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Class 318/52 - Slipping and/or racing control for electric motors


Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which means are provided for reducing
No. of patents: 139
Last issue date: 03/15/2011


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NumberTitleIssue Date
7906919Electric vehicle, and device and method of controlling slip thereof
A slip control device, a slip control method, and a vehicle provided with such a slip control device are provided, with which the vehicle can travel stably even on a slippery road surface while maintaining good road holding. The device has torque directive control m...
03/15/2011
7548032Locomotive speed determination
A method and system for determining a ground speed for locomotives (e.g., 12, 14) of a train (16) comprising at least two locomotives for use in controlling an operation of the train. The method includes selecting an axle of any one locomotive of the t...
06/16/2009
7417386Electronic line shaft
A method and assembly for synchronizing machine operations, the assembly comprising a reference generator for generating a speed reference signal and a position reference signal, a plurality of slave units, each slave unit including, a mechanical device, a separate ...
08/26/2008
7350435Motor, especially a gear motor or a selector motor of a transmission actuating system, and method for detecting the moving direction of a motor
The invention relates to a method for determining the moving direction of a motor, especially an electric motor of a transmission actuating system for gear selection and/or shifting, whereby at least one signal of the motor is detected. The inventive method is chara...
04/01/2008
7315773Vehicle motion control method and vehicle motion control apparatus
This invention provides a vehicle motion control method and a vehicle motion control apparatus capable of improving the behavior stability of a vehicle. According to the vehicle motion control method, vehicle steering characteristic is determined based on a behavior...
01/01/2008
7285926System and method for locomotive adhesion control
A traction control system for controlling an electric traction motor drivingly coupled to a wheel of a tractive vehicle. The traction control system includes means for determining speed of the wheel, means for determining tractive effort of the wheel and a control c...
10/23/2007
7283897Method and system for compensating for wheel wear on a train
A method and system for compensating for wheel wear uses position and/or speed information from an independent positioning system to measure some distance over which the train has traveled. Wheel rotation information is also collected over the distance. The wheel ro...
10/16/2007
7275794Braking system for a battery powered industrial truck
A braking system for battery-powered industrial trucks, comprising a three-phase driving motor which drives a driving wheel, a first braking device associated with the driving wheel, a brake pedal with which a braking signal generator is associated to generate an el...
10/02/2007
7265538Method and device for measuring the rotational speed of a pulse-activated electric motor based on a frequency of current ripples
A method and a device for measuring the speed of a pulse-activated electric motor are described. According to this method, the motor is fully activated at time intervals to be determined for a defined measuring time by the circuit element provided for timing and, in...
09/04/2007
7245094Power output apparatus, motor vehicle equipped with power output apparatus, and control method of power output apparatus
In the vehicle of the invention, when the temperature of an inverter 42 for driving a motor MG2 linked to front wheels 62a and 62b reaches or exceeds a preset restriction start temperature, the drive control of the invention...
07/17/2007
7230393Motor control apparatus and motor control method
In response to detection of a skid of drive wheels based on an increase in angular acceleration α of a rotating shaft of a motor, the control procedure of the invention refers to a map representing a variation in maximum torque Tmax against the angular acceleration...
06/12/2007
7213520Diesel electric locomotive
A diesel electric locomotive includes a main generator for a drive apparatus and an auxiliary generator for auxiliary appliances, connected to a diesel engine. The main generator is connected by a first rectifier to the direct current traction intermediate circuit o...
05/08/2007
7212407Electrical power converter method and system employing multiple output converters
A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ...
05/01/2007
7205730Article transport vehicle
The invention provides an article transport vehicle that includes: a vehicle body; a first wheel that supports the vehicle body; a second wheel that is disposed spaced apart from the first wheel in a fore-and-aft direction, and that supports the vehicle body; a firs...
04/17/2007
7202616Synchronous control method and device of the same
A synchronous control device which is provided with drive motors and a central control unit generating a synchronous reference signal and with which the drive motor is controlled to rotate synchronously with the synchronous reference signal supplied from the central...
04/10/2007
7196491System and method for stall detection of a motor
A motor starter system comprises solid state switches for connection between an AC line and motor terminals for controlling application of AC power to the motor. A voltage sensor senses AC line voltage and the motor terminal voltage. Current sensors sense motor curr...
03/27/2007
7191866Electric power steering apparatus
An electric power steering apparatus includes a speed reducing mechanism for decelerating the rotation of a rotatable shaft in an electric motor and a converting mechanism for converting the output rotation of the speed reducing mechanism into the axial movement of ...
03/20/2007
7190133Energy storage system and method for hybrid propulsion
A hybrid propulsion system. The system comprises one or more hybrid propulsion traction drives having an electric motor operable to produce mechanical power for propulsion. A hybrid propulsion traction drive is operable to receive power from an on-board power genera...
03/13/2007
7187548Power converter having improved fluid cooling
A thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support, which may be controlled in a closed-loop manner. Interfacing between circuits, circuit mounting...
03/06/2007
7187568Power converter having improved terminal structure
A terminal structure for power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in removing heat fr...
03/06/2007
7177153Vehicle drive module having improved cooling configuration
An electric vehicle drive includes a thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. Power electronic circuits are thermally matched, such as bet...
02/13/2007
7148635Motor drive with synchronized timing
A motor control system for controlling a motor includes control logic and a motor controller. The control logic is operable to generate a control signal at a first periodic time responsive to a synchronization signal. The motor controller is operable to generate a d...
12/12/2006
7141946Method and apparatus for providing optimal acceleration feedback
A method and apparatus for use with a motor controller that receives a command velocity and that applies voltages to drive a motor at the command velocity, the apparatus comprising a dual inertia lost motion assembly including a motor and a load couplable to the mot...
11/28/2006
7142434Vehicle drive module having improved EMI shielding
EMI shielding in an electric vehicle drive is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in remov...
11/28/2006
7132806Motor control apparatus and motor control method
An increase in angular acceleration α of a rotating shaft of a motor, which outputs a torque to a drive shaft linked to drive wheels, may cause a skid on the drive wheels. In response to detection of a skid, the control procedure of the invention sets a maximum tor...
11/07/2006
7126293Wheel slip correction system
A wheel slip correction system for an electric traction motor propelled vehicle having a plurality of DC electric traction motors with series connected armature and field windings incorporates an apparatus connected in circuit with each motor for reducing motor arma...
10/24/2006
7095208Inverter controller for driving motor and air conditioner using inverter controller
A reactor having a predetermined small capacity is connected to a rectifier, and a capacitor having a predetermined small capacity is connected between DC bus lines of the inverter, so that a small, light and low-cost inverter controller for driving a motor can be i...
08/22/2006
7095612Cooled electrical terminal assembly and device incorporating same
A terminal structure provides interfacing with power electronics circuitry and external circuitry. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the terminal structure and the circuits through fluid ...
08/22/2006
7091678Device and method for controlling prime mover
When an angular acceleration α of a rotating shaft of a motor connected with a drive shaft exceeds a preset threshold value αslip, which suggests the occurrence of a skid, the torque control procedure sets a maximum torque Tmax by referring to a map, which gives a...
08/15/2006
7084602Predicting wheel slip and skid in a locomotive
The present invention is directed to the termination of the occurrence of wheel slip/skid and prediction and prevention of the onset of wheel slip/skid in a locomotive. In one configuration, a lookup table of adhesion factors is used to predict the occurrence of whe...
08/01/2006
7077632Blower having a blower tube incorporating a reduction device for reducing the clear flow cross section of said blower tube at idle operation
A blower (1) has a housing (10) to which a blower pipe (2) may be removably connected. An internal combustion engine located within the housing (10) drives a blower wheel. The blower wheel, in turn, generates an air flow (11) withi...
07/18/2006
7061775Power converter having improved EMI shielding
EMI shielding is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits th...
06/13/2006
7049785Apparatus and method of controlling a stepper motor
An apparatus and method of controlling a stepper motor, includes a torque calculator to calculate torque operated on the stepper motor and to output to a controller a driving current setting signal corresponding thereto. The controller outputs to a driver a control ...
05/23/2006
7044019Accelerator pedal
The invention relates to an accelerator pedal device that includes at least one pedal element that can be moved in relation to a base element, at least one retraction element, and at least one damper element that is used to dampen the pedal actuation movement and th...
05/16/2006
7040439Hybrid car control apparatus
A motor control apparatus for a hybrid car is capable of reducing a spin of the wheel driven by the motor. The hybrid car comprises an engine driven wheel driven by an engine and a motor driven wheel to be driven by a motor for driving the wheel not driven by the en...
05/09/2006
7032695Vehicle drive module having improved terminal design
A terminal structure for vehicle drive power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in re...
04/25/2006
7027900Enhanced locomotive adhesion control
A method of dynamically controlling traction of a locomotive (V) having a plurality of axles (A1–A6) on each of which are mounted wheels (W) for moving the locomotive over a set of rails (R). A creep control signal (creep_n) is provided to a controll...
04/11/2006
7016192Electrical power converter method and system employing multiple-output converters
A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ...
03/21/2006
7015667Current regulation for a field weakening motor control system and method
A control system and method for an electric machine includes a first calculation module that receives a modified torque command and a calculated stator flux command and that generates first and second current commands and first and second voltage commands. A voltage...
03/21/2006
6995540Electric motor car controller
An electric motor car controller includes a voltage detector for detecting the voltage across a filter capacitor, an energy amount calculator for calculating the amount of energy of the filter capacitor from the output of the voltage detector, a frequency band compo...
02/07/2006
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