公开(公告)号：EP2107337A2

公开(公告)日：2009-10-07

申请号：EP09001096.8

申请日：2009-01-27

申请人： Hitachi Ltd.

发明人： Matumoto, Masahiro ,  Okada, Yasushi ,  Nakamura, Toshiaki

IPC分类号： G01C19/00

CPC分类号： G01C19/56 ,  G01C19/5719 ,  G01C19/5726

摘要： An oscillator (4) is oscillated at a predetermined oscillation frequency. A detecting unit (1) exerts Coriolis force on the oscillator. A repetitive control system (8) applies an external force to the oscillator (4) so as to cancel out the Coriolis force to achieve an angular velocity measuring operation at a high sensitivity and a high S/N ratio.