Abstract
Type-head driving system in printer is possible to be replaced by the linear vibration system which is composed of masses, springs and viscous dampers. This paper presents the residual vibration on the positioning of the multi-degree-of-freedom system driven by cam. By analyzing the residual vibration to the components due to the natural frequencies of the system and comparing them with the single-degree-of-freedom system, the following results are obtained:(1) The ratio of amplitude of the multi-degree of-freedom system to that of the single-degree-of-freedom system only depends on the characteristics of the systems and has no relation with cam profile.(2) In case of the undamped system, the following expression are given:Ak(λ)=Ck·A1(λ·ωk/ω1), where Ak(λ) is the amplitude of the k'th component, Ck is coefficient decided by characteristics of the system, ωk is the k'th natural frequency, and λ is the ratio of cam-rise-period to the first natural vibration period of the system.
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