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Class Information
Number: 318/696
Name: Electricity: motive power systems > Open-loop stepping motor control systems
Description: Subject matter in which a rotary electric motor; of the type in which the rotary element tends to assume a predetermined angular position when the motor is continuously energized; indexes in discrete angular increments of essentially uniform magnitude as a function of pulse inputs derived from outside the motor.

Patents under this class:

Patent Number Title Of Patent Date Issued
7088072 Motor control system Aug. 8, 2006
7078839 Self-bearing step motor and its control method Jul. 18, 2006
7061203 Method and related apparatus for controlling calibration of a stepping motor Jun. 13, 2006
7053584 Motor driving device May. 30, 2006
7053585 Gaming machine May. 30, 2006
7049785 Apparatus and method of controlling a stepper motor May. 23, 2006
7034495 Indicating instrument Apr. 25, 2006
7034496 Pointing position correcting method, pointing position correcting apparatus, and pointing apparatus Apr. 25, 2006
7030587 Configuration of converter switches and machine coils of a switched reluctance machine Apr. 18, 2006
7026781 Stepping motor driving system, information recording and reproducing device, and stepping motor driving method Apr. 11, 2006
7023157 Stepping motor drive device and method Apr. 4, 2006
7023165 Stepping motor control apparatus Apr. 4, 2006
7023653 Floppy disk apparatus Apr. 4, 2006
7019475 Motor stop control device for gaming machine and gaming machine provided with the motor stop control device Mar. 28, 2006
7019481 Carriage driving apparatus and motor control method Mar. 28, 2006
7019484 Stepping motor driver Mar. 28, 2006
7002316 Vehicle HVAC door with enclosed motor Feb. 21, 2006
7003373 Method and device for numerical control Feb. 21, 2006
6997799 Damper including a stepper motor Feb. 14, 2006
6998806 Motor stop control device for gaming machine and gaming machine with the same Feb. 14, 2006
6998813 Device for generation of a signal dependent on rotational speed for an electric motor, in particular for an electronically-commutated DC motor Feb. 14, 2006
6992459 Stepping motor controlling apparatus and method, and image reading apparatus and method Jan. 31, 2006
6982815 Image reading apparatus Jan. 3, 2006
6979972 Method and apparatus for detecting a stalled stepper motor Dec. 27, 2005
6979973 Apparatus to and method of controlling step motor Dec. 27, 2005
6972876 Image reading apparatus Dec. 6, 2005
6969930 Half-stepping motor with bifilar winding ratio for smooth motion Nov. 29, 2005
6963415 Recording apparatus Nov. 8, 2005
6956351 Driving device for stepping motor Oct. 18, 2005
6946813 Step motor control device and electronic timepiece equipped with step motor control device Sep. 20, 2005
6946814 Stepping motor driver Sep. 20, 2005
6943523 Brushless motor control system Sep. 13, 2005
6930463 Container inspection machine Aug. 16, 2005
6927880 Image reading device and method Aug. 9, 2005
6924616 Rotational driving apparatus Aug. 2, 2005
6922036 Method and apparatus for reducing noise and vibration in switched reluctance motor drives Jul. 26, 2005
6914407 Step motor control device and electronic timepiece equipped with step motor control device Jul. 5, 2005
6914855 Circuit for driving motor coils in stepping motors Jul. 5, 2005
6911800 Stepping motor controller, scanning apparatus, and image forming apparatus Jun. 28, 2005
6909256 Control device of a position control motor Jun. 21, 2005
6903531 Circuit for driving a stepper motor and method of controlling a stepper motor driver Jun. 7, 2005
6903848 Image reading apparatus, image recording apparatus and image forming apparatus Jun. 7, 2005
6900611 Recording apparatus May. 31, 2005
6900612 Stepping motor, stepping motor device and driving method thereof May. 31, 2005
6879128 Method and apparatus for independently controlling each phase of a multi-phase step motor Apr. 12, 2005
6870346 Method and apparatus for controlling acceleration and velocity of a stepper motor Mar. 22, 2005
6867566 Method and apparatus for improved low current accuracy in multi-phase step motors Mar. 15, 2005
6861817 Method and apparatus for detecting a stall condition in a stepping motor Mar. 1, 2005
6861818 Stepper motor controller system and a method thereof Mar. 1, 2005
6853162 Re-zeroing of a stepper motor without noise or movement Feb. 8, 2005

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