Matches 1 - 50 out of 57 1 2 >


Match Document Document Title
US20060186853 Method for identifying the rotation of a stepper motor driving at least one hand of a clock  
In a method for identifying the rotation of a stepper motor which includes a rotor provided with a motor coil driving at least one hand of a timepiece, wherein a drive voltage pulse and a first...
US20090261772 Advanced method for stepper motor speed determination  
A method and apparatus for determining speed of a stepper motor. In one embodiment of the method, a first terminal of a first coil of the stepper motor is coupled to an input of a multibit...
US20090051310 Closed Loop Stepper Motor Control  
System and method for controlling a stepper motor. A current position of the stepper motor may be received. A position error of the stepper motor may be determined using the current position of...
US20090309534 AUTOMATICALLY DETERMINING OPTIMAL PULSE DURATION FOR A STEPPER MOTOR  
A system for calculating control pulse duration for optimal stepper motor performance. Duration of control pulses to a stepper motor is increased until stepper motor function begins. The duration...
US20080116837 Counter Electro-Motoric Force Base Functional Status Detection of an Electro-Motor  
The present invention relates to a circuit for detecting a functional status of an electro-motor. Typical electro-motors need additional components to identify the functional status of the motor....
US20090039823 Stepper Motor Control Apparatus  
A stepper motor apparatus controls a stepper motor by taking a maximum response speed and maximum response acceleration of the stepper motor into account.
US20090039821 STEP MOTOR DRIVING APPARATUS  
A step motor driving apparatus includes a micro control unit (MCU), a pulse generator, a first step motor driver, a second step motor driver, and a communication port. The first step motor driver...
US20060170388 Optical image stabilizer and a method of controlling the optical image stabilizer  
An optical image stabilizer includes an optical system including at least one image shake counteracting optical element movable in a plane orthogonal to an optical axis; at least one stepping...
US20080018286 Method for controlling the angular position of a stepper motor  
The invention relates to a method for controlling the angular position [STP_POS] of a stopless rotatably movable member [1] of a stepper motor, the said movable member [1] being designed to...
US20080116835 MODEL-BASED ACTIVE ELECTRONIC DAMPING FOR STEPPER MOTORS  
A method for damping vibrations in a stepper motor with micro-stepping control which comprises the steps of identifying the force amplitudes and phase shifts of multiple harmonic detent torques of...
US20080231220 Image Forming Apparatus Appropriately Setting Current Value for Driving Motor  
When a printing instruction is provided, a CPU causes a stepping motor M to drive a developer and calculates the value of a load of the stepping motor M before printing operations are performed....
US20080100253 STEPPING MOTOR DRIVING DEVICE, LENS DRIVING DEVICE, AND CAMERA  
A stepping motor driving device which makes it possible to reduce electric power consumed by a stepping motor and at the same time suppress degradation of shake correcting performance. A CPU of...
US20080107435 Arrangement for Driving a Load Element  
In a method or system for driving a load element, a drive motor is provided on a drive shaft of the load element that establishes a drive rotation speed of the load element. A rotation torque...
US20130303989 MOTOR HEALTH MONITORING AND MEDICAL DEVICE INCORPORATING SAME  
Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a modulation module coupled to the motor, and a...
US20070296369 Thin linear, rotary, and step motor and electromagnet driver using printed coil board  
This invention first presents winding methods to make multiple printed coils on a thin multi-layered PCB. Multiple thin magnets can be laterally installed on a thin magnet board, too. Then, this...
US20090174358 METHOD AND APPARATUS FOR HIGH SPEED STEPPER MOTOR STALL DETECTION  
A detector device and a method for detecting a stall condition in a stepper motor, wherein the accumulated value of the back EMF is compared to a stall threshold when the stepper motor has...
US20090280559 GENETIC SEQUENCER INCORPORATING FLUORESCENCE MICROSCOPY  
A fluorescence microscopy sequencer comprises a fluid transport subsystem in which reagents are pumped through a series of multi-port valves to a mixer or one or more flow cells, or directly into...
US20080164835 STEPPING MOTOR CONTROLLER AND STEPPING MOTOR CONTROL PROGRAM  
A stepping motor controller for controlling a stepping motor which drives a load, including: a load drive state detection section which detects a driving state of the load; and a control section...
US20110133682 METHOD AND DEVICE FOR DETECTING STEP LOSSES OF A STEP MOTOR  
For activating a stepper motor, a pulse-width modulated current is supplied to a coil of the stepper motor and it is determined whether the current flowing through the stepper motor, based on a...
US20060244407 Stepper motor encoding systems and methods  
A method of producing a smoother torque from a multi-pole motor is described. The method includes determining an angular position of a rotor of the multi-pole motor, and producing a current to...
US20080297096 Disk Playback Apparatus And Stepping-Motor Control Apparatus  
When the magnitude of a traverse signal exceeds a predetermined level, the value of a microstep drive signal is changed by one microstep angle so that the rotation angle of the stepping motor...
US20080150468 Method for Position and/or Speed Control of a Linear Drive  
The invention relates to a method and a circuit layout for the position and/or speed control of a linear drive, in particular a servo drive for a linear robot. An electric motor is supplied via a...
US20140055073 DYNAMIC PULSE-WIDTH MODULATION MOTOR CONTROL AND MEDICAL DEVICE INCORPORATING SAME  
Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a sensor to obtain a measured displacement that...
US20130253419 DYNAMIC PULSE-WIDTH MODULATION MOTOR CONTROL AND MEDICAL DEVICE INCORPORATING SAME  
Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a sensor to obtain a measured displacement that...
US20120306428 STEPPING MOTOR CONTROL CIRCUIT AND ANALOG ELECTRONIC TIMEPIECE  
A control unit is provided which drives a stepping motor in a first mode in which a driving pulse is selected between one kind of main driving pulse and a correction driving pulse with energy...
US20100079102 Apparatus and Method for Minimizing Undesirable Stepper Motor Rotor Motions  
An apparatus for reducing undesired motions during initialization of a stepper motor having a rotor and windings, the apparatus comprising a rotary encoder for sensing direction of rotor rotation;...
US20140055076 OCCLUSION DETECTION USING PULSE-WIDTH MODULATION AND MEDICAL DEVICE INCORPORATING SAME  
Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a modulation module coupled to the motor, and a...
US20080265825 High-Current High-Resolution Driving Circuit  
The present invention discloses a high-current high-resolution driving circuit comprising a controller, a digital-to-analog converter and a voltage-to-current converter. The controller is provided...
US20070040529 Stepping motor control system and method for controlling a stepping motor using closed and open loop controls  
A stepping motor is driven in both closed-loop and open-loop modes while initiating microstepping after a predetermined threshold velocity has been reached. A feedback device such as an encoder is...
US20050264253 Linear power module  
The present invention includes a reliable, configurable, compact, and low-cost linear electric motor controller for a vehicular heating ventilating and air conditioning (HVAC) system and methods...
US20090184677 System and method for using a stepper motor as a rotary sensor  
A method and apparatus for driving a stepper motor and using the stepper motor as a rotary sensor when the stepper motor is not being driven.
US20080079384 Apparatus, method, and system for controlling stepping motor  
A stepping motor controller that alleviates the CPU burden of motor control tasks. An acceleration control starter initializes a pointer register with a given start angle address upon receipt of a...
US20090184834 SYSTEM AND METHOD FOR MONITORING STEP MOTOR  
A method for monitoring a step motor is provided, wherein the step motor rotates from a start position to an end position and then back to the start position repeatedly. The monitoring method...
US20080290830 Stepping motor driving device, sheet processing device, and image processing apparatus  
A stepping motor driving device drives a stepping motor according to a drive pulse of a step signal. A phase matching unit matches, at a time when there is a possibility that a rotor and a phase...
US20090001920 MICRO-STEP DRIVING METHOD OF STEPPING MOTOR AND ELECTRICALLY-DRIVEN DEVICE USING STEPPING MOTOR  
In a micro-step drive and driving method of a stepping motor, the stepping motor generates a drive force for movement on a prescribed path of a moving unit provided in an electrically driven...
US20070216335 Stepping motor controlling device  
A stepping motor controlling device according to the present invention includes lead angle computing means which computes a lead angle according to the load torque current deviation of the...
US20090315503 Control device of stepping motor, image reading device, control method and control program of stepping motor  
A method of reading an image by an image sensor comprising: a) reciprocating a carriage from a predetermined position in a predetermined direction by rotating a stepping motor to which a second...
US20060066282 Motor apparatus and optical scanning apparatus, each with feedback control of drive load  
A motor apparatus has a motor which is rotatable by electromagnetic force, a load mounted to an output shaft of the motor, and an angular detecting unit for detecting a rotational angle of the...
US20120176075 DRIVE CIRCUIT AND DRIVE METHOD OF A STEPPING MOTOR  
A stepping motor drive circuit includes a control-purpose controller including a control-purpose position detecting unit; a rotation command information inputting unit arranged to receive command...
US20100202069 Control Techniques for Motor Driven Systems  
A drive signal for a motor-driven mechanical system has zero (or near zero) energy at an expected resonant frequency of the mechanical system. The drive signal may be provided in a series of steps...
US20100131162 GEAR CONTROL SYSTEM AND METHOD  
A gear control system includes a pulse modulating circuit, a motor, and a central processing unit operatively coupled to the pulse modulating circuit and configured to control rotation of the...
US20100314566 SYSTEM AND METHOD OF STEP DETECTION FOR A STEPPER MOTOR  
A stepper motor and controller are provided for controllably adjusting the angular displacement of a rotor. The stepper motor has a plurality of stator coils that are configured to effect rotation...
US20110025251 MOTOR DRIVING DEVICE  
A motor-driving device comprising: a switching element to control a current passed through a first coil of a stepping motor including the first and a second coils electromagnetically coupled; a...
US20140055075 MOTOR HAVING PULSE MODE AND BRUSHLESS MODE, AND CONTROL METHOD AND APPARATUS OF THE MOTOR  
A motor includes a rotor having a magnet, a stator having two coils, and a controller configured to control excitations of the two coils. The stator includes first and second yokes excited by the...
US20100188036 DRIVER CIRCUIT  
An amount of a motor drive current is controlled to an appropriate value. Two coils are provided, and a rotor is rotated by the coils by setting different phases for the supplied currents to the...
US20110221380 Method and apparatus for providing precise position control for a wide range of equipment applications using SR motors in stepping control mode  
An apparatus is provided for utilizing a Switched Reluctance motor to position and hold a load in a desired position. In operation, one or more switch reluctance (SR) motors are capable of...
US20120306429 CONTROL DEVICE, ACTUATOR SYSTEM, AND CONTROL METHOD  
The control device comprises a position command creation part creating a target rotation angle value of a stepping motor, a position controller calculating the rotation speed of the stepping motor...
US20100156328 METHOD OF CONTROLLING MOTOR IN IMAGE READING APPARATUS  
Disclosed herein is a method of controlling a motor in an image reading apparatus. It may be possible to optimize the drive current of the motor for driving the movement of the scanning module by...
US20160299489 RESONANCE MOVEMENT DAMPENING SYSTEM FOR AN AUTOMATED LUMINAIRE  
Described is a motion control system for drive motors in automated multiparameter luminaires which employs jerk (3rd derivative of position as a function of time) to offset the resonance...
US20160285398 MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD  
A motor control unit having a motor structure that rotates a rotor by voltage excitation includes a photo interrupter, a slit rotation plate, a comparator, and an encoder circuit in order to...

Matches 1 - 50 out of 57 1 2 >