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7627441 |
Process device with vibration based diagnostics
An process device for use in an industrial process control or monitoring system is configured to couple to a process. A vibration sensor is configured to sense vibrations. Diagnostic circuitry...
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7613540 |
Method and system for vibration avoidance for automated machinery
A method for vibration avoidance in automated machinery produces actuator space-time contours that meet design objectives of the machinery while suppressing energy content at frequencies in the...
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7596428 |
Methods and apparatuses for monitoring steam turbine valve assemblies
The present application provides for apparatuses and methods for monitoring steam turbine valve assemblies. In one embodiment of the present application a method for monitoring valve assemblies is...
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7596795 |
Vibration compensation based on identification of vibration frequency
A shock detection circuit housed in an electronic device includes an output shock signal that is indicative of vibration amplitude. To compensate for vibrations that are experienced by the...
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7567857 |
Control device and method for a vibratory machine
This invention relates to a control unit for an unbalanced mass adjusting device in a vibration generator, in particular in a soil compaction machine, having an adjusting cylinder which is...
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7565226 |
Determining operating fan speed for systems containing disk drives to minimize vibrational impact
A method and an apparatus for determining cooling fan speeds that should be avoided to prevent vibational resonance with system enclosures, given ambient conditions, and/or current geographic...
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7551978 |
System for carrying an item
The item-carrying system comprises: a robot comprising: a gripping portion for gripping an item; external force detecting means for detecting an external force applied to the gripping portion;...
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7532951 |
Method of automatically setting vibration suppression filter
A filter is set by a control apparatus automatically detecting a vibration frequency and determining a filter to be needed, in a simple method that does not require a special process. A servo...
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7519439 |
Efficient digital processor for feedback control applications
A digital processor ( 2, 102 ) for use in a digital controller ( 10 ) is disclosed. The digital processor ( 2, 102 ) includes a coefficient product memory ( 22 ) that stores previously calculated...
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7501783 |
Method of automatically setting vibration suppression filter and automatic setting apparatus for vibration suppression filter
In a method of automatically setting the vibration suppression filter, when a vibration detection portion detects a vibration A 2 , a state variable frequency analysis portion analyzes the...
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7492675 |
Digital servo system with calibrated notch filters
A system which calibrates notch filters in a digital servo system is presented. A notch filter can be calibrated by obtaining a frequency response curve of the digital servo system in a range of...
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7489987 |
Control of an active vibration isolation system
Control of an active vibration isolation system with a digital controller, which includes an FPGA system ( 5 ) as the control unit. The FPGA system ( 5 ) is made up of freely programmable gate...
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7426426 |
System and method for simultaneously controlling spectrum and kurtosis of a random vibration
A system and method for producing and controlling a random signal with simultaneous control of both the power spectral density (PSD) and kurtosis ( 100 ) where a controlled signal is measured from...
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7409268 |
Method for actuating active vibration insulators
A method for actuating active vibration insulators includes the steps of generating an idling control signal in an idling range of a vehicle, generating a running control signal in a running range...
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7409269 |
Methods of analyzing the vibro-acoustic optimization potential and optimizing the vibro-acoustic behavior of a structure
A method of analyzing the vibro-acoustic optimization potential of a structure of vibro-acoustically coupled subsystems having internal and coupling loss factors by means of statistical energy...
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7400943 |
Methods and systems for analyzing engine unbalance conditions
Methods and systems for analyzing engine unbalance conditions are disclosed. In one embodiment, a method includes receiving vibrational data from a plurality of locations distributed over an engine...
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7387017 |
Digital Q control for enhanced measurement capability in cantilever-based instruments
A digital system for controlling the quality factor in a resonant device. The resonant device can be any mechanically driven resonant device, but more particularly can be a device that includes a...
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7381017 |
Detecting and suppressing methods for milling tool chatter
A detecting and suppressing control method for milling tool chatter. Milling parameters are defined. A milling device is initiated using the milling parameters. Milling signals are extracted using...
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7270007 |
Apparatus and method for reducing vibration
A method of reducing vibration in equipment having first and second mechanically connected subassemblies is disclosed. A sensor is disposed on the first subassembly. A vibration from the sensor is...
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7224807 |
System for computationally efficient active control of tonal sound or vibration
A noise or vibration control system reduces a sampling rate and reduces a control rate to improve computation efficiency. The present invention permits the use of a sample frequency (f s ) that is...
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7216018 |
Active control vibration isolation using dynamic manifold
A controller f or multi-DOF active vibration isolation accounts for plant uncertainties and payload disturbances using dynamic frequency-shaped sliding control. Modal decomposition rewrites a...
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7165445 |
Digital control of quality factor in resonant systems including cantilever based instruments
A digital system for controlling the quality factor in a resonant device. The resonant device can be any mechanically driven resonant device, but more particularly can be a device that includes a...
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7107127 |
Computationally efficient means for optimal control with control constraints
A method and system that reduces undesired vibration in a vehicle measures ambient vibration and generates a first command signal based upon the measured vibration. If a first component of the...
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7069114 |
Anti-vibration technique
A supporting apparatus includes a supporting member configured to support a movable member, an acceleration sensor configured to detect acceleration of the supporting member, an actuator configured...
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7062357 |
Multiple region convolver with tapering
A multiple region convolver includes tapering between successive models of a physical system. The tapering is performed during a transition period.
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7047109 |
Machinery for improving performance irregularities arising from vibrations
A machinery is disclosed that comprises a movable body that moves linearly with respect to a main body and an active damper for controlling an inherent vibration of the movable body occurred in a...
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7035718 |
Method and System for detecting and reducing draft tube pressure fluctuations
A method and system to reduce vibration in a turbine-generator including measuring a magnitude of radial vibration of a turbine shaft with at least one vibration sensor configured to generate a...
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7031799 |
Control structure for the active damping of low-frequency oscillations in numerically controlled machine tools
A control structure for the active damping of low-frequency oscillations in numerically-controlled machine tools. The control structure includes an rpm regulator having a proportional component and...
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7003380 |
System for computationally efficient adaptation of active control of sound or vibration
In a method for reducing sensed physical variables generating a plurality of control commands are generated at a control rate as a function of the sensed physical variables. An estimate of a...
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6996506 |
Process and device for displacing a moveable unit on a base
A Process and device for displacing a moveable unit on a base. The process includes: a) a force (F) is determined which, applied to the moveable unit ( 4 ), produces a combined effect, on the one...
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6920378 |
Command generation combining input shaping and smooth baseline functions
One preferred embodiment of the invention provides systems and methods for controlling a physical system by generating an input to the physical system that does not excite unwanted dynamics....
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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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6856920 |
Adaptation performance improvements for active control of sound or vibration
A noise or vibration control system improves the quality of adaptation estimates by filtering the input signals to the adaptation, selectively implementing a “dead-zone” during which adaptation...
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6832973 |
System for active noise reduction
An apparatus and method to minimize acoustic vibration in a vehicle due to impulsive gear clash loads. Sensors are mounted on the vehicle and are used to sense vehicle vibration generated by the...
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6832119 |
Methods and systems for torque ripple compensation
A method for compensating for torque ripple in pulse width modulated machines including providing damping for transient disturbances utilizing a fixed feedback controller and rejecting steady...
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6823233 |
Numerical controlling unit
A numerical controlling unit that accelerates or decelerates a feeder-driving system includes; an acceleration setting part that can set a volume and a timing of an acceleration that should be...
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6810302 |
Process and methodology for selecting cutting parameters for titanium
A method of predicting the cutting speed for machining of titanium alloy comprising the steps of obtaining a first transfer function for a tool system, obtaining a second transfer function for a...
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6751602 |
Neural net controller for noise and vibration reduction
Two neural networks are used to control adaptively a vibration and noise-producing plant. The first neural network, the emulator, models the complex, nonlinear output of the plant with respect to...
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6728580 |
Method and apparatus for estimating time to failure acceleration factor
An apparatus for estimating the time to failure acceleration factor of a large industrial motor includes a sensor, a clock for controlling sensor sampling times, and a memory address calculator for...
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6728327 |
Lower-jitter phase-locked loop
A circuit combines the outputs of two or more phase locked loops to reduce jitter to a level below that of an individual phase locked loop. A digital version of the circuit uses a majority function...
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6725129 |
Positioning device and method
A positioning device and method can position a subject of positioning at a higher speed than conventional ones. A positioning device and method for moving a subject of positioning to a desired...
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6697682 |
Adaptive control apparatus and shaking table
A shaking table having: a feedback controller for generating a drive signal for actuators so that an inputted second command signal is agreed with a response signal indicating a vibration state of...
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6684132 |
Active anti-vibration apparatus and exposure apparatus
This invention relates to an active anti-vibration apparatus having an anti-vibration table on which a stage is mounted. This anti-vibration apparatus includes a pneumatic spring actuator for...
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6681152 |
Predictive active compensation systems
There is disclosed multiple embodiments of a predictive active compensation system for dampening vibration in an optimum manner employing feedback control wherein stiffness of dampening material is...
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6665589 |
Method for steam turbine halfshell alignment
A method for predicting an amount of distortion experienced by turbine components due to the replacement of an upper turbine portion, such as an upper casing, is disclosed. In an exemplary...
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6658326 |
Noise reduction system and method
A noise reduction system reduces noise associated with an input signal provided to a control system, while substantially minimizing the adverse affect on the responsiveness and stability of the...
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6546316 |
Two dimensional network of actuators for the control of damping vibrations
An interconnected distributed network of actuator devices for the control of damping vibrations in mechanical structures. The network includes at least two actuators and at least two impedances...
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6529838 |
Method of and apparatus for predicting vehicle interior noise
A jig is successively mounted on each of the four wheels of a vehicle. The jig is struck in three orthogonal directions independently, and at the same time, a microphone inside the vehicle measures...
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6487524 |
Methods and apparatus for designing a system using the tensor convolution block toeplitz-preconditioned conjugate gradient (TCBT-PCG) method
Systems and methods for designing or determining parameters for a system are disclosed. These systems and methods exploit the Tensor Convolution Block Toeplitz (TCBT) structure involved in certain...
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6459970 |
Control data setting method and data storage medium of active mount control apparatus
Control data such as an optimal filter coefficient or the like of an engine mount is obtained by adaptation control or the like with respect to a reference vehicle F provided with a reference...
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