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Class Information
Number: 318/634
Name: Electricity: motive power systems > Positional servo systems (e.g., servomechanisms) > With compensating features > Temperature compensation
Description: Subject matter in which the compensating means compensates for temperature effects on the servo.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7291995 |
Air fan rotation speed control method and structure thereof |
Nov. 6, 2007 |
| 7202624 |
Self calibrating fan |
Apr. 10, 2007 |
| 7166978 |
Motor temperature sensor system and method to determine motor performance |
Jan. 23, 2007 |
| 7109680 |
Inverter device |
Sep. 19, 2006 |
| 7029239 |
Piecewise linear control of the duty cycle of a pulse width modulated signal |
Apr. 18, 2006 |
| 6979971 |
Control device-built-in cylinder servo motor |
Dec. 27, 2005 |
| 6791785 |
Disk drive with efficient coil temperature estimation |
Sep. 14, 2004 |
| 6748298 |
Method for limiting the force action of a robot part |
Jun. 8, 2004 |
| 6534945 |
Creel for a textile machine producing cheeses |
Mar. 18, 2003 |
| 6291958 |
Temperature limiting controller for electric machines |
Sep. 18, 2001 |
| 6282380 |
Position control apparatus, focus adjustment apparatus and camera |
Aug. 28, 2001 |
| 6229275 |
Semiconductor integrated circuit device for use in a disk drive |
May. 8, 2001 |
| 6054829 |
AC motorized wheel control system |
Apr. 25, 2000 |
| 6023145 |
Head and disk tester with a thermal drift-compensated closed-loop positioning system |
Feb. 8, 2000 |
| 5845045 |
Method and apparatus for DC motor speed control |
Dec. 1, 1998 |
| 5833407 |
Method for estimating heat-included displacment in a machine tool |
Nov. 10, 1998 |
| 5821715 |
Pulsed alignment commutation state for sensorless motor start |
Oct. 13, 1998 |
| 5808438 |
Method and system for limiting current in a read/write head retract circuit |
Sep. 15, 1998 |
| 5633568 |
Method and apparatus for dynamic low voltage spindle motor operation |
May. 27, 1997 |
| 5619414 |
Thermal displacement correcting method of machine tool |
Apr. 8, 1997 |
| 5525885 |
Position detecting apparatus and position compensating method therefor |
Jun. 11, 1996 |
| 5420490 |
Apparatus and method for compensating for warm-up drift in a servo motor |
May. 30, 1995 |
| 5363025 |
Actuator employing unidirectional motor for bidirectional rotational positioning |
Nov. 8, 1994 |
| 5239331 |
Brake device for motor in camera |
Aug. 24, 1993 |
| 5111348 |
Magnetic head including thermoelectric positioning means |
May. 5, 1992 |
| 5093607 |
Industrial robot system |
Mar. 3, 1992 |
| 5021722 |
Composable protection and control apparatus for motors |
Jun. 4, 1991 |
| 5014335 |
Method of controlling at least one electric motor on an offset printing machine |
May. 7, 1991 |
| 4926077 |
Resistance compensation in a motor using a thermally variable resistive network |
May. 15, 1990 |
| 4919575 |
Apparatus for compensating for the thermal displacement of the main spindle of a machine tool |
Apr. 24, 1990 |
| 4849840 |
Carriage device for floppy disk apparatus having head arm with regulating material |
Jul. 18, 1989 |
| 4814908 |
Thermo servo for track centering on a disk |
Mar. 21, 1989 |
| 4782404 |
Positioning system for a disc drive using a stepper motor |
Nov. 1, 1988 |
| 4731680 |
Disk drive with stored positioning data related to disk expansion |
Mar. 15, 1988 |
| 4698566 |
Apparatus for controlling motor speed |
Oct. 6, 1987 |
| 4697213 |
Index servo type magnetic head positioning control apparatus and method thereof |
Sep. 29, 1987 |
| 4668157 |
Industrial robot system |
May. 26, 1987 |
| 4651576 |
Gyroscope having temperature controlling arrangement |
Mar. 24, 1987 |
| 4590580 |
Automatic measurement/compensation apparatus for tool diameter |
May. 20, 1986 |
| 4533858 |
Temperature compensation apparatus for gear shapers |
Aug. 6, 1985 |
| 4472669 |
Compensated resolver feedback |
Sep. 18, 1984 |
| 4471443 |
Compensation method and apparatus for thermal displacement |
Sep. 11, 1984 |
| 4455583 |
Compensation for dimensional changes in a record medium |
Jun. 19, 1984 |
| 4350940 |
System for servocontrolling a separately excited DC motor |
Sep. 21, 1982 |
| 4349822 |
Inductive potentiometer |
Sep. 14, 1982 |
| 4348624 |
Thermal servo system for mechanical positioning |
Sep. 7, 1982 |
| 4214191 |
System for automatic management of tool life |
Jul. 22, 1980 |
| 4207601 |
Transient temperature compensation for moving head disk drive |
Jun. 10, 1980 |
| 4195250 |
Automatic measuring and tool position compensating system for a numerically controlled machine tool |
Mar. 25, 1980 |
| 4160937 |
Process for the control of the forward speed of work-pieces |
Jul. 10, 1979 |
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