Physics

Finite impulse response

Mathematics

Gene

Algorithm

Filter (signal processing)

Artificial intelligence

Kalman filter

Control (management)

Chemistry

Digital filter

Computer science

Quantum mechanics

Computer vision

Control theory (sociology)

Biochemistry

Robustness (evolution)

Impulse (physics)

IEEE Transactions on Industrial Informatics

In this article, the multipass optimal finite impulse response (OFIR) filtering approach is developed for industrial processes with unknown initial conditions under temporary model mismatches. The forward and backward OFIR filters are derived in batch and fast iterative forms using recursions. The double-pass OFIR (DOFIR) filter supported by the unbiased FIR (UFIR) filter and triple-pass OFIR (TOFIR) filter starting with some initial values are designed and extensively investigated using simulations and experimental data. It is shown that the DOFIR and TOFIR filters are able to essentially improve the performance close to the initial values and are more robust against temporary model mismatches than the Kalman, OFIR, and UFIR filters.

Multipass Optimal FIR Filtering for Processes With Unknown Initial States and Temporary Mismatches