A sensor placement technique is proposed for implementing the hybrid adaptive feedforward observer. The observer is a conventional dynamic observer augmented with an adaptive feedforward component for estimating the effect of persistent, nonstationary disturbances. The placement technique searches for the least possible number of sensors that satisfy two criteria, the observability of the plant, and the lowest condition number of the error dynamic system's state matrix. Demonstration was performed on a one-dimensional acoustic duct. The results show that the proposed technique is an effective guideline for identifying the optimal sensor locations.
A Sensor Placement Strategy for the Hybrid Adaptive Feedforward Observer
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Tran, C. M., and Southward, S. C. (February 20, 2005). "A Sensor Placement Strategy for the Hybrid Adaptive Feedforward Observer." ASME. J. Dyn. Sys., Meas., Control. June 2006; 128(2): 449–452. https://doi.org/10.1115/1.2196421
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