US 7,038,421 B2Granted

Method and system for multiple servo motor control

AssigneeInternational Business Machines Corporation

InventorTimothy M. Trifilo

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Abstract

A system for control of a plurality of motors comprising: an inverter including at least three legs, with each leg including two series switching devices configured to receive a command from a controller. The system also includes a first motor operably connected to an inverter at a common terminal of the switching devices for a first leg and at a common terminal of the switching devices for a second leg; a second motor is operably connected to the inverter at the common terminal of the switching devices for the second leg and at a common terminal of the switching devices for a third leg. The outer terminals of the switching devices for each of the first leg, second leg and third leg are operably connected to the voltage source. The controller executes a process for controlling the first motor and the second motor with an error arbiter function.

Claims16

Dependent claims

A system for control of a plurality of motors comprising:

an inverter comprising at least three legs including a first leg, a second leg, and third leg, with each leg comprising two series switching devices configured to receive a command from a controller;
wherein said inverter is in operable communication with a voltage source and a controller;
a first motor operably connected to an inverter at a common terminal of said
switching devices for said first leg and at a common terminal of said switching devices for said second leg;
a second motor operably connected to said inverter at said common terminal of said switching devices for maid second leg and at a common tenninal of said switching devices for said third leg;
wherein outer terminals of said switching devices for each of said first leg, said second leg and said third leg are operably connected to said voltage source;
and
wherein control terminals for said switching devices are in operable communication with maid controller and each switching device is responsive to a command therefrom, said controller executing a process for controlling said first motor and said second motor wit an error arbiter function.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/465,484Filed 17 Jun 2003
Published: US 2004/0257022 A123 Dec 2004
Granted: 2 May 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H02P 5/68
Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors: controlling two or more DC…
H02P 7/05
For controlling the direction of rotation of DC motors: by means of electronic switching
H02P 7/29
Controlling armature supply only: using pulse modulation
H02P
Control or regulation of electric motors, electric generators or dynamo-electric converters