| 摘要 |
PROBLEM TO BE SOLVED: To obtain high-speed real-time identification and estimation for time constant and varying systems. SOLUTION: An estimation criterion for H∞is determined newly, and a high-speed algorithm for a deformed H∞filter is developed based on this criterion, while a method for high-speed time-varying system identification is proposed, based on this high speed H∞filtering algorithm. The high-speed H∞filtering algorithm can track a time-varying system, which changes rapidly with a calculation volume O (N) per unit-time step. It matches perfectly with the high-speed Kalman filtering algorithm at the limit of the upper limit value. If the estimated value of an impulse response is obtained, a pseudo-echo can be determined successively based on the value. Subtracting the pseudo-echo from the real echo and canceling echo can provide an echo canceller.
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