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9010723 Electric actuator  
An electric actuator has a motor, an electricity storing body, a switch and a resetting unit. The switch is provided in a supply path of electric power from the electricity storing body to the...
9007008 Method for controlling the operation of an arrangement of at least two electric machines, and motor vehicle  
A method for controlling the operation of an arrangement of at least two electric machines coupled to different wheels of a motor vehicle and connected to a battery which provides an actual...
8994316 Stepper motor controller  
A method for controlling multiple stepper motors with a single micro-controller output set uses a demultiplexer to split a single micro-controller output set into individual control signals for a...
8975854 Variable torque control of a stepper motor  
A stepper motor may be controlled by a controller to provide extended revolution of a motor shaft while operating in a first mode and to allow a user to manually intervene with an intended...
8963475 Micro-step driving control apparatus for stepping motor  
A micro-step driving control apparatus for a stepping motor in which torque fluctuations caused by influence of detent torque can be reduced without performing preliminary driving, including: a...
8957620 Motor control apparatus, motor control method, motor system, and computer-readable medium  
A motor control apparatus that controls the rotational angle of a motor (111) which drives a rotating body (112) includes a synchronizing means (200) for generating and outputting an interrupt...
8952646 Stepper motor phase failure detection  
Embodiments are directed to a stepper motor and a controller, where the controller measures a parameter associated with a current of the stepper motor prior to support of commanding a step in...
8941350 Power conversion apparatus, power conversion method, motor system, and two-phase induction motor  
A power conversion method including: receiving an input voltage which is a single-phase AC voltage; designating a first target voltage and a second target voltage respectively representing...
8928271 Method and apparatus to convert a minimally controlled pulse stream into a proper mechatronic trajectory  
An apparatus or method which accepts a burst of pulses at a frequency which may not be tightly controlled and converts this into a trajectory command that is a suitable motion profile for an...
8896257 Motor control device and out-of-step detecting method of stepping motor  
There is provided a motor control device configured to control an energization state of a coil of each phase for driving a stepping motor having multiple phase coils. The motor control device...
8890462 Stepper motor with common solenoid current driver  
A stepper motor assembly includes a unipolar winding stepper motor, four drivers, and a transmission control module. The stepper motor has four coil parts. Each driver has a transistor connected...
8860352 System and method for controlling actuators  
A method controls an operation of an actuator. A first control signal is determined to change a position of a moving element of the actuator according to a trajectory of the moving element. A...
8841875 Electronic watch  
Provided is an electronic watch capable of, even if an indicating hand having a large moment of inertia is used, accurately determining success and failure of rotation. The electronic watch...
8841874 Method of detecting an operating condition of an electric stepper motor  
An electrical stepper motor comprises a magnetical rotor and at least two electromagnetical driving coils for causing rotation of the rotator. A method of detecting an operating condition of the...
8836269 Method for detecting blockages of electrically commutated electric motors  
A method for detecting blockages of unipolar stepper motors by analyzing the motor current supply, comprising impressing a current into one or more motor windings using a controllable switch,...
8823311 System and method for controlling a step motor  
In an embodiment, a method of controlling a step motor system includes operating the step motor system in a normal mode. In the normal mode, the step motor is advanced upon receipt of a step...
8823310 Stepping motor controller and image-reading device  
A stepping motor controller for controlling a stepping motor, includes: a motor driver; and a driver control unit. The motor driver includes: an excitation phase control unit; and a drive unit....
8810187 Method and apparatus for misstep detection and recovery in a stepper motor  
A stepper motor system and apparatus use a position-feedback device, which may have a resolution capability as low as 200 counts per motor shaft revolution, for misstep detection and motor step...
8810181 Control apparatus and measuring apparatus  
A control apparatus for controllably driving a drive mechanism which displaces a movable member, includes: an electric-current detecting unit configured to detect electric current for driving the...
8810185 Drive circuit and method  
A stepping motor includes two coils. A driver circuit drives the stepping motor by setting dissimilar phases of supply currents to these two coils. One terminal of one coil is connected to ground...
8810186 Motor drive device, timepiece device, and electronic device  
A motor drive device includes a charging detection and reverse current prevention portion and a pulse selection control portion. The charging detection and reverse current prevention portion...
8773061 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...
8766585 Device for controlling an on-board apparatus  
A control device (1) for controlling on-board equipment has a mount (5) having hinged thereto at least one drive lever (2) movable between two extreme positions, and also including a magnetic...
8723471 System and method for operating an exoskeleton adapted to encircle an object of interest  
This invention relates to a servo system for operating an exoskeleton adapted to encircle an object of interest and for supplying a force thereon. A servomotor is coupled to a power source and...
8716959 Hall-effect based linear motor controller  
A linear motion control device for use in a linear control system is presented. The linear motion control device includes a coil driver to drive a coil that, when driven, effects a linear movement...
8698443 Stepping motor control circuit and analog electronic timepiece  
A stepping motor control circuit and an analog electronic timepiece which can detect a rotation state including intermediate stopping more accurately are provided. A rotation detection circuit, in...
8698438 Motor control apparatus, image forming apparatus and motor control method  
According to one embodiment, a motor control apparatus includes a timer to measure a period in which a job is not executed, a sensor to detect a temperature of a physical object, an acquisition...
8698431 Drive control circuit for linear vibration motor  
A drive signal generating unit generates a drive signal used to alternately deliver a positive current and a negative current to a coil. A driver unit generates the drive current in response to...
8692492 Lead angle value setting method, motor driving control circuit, and brushless motor  
A method for setting a lead-angle value of a motor drive control circuit is disclosed. The motor drive control circuit energizes and drives the windings of a motor with an energizing timing based...
8674646 Vehicle display system and motor control device therefor  
A step motor and a motor control unit are connected to a battery, so that electrical power is continuously supplied to the step motor and the motor control unit. The motor control unit...
8669728 Angle detection apparatus and method for rotor of motor  
An angle detection apparatus for a rotor of a motor includes a period counter, a step period generator, and an angle generator. The period counter receives a rotor sensing signal, and calculates a...
8604744 Motor drive circuit for rotating a rotor by supplying the currents to two coils  
When a driver unit is in a high impedance state as viewed from a first coil or a second coil, an induced voltage detector detects the voltage across the first coil or that across the second coil...
8593086 System and method including feed-forward control of a brushless synchronous motor  
A drive system, such as for a fluid jet cutting system, includes a brushless synchronous motor configured to drive movement through a loosely coupled transmission, a sensor configured to sense...
8569992 Stepper motor controller and method for controlling same  
A stepper motor controller includes control circuitry with control outputs and individual driver pulse width modulation (PWM) circuitry with individual driver PWM outputs and modulation control...
8547053 Alternating current chopper circuit with low noise  
An alternating current chopper circuit with low noise is disclosed. The circuit includes a switching circuit, a first freewheel circuit, and a second freewheel circuit. The switching circuit has a...
8536821 Redundant interface for a stepper motor  
A multi-channel stepper motor controller has at least a first and second stepper motor control channel. Each of the control channels has a solid state switching circuit operable to connect the...
8513910 Method of returning pointer to origin point  
There is provided a method of returning a pointer driven by a motor to an origin point disposed between a starting point and an endpoint of a movement range of the pointer, the method comprising...
8508815 Scanner  
A scanner with a first driving motor and a second driving motor has an improved driving structure as transmission of a driving force from one of the first and the second driving motors to the...
8508175 Driver circuit  
A stepping motor includes two coils. A driver circuit drives the stepping motor by setting dissimilar phases of supply currents to these two coils. One terminal of one coil is connected to ground...
8508177 Stepping motor drive device  
A stepping motor drive device includes: a first pulse generation circuit that generates pulses at rising or falling edges of a first clock signal; a second pulse generation circuit that generates...
8508176 Drive apparatus for stepping motor  
A drive apparatus for a stepping motor, including: a current detecting portion which detects a current value of phase current flowing through a phase winding; a constant-current-controlling...
8497653 Driver circuit for driving a stepping motor  
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...
8482241 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.
8471502 Vibration damping apparatus, electric actuator driving apparatus and vehicle  
A vibration damping apparatus including reference wave production section that produces a reference wave; a fundamental order adaptive algorithm block that calculates fundamental order adaptive...
8427095 Actuation system with step motor  
The actuation system including a control system, an actuator comprising a drive part and a step motor comprising a rotor and a stator with at least one electric phase, an actuated system...
8400099 Meter system with indicator for vehicle  
A meter system includes: an indicator including a pointer, a step motor, a stopper mechanism and a driving controller; and a flasher function unit including a flasher switch, a flasher and a...
8390236 Drive system for operating an electric device  
A drive system is disclosed for operating an electric device. The drive system includes an electric motor having a permanent magnet rotor connectable to the electric device for controlling the...
8390235 Method and hardware system for driving a stepper motor in feed-forward voltage mode  
A method of driving a stepper motor in a feed-forward voltage mode may include for a desired speed for the stepper motor setting an amplitude of a sinusoidal phase voltage of the stepper motor to...
8378612 Control system and method of operating a massage device  
A control system for a massage device. The massage device has a base, a carriage movably engaged with the base, a plurality of kneading heads mounted on the carriage, and a motor operative to...
8373374 Apparatus equipped with motor and driving method for the motor  
An apparatus including a DC motor includes a driven member configured to be driven by the DC motor, and a drive control unit configured to define a plurality of predetermined phases of the DC...