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| Number | Title | Issue Date |
| 8058828 | Compensating system and method for cogging torque of motor A compensating system for compensating a cogging torque of a motor includes a speed measuring apparatus, a moment of inertia measuring apparatus, a rotor position sensor, a processor, a plurality of band-pass filters, and a current control apparatus. The processor r... | 11/15/2011 |
| 7915842 | Actuator drive control device An active vibration isolation support system includes an electronic control unit which supplies a target electric current to an actuator to periodically drive the actuator in an expansion and contraction manner with a target vibration waveform. The controller sets t... | 03/29/2011 |
| 7414374 | Continuously variable frequency swinging armature motor and drive Disclosed herein is a power device. The power device has a power source; timing circuitry powered by the power source for producing a current pulse output having a pulse width; a switch for triggering the current pulse output produced by the timing circuitry; an arm... | 08/19/2008 |
| 7370829 | Method and system for controlling helicopter vibrations A method/system for controlling helicopter vibrations is provided that includes a vibration canceling force generator for actively generating a vibration canceling force. The system includes a resonant actuator having a natural resonant frequency and a resonant actu... | 05/13/2008 |
| 7352198 | Methods and apparatuses for improved stabilization in a probing system Improved methods and apparatuses for automatically and accurately maintaining the alignment of a wafer prober to the bonding pads of a semiconductor device in the presence of motion disturbances are provided. In one embodiment of one aspect of the invention, a feedb... | 04/01/2008 |
| 7340985 | Method and device for vibration control A device and method for vibration control in a machine for cutting, said machine comprising a cutting tool supported by a tool holder. The device comprises a control unit and converting means which are connectible to the control unit and comprise a vibration sensor ... | 03/11/2008 |
| 7315098 | Linear oscillator and electrically driven toothbrush A linear oscillator and an electric toothbrush capable of emitting a low noise and of being assembled compact are provided. The linear oscillator, which reciprocates a shaft in an axial direction thereof, includes a plunger movable together with the shaft in the axi... | 01/01/2008 |
| 7298101 | Continuously variable frequency swinging armature motor and drive Disclosed herein is a power device. The power device has a power source; timing circuitry powered by the power source for producing a current pulse output having a pulse width; a switch for triggering the current pulse output produced by the timing circuitry; an arm... | 11/20/2007 |
| 7288861 | Inertial actuator with multiple flexure stacks An inertial actuator for active vibration control utilizes a single cylindrical actuator module of the “voice coil” type. A moving armature assembly, including a soft iron shell with a tubular sleeve coaxially surrounding a core with two permanent magnets and co... | 10/30/2007 |
| 7259496 | Tunable vibratory actuator A tunable machining tool having a plurality of actuator devices, each operating at a uniform frequency but phase shifted by a controllable amount so as to create an vibratory output at a frequency that is a multiple of the input frequency. ... | 08/21/2007 |
| 7245049 | Vibrator and method for manufacturing the same A vibrator of the present invention comprises a coreless coil (2), a driver (4) including a magnet (4a) inserted in the coreless coil (2), a yoke (4b) for pinching the coreless coil (2) and facing the magnet ( | 07/17/2007 |
| 7243023 | Engine balancing system and method A method for balancing vibrations in a rotating machine is provided. The rotating machine has a first and a second plane of imbalance. The method includes determining a first set of solution mass vectors that includes a first solution mass vector for the first plane... | 07/10/2007 |
| 7234379 | Device and a method for preventing or reducing vibrations in a cutting tool An arrangement for reducing vibrations in a tool holder (4) with a cutting tool (3) and has a vibration sensor on the tool holder (4) that is connected to a guide unit (11). The tool holder (4) has further two piezo-electric actuat... | 06/26/2007 |
| 7215063 | Vibration element and vibration wave driving apparatus A vibration element for a vibration wave driving apparatus includes a first elastic member, a second elastic member, and an electro-mechanical energy conversion element disposed between the first and second elastic members. The electro-mechanical energy conversion e... | 05/08/2007 |
| 7195583 | Posture and exercise seating Seating that provides comfort, facilitates healthful upright posture, has capability for exercise, and facilitates a healthful upright position, comprises a seat having left and right portions for supporting a user's left and right thighs, respectively. A seat suppo... | 03/27/2007 |
| 7180254 | Method and apparatus for controlling an oscillating electric motor of a small electric appliance A method of controlling an oscillating electric motor of a small electric appliance, the method including supplying an electric current to a coil to produce a magnetic field emanating from a first motor component and setting a second motor component in an oscillator... | 02/20/2007 |
| 7170247 | Method of control of magnetic sound of alternating current rotating machine A method for greatly reducing magnetic sound of an alternating current rotating machine compared with the past comprising superimposing an n−1-th order frequency in inverse turn on a multi-phase alternating current with reference to a basic frequency component of ... | 01/30/2007 |
| 7165746 | Vibration motor primary flight control actuator The invention provides an actuator for a control surface (7), in particular for a primary flight control of an aircraft, the actuator including a main actuator (3) in a main control line (1) for actuating the control surface (7), the actu... | 01/23/2007 |
| 7154208 | 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 actuator constructed to apply an alternating voltage to an electro-m... | 12/26/2006 |
| 7150606 | Electromagnetic fuel pump An electromagnetic fuel pump, including a pump, an electronic control circuit board assembly (PCB) and electromagnetic coil operatively arranged to operate the pump, and, a housing arranged to house the pump and the PCB/coil assembly, the housing including an integr... | 12/19/2006 |
| 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 employs an accurate spring constant of the spring member correspondin... | 12/19/2006 |
| 7151359 | Variable reluctance generator A variable reluctance generator has phase windings and a bias winding. By controlling the excitation produced by the bias winding, the speed of the machine or the DC link, a power converter using only diodes can supply power to a DC bus. A method of operating a vari... | 12/19/2006 |
| 7129618 | Control apparatus capable of low-speed driving of vibration type driving apparatus, actuating apparatus using the control apparatus, control method capable of low-speed driving of vibration type driving apparatus, and storage medium storing program including program codes capable of realizing the control method A control apparatus and a control method for a vibration type driving apparatus are disclosed which can maintain output performance even when low-speed driving is continued for a long time. The vibration type driving apparatus comprises a vibrating body and an elect... | 10/31/2006 |
| 7113064 | Active device for damping the vibrations of a vibrating element An active device for damping vibration comprises an actuator comprising a magnetically permeable armature and a coil associated with a magnetically permeable yoke sliding along a displacement axis under the effect of a magnetic field generated by a current conveyed ... | 09/26/2006 |
| 7102258 | Manual electric generating device The present invention discloses a manual electric generating device, which comprises an upper casing, a lower casing; a rotor, a fixed stand, a hollow cylinder, a coil for generating power supply; and a printed circuit board for processing and outputting the power s... | 09/05/2006 |
| 7089823 | Vibratory mechanism controller A controller for use in a vibratory mechanism includes an amplitude control circuit that generates an amplitude control signal that varies from a minimum value to a maximum value. The vibratory mechanism is adapted to vibrate at an amplitude based on an amplitude co... | 08/15/2006 |
| 7064503 | Active noise compensation A method is for controlling a multi-phase electrical ship propulsion motor that is supplied with electric energy via a power converter. The ship propulsion motor is preferably a permanently excited motor with at least three windings. The phase currents flowing in th... | 06/20/2006 |
| 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 actuator constructed to apply an alternating voltage to an electro-m... | 06/13/2006 |
| 7050939 | Method and apparatus for evaluating automotive window regulators A method and apparatus for evaluating window regulators of the type having a reversible electric motor connected to a slide/carrier plate by means of cables. The apparatus comprises a first transducer such as a piezoelectric accelerometer or a laser for generating a... | 05/23/2006 |
| 7038332 | Power discriminating systems The present invention relates to a control system for selectively supplying electrical power in a remote environment. The system comprises a plurality of electrical circuits, each designed to operate over a unique frequency passband. Power transmitted within the fre... | 05/02/2006 |
| 7023112 | Vibrating device for axially vibrating a movable member A vibrating device has an axially elongated frame, and a vibrating assembly including a hollow yoke. A magnetic driving device is provided for axially vibrating the vibrating assembly. A supporting shaft is provided for axially slidably supporting the vibrating asse... | 04/04/2006 |
| 7013832 | Arrangement for damping of structural resonance A hull (11) has mounted thereon a number of accelerometers (20) arranged to provide a data signal corresponding to movement or vibration of the hull (11) to which each is fixed. The hull (11) and/or a thrust block (18) has mounted ... | 03/21/2006 |
| 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 vibrations easy. When a drive signal composed of a set of an accumulation sign... | 02/28/2006 |
| 7005810 | Motor driving apparatus An apparatus for driving a linear vibration motor that employs a proper motor thrust constant value corresponding to each linear vibration motor at position calculation for obtaining the position of the mover of the linear vibration motor, thereby increasing the acc... | 02/28/2006 |
| 7001154 | Apparatus for controlling a linear compressor and preventing the collision of a piston with a valve in the compressor Disclosed herein is an apparatus and method for controlling a linear compressor. The linear compressor control apparatus has a collision detection unit, a control unit, and a compressor driving unit. The collision detection unit detects a collision of a piston with ... | 02/21/2006 |
| 6977474 | Control system for a linear vibration motor A motor driving apparatus for driving a linear vibration motor includes an order output determining unit for determining a motor output which is required of the linear vibration motor, and a driving frequency determining unit for determining a driving frequency of t... | 12/20/2005 |
| 6963184 | Adaptable spatial notch filter A spatial notch filter is described that adapts in accordance with changes to an angular velocity of a rotating component within a manufacturing system. In a manufacturing system, noise may appear in feedback signals due to spatially distributed physical features in... | 11/08/2005 |
| 6954022 | Control apparatus for vibration type actuator Provided is a control device for a vibration type actuator having an elastic member fixed with an electro-mechanical energy conversion element, and a vibration member that generates a vibration on a surface of the elastic member by supplying a drive signal to the el... | 10/11/2005 |
| 6938889 | Shock absorbing and magnetic levitating cushion A shock absorbing and magnetic levitating cushion used as a supporting pedestal for an audio-video equipment, the cushion including a housing, two mutually excluded annular magnets, a magnetic conductive member and a cover. The housing has two annular magnets mutual... | 09/06/2005 |
| 6935611 | Motor control device for flow control device A motor control device for a flow control device includes an opening part through which an upstream side of a fluid flow passage is in communication with a downstream side of the fluid flow passage, a valve element that controls a flow of a fluid which passes throug... | 08/30/2005 |
