|
Match
|
Document |
Document Title |
|
|
8179157 |
Setup and method for testing a permanent magnet motor
A test setup for a permanent magnet motor provides a method for identifying symmetry or asymmetry in the magnetic fields of the motor's permanent magnets. The setup comprises a test circuit that...
|
|
|
8143910 |
Semiconductor integrated circuit and method of testing the same
Provided is a semiconductor integrated circuit including: a first path that includes a first logic circuit; a second path that includes a second logic circuit; and a subsequent-stage circuit that...
|
|
|
8143901 |
Test apparatus, test method, and integrated circuit
A test apparatus includes an up counter, a down counter, a selector that selects either an up counter output from the up counter or a down counter output from the down counter, an inversion circuit...
|
|
|
8134384 |
Method for testing noise immunity of an integrated circuit and a device having noise immunity testing capabilities
A method for testing a noise immunity of an integrated circuit; the method includes: determining a value of a power supply noise regardless of a relationship between the power supply noise value...
|
|
|
8125239 |
Self calibrating current sensor
A self-calibrating current sensor for sensing the state of the current passing through a load line enclosed within a housing comprises a sensor disposed adjacent the load line for sensing a current...
|
|
|
8125238 |
Automatic test equipment
A coupling line is provided for coupling a signal generator to a device under test and includes a first Zener diode and a second Zener diode. The first Zener diode and the second Zener diode are...
|
|
|
8115494 |
Systems, methods, and apparatus for rub detection in a machine
Systems, methods and apparatus for monitoring rub detection in a machine are provided. An alternating current voltage signal may be transmitted or communicated to at least one component of the...
|
|
|
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...
|
|
|
8061893 |
Testing system and method for motor
A testing system for testing a temperature characteristic of a first motor includes a second motor, a controller, a driver, a load, a temperature sensor, and a temperature recorder. The controller...
|
|
|
8063626 |
Method for the precise measurement of dependency on amplitude and phase of plurality of high frequency signals and device for carrying out said method
The present invention refers to a method for the precise measurement of dependency on amplitude and phase of a plurality of high frequency signals, preferably in the synchrotron accelerator of...
|
|
|
8058894 |
Method for detecting a fault condition
A method for detecting and correcting for a step loss condition. A back electromagnetic force signal is measured and compared to a reference voltage. The motor continues operating and the back...
|
|
|
8054084 |
Methods and systems for diagnosing stator windings in an electric motor
Systems and methods are provided for identifying a fault condition in stator windings in an electric motor. A method comprises applying a first signal at a first electrical angle to the stator...
|
|
|
8049528 |
Operation of an electrical drive system
An electrical drive system includes an electrical machine controlled by an electronic controller, which requires feedback of signals representing quantities associated with the operation of the...
|
|
|
7960999 |
Methods and systems for evaluating permanent magnet motors
A method for evaluating a permanent magnet motor, which includes a rotor with a plurality of magnets mounted thereon, and a stator with a plurality of windings in proximity to the rotor and coupled...
|
|
|
7956637 |
System and method to determine electric motor efficiency using an equivalent circuit
A system and method for determining electric motor efficiency includes a monitoring system having a processor programmed to determine efficiency of an electric motor under load while the electric...
|
|
|
7852105 |
Winding diagnostic system and method
A winding diagnostic system is provided. The system includes a core having a winding to generate a magnetic flux. A retention device for holding the winding in place is provided. The system further...
|
|
|
7847580 |
System and method for motor fault detection using stator current noise cancellation
A system and method for detecting incipient mechanical motor faults by way of current noise cancellation is disclosed. The system includes a controller configured to detect indicia of incipient...
|
|
|
7847579 |
Systems and methods to evaluate permanent magnet motors
Methods and systems for evaluating a permanent magnet motor are provided. The method includes the steps of spinning a rotor of the permanent magnet motor; determining a total harmonic distortion of...
|
|
|
7804209 |
Arrangement in an electrical machine
The invention relates to an arrangement for indicating a fault in an electrical machine having a stator and a rotor with an air gap between it and the stator. In order to detect impurities or...
|
|
|
7795898 |
Fan having function for detecting fault in the fan
A fan having a function for detecting a fault such as a breakage or a loss of a rotating part of the fan as well as reduction in the rotational speed of the fan, the function being not affected by...
|
|
|
7777516 |
System and method for bearing fault detection using stator current noise cancellation
A system and method for detecting incipient mechanical motor faults by way of current noise cancellation is disclosed. The system includes a controller configured to detect indicia of incipient...
|
|
|
7772870 |
Method and apparatus for layer short detection of electric rotating machine
There is provided a detector for detecting a layer short of a field winding in operation by measuring, with a field detector, a magnetic field generated from a field winding of an electric rotating...
|
|
|
7759966 |
Methods and systems for evaluating permanent magnet motors
A method for evaluating a permanent magnet motor, which includes a rotor with a plurality of magnets mounted thereon, and a stator with a plurality of windings in proximity to the rotor and coupled...
|
|
|
7750663 |
Method and apparatus for testing an electronic motor
An apparatus for testing an electric motor is described. The motor comprises stator windings and a rotor arranged along a rotation axis. The apparatus is adapted to measure a physical quantity of...
|
|
|
7741854 |
Method of in slot tightness measuring of stator coil
A method for measuring a tangential tightness of a stator coil within an armature slot of a stator assembly in an electric generator. The stator coil is excited to produce a vibratory response...
|
|
|
7733237 |
Signaling device and method of controlling the device
Method for controlling a signalling device inserted in an automatism of gates (G), movable barriers, doors or the like, and having at least one warning device (L, BZ), characterized in that it...
|
|
|
7705623 |
Method and device for detecting interlaminar short circuits
A method for determining a short circuit between at least two stator laminates in an electrical machine having a rotor mounted on a shaft and a stator, includes rotating the rotor on the shaft...
|
|
|
7705352 |
Test structure for estimating electromigration effects with increased robustness with respect to barrier defects in vias
By providing vias of increased mass flow blocking capability next to respective line segments of an electromigration test structure, the reliability of respective assessments may be enhanced, since...
|
|
|
7705555 |
Method and controller for detecting a stall condition in a stepping motor during micro-stepping
A method is provided for detecting a stall condition in a stepping motor. The stepping motor has two coils and a rotor, and is micro-stepped by substantially continuously driving both of the two...
|
|
|
7649378 |
Methods for evaluating permanent magnet motors after manufacture and during service
A method evaluates a motor assembly having a first permanent magnet motor in a transmission of an automotive drive system at an end of manufacturing line evaluation. The first motor includes a...
|
|
|
7649470 |
Method and apparatus for detection of brush sparking and spark erosion on electrical machines
A method and apparatus for detection of spark activity in an electrical machine having a shaft, wherein at least one of the shaft voltage and the shaft current is measured and analyzed for...
|
|
|
7642806 |
Test apparatus, system, and method with a magnetic feature
A magnetic test apparatus, in accordance with one embodiment, comprising a rotor coupled to a drive shaft, wherein the drive shaft is mechanically coupled to a drive system; a stator coupled to at...
|
|
|
7629787 |
Current sensor having shunt resistor and clamper diode for motor control
The present invention provides an improved motor current sensor and methods thereof. A first embodiment of the present invention provides a circuit having a signal transfer unit for receiving first...
|
|
|
7626395 |
Hybrid vehicle testing system and method
In a hybrid vehicle, first, an engine is locked by an engine shaft locking mechanism. A first motor is connected to a first inverter circuit and a second motor is connected to a second inverter...
|
|
|
7616023 |
Method of detecting a malfunction of an encoder for a vehicle drive system
A method of detecting a malfunction of an encoder used in a vehicle drive system includes determining an error of a motor speed based on an estimated motor speed, wherein the estimated motor speed...
|
|
|
7612576 |
Method for detecting an inverter hardware failure in an electric power train
In a method for detecting an inverter hardware failure in an electric power train comprising high voltage cables, at least one electric machine and at least two inverter legs with two power...
|
|
|
7592772 |
Stator inter-turn fault detection of synchronous machines
A fault detection system using field current and rotor search coil voltage harmonics is provided. The technology is capable of detecting an inter-turn fault unambiguously and rapidly in a...
|
|
|
7570074 |
Electronic overload relay for mains-fed induction motors
An induction motor having a rotor and a stator is protected during running overloads by connecting the motor to an overload protection relay that can be tripped to interrupt power to the motor in...
|
|
|
7570004 |
System and method for detecting a motor shorting relay failure
Methods and systems for detecting a motor shorting relay failure. Exemplary embodiments include methods and systems for determining a motor shorting relay failure in a motor, the motor having first...
|
|
|
7545111 |
Testing inverter driven electric motor shut-off path
A method for testing electric motor shut-off including injecting current into an electric motor, applying at least one of a short or an open to the electric motor for a predetermined length of...
|
|
|
7545163 |
Three phase motor diagnostics and phase voltage feedback utilizing a single A/D input
A motor system utilizes a single feedback output to determine various fault states for a 3-phase motor in a non-operational condition. The same single feedback output may be used to determine the...
|
|
|
7539549 |
Motorized system integrated control and diagnostics using vibration, pressure, temperature, speed, and/or current analysis
Systems and methods are disclosed for controlling and diagnosing the health of a motorized system. The systems may comprise a diagnostics system and a controller, wherein the diagnostics system...
|
|
|
7538571 |
Starter zero current test apparatus and method
An alternator and starter tester system having a starter current zero test. The current is measured before and after a solenoid of a starter motor is energized and deenergized to determine if the...
|
|
|
7535372 |
Method for measuring the operating state of a synchronous motor using composite power angle meter
The present invention discloses a method for measuring the operating state of synchronous motor by using composite power angle meter, the method comprising steps of: a) obtaining various signals of...
|
|
|
7528611 |
Methods and system for detecting winding faults in a generator with parallel windings
A method for detecting stator ground faults in a generator is described. The method includes receiving a neutral voltage signal from a neutral point of a stator, receiving a plurality of terminal...
|
|
|
7499815 |
Machine radial stack gap generation and clearance management system and method
A system and method for readily generating radial clearance data for a radial clearance between locations on at least two parts in a rotating machine includes rendering an image of a cross section...
|
|
|
7489483 |
System and method for look ahead detection of electrical problems at a motor of a vehicle
A system for sensing short circuits and open circuits prior to operation of a motor (i.e., while the motor is in a static state), thereby sparing the electrical system from destructive effects of...
|
|
|
7462999 |
Brushless servo motor tester
A permanent magnet brushless (PMBL) servo motor test apparatus and method allow testing of a motor in place. A set of static and dynamic tests is performed to determine proper motor operation of...
|
|
|
7414425 |
Damping control in a three-phase motor with a single current sensor
While a PWM-controlled, FET-switched three-phase motor is operating in a mechanical damping mode, a single current sensor is used to measure current in the motor. When mechanical feedback into the...
|
|
|
7411404 |
Apparatus, system, and method for detecting an electrical short condition in a dynamoelectric machine
A system, apparatus, and method (10) for detecting an electrical short condition in a dynamoelectric machine are described. The method includes determining an operating parameter of a...
|