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8071413 |
Micro-electro-mechanical system (MEMS) sensor and method for making same
The present invention discloses an MEMS sensor and a method for making the MEMS sensor. The MEMS sensor according to the present invention includes: a substrate including an opening; a suspended...
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8072169 |
Method of controlling washing machine and motor
A method of controlling a washing machine and a motor determines whether a BLDC motor is in a normal state in software without hardware and a user is notified of an abnormal state of the BLDC motor...
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8056411 |
Shaft balancing system and methods
A shaft assembly has a shaft body, a first universal joint coupled to a first end of the shaft body, and a second universal joint coupled to a second end of the shaft body. A method for dynamically...
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8056410 |
Method for predicting imbalance of a propeller shaft assembly
A method for determining an imbalance of a propeller shaft assembly can include establishing balancing planes relative to certain areas of the propeller shaft assembly and identifying each...
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8047061 |
Method and apparatus for real-time estimation of four wheel imbalances for chassis prognosis
A system and method for determining whether a particular wheel on a vehicle is un-balanced during operation of the vehicle. The method includes providing wheel angle signals from the wheels of the...
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7954376 |
Method and device for balancing a rotor of an electrical machine
A balancing device is provided that is able to balance a rotor of an electrical machine. The machine includes a mounted rotor in a central bore of a stator and coaxially thereto. Between the rotor...
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7946172 |
Device for mounting rotors, in particular articulated shafts, in a balancing machine
A device for mounting rotors, in particular articulated shafts, in a balancing machine has a bearing frame and a frame upper part, which is mounted on the bearing frame so as to be able to...
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7920973 |
System and method for converting clearance data into vibration data
Embodiments described herein generally relate to a method of measuring the vibration of an aircraft engine. One embodiment herein provides an engine monitoring system either connected to and/or...
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7912587 |
Method of balancing a gas turbine engine rotor
A method of balancing an assembly of rotary parts of a gas turbine engine comprising measuring at least one of the concentricity and parallelism of each component and considering globally all...
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7839304 |
Method and system for alerting aircrew to unsafe vibration levels
An onboard system for a rotary wing aircraft detects a limit cycle oscillation in the tail mast and provides a timely indication of the limit cycle oscillation to an aircrew before serious damage...
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7686403 |
Methods and systems for balancing spoked wheels using weight behind a single spoke
Methods and systems for reducing imbalance in a wheel assembly are provided. The method includes determining an imbalance characteristic associated with a first plane, determining an imbalance...
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7658107 |
Rotatably supporting device for correcting balance of rotating body
A rotatably supporting device for correcting balance of a rotating body includes a journal supporting part having a mandrel that rotatably supports the rotating body in a floating state about a...
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7654138 |
Method and device for dynamically measuring the unbalance of a rotor
Dynamically measuring the unbalance of a rotor arranged in a device housing (1) and rotating at high angular velocity, wherein the rotor is supported in a separate bearing housing (14), involves...
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7555939 |
Method for the modular balancing of a turbomachine rotor
A method of balancing a first turbomachine module (20), including along an axis of rotation a bearing plane (22) on one side and a junction plane (24) on the other, with respect to a rotor (1)...
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7426858 |
Method of balancing a suction unit comprising a ventilator and an electric motor
A method of manufacturing an electrical suction unit for use in a vacuum cleaner includes a turbine unit and an electrical motor with a rotor and a stator. The turbine unit is attached to the rotor...
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7424403 |
Low power vibration sensor and wireless transmitter system
A low power vibration sensor and wireless transmitter system has one or more sensors that sense parameters of a machine including vibration and produces dynamic signals representing the sensed...
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7321809 |
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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7275422 |
System for assembly of a rotating machine
In each work process of the assembly work of a large rotating machine, an input terminal unit 101 displays measuring points necessary for measurements of radial and axial clearances between a rotor...
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7272513 |
Optimal shaft balance using integer programing to handle discrete adjustment
Determining a shaft balance adjustment includes measuring an initial vibration of the shaft, determining if the initial vibration is greater than a predetermined value, and, if the initial...
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7234350 |
Unbalance measuring apparatus
A bearing 41 of a support portion 4 for rotatably supporting a shaft 11 of a rotating body 10 to be measured with respect to the magnitude of unbalance thereof is formed into a hollow U-shape and...
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7219036 |
Method for balancing an article for rotation
A method for statistically analyzing the operation of a machine for balancing articles for rotation so as to reduce measurement errors and thereby enhance productivity and quality including the...
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6976385 |
Lateral wheel balancing apparatuses and methods for lateral wheel balancing
Apparatuses and methods for laterally balancing a wheel or for determining the location for placing a balancing weight on the wheel for laterally balancing the wheel are provided. A method provided...
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6971154 |
Hard disk balancing apparatus and method for hard disk drive
A hard disk balancing apparatus for a hard disk drive including an eccentricity detection unit to detect an eccentricity amount and an eccentricity position of the hard disk with respect to a...
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6962080 |
Rotor balancing and drive shaft simulator therefor
A method of balancing a rotary device (12,14) for balanced rotational operation when connected to a drive shaft (24) by a flexible coupling (26,28). The method comprises the steps of connecting a...
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6950763 |
Optimal shaft balance using integer programming to handle discrete adjustment
Determining a shaft balance adjustment includes measuring an initial vibration of the shaft, determining if the initial vibration is greater than a predetermined value, and, if the initial...
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6763285 |
Adaptive compensation of sensor run-out and mass unbalance in magnetic bearing systems without changing rotor speed
The present invention provides a method and system for stabilizing a rotor about its geometric center in a magnetic bearing system at a constant rotor speed. In the method, the controller for...
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6757636 |
Computerized electronic runout
A system and method for measuring the radial runout of a shaft, rotatably supported on a standard rest, includes at least a first journal surface sensing assembly, a second journal surface sensing...
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6690533 |
Drive level actuator imbalance torque test
The present invention provides a method to determine and to locate the position of the imbalance torque of an actuator in a disc drive. There are several steps performing different functions in the...
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6676317 |
Rotor balancing structure, sheet material processing device, and image forming device
The drum has a balancer disposed at both ends of a drum body around which a printing plate is wound, and with a rotating shaft rotatably supported by a supporting plate via an elastic support...
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6671755 |
System for data capture from a rotor
A data capture system (1) has modular amplifier circuits (10) connected to modular capture circuits (11) within a rotor 2. Each capture circuit (11) has an FPGA (26) operation according to...
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6622551 |
Apparatus for balancing vehicle wheels
An apparatus for balancing vehicle wheels, comprising a machine frame 10, a main shaft 12 which is mounted rotatably in the machine frame 10 and on which a vehicle wheel to be balanced can be...
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6581444 |
Wheel balancing method
An automotive roadwheel is pre-balanced before a tire is mounted thereto. The wheel is balanced by applying a mass of ballasted adhesive to a protected surface of the wheel.
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6430992 |
Device for measuring the forces generated by a rotor Imbalance
A device for measuring forces generated by unbalance of a rotor, in particular a motor vehicle wheel, includes a stationary frame, an intermediate frame positioned radially within the stationary...
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6189372 |
Method for balancing a body of revolution
In the method for balancing a body of revolution using a balancing machine which comprises an adjustment means for positional resetting of compensation masses, firstly the compensation masses are...
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6189371 |
Method for adjusting rotation balance of disk and device for the same
The present invention provides a method and apparatus to adjust the rotation balance of a disk with high accuracy and ease during manufacturing. A disk is attached to a spindle to form a disk...
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6122957 |
Wheel-balancing method and device
The invention concerns a device for balancing a wheel comprising a rim and a tire. This device comprises a unit for measuring the wheel imbalance and a unit for scanning the rim dimensions. The...
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6094804 |
Balance correction station for a disc drive
An apparatus and method for automatically correcting the dynamic imbalance of a disc pack of a disc drive, the disc pack conveyed to a first selected position in a balance correction assembly...
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6082186 |
Adjustable balance weight
A balance weight includes a body having a mounting aperture for receiving a mounting pin, and a guide tab for engaging a complementary guide slot in a rotor. The rotor includes a spinner fixedly...
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5983168 |
Phase shift accommodation in active vibration damping system
An active vibration damping system (e.g. an active tuned mass damping system) uses phasor techniques for accommodating excessive phase shifts in system components (e.g. amplifier and actuators)....
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5831152 |
Wheel balancing machine
A wheel balancing machine that includes a lighting device to illuminate the inside of the wheel or rim bowl facing the wheel balancing machine. Illumination preferably occurs in an area above the...
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5824897 |
Blade static balancing fixture
The invention discloses a helicopter rotor blade static balancing fixture. First, the blade is rooted to provide a basis for accurate station or spanwise measurements. Then, weight information is...
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5773719 |
Fixture for locking motorcycle wheels onto a balancing machine shaft
A fixture for locking motorcycle wheels onto the shaft of balancing machines having a spindle coaxial to the shaft for supporting the wheel to be balanced, and members for making the shaft and the...
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5766501 |
Tire balancing
A method and composition of matter for balancing tire and rim assemblies of vehicles is disclosed wherein the composition of matter has rounded balancing elements of different sizes to line the...
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5661672 |
Process for mask irrelevant measured values in an unbalance measuring signal
A process masks non-relevant measured values in an unbalance signal consisting of a large number of individual measured values and a circuit arrangement determines the unbalance of a rotatable...
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5561242 |
Apparatus for locating wheelsets
An apparatus for locating the center of rotation of a wheelset. The apparatus contains two movable roller assemblies each designed to establish circumferential contact with a wheel at a different...
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5544073 |
Rotor balancing calculator
A portable, hand-held, battery-powered rotor balancing calculator has a data port, which includes a host communications port to down-load set-up data from, and upload collected data to a host...
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5537861 |
Method of balancing a bladed rotor
A method disclosed]for balancing the fan rotor (10) of a turbine engine having a hub (12) with blades (16) extending radially therefrom includes the steps of determining (30) a penalty associated...
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5461791 |
Apparatus and method for rotationally positioning a rotor
A method for rotationally positioning a rotor for balancing procedures uses an instrument within a housing that is temporarily mounted to the axial face of a rotor for determining rotational...
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5457992 |
Method for taking up clearance and providing a dynamic balancing of a transmission device, and device including its application
The invention relates to transmission devices comprising at least one joint and/or at least one sliding connection and more particularly concerns taking up clearances and providing a dynamic...
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5450337 |
Two-dimension unbalance correction device
A two-dimension unbalance correction device, or a two-dimension balancing apparatus, is designed to correct a rotor by resolving the measured unbalance vector into a horizontal component and a...
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