SIGNAL PROCESSOR, ENCODER, AND MOTOR SYSTEM - YASKAWA DENKI SEISAKUSHO KK

Title:

SIGNAL PROCESSOR, ENCODER, AND MOTOR SYSTEM

Document Type and Number:

WIPO Patent Application WO/2011/125360

Kind Code:

A1

Abstract:

Disclosed are a signal processor, encoder and motor system with which it is possible to reduce the misalignment that occurs between the detected position calculated by an encoder and the actual position. The signal processor comprises: an AD converter that converts a periodic analog signal outputted from a detection unit according to the position (Q) of the motor into a digital signal in a predetermined conversion cycle (Tad); a tracking unit that calculates the position (P) of the motor in the calculation cycle (Tc) on the basis of the digital signal outputted at the conversion cycle (Tad) converted by the AD converter; an operating status specifying unit that specifies the operating status of a motor on the basis of the position (P) of the motor calculated by the tracking unit; and calculation cycle determining units (213), (216) that change the calculation cycle (Tc) of the tracking unit in such a manner that the position (P) of the motor, as calculated by the tracking unit according to the operating status of the motor specified by the operating status specifying unit, tracks the actual position (Q) of the motor.

More Like This:

JPH0783702	CONTROLLER FOR ULTRASONIC MOTOR ENCODER
JP4882955	Rotation detector

Inventors:

YOSHITAKE HIRONOBU (JP)
SAKATA TOSHIKAZU (JP)

Application Number:

PCT/JP2011/051215

Publication Date:

October 13, 2011

Filing Date:

January 24, 2011

Export Citation:

Click for automatic bibliography generation Help

Assignee:

YASKAWA DENKI SEISAKUSHO KK (JP)
YOSHITAKE HIRONOBU (JP)
SAKATA TOSHIKAZU (JP)

International Classes:

G01D5/244

Foreign References:

JPH04328410A	1992-11-17
JP2008299426A	2008-12-11
JP2009148055A	2009-07-02
JPH08272420A	1996-10-18
JPH1019598A	1998-01-23
JPH04328410A	1992-11-17

Other References: