Abstract: The invention relates to a balancing machine for measuring the rotating unbalance of a tool holder in two different clampings, comprising a spindle which can be set into rotation. The spindle comprises an automatically actuatable coupling, by which the tool holder can be coupled rigidly to the spindle in a first position in order to rotate with the spindle around the rotational axis of the tool holder and the tool holder can be coupled rigidly to the spindle in a second position in order to rotate with the spindle around the rotational axis of the tool holder. The balancing machine also comprises at least one measuring sensor for determining the rotating unbalance of the tool holder rotating in the spindle unit, wherein the device has a brake which retains the tool holder.

Abstract: An imbalance measurement machine for determining tire imbalance has a hollow shaft rotatably driven relative to a fixed hollow axle. A tubular air feed for filling the tire with air is centered within and rotates with the shaft to rotate the tire for determining imbalance. An air hose is connected to a rotational coupling disposed at an air feed end that faces away from the tire. Force transducers between the axle and a machine bed measure forces that occur there during operation. The air hose is attached not only to the rotational coupling but also to the axle, at a distance from the rotational coupling. An alternative embodiment omits the rotational coupling and fills the tire in the resting state of the shaft, via the air hose and the non-rotating air feed. Subsequently, the air hose is separated from the air feed, and the tire retains the supplied air.

Abstract: A method for efficiently operating a vehicle wheel balancing system having a wheel mounting structure upon which a vehicle wheel assembly is mounted for rotation during a measurement or service procedure, and a load roller assembly disposed in operative proximity to the wheel mounting structure for engaging a surface of the vehicle wheel assembly and applying a controlled load there to during rotation. After mounting a vehicle wheel assembly to the mounting structure, the wheel assembly is rotationally driven and a measurement of imbalance is initially acquired and the results displayed to an operator. Subsequently, the load roller assembly is engaged with the still rotating wheel, while measurements of radial forces and/or runout of the wheel are acquired, before the wheel rotation is stopped.

Abstract: A balancing device, a uniformity device and an apparatus including the balancing device and the uniformity device are disclosed. Each of the balancing device and the uniformity device includes at least one multi-axis transducer. Methods are also disclosed.

Abstract: A device for measuring forces generated by an unbalance of a rotor, said device comprising a stationary frame, a first bearing, measuring shaft mounted rotatably about its shaft axis in the first bearing, a mounting means provided on the measuring shaft designed for attachment of the rotor, wherein the rotor is designed to be balanced in at least one compensating plane, a second bearing pivotally supporting the first bearing about a pivot axis which intersects the shaft axis and being supported on the stationary frame, a first force sensor for measuring forces generated by the unbalance of the rotating rotor and acting about the pivot axis, and a second force sensor for measuring forces generated by the unbalance of the rotating rotor and acting on the measuring shaft and on the second bearing in a direction intersecting the shaft axis.

Abstract: Apparatus including a wheel balancing device and a tire changing device, comprising a spindle shaft for rotatably supporting a vehicle wheel or rim, unbalance measuring means operatively connected to the spindle shaft and having a spatial unbalance measuring area in which unbalance forces of the wheel or rim are detected, tire changer tools for assembling a tire onto a rim, spindle supporting means supporting the spindle shaft in a force acting range in which forces are created between the tire changer tools and the tire during the assembling or disassembling of the tire, tool supporting means supporting the tire changer tools within the force acting range which is arranged outside of the spatial unbalance measuring area, and drive means driving the spindle shaft with a rotational speed and torque adapted for assembling and disassembling the tire or for measuring unbalance forces of the wheel or rim.

Abstract: A balancing device includes an active balancing mechanism. The active balancing mechanism maintains the balancing device in an actively balanced state within a range of the active balancing mechanism. An auxiliary balancing mechanism is configured to support the balancing device in an unbalanced state that is outside the range of the active balancing mechanism and aid a transition of the balancing device to the actively balanced state that is within the range of the active balancing mechanism, wherein the auxiliary balancing mechanism is configured to support the balancing device includes to prop up the balancing device.

Abstract: A method of dynamically balancing a shaft for multiple rotational speeds comprising: rotating the shaft in the balancer at a first rotational speed while measuring a first force and a first angle of a first shaft imbalance measurement; rotating the shaft at a predetermined second rotational speed while measuring a second force and a second angle of a second shaft imbalance measurement; comparing the first shaft imbalance measurement to a first predetermined imbalance specification and comparing the second shaft imbalance measurement to a second predetermined imbalance specification; if the first shaft imbalance does not meet the first predetermined imbalance specification or the second shaft imbalance does not meet the second predetermined imbalance specification, then calculating a composite correction based on the first and second shaft imbalance measurements; and applying a first weight to the shaft at a correction first angle based on the calculated composite correction.

Abstract: Systems and methods for detecting an out of balance condition for a washing machine are disclosed. The wash basket of the washing machine is rotated at a constant predetermined rotational speed. If the washing machine has an unbalanced load, the wash tub will strike the cabinet as the basket rotates in the wash tub. The tub strikes cause the wash basket to lose momentum. The inverter drive control system causes the inverter to provide more current through the motor phases to the motor to maintain constant speed. From the value of the current, the severity of the tub strikes during a test period can be determined. An out of balance condition can be detected and measured based at least in part on the severity of the tub strikes.

Abstract: Disclosed is a drive shaft balancing machine (10) for the dynamic balancing of drive shafts, comprising two pedestals (13), each pedestal including an upper part (17) mounted on springs (19, 20) and receiving a rotary spindle (21), a support for receiving an end of a drive shaft (W) to be balanced and a first vibration sensor (26) which detects vibrations of the upper part resulting from an unbalance of the drive shaft (W) as well as further involved forces in at least a first degree of freedom of motion normal to the spindle axis, wherein the upper part (17) of at least one pedestal (13) mounts a second vibration sensor (29) which detects the vibrations of the upper part in at least a second degree of freedom of motion, and wherein the vibration signals of the first and the second vibration sensor (26, 29) are fed to an evaluating circuit which analyzes the vibration signals and links them in such a way that pitch vibration excitations of the upper part (17), which are not caused by the unbalance of the driv

Abstract: An apparatus (1) for mounting and removing a tire (2) on and from a respective rim (3) comprises: a movement element (9) for moving a bead (2a) of the tire (2) in order to insert/remove the bead (2a) into/from a respective groove in the rim (3); means (4) for supporting and moving the rim (3), designed to rotationally drive the rim about its longitudinal axis; characterized in that the means (4) for supporting and moving the rim (3) comprise a sensor (252) for measuring the mechanical strain applied to the supporting and movement means (4) as a result of the mechanical stress on the bead (2a) of the tire (2) during mounting/removal of the latter on/from the rim (3).

Abstract: A vehicle wheel balancer system having a processing system and a spindle shaft upon which a vehicle wheel assembly is mounted for measurement of imbalance characteristics and forces. The processing system is configured with software instructions to evaluate the remaining imbalance present in a vehicle wheel assembly following the application of imbalance correction weights, and to determine if the remaining imbalance is the result of the vehicle wheel assembly having deviated from an expected rotational position during the time between the measurement of the imbalance and the application of the imbalance correction weights. In the event of such a deviation, the processing system is further configured to provide the operator with a suitable warning to evaluate and correct the mounting of the vehicle wheel assembly before proceeding to rebalance or re-measure the vehicle wheel assembly.

Abstract: A method and an apparatus for determining rotary angle related measurement data of a body mounted rotatable about an axis of rotation, the body being a vehicle wheel or a part of a vehicle wheel, in particular a tyre or a rim, the method comprising the steps of obtaining measurement data comprising a plurality of measurement data elements of the rotating body together with respective measuring times, determining at least one rotational speed or revolution period of the body for at least one point in time, and associating the obtained measurement data elements to respective rotary angles of the body based on the respective measuring times and the at least one rotational speed or revolution period of the body.

Abstract: The present application relates to a wheel balancer which includes a stationary frame, a measuring shaft mounted rotatably about a shaft axis on the stationary frame and adapted to receive coaxially a rim/tyre assembly. The wheel balancer further includes an encoder configured to determine the angular positions of the measuring shaft or of the rim/tyre assembly, a load device configured to apply a load to the periphery of the rim/tyre assembly, a first measuring device configured to measure forces resulting from an unbalance of the rotating rim/tyre assembly, a second measuring device configured to measure forces acting between the load device and the periphery of the rim/tyre assembly, and a locking device configured to keep the distance between the shaft axis and a contact portion at which the periphery of the rim/tyre assembly contacts the load device constant during the measurement of the forces acting between the load device and the periphery of the rim/tyre assembly.

Abstract: A device to balance a disc, comprising a shaft disposed for rotation about an axis having one end adapted to coaxially receive the disc and an opposite end including rotor structure stator structure to magnetically drive the rotor structure, shaft and disc about the axis; and structure for determining imbalance in the disc.

Abstract: The invention relates to a laboratory apparatus (1) which comprises an electric drive (4), and which is equipped with a device (10) with at least one sensor (13) for detecting vibrations, oscillations or imbalances. Said device (10) fits together with a mating coupling located on the laboratory apparatus (1) by means of a coupling (11) located on said device. Once in the coupled position, the device is connected to the laboratory apparatus (1) or to the controller or to the drive of said apparatus, either wirelessly or via electrical contacts. If any vibrations, oscillations or imbalances occur, they are detected by the sensor (13), which is connected or wired to the closed- or open-loop control of the drive motor via the connection between the coupling (11) and the mating coupling (12), and which can switch off the drive motor (4) or change the speed thereof in the event of undesired or dangerous oscillations, vibrations or imbalances.

Abstract: An apparatus for measuring forces produced by an unbalance of a rotary member 8 includes a support device 3 for supporting the rotary member 8 rotatably about its axis 1, and having at least one measurement sensor 4 placed at a vibratory location of the support device 3, wherein the at least one measurement sensor 4 is designed to measure vibratory accelerations of the location at which the measurement sensor 4 is placed.

Abstract: Machine for balancing vehicle wheels includes: a base frame supporting elements for gripping and rotating a wheel around a balancing axis; first sensor elements associated with the gripping and rotation elements for detecting the unbalance of the wheel; an electronic processing and control unit associated with the first sensor elements for calculating a balancing weight to apply onto the wheel; and an auxiliary detection appliance associated with the base frame and having: a rolling device for pressing onto the wheel, and in turn including: a support structure for two rollers revolving around axes parallel to each other; and a flexible member closed on itself in a loop, wrapped around the rollers and having a substantially flat active section, and a return section substantially opposite the active section; and second sensor elements associated with the rolling device for detecting the behaviour of the wheel when pressed by the rolling device.

Abstract: A bicycle wheel balance machine includes a base having two spaced arms for engaging with a bicycle wheel, a casing slidably engaged in one of the arms and having a center member movable to engage with a wheel hub with an anchoring device, a spindle rotatably engaged in the other arm and engaged with the wheel hub, a motor coupled to the spindle for rotating the spindle and the bicycle wheel, two sensors attached to the arms for sensing conditions of the bicycle wheel, and the bicycle wheel balance machine includes a simplified structure to be easily operated by the users themselves at home.

Abstract: Vibrations of a principal machine are reduced at the fundamental and harmonic frequencies by driving the drive motor of an active balancer with balancing signals at the fundamental and selected harmonics. Vibrations are sensed to provide a signal representing the mechanical vibrations. A balancing signal generator for the fundamental and for each selected harmonic processes the sensed vibration signal with adaptive filter algorithms of adaptive filters for each frequency to generate a balancing signal for each frequency. Reference inputs for each frequency are applied to the adaptive filter algorithms of each balancing signal generator at the frequency assigned to the generator. The harmonic balancing signals for all of the frequencies are summed and applied to drive the drive motor. The harmonic balancing signals drive the drive motor with a drive voltage component in opposition to the vibration at each frequency.

Abstract: A method by which a vehicle wheel service system, having at least one load roller for applying a generally radial load to a wheel assembly mounted on a driven spindle shaft during rotation thereof, provides a measurement which is representative of the loaded rolling resistance of the wheel assembly undergoing testing. In order to rotationally drive the spindle shaft with the vehicle wheel assembly mounted there on, energy is supplied to a drive motor operatively coupled to rotationally drive the spindle shaft. By monitoring the amount of energy or drive torque required to rotationally drive the spindle shaft and achieve and maintain a desired rotational speed for the wheel assembly when engaged with the load roller, a measurement which is related to the loaded rolling resistance of the wheel assembly is obtained by the vehicle wheel balancing system.

Abstract: A method of balancing a physical rotor includes: determining a first balance state of the physical rotor at one or more rotational frequencies; identifying one or more balance zones on a surface of the rotor; providing a computerised simulation of the rotor having the first balance state; providing a first test mass in a first test location within one of the balance zones on the rotor simulation; determining a second balance state of the rotor simulation; providing at least one subsequent test mass in at least one subsequent test location within a balance zone on the rotor simulation and determining at least one subsequent balance state of the rotor simulation; selecting a mass and location from one of the first and subsequent test masses and test locations; and performing a material deposition process to add the selected mass of material to the selected location on the physical rotor.

Abstract: A method of dynamically balancing a shaft for multiple rotational speeds comprising: rotating the shaft in the balancer at a first rotational speed while measuring a first force and a first angle of a first shaft imbalance measurement; rotating the shaft at a predetermined second rotational speed while measuring a second force and a second angle of a second shaft imbalance measurement; comparing the first shaft imbalance measurement to a first predetermined imbalance specification and comparing the second shaft imbalance measurement to a second predetermined imbalance specification; if the first shaft imbalance does not meet the first predetermined imbalance specification or the second shaft imbalance does not meet the second predetermined imbalance specification, then calculating a composite correction based on the first and second shaft imbalance measurements; and applying a first weight to the shaft at a correction first angle based on the calculated composite correction.

Abstract: A method is disclosed for the automatic detection and identification of errors in a balancing machine during operation, in which a rotor provided with an unbalance is rotatably mounted in a vibratory bearing in the balancing machine and is set in rotation by a drive, the rotational frequency of the rotating rotor and the vibrations stimulated by the rotor are measured and measurement signals which comprise the measured values of the rotational frequency and the vibrations are generated and delivered to an evaluation computer. The evaluation calculation is based on mathematical models of the dynamic properties of the balancing machine which describe stimulations of the machine structure due to the unbalance, in particular in the balancing planes, and/or due to the rotor geometry and/or due to the bearing and/or possible damage to the bearing.

Abstract: A passive dynamic inertial rotor balance system including a plurality of balancing members fitted onto a rotor shaft at locations of predicted maximum shaft modal deflection. Each of the balancing members has at least one chamber and located within the at least one chamber is a plurality of movable weights and a viscous fluid. As the shaft accelerates toward an unbalance point, the weights move within the at least one chamber to a location which is opposite from the unbalance point. The viscous fluid provides damping for the movable weights to prevent excess movement within the chamber and to provide lubrication thereof. A system for self-correcting an unbalance of a turbomachinery rotor during rotation of the rotor and a method for balancing a rotor in a turbomachinery is also provided.

Abstract: Systems and methods for detecting an out of balance condition for a washing machine are disclosed. The wash basket of the washing machine is rotated at a constant predetermined rotational speed. If the washing machine has an unbalanced load, the wash tub will strike the cabinet as the basket rotates in the wash tub. The tub strikes cause the wash basket to lose momentum. The inverter drive control system causes the inverter to provide more current through the motor phases to the motor to maintain constant speed. From the value of the current, the severity of the tub strikes during a test period can be determined. An out of balance condition can be detected and measured based at least in part on the severity of the tub strikes.

Abstract: An imbalance correction method for correcting the imbalance of a rotor measures the vibration state of the rotor before temporary correction and the vibration state of the rotor after the temporary correction in a plurality of rotational speeds in order to make vibration values below the standard. An aggregation range of the tips of correction vectors for obtaining a vibration value which satisfies a vibration standard is calculated from vibration vectors in the rotational speeds. A real correction vector is selected from correction vectors having the tips in a region in which the aggregation ranges calculated for each of the rotational speeds overlap one another among a plurality of the correction vectors. A real correction amount and a real correction phase are set based on the real correction vector. The imbalance of the rotor is corrected based on the real correction amount and the real correction phase.

Abstract: A method of balancing tires on a wheel for passenger vehicles, trucks, and the like includes positioning one or more balancing weights in a groove in the tire tread. A novel weight that locks within the groove is also described.

Abstract: A device and a method for damping the imbalance of a rotating part are described, comprising a means for determining at least one parameter of the imbalance during a rotational movement of the part and a means for influencing the axis of rotation of the rotating part in such a manner that the axis of rotation coincides with the axis of inertia of the part, wherein at least one parameter is supplied as an input quantity to the means for influencing to bring about a dynamic variation of the axis of rotation with respect to the axis of inertia of the rotating part.

Abstract: A metering system can include a pull up circuit to be selectively coupled between a voltage node and a metering line that communicates a signal indicative of status of a flow line through which a metered substance flows. An impedance of the pull up circuit is set to reduce power consumption based on a calibration, and the pull up circuit can be disabled between sampling of the signal to reduce power consumption.

Abstract: A shaft imbalance detector system (50) includes a speed sensor (52) that detects a speed of a wheel and generates a speed signal, and a controller (60) connected to the speed sensor (52). The controller (60) is configured to monitor the speed signal, where a variation in the speed signal indicates an imbalance in a shaft (20).

Abstract: The balancing machine for balancing vehicle wheels comprises a supporting structure for supporting grip and rotation members for gripping and rotating a wheel to be balanced, a detector for detecting the unbalance of the wheel during rotation, a processing unit which is operatively associated with the grip and rotation members and with the detector, and interface assembly associated with the supporting structure and operatively associated with the processing unit. The interface assembly comprises a support associated to the supporting structure, a screen housed internally of a first housing on the support and a keyboard housed internally of a second housing on the support.

Abstract: A bicycle wheel balance machine includes a base having two spaced arms for engaging with a bicycle wheel, a casing slidably engaged in one of the arms and having a center member movable to engage with a wheel hub with an anchoring device, a spindle rotatably engaged in the other arm and engaged with the wheel hub, a motor coupled to the spindle for rotating the spindle and the bicycle wheel, two sensors attached to the arms for sensing conditions of the bicycle wheel, and the bicycle wheel balance machine includes a simplified structure to be easily operated by the users themselves at home.

Abstract: The present invention relates to a wheel balancer which comprises a stationary frame, a measuring shaft mounted rotatably about its shaft axis on the stationary frame and adapted to receive coaxially a rim/tyre assembly. The invention further comprises encoder means for determining the angular positions of the measuring shaft or of the rim/tyre assembly, load means to apply a load to the periphery of the rim/tyre assembly, measuring means to measure forces resulting from an unbalance of the rotating rim/tyre assembly, measuring means to measure forces acting between the load means and the periphery of the rim/tyre assembly and locking means to keep the distance between the shaft axis and a contact portion at which the periphery of the rim/tyre assembly contacts the load means constant during the measurement of the forces acting between the load means and the periphery of the rim/tyre assembly.

Abstract: A balancing machine for rotating bodies, particularly for wheels of motor vehicles and the like, including a rotating shaft supported by a supporting element which is connected rigidly to the frame of the balancing machine, at least one first measurement transducer and one second measurement transducer being coupled elastically, along perpendicular planes, to an extension of the supporting element, an actuation motor being connected to the rotating shaft by means of a belt, the actuation motor being connected on an extension of the supporting element, and the extension connecting the rotating shaft to the measurement transducers.

Abstract: The balancing machine for balancing vehicle wheels includes a base frame for supporting a balancing shaft, which receives the vehicle wheel. A plurality of light sources are arranged in a ring around the balancing shaft, and a plurality of pattern generators projects images onto the side of the wheel to form reference points. The light sources are split into sectors, and at least one pattern generator is arranged between two sectors of the light sources. Laser pointers may be used as pattern generators.

Abstract: A tire testing machine according to the present invention, which can measure both uniformity and dynamic balance of a tire T, comprises a spindle for driving the tire T to rotate about a vertical axis, a spindle housing which supports the spindle rotatably, and a rotating drum rotatable about an axis parallel to an axis of the spindle and movable toward and away from the tire T. The spindle housing is fixed to a base through a piezoelectric sensor so that it can bear a pressing force provided from the rotating drum. The piezoelectric sensor is disposed within a plane including the axis of the spindle and perpendicular to the pressing force. With this structure, dynamic balance of the tire can be measured accurately and easily.

Abstract: Systems and methods for an encoder and control scheme are provided. In one embodiment, a micro-electromechanical system (MEMS) device comprises: a stator having a first marker and a second marker arranged on a surface of the stator to form a sensing pattern; a sweeping element that dithers in a plane parallel to the surface of the stator along a sweep path that crosses the first marker and a second marker; an overlap sense circuit operable to measure an area overlap between the sweeping element and the sensing pattern, wherein the overlap sense circuit generates a pulse train signal output that varies as a function of the area overlap.

Abstract: The balancing machine for balancing vehicle wheels comprises a supporting structure of grip and rotation members for gripping and rotating a wheel to be balanced, detection device for detecting the unbalance of the wheel during rotation, a processing unit which is operatively associated to said grip and rotation members and to said detection device, a screen associated to the supporting structure which is operatively associated to the processing unit and adapted to display the detected unbalance data and selectable functions or lists of functions, a control panel having a touch screen control surface arranged in a discrete ring-like manner, is also located on the control panel. The operator slides his finger on the touch screen control surface to scroll between present functions, or lists of functions, displayed on the screen, in a continuous manner.

Abstract: A device for measuring forces generated by an unbalance of a rotor, said device comprising a stationary frame, a first bearing, measuring shaft mounted rotatably about its shaft axis in the first bearing, a mounting means provided on the measuring shaft designed for attachment of the rotor, wherein the rotor is designed to be balanced in at least one compensating plane, a second bearing pivotally supporting the first bearing about a pivot axis which intersects the shaft axis and being supported on the stationary frame, a first force sensor for measuring forces generated by the unbalance of the rotating rotor and acting about the pivot axis, and a second force sensor for measuring forces generated by the unbalance of the rotating rotor and acting on the measuring shaft and on the second bearing in a direction intersecting the shaft axis.

Abstract: System and method for active detection of asymmetry in a rotating structure, the method comprises: imparting harmonic mechanical excitation on the rotating structure that is asynchronous to the speed of rotation of the structure; obtaining a response from the excited rotating body; and analyzing the response to determine a presence of modulation of the imparted harmonic mechanical excitation, that causes vibration at a frequency that is a combination of both the harmonic mechanical excitation and the modulation speed of rotation.

Abstract: The machine for balancing vehicle wheels comprises a base frame supporting a substantially horizontal balancing spindle, a lifting device for lifting a vehicle wheel to be fitted/removed to/from the balancing spindle, contact-free reading means of the profile of the tire associated with the base frame, and a processing and control unit operatively associated with the lifting device and with the reading means and suitable for calculating the position of the center of the wheel in accordance with the values read by the reading means, and for stopping the lifting device in an end-of-lifting position, in which the wheel center is substantially at the same height as the balancing spindle.

Abstract: An apparatus for measuring forces generated by an unbalance of a vehicle wheel, comprising a horizontally oriented measuring shaft (1) which is supported rotary about its shaft axis (2) in a rotary mounting (3) on a stationary machine frame (4) and which is adapted that a vehicle wheel (5) is fixed onto it for the measurement operation, wherein the measuring shaft (1) is movably guided in a vertical direction on the stationary machine frame (4) between a first vertical position in which the measuring operation is conducted and a second vertical position in which the shaft axis is brought into alignment with a wheel axis (6) of the uprightly positioned vehicle wheel (5).

Abstract: Provided is a dynamic balancing apparatus using a simple harmonic angular motion, including a rotational shaft on which a rotational body having an unbalanced mass is installed; a simple angular motion generator for periodically vibrating the rotational shaft; a support for supporting both sides of the rotational shaft; an angular vibration measuring sensor for measuring the simple harmonic angular motion of the rotational shaft; and force or vibration transducers for measuring applied force acting on or vibration transferred to the support by means of the simple harmonic motion of the unbalance mass.

Abstract: The present invention refers to a parameter detection system for detecting in a non-mechanical manner at least one parameter of an object (1) to be examined. The parameter detection system includes a mounting device (2) for holding the object, and a mobile unit (14) which is freely movable and adapted for indicating a position on the object. A sensing means is provided for sensing the position on the object indicated by the mobile unit and for outputting corresponding detection signals indicative of the sensed position. A calculation means (13) is provided for calculating the at least one parameter from the position on object based on the detection signals.

Abstract: An eddy-current actuated balancer includes a barrel having a locating wall at one end thereof; two balancing wheels mounted around the barrel and carrying a respective counterweight at the border, a washer set between the balancing wheels, an elastic ring and a lock ring and a pulsed magnetic field generator mounted on each balancing wheel. The balancing wheels, the washer and the elastic ring are clamped between the locating wall of the barrel and the lock ring. Each pulsed magnetic field generator is controlled to generate a pulsed magnetic field acting upon the associating balancing wheel during its rotation for inducing an eddy current that causes the associating balancing wheel to make an angular displacement relative to the barrel for balance adjustment.

Abstract: In order to check the seat of a tubeless tire (3) fitted to a rim (2) of a vehicle wheel (1), the vehicle wheel (1) is fastened with its rim (2) centrically on a rotary mount and is rotated about its axis of rotation through at least one revolution. During rotation of the wheel, the outer contours of the radially outer edge areas of the rim (2) and the adjoining areas of the tire (3) are scanned by means of a distance measuring device, and the axial distance differences between the rim (2) and the tire (3) are detected and evaluated.

Abstract: Provided is a dynamic balancing apparatus using a linear time-varying angular velocity model, which includes a rotational shaft on which a rotational body having a rotating unbalanced mass is installed; a linear time-varying angular velocity generator which allow the rotational shaft to be rotated at a linear time-varying angular velocity; a support for supporting both sides of the rotational shaft; and a transducer for measuring applied force or vibration transferred to the support by revolution of the rotational shaft having a linear time-varying angular velocity.

Abstract: A method and a machine for balancing vehicle wheels with weights (18), the method comprising stages of: using a video camera (5, 6, 206) to frame a portion of a surface of a hub (101) of a wheel on which a weight (18) is to be applied, locating, in images of the hub (101) taken by the camera (5, 6, 206), at least a balancing plane (E1, E2) which is perpendicular to a rotation axis (A) of the wheel, piloting at least a pick-up device (8, 9, 209) such as to direct the at least a pick-up device (8, 9, 209) onto a point (P1, P2) of the hub (101) belonging to the balancing plane (E1, E2), detecting, by means of the pick-up device (8, 9, 209) characteristic geometric parameters of the hub (101) at the balancing plane (E1, E2), measuring an imbalance of the wheel, calculating, by means of an electronic calculator (4, 204) an entity of at least a weight (18) to be applied to the hub (101) at the balancing plane (E1, E2), and also calculating an angular position (T1, T2) of the weight (18) in the balancing plane (E1,

Abstract: A balance assembly for a rotating assembly comprising: a first movable rotor and a second movable rotor which are selectively movable about the rotating assembly; and a controller with a microprocessor operating with stored control programs for controlling movement of the first movable rotor and second movable rotor and adapted to calculate a value and to periodically modify the value and to cause the first movable rotor and the second movable rotor to move in accordance with the calculated value and the modified value, wherein the values are adjusted during a plurality of control iterations to reduce vibrational signals from an at least one vibration sensor.