Mutual interference suppressing system for information storage device

Abstract

Abstract PURPOSE:To suppress mutual interference at the time of seaking operation of head actuators by attenuating an acceleration signal for one head actuator and impressing the attenuated signal to the other head actuator with reverse polarity as a driving current. CONSTITUTION:The titled system is provided with acceleration signal forming circuits 4a, 4b for differentiating speed signals va, vb to form acceleration signals by controlling respective driving signals 3a, 3b by the speed signals va, vb to form the acceleration signals alphaa, alphab from the speed signals va, vb. These signals alphaa, alphab are inputted to the other driving systems each other with reverse polarity. Thereby, the driving current ia of the head actuator 2a in the system (a) is obtained by adding the acceleration signal alphab of the system (b) with reverse polarity to the sped signal va in the system (a) and the driving current ib of the head actuator 2b in the system (b) is obtained by adding the acceleration signal alphaa of the system (a) with reverse polarity to the speed signal vb of the system (b). In both the cases, the signal with reverse polarity is impressed to the driving current in the other system so that gain is reduced. Consequently, mechanical interference due to operation between the actuators can be electrically and stably suppressed.

Inventors

• 👤 Toshibumi Hatagami
• 👤 Toru Shinohara
• 👤 Masato Iwatsubo
• 👤 Makoto Mizukami
• 👤 Takao Kakizaki

Bibliographic Details