Title:
【発明の名称】回転制御装置
Document Type and Number:
Japanese Patent JP2536847
Kind Code:
B2
Abstract:
PURPOSE:To remove the influence of specified rotation fluctuation component such as motor rotation irregularity, etc., by passing the AC component of rotating speed detection signals through a tandem type filter. CONSTITUTION:A differentiating circuit 24 differentiates speed error data DS. After multiplied by a factor of K0 by the use of a multiplier 25, the data DS are added to a digital tandem type filter circuit 4 of next stage, where the operation is carried out only with respect to AC elements with DC components removed. As a result, the data with respect to the acceleration is obtained from this tandem type filter circuit 4 in which 30Hz and its higher harmonic wave elements are removed. Thus, as the data US are differentiated beforehand removing the DC elements and containing the AC components only which are added to the tandem type filter circuit 4, only the true rotation irregularity component can be removed.
Inventors:
MACHIDA MASAHIKO
TOMITAKA TADAFUSA
TOMITAKA TADAFUSA
Application Number:
JP13468586A
Publication Date:
September 25, 1996
Filing Date:
June 10, 1986
Export Citation:
Assignee:
SONY CORP
International Classes:
G11B15/46; G11B15/473; H02P25/098; H02P29/00; (IPC1-7): H02P5/00; G11B15/46
Domestic Patent References:
| JPS5740746A | ||||
| JPS6038660A | ||||
| JPS49114488A |
Attorney, Agent or Firm:
Tsuchiya Masaru