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7638958 |
Powered surgical tool with control module that contains a sensor for remotely monitoring the tool power generating unit
A powered surgical tool with a housing that contains a power generating unit such as a motor. A control module is disposed in a shell that is mounted in the housing. The control module contains a...
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RE41035 |
Magnetic bearing device with vibration restraining function, magnetic bearing device with vibration estimating function, and pump device with the magnetic bearing devices mounted thereto
Disclosed are a magnetic bearing device with a vibration restraining function, a magnetic bearing device with a vibration estimating function, and a pump device with the magnetic bearing devices...
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7553295 |
Liquid infusion apparatus
Liquid infusion apparatus includes non-magnetic materials in a pumping structure and ultrasonic drive motor therefor, and in a controller that supplies drive signals to the motor to facilitate...
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7493931 |
Vibrating tile setting tool
A light weight vibrating tile setting tool, optionally having a self-contained power supply, vibrates at high frequency while setting/leveling tiles during a tile installation process. The tool...
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7468588 |
Apparatus and method for controlling operation of reciprocating compressor
The present invention relates to an apparatus and method for controlling operation of a reciprocating compressor. The operating efficiency of the compressor can be improved by performing the steps...
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7385362 |
Method for driving a vibrating device for a portable object that comprises a coil and a moving mass
The drive method consists in setting in vibration a moving mass of a vibrating device for a portable object using a series of voltage pulses provided to the coil of the vibrating device, which is...
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7358691 |
Vibration device
A vibration device comprises a motor having a stator and a rotor each having one or more magnetic elements. A magnetic element on at least one of the rotor and the stator comprises an electromagnet...
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7298100 |
Driving apparatus for vibration type actuator and driving method for vibration type actuator
A driving apparatus for a vibration type actuator is disclosed, which can boost the power source voltage and can reduce the cost and the size of the apparatus. The driving apparatus comprises an...
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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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7265506 |
Noise improved linear DC motor control systems and methods
A linear power controller and related circuitry may be implemented to provide linear control of a variable DC electric motor. The controller and motor are coupled to form a closed loop for...
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7253576 |
E/I core actuator commutation formula and control method
A stage assembly ( 220 ) for moving a device ( 200 ) includes a stage ( 208 ), and actuator pair ( 226 ) and a control system ( 224 ). The actuator pair ( 226 ) includes a first actuator ( 228 )...
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7235936 |
Linear vibration motor
A linear vibration motor comprises: a stator provided with one of a permanent magnet and an electromagnet including a winding; a vibrator provided with the other of the permanent magnet and the...
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7151348 |
Motor driving apparatus
A motor driving apparatus for driving a linear vibration motor having a spring member that supports a mover so as to form a spring vibration system including the mover. The motor driving apparatus...
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7148636 |
Motor drive control apparatus
A motor drive control apparatus for driving and controlling a linear vibration motor having a mover supported by a spring, with an AC current. The motor drive control apparatus includes a waveform...
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7112931 |
Motor control device and motor control method
An inverter supply voltage generator comprises an inverter supply voltage computing unit 10 , a voltage converter 11 and a battery 12 . The inverter supply voltage generator varies inverter...
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7061156 |
Control apparatus for vibration type actuator
The present invention relates to apparatus achieving improvement in operation characteristics in the operation of stopping or reversing the direction of or decelerating movement of a vibrating wave...
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7005811 |
Bodily sensed vibration generator system
A vibration generator system is capable of generating vibrations of a frequency that can be bodily sensed by humans, notwithstanding a small size, and making setting of a configuration of...
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6987345 |
Vibration type actuator drive controller and method of controlling drive speed of vibration type actuator
This disclosure relates to a technique for smoothly carrying out an acceleration operation and a deceleration operation for a vibration type actuator to prevent a situation where in starting the...
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6917861 |
Method and apparatus for stepping space craft mechanisms at low disturbance rates
A method and system for reducing the stepping disturbances generated by a stepping mechanism is disclosed. The method is to select a desired stepping rate to step the stepping mechanism. The method...
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6911791 |
Method and device for the reduction of load cycle oscillations in the drive train of a motor vehicle
Load cycle oscillations in the drive train of a motor vehicle are reduced by detecting a change in available torque in the drive train, determining the period of a load cycle oscillation, and, at...
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6894449 |
Vibration control device, stage device and exposure apparatus
In order to remove vibration or improve a vibration control effect, and achieve device size reduction, an adjusting device is provided in which a weight of a support target object is supported by a...
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6864647 |
Linear motor
The present invention provides an improved design of linear motor as well as an improved control strategy. The design allows for a shorted stator, where the armature magnets are controlled to...
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6822406 |
Brushless motor driving circuit and portable terminal incorporating the same
A brushless motor-driving circuit is disclosed which includes an initializing element setting an initial rotating speed, an oscillating element for generating a frequency corresponding to the...
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6806606 |
Magnetic bearing device with vibration restraining function, magnetic bearing device with vibration estimating function, and pump device with the magnetic bearing devices mounted thereto
Disclosed are a magnetic bearing device with a vibration restraining function, a magnetic bearing device with a vibration estimating function, and a pump device with the magnetic bearing devices...
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6777895 |
Vibrating linear actuator
A vibrating linear actuator includes a mover having a permanent magnet, a stator having coils, a base on which the stator is mounted, a cover, and lands electrically coupled to the coils. The lands...
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6765357 |
Impact tool control method and apparatus and impact tool using the same
An impact tool control method and apparatus and an impact tool using the same. Pulses of torque applied to a fastener by the impact tool are measured. The duration and magnitude of the torque pulse...
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6750621 |
Method and system for non-contact sensing of motion of a roller drum
The present invention discloses a system for non-contact measurement of vibrational motion in a vibratory compacting machine. The system includes a vibrating element such as a roller drum adapted...
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6744227 |
Vibration type actuator apparatus
The present invention relates to a vibration type actuator apparatus, and is aimed to provide an apparatus capable of determining a phase with which a driving voltage is applied to a piezo-electric...
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6731083 |
Flux feedback control system
An electrical machine includes a rotor, a stator operably coupled with the rotor, at least one phase winding operably coupled with the rotor and stator and arranged to establish flux in a magnetic...
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6720746 |
Method and regulating system for damping the torque oscillations of the drive train of an electrically driven road vehicle
In the present method for damping the torque oscillations of the drive train of an electrically driven road vehicle, the torque or a torque estimated value and the rotational speed of the electric...
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6717379 |
Device for generating mechanical vibration
The invention concerns a device where creation of mechanical vibration is made with a system ( 1 ) of two or more rotating eccentrics ( 10 ). Each eccentric ( 10 ) is rotated by an individually...
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6700338 |
Tubular acoustic pressure wave generator
A pressure wave generator comprises an acoustic tube 1, and a driving device 3 connected to one end of the tube for generating acoustic waves toward the interior of the tube 1. A plurality of...
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6694238 |
Electric power steering apparatus
An electric power steering apparatus for assisting steering by conferring torque generated by an electric motor to a steering mechanism. The apparatus includes: a correction table created based on...
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6680590 |
Vibration motor and apparatus using the same
A vibration motor obtains a FAST signal when r.p.m. of the motor is faster than reference speed, whereby an output-driving circuit is controlled by the FAST signal to omit parts of the powering...
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6680591 |
Apparatus for phase angle monitoring of a plurality of vibrating machines
A phase angle monitoring apparatus for phase monitoring a vibratory system includes a controller that produces a phase angle control signal representative of the lead or lag between the vibratory...
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6661189 |
Method and apparatus for controlling electromagnetic parts feeder
An apparatus for controlling an electromagnetic parts feeder comprises a vibrating unit provided with an electromagnet that vibrates at a predetermined frequency, a bowl adapted to discharge parts...
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6636007 |
DC brushless vibration motor
A DC brushless vibration motor is disclosed to comprise of a stator, a rotor, a drive circuit and a casing. The stator has an upper magnetic pole piece, a lower magnetic pole piece and a stator...
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6621241 |
System and method for reducing oscillating tool-induced reaction forces
A system and method for reducing reaction forces induced in a machine frame by an oscillating tool employs a counterforce assembly which is driven to move along linear slides mounted to the machine...
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6617754 |
Circuit for the dynamic control of ceramic solid-state actuators
The invention relates to a circuit arrangement for the dynamic control of ceramic solid-state actuators, such as piezotranslators with energy recovery by means of magnetic intermediate stores...
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6608455 |
Driving apparatus for vibration type motor and vibration type motor driving control method
A driving apparatus is provided for a vibration type motor which obtains a driving force by applying a periodic signal to an electro-mechanical energy conversion element portion of the vibration...
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6593712 |
Drive control device of vibration wave motor
The present invention relates to a vibration wave motor which is configured to prevent abnormal noise from being produced at a start time or a stop time and, more particularly, to a control device...
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6570298 |
Vibration control device and driving method thereof
A vibration control device 1 in accordance with the present invention is provided with a liquid lever mechanism 4 which has an action member 5 , a liquid chamber 6 and a driving plate 7 ,...
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6548971 |
Dual sided self-oscillation circuit for driving an oscillatory actuator
A dual sided self-oscillation circuit for driving an oscillatory actuator with high efficiency and high response speed. The actuator has a winding to receive a periodical supply current from a...
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6538401 |
Adaptive shunt system for vibration control of structures and operating method of the same
An adaptive shunt system for controlling vibrations of a frequency-varying structure, the system comprising: a detector for detecting vibrations generated from a predetermined structure and...
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6504278 |
Regulating device for adjusting the static moment resulting from unbalanced mass vibration generators
The invention relates to a regulating device for an unbalanced mass vibration generator, comprising at least two pairs of partial unbalanced mass bodies that can be driven around an allocated axis...
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6448673 |
Controlled high speed reciprocating angular motion actuator
A reciprocating rotary action actuator consisting of a rotor and stator that can be added to a bi-directional rotary motor or galvanometer scanner, where the stator has a ring magnet and a pair of...
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6445149 |
Vibrator controlling method and vibrator
A reference pulse signal P is produced which is synchronized in frequency with a pulse signal S derived from a vibration source and has a predetermined duty ratio. Then, a control signal C is...
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6441571 |
Vibrating linear actuator and method of operating same
Vibrating linear actuator and method of operating same. The actuator of the invention includes a stator, a spring vibration system having a moving portion with a magnet and further having a spring...
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6429610 |
Method and system for reducing motor vibration by controlling flux producing current
The flux producing current limit of the motor control is adjusted to control the vibration of a motor. The flux producing current may be profiled in relation to the speed of the motor to compensate...
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6414452 |
Waveform control device for vibrating tables and method thereof
A waveform control unit of a vibrating table comprises: an off-line compensation wave generator which generates an off-line compensation wave on the basis of the inverse characteristic of the...
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