Ronald K Roseman

US Patent:

6445099, Sep 3, 2002

Filed:

May 9, 2000

Appl. No.:

09/568317

Inventors:

Ronald W. Roseman - Walton Hills OH

Assignee:

TRW, Inc. - Lyndhurst OH

International Classification:

H02K 708

US Classification:

310 90, 310 68 R, 340682

Abstract:

A bearing failure detector for an electrical generator includes a disc located within the bearing assembly near the location of the main bearings. The disc has a central opening through which the shaft extends, and the disc includes a thin, electrically conductive ring which is plated or formed as a film inside the central opening. The ring is exposed to the shaft along inside diameter of the detector disc adjacent to the periphery of the shaft, but a gap is normally provided around the shaft when the shaft is properly supported by the main bearings, so that the shaft does not contact the ring unless the bearings are significantly worn. The ring provides a closed circuit, and it is connected to a control circuit which monitors the closed circuit at all times. When the internal clearance of the main bearings has been enlarged by a predetermined amount, the ring contacts the shaft, causing the thin ring to be quickly worn away. This causes an open circuit through the detector, which is sensed by the control circuit to provide an indication that the bearings need replacement.

US Patent:

20010009363, Jul 26, 2001

Filed:

Feb 12, 2001

Appl. No.:

09/781762

Inventors:

Kevin Rice - Stow OH, US
Ronald Roseman - Walton Hills OH, US
Charles Green - Cleveland Heights OH, US
Dean Snider - Twinsburg OH, US

International Classification:

H02H007/06
H02P009/00
H02P011/00

US Classification:

322/028000, 322/036000

Abstract:

A controller for a starter.generator used with an aircraft engine, includes means for monitoring field return current in a generator field winding; means for monitoring generator voltage; and microprocessor control means for adjusting generator field current as a function of the field current and voltage and field return current. The field return current and output voltage monitoring functions allow for open field, field integrity, over voltage, field weakening and torque limiting functions to be realized in an integrated programmable system configuration.

US Patent:

59031301, May 11, 1999

Filed:

Aug 18, 1997

Appl. No.:

8/937309

Inventors:

Kevin E. Rice - Stow OH
Ronald W. Roseman - Walton Hills OH
Charles A. Green - Cleveland Heights OH
Dean A. Snider - Twinsburg OH

Assignee:

Lucas Aerospace Power Equipment Corporation - Aurora OH

International Classification:

H02P5/28

US Classification:

318811

Abstract:

A controller for a starter/generator used with an aircraft engine, includes means for monitoring field return current in a generator field winding; means for monitoring generator voltage; and microprocessor control means for adjusting generator field current as a function of the field current and voltage and field return current. The field return current and output voltage monitoring functions allow for open field, field integrity, over voltage, field weakening and torque limiting functions to be realized in an integrated programmable system configuration.

US Patent:

58015167, Sep 1, 1998

Filed:

May 30, 1997

Appl. No.:

8/866763

Inventors:

Kevin E. Rice - Stow OH
Ronald W. Roseman - Walton Hills OH
Charles A. Green - Cleveland Heights OH
Dean A. Snider - Twinsburg OH

Assignee:

Lucas Aerospace Power Equipment Corp. - Aurora OH

International Classification:

H02P 910

US Classification:

322 37

Abstract:

A controller for a starter/generator used with an aircraft engine, includes means for monitoring field return current in a generator field winding; means for monitoring generator voltage; and microprocessor control means for adjusting generator field current as a function of the field current and voltage and field return current. The field return current and output voltage monitoring functions allow for open field, field integrity, over voltage, field weakening and torque limiting functions to be realized in an integrated programmable system configuration.

US Patent:

56636326, Sep 2, 1997

Filed:

Jul 17, 1995

Appl. No.:

8/503383

Inventors:

Ronald W. Roseman - Walton Hills OH
Kevin E. Rice - Stow OH

Assignee:

Lucas Aerospace Power Equipment Corp. - Aurora OH

International Classification:

H02P 910

US Classification:

322 59

Abstract:

Apparatus and method for connecting a generator to an energized bus includes a circuit for determining voltage differential between the generator voltage and the bus voltage; a circuit for connecting the generator to the bus when the voltage differential reaches a predetermined threshold; a circuit for limiting the generator field current during build-up so that the generator reaches a predetermined speed before the generator is connected to the bus.

US Patent:

61539422, Nov 28, 2000

Filed:

Jul 21, 1997

Appl. No.:

8/897368

Inventors:

Ronald W. Roseman - Walton Hills OH
Kevin E. Rice - Stow OH

Assignee:

Lucas Aerospace Power Equipment Corp. - Aorora OH

International Classification:

F02N 1104
H02P 904

US Classification:

290 47

Abstract:

A starter cutoff control apparatus and method for a starter/generator used on an engine includes a circuit for detecting starter/generator armature current during an engine start operation, comparing the armature current to an armature current setpoint to produce an error signal; using the error signal to produce a field weakening control signal; and a circuit for producing a starter cutoff signal as a function of the field weakening control signal.

US Patent:

56231970, Apr 22, 1997

Filed:

Apr 25, 1994

Appl. No.:

8/232704

Inventors:

Ronald W. Roseman - Walton Hills OH
Kevin E. Rice - Stow OH

Assignee:

Lucas Aerospace Power Equipment Corporation - Aurora OH

International Classification:

H02J 714

US Classification:

320 61

Abstract:

A system for actively controlling the charging profile of a battery uses a software-based generator control unit to control the charging voltage. The voltage may be initially reduced following battery discharge to prevent large current inrush transients. The voltage may then be raised above a normal charging level to increase the battery charging rate. The control system provides better control over battery charging prevent overheating of the battery and generator and allows the battery to be recharged more quickly.

US Patent:

55834205, Dec 10, 1996

Filed:

Oct 1, 1993

Appl. No.:

8/131196

Inventors:

Kevin E. Rice - Stow OH
Ronald W. Roseman - Walton Hills OH
Charles A. Green - Cleveland Heights OH
Dean A. Snider - Twinsburg OH

Assignee:

Lucas Aerospace Power Equipment Corporation - Aurora OH

International Classification:

H02J 714

US Classification:

322 25

Abstract:

A controller for a starter/generator used with an aircraft engine, includes means for monitoring field return current in a generator field winding; means for monitoring generator voltage; and microprocessor control means for adjusting generator field current as a function of the field current and voltage and field return current. The field return current and output voltage monitoring functions allow for open field, field integrity, over voltage, field weakening and torque limiting functions to be realized in an integrated programmable system configuration.