METHOD OF CONTROLLING A MOTOR - ASPEN MOTION TECHNOLOGIES INC

Title:

METHOD OF CONTROLLING A MOTOR

Document Type and Number:

WIPO Patent Application WO/2011/031788

Kind Code:

A3

Abstract:

Embodiments of the invention provide methods of controlling a motor, such as a servo motor. One method can include monitoring a current temperature of the motor and a power stage of the motor substantially continuously and substantially in real-time. This method can include determining optimum settings for a first time interval to remove power and the second time interval to provide power in order to deliver maximum output while remaining below the maximum rated temperature of the motor. One method can include pulsing power to the motor for a second time interval after a first time interval has elapsed and tailoring pulse shapes of the power provided to the motor for the second time interval. One method can include calculating a maximum phase current based on the rotor shaft torque for each real-time speed of the motor that correlates to the maximum allowable current draw from the power supply.

Inventors:

FLANARY RON (US)
PIEDL MARTIN (US)
FORD CHARLES (US)
ANDERSON TROY (US)

Application Number:

PCT/US2010/048166

Publication Date:

June 03, 2011

Filing Date:

September 08, 2010

Export Citation:

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Assignee:

ASPEN MOTION TECHNOLOGIES INC (US)
FLANARY RON (US)
PIEDL MARTIN (US)
FORD CHARLES (US)
ANDERSON TROY (US)

International Classes:

G05B5/00

Foreign References:

US7248009B1	2007-07-24
US6674260B1	2004-01-06
US20090309531A1	2009-12-17
US6763804B2	2004-07-20
US20040232872A1	2004-11-25
US6291958B1	2001-09-18
US7304447B2	2007-12-04