, shelling and artillery firing as a common vibration test method
Effective control of multi-axis hydraulic vibration test system relies on the accurate estimation of system frequency-response function (FRF) matrix, since the existence of nonlinear factors in the system, lead to the error between the actual system FRF matrix and the control matrix (FRF), to eliminate this error, there must be real-time update of the system FRF matrix to reduce the error between the control matrix and the actual matrix
This paper proposed using a frequency-domain filter-X LMS adaptive inverse control algorithm, and applied to the random shock vibration control process of two-exciter hydraulic vibration test system and summarize the process of the realization of adaptive inverse control strategies
Summary
Shock test [1]-[3] is mainly used in the simulation of the transient impact signal of falling, shelling and artillery firing as a common vibration test method. Since in the process of the real shock (such as the missile launch), the shock signal on the specimen is not standard combined with stochastic and shock characteristics at the same time, so the random shock vibration test is put forward, which can simulate the environment shock load on specimen. This paper proposed using a frequency-domain filter-X LMS adaptive inverse control algorithm, and applied to the random shock vibration control process of two-exciter hydraulic vibration test system and summarize the process of the realization of adaptive inverse control strategies. The self-closed-loop and field test show that using the frequency-domain filter-X LMS adaptive inverse control algorithm can realize high precision control of random shock vibration test
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