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WO/2009/139424A1 |
A target vibration level is determined in advance, and vibration occurring at a position where vibration is to be controlled is kept below the target vibration level. The device comprises a frequency detection means, which detects the fr...
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WO/2009/110331A1 |
Disclosed is a control system which can implement a CPG (Central Pattern Generator) network having an excellent controllability. The control system (1) (CPG network) is formed by a plurality of oscillation control devices 5i (CPG) and on...
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WO/2009/096806A1 |
A method of controlling operation of an ESP, comprising determining at least one operating speed (rpm) at which the ESP experiences unacceptable levels of lateral vibrations; and applying a periodic modulation to the operating speed when...
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WO/2009/094129A2 |
A method to adjust a modal property of a material removal tool without changing a projection length of the material removal tool is disclosed. Adjusting substantially aligns a characteristic frequency of the material removal tool with a ...
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WO/2009/073958A1 |
There is provided a method and a system for estimating parameters of a multi-tone signal made up of at least one single-tone signal, wherein the method comprises: generating time samples of the multi-tone signal by using a sampler; calcu...
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WO/2009/065808A1 |
The invention relates to a device for regulating the displacement of a load (15) suspended by cables from a carriage (10) which can move along at least one horizontal axis (X, Y) in a lifting apparatus. The regulating device (20) calcula...
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WO/2009/024537A1 |
The invention relates to a system for affecting vibration, particularly in the case of a vibration absorber or a force generator for reducing vibrations in aircraft and spacecraft. The energy needed to drive an actuator (4) is obtained e...
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WO/2008/138045A1 |
A device to effect optimum delivery of dry bulk material from a hopper including means to provide vibratory stimulus to the hopper, the said means including means to identify the resonant frequency of the hopper and its contents at any t...
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WO/2008/125141A1 |
The invention relates to a device having an electro-acoustic converter, having a main emission direction (R) for acoustic waves and comprising a first part (1) and a second part (4), with the first part (1) being displaceable relative to...
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WO/2008/110704A1 |
The invention relates to a method for balancing the movement of magnetised mobile masses (10, 20) in a bi-linear electrodynamic motor that comprises two mobile masses (0, 20) moving in opposite directions parallel to the axis (x-x) of th...
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WO/2008/066035A1 |
An acceleration/deceleration thrust power generated when an excitation side actuator (80) is driven is found. Based on the acceleration/deceleration thrust power, a seismic isolation side actuator (30) is so driven as to cancel a reactio...
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WO/2008/044712A1 |
A pressure regulator for controlling pressure with high response and high accuracy even a flow fluctuation occurs on the downstream side. The pressure regulator (1) regulates the rate of inflow into an isothermal pressure vessel (13) for...
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WO/2008/017494A2 |
Method for ultrasound excitation of structures of any geometry, comprising the steps of producing a connection between a generator, an ultrasound converter, and at least one mechanical system to be excited, passing through a frequency ra...
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WO/2007/147896A1 |
The present invention relates to an inertial measurement unit with enhanced acceleration withstand capability and is characterized in that it comprises at least five accelerometers (Acc1 to Acc5), the sensitive axes of which are placed a...
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WO/2007/147994A1 |
The method generates, by means of an actuator (1), a counter vibration (CV) to reduce or cancel the original vibrations and noises (V) at a given point in the cabin of the vehicle termed the control point (Pc), - the power plant itself i...
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WO/2007/129627A1 |
A damper for automobiles capable of producing good damping effect with a simple structure while ensuring high reliability. The damper is used for reducing the vibration of an automobile body and attached to the automobile body. The dampe...
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WO/2007/125663A1 |
A vibration oscillator comprises a spool valve and a pressure differentiator. In order to improve the dynamic characteristics of the spool valve in the dead band, the vibration isolator is so controlled that the feedback value of pressur...
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WO/2007/116254A1 |
An improved signal processing method and apparatus are presented for use in real-time sub-nanometer scale position measurements with the aid of probing sensors and/or beams scanning periodically undulating surfaces such as a grating and ...
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WO/2006/129612A1 |
In order to realize both the improvement in a disturbance suppression force of an electric motor control device and the vibration suppression of a load machine (2) by an easy adjustment, a speed control circuit (9a) inputs a speed comman...
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WO/2006/116271A2 |
A control system for a mechanical oscillator having a sinusoidal drive signal with a frequency that is a fractional multiple of a frequency of a signal of the mechanical oscillator. The drive signal may be in phase and in registration wi...
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WO/2006/081558A2 |
Apparatuses and methods for manipulating droplets on a printed circuit board (PCB) are disclosed. Droplets are actuated upon a printed circuit board substrate surface by the application of electrical potentials to electrodes defined on t...
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WO/2006/080257A1 |
A cantilever control device which, in an atomic force microscope, can prevent a cantilever self-excited oscillation from stopping and also prevent a cantilever probe from contacting an object of measurement. In an atomic force microscope...
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WO/2006/052210A1 |
Structural element, such as a panel, which is embossed with a mode shape (Φtotal), i-e. with any of the various stationary vibration modes (Φn) of which the structural element is capable, or a combination thereof.
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WO/2006/043455A1 |
[PROBLEMS] A pneumatic vibration removal system with a vibration removal device using pneumatic pressure, the system has high damping characteristics, has a wide damping frequency range, and has capability of changing the attitude of an ...
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WO/2006/021436A1 |
The invention relates to a method for guiding a strip between two opposite coils of a device which comprises a position sensor for determining the position of the strip between the coils. The first coil is impinged upon with a first curr...
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WO/2005/124475A1 |
There is provided a method for automatically setting a vibration suppression filter by a servo control device. When a vibration detector detects vibration [A2], a state amount frequency analyzer subjects data in the state amount trace un...
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WO/2005/098263A1 |
The aim of the invention is an improvement in the damping of resonant vibrations at the so-called Tool Centre Point, at which the tool and the workpiece come into contact in machine tools. Said aim is achieved, whereby the vibrations of ...
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WO/2005/073591A1 |
The invention relates to a gripping element wherein a mechanical element is maintained. Said gripping element can be embodied as a rigid gripping element or comprises at least two bearings, preferably a rigid bearing (2) and a moveable b...
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WO/2005/031186A2 |
An active vibration absorber is provided for absorbing vibrations in a member (21). An inertial mass (22) is mounted on the member with a stiffness (24) between the member and the mass. A force actuator arrangement (23) applies a force b...
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WO/2005/026859A1 |
Using a simple method that requires no special processings, a control apparatus automatically determines the vibration frequency so as to decide which filter is required and set the filter. A servo control apparatus for driving a servomo...
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WO/2004/077658A1 |
In a closed loop control method of a linear vibration actuator which vibrates linearly and energized by a switching element driven in a PWM control method, a crest or peak point (Bc, Bp) of the back electromotive force occurring in the l...
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WO/2004/030834A1 |
The invention relates to a machine, especially a machine for cleaning grain, for processing a product, especially grain, by means of a vibratable machine part which is coupled to the machine frame. The machine (KR) is embodied in such a ...
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WO/2004/025035A1 |
The present invention discloses a magnetic-driving initiative mass vibration control system comprising a control device, a track and a block of mass the bottom of which is provided with a DC energizing coil as the secondary pole of a VCM...
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WO/2003/089805A2 |
A collision energy-absorbing device includes a body member connected between the frame assembly of a motor vehicle and a bumper beam. The body member collapses as the bumper beam and the frame assembly are moved relatively toward one ano...
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WO/2003/076823A1 |
An oscillation adjuster, excited by the dynamic unbalance or eccentricity of a rotator connected to a rotary electric machine, which suppresses an oscillation occurring in a drive target, satisfies a device function, and enables a reduct...
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WO/2003/069733A1 |
A vibration reducing system includes a position control dive (65) and a vibration control drive (45). At least one position sensor (60) is used to provide feedback signals which are in turn unses to provide control signals fore both the ...
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WO/2003/065142A1 |
Selective damping apparatus comprises at least one sensor (7) for detecting, and producing signals indicative of at least the frequency and amplitude of vibrations of a first structural component ('the resonant structure') (6) having one...
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WO/2003/065781A1 |
A novel electronics cooling method and system is disclosed. A very flexible and efficient operation of an electronics cooling system (10) is achieved by controlling circulation of a cooling medium in a closed system (40) containing an ev...
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WO/2003/023541A2 |
The invention relates to a method for securing data communication via WAN, LAN (e.g. internet) between at least one external access unit (8) and a field device (1; 2; 3; 4) or a field bus adapter (7) for determining or monitoring at leas...
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WO2002073318A9 |
A vibration control system comprising an actuator, and a sensor useful for controlling vibrations in systems for fabricating electronics equipment. The actuator may comprise one or more plates or elements of electroactive material bonded...
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WO2002042854A9 |
Vibration suppression, isolation, and control in machines, devices, and structures is provided using active vibration control by confinement (AVCC). Vibrational energy is confined to sepecified regions to reduce or amplify the energy. An...
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WO/2002/069319A1 |
A method and system that reduces undesired vibration in a vehicle measures ambient vibration and generates a first command signal based upon said vibration measured in said step a. If a first component of the first command signal exceeds...
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WO/2002/053964A1 |
A multi-sensor (32, 34, 36, 42, 44), multi-actuator (74, 76) control system for controlling vibration in a mechanical structure. The system employs feedforward and feedback control strategies in tandem. Outputs from adaptive feedforward ...
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WO/2002/006700A1 |
A vibration isolating device capable of stably supporting a vibration isolating table to surely insulate a vibration-protected device from an external vibration, comprising a the vibration isolating table (10), magnetic levitating device...
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WO/2001/084893A1 |
Piezoelectric wafers (104, 106) are affixed to a circuit card (102) to control displacement of the circuit card (102) when vibrated. A trigger wafer (110) located at an anti-node of the dominant mode shape produces a voltage as a functio...
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WO/2001/073516A1 |
This invention provides an aircraft control system having: means (12) for detecting an irregularity in aircraft handling during flight; means (18) for causing temporarily a rigid body excitation in at least a portion of the aircraft; mea...
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WO/2001/014944A1 |
The invention aims at damping torsional vibrations of an internal combustion engine, said vibrations being compensated according to the learned principle of disturbance variable compensation. To this end, a torque disturbance variable (M...
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WO/2001/011944A1 |
A reticulation controller for controlling watering of gardens and lawns is disclosed, which is easy to program. The reticulation controller has a microprocessor (23) interfaced to triacs (25-29) to control valves to control flow of water...
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WO/2000/049309A2 |
A vibration and noise canceling system includes an electromagnetic vibration canceling actuator (21) and an electronic control system (16). The vibration canceling actuator (21) includes a permanent magnet (6) in proximity with a flux co...
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WO/2000/045067A1 |
A vibration control system comprising an actuator, and a sensor useful for controlling vibrations in systems for fabricating electronics equipment. The actuator may comprise one or more plates or elements of electroactive material bonded...
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