Abstract
According to mechanical resonance problem in flight simulation servo system( turntable system),the principles of resonance suppression about traditional notch filter and second-order low-pass filter were analyzed. Afterwards the two-second resonance suppression digital filter was proposed. The two-second digital filter combines the characteristics of traditional notch filter and second-order low-pass filter,and it can suppress the resonance point and the anti-resonance point at the same time. Through theoretical analysis and simulation combination,the principle of the two-second digital filter restraining the resonance point and the anti-resonance point simultaneously was explained. The experiments were also conducted,in which above all filters were joined into the turntable system respectively. Experimental results show that,the proposed filter ensures high tracking precision meanwhile effectively widens the bandwidth of the servo system.
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