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7598697 |
Electric motor and a method therefor
A motor and a method for serves finding the position of an armature in relation to a stator of the motor. In the method and the motor the armature is driven by an exciting field which is produced...
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7378813 |
Method and device for determining the zero position of a yarn guide capable of cross-winding
A system for determining a zero position of a yarn guide ( 25 ) of a textile winding device for cross-winding yarn into cheeses via a step motor ( 34 ). The yarn guide ( 25 ), acted upon by the...
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7268504 |
Stator position feedback controller
Stator position feedback controller. A first position monitoring device responds to the position of a stator supported for relative motion by a machine base. A second position monitoring device...
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6518721 |
Oscillation isolator
An oscillation isolator for supporting an oscillation isolation platform on a pedestal includes an active oscillation isolator having a displacement generating type actuator to reduce oscillation...
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6509709 |
Stepping motor controller
The stepping motor controller comprising an excitation signal generator, a switching circuit, a PWM constant current control circuit and a current sensor further comprises a motor detector circuit...
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6498445 |
Oscillation apparatus for oscillating roller
An oscillation apparatus includes an oscillation mechanism for reciprocating an oscillating roller which can be rotated in the circumferential direction and can be reciprocated along the axial...
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6320347 |
Method of driving directly a rotary drum in a reproducing machine by a prime mover
A rotor composite type three-phase stepping motor having a stator consisting of two stator elements each having 6 n pieces of stator magnetic pole with Ns pieces of pole tooth formed on the tip end...
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6225773 |
Stepping motor and having external rotor and electromagnetic-combined-permanent magnet stator
A rotor composite type three-phase stepping motor having a stator consisting of two stator elements each having 6 n pieces of stator magnetic pole with Ns pieces of pole tooth formed on the tip end...
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6181090 |
Drive control method for linear oscillating motors and a linear oscillating motor
A method for driving a linear oscillating motor and a linear oscillating motor are provided. The motor includes a fixed magnetic member, a movable member having a magnet and being supported to...
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6150789 |
Stepper motor control
In a preferred embodiment, a stepper motor control, including: a driver to drive the stepper rotor; a detector to detect a commanded step rate signal provided to the driver and to provide an output...
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5872440 |
Oscillating mechanical device, in particular a card web comb for a textile machine, in which oscillations are sustained by means of a single-phase induction motor
The oscillating mechanical device comprises a shaft on which an oscillating member is mounted, and which is resiliently urged towards a middle angular equilibrium position, together with a...
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5274315 |
Card web comb driving system in machines for the textile industry
A card web comb driving system in machines for the textile industry comprng a comb structure (27) mounted in such a way as to oscillate around a resting position under the control of elastic means...
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5252903 |
Motor control circuit for autofocus unit
A motor control circuit for an autofocus unit which microsteps a stepping motor to turn a rotor and drive a focus lens, which circuit has a memory which stores data on current values of a plurality...
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5119071 |
Method and apparatus for controlling induction motor for compressor
DC power is supplied to an induction motor for a compressor by switching ON/OFF in response to a modulated voltage waveform obtained from modulating waves which are used for generating AC power for...
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5032778 |
Apparatus for controlling operating stroke of reciprocating member, using encoder signal
An apparatus for controlling an operating stroke of a reciprocating member to be reciprocated by a drive motor. The apparatus includes an encoder adapted to generate pulses each of which...
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4516062 |
Actuator
This invention is directed to an actuator which is particularly adapted among many other possible uses, or use in adjusting the configuration of deformable mirrors. The actuator comprises a housing...
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4300083 |
Constant amplitude controller and method
There is disclosed a constant amplitude controller with feedback control for a vibratory feeder apparatus wherein a controlled rectifier is used to rectify the A.C. line voltage applied to the...
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3959673 |
Oscillation motors
According to one feature a bearing-free oscillation motor, e.g. for driving an optical scanner or chopper comprises a torsion shaft fixed at one end for rotational oscillation about its axis, a...
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3626267 |
DIGITAL PHASE-CORRECTING SERVO FOR CONTROLLING THE PHASE OF AN ANALOG DRIVE SIGNAL
An analog drive signal for driving a vibrator, motor, or like driven apparatus, is converted to a digital signal and is delayed in a digital buffer memory. The memory is unloaded at two separate...
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3452259 |
MOVING COIL TRANSDUCER CONTROL SYSTEM
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3443179 |
RECIPROCATING MOTOR RATCHET AND PAWL REMOTE POSITION INDICATOR
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3379972 |
Non-contacting displacement gauge having a feedback means for controlling the vibration amplitude of the probe
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3181038 |
Control circuit for switching device
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3140433 |
Remote control rotary switch
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3091726 |
Generator for producing servomotor control-pulse trains
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3010059 |
Two way stepping servomotor control circuit
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2972093 |
Bidirectional stepping motor servosystem
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2862162 |
Force rebalancing servosystem
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2856564 |
Barium titanate crystals as a portable source of electric power
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2849670 |
Follow-up control system
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2848632 |
Spiraled magnetic field synchro
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2802978 |
Distant control device for rotatingly positioning a shaft on precise preset positions
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2509956 |
Power punch
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3721883 |
Title is not available
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0990285 |
Title is not available
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