30 results about "Electron motive force" patented technology

An electronic power device comprising support plates each having one face receiving one or more power components and an opposite face in contact with a cooling fluid for cooling said power components by conduction, wherein at least one support plate is associated with another support plate disposed facing it and provided with similar power components, and wherein the power components of the two facing support plates are disposed facing one another and in the immediate vicinity of one another.

The invention is a system that provides a means to using passing air to turn on an electronically powered device that is removably attached to an exterior portion of a vehicle as the vehicle travels betweens two locations. The invention is also embodied as a device that provides a means to turn on an incandescent light bulb that illuminates an ornament that is attached to an automobile window using passing air caused a moving automobile.

A reducer of an electronic power steering apparatus is disclosed. The reducer of an electronic power steering apparatus aids the operation of a steering wheel by the driver by preventing a clearance from being caused by frictional wear between a worm and a worm wheel, by reducing rattle noise caused by backlash, and by minimizing the change in the clearance due to a change in torque.

There is provided a control system for an electronic power steering. The control system includes: a SAT estimating portion for estimating a self aligning torque (SAT) of a vehicle by inputting an angular velocity and an angular acceleration of a motor, a steering torque, and a current command value; and a motor current correction value calculating portion for deciding a running state of the vehicle based on a SAT estimation value estimated by the SAT estimating portion, a vehicle speed, and a steering angle, and correcting the current command value by calculating a motor current correction value based on the SAT estimation value in accordance with the running state. According to this configuration, an offset torque can be always corrected precisely irrespective of a road surface situation or a driving condition such as a straight line running, and thus a comfortable steering performance can be attained by lessening driver's fatigue.

An electronic steering apparatus is provided. The apparatus includes a housing, a worm wheel provided in the housing, a worm axis engaged with the worm wheel in the housing, a bearing installed on the outer circumference of one side of the worm axis, and a resilient member supporting the one side while varying in its angle relative to the axial direction of the worm axis along with the movement of the worm axis, thereby providing an effect of compensating for a gap between the worm and the worm wheel.

When only one of sensor signals generated by the plural systems and output from a torque sensor is normal, a control variable restriction processing part performs an assist restricting process for setting an upper limit value and a lower limit value of a basic assist control variable in accordance with at least one of the lateral acceleration, the steering angle, the steering speed, or the yaw rate.

A controller of an electrically driven power steering apparatus that can be realized by using a low-cost structure to perform a fault diagnosis of A/D converters and that can determine a fault part, for example, which one of the A/D converters is in a fault state to determine whether the application of a steering assist force should be stopped or continued, with the result that the fault diagnosis places no excessive load on a main MCU. A main MCU with an A/D converter (1), a sub MCU with an A/D converter (2), and a D/A converter are provided. The sub MCU outputs a predetermined value to a D/A converter. An error between a predetermined value and a return value (1) obtained by transmitting a predetermined value to the sub MCU through a D/A converter and A/D converter (1) are compared in the sub MCU. An error between a predetermined value and a return value (2) obtained by transmitting a predetermined value to the sub MCU through a D/A converter and A/D converter (2) are compared in the sub MCU to perform the fault diagnosis.

Disclosed is an EPS motor having a steering angle sensor for an electronic power steering system, wherein the EPS motor includes a housing, a bracket, a rotating shaft, a stator and a rotor, and the housing includes an upper housing having the stator and the rotor in an internal space thereof, the bracket coupled to an upper portion thereof, and the rotating shaft coupled to the upper housing to protrude downwards therefrom, and a lower housing disposed under the upper housing to receive the steering angle sensor therein.

A liquid pump has a housing with a suction connection, a pressure connection and a electric motor for rotationally driving a conveying device that has a suction inlet and pressure outlet which communicate with the suction connection and the pressure connection respectively. An electronic power unit for the electric motor is adjacent to the motor and extends transversely to the axis of rotation and is on the rear side of the partition wall of the housing. The suction inlet is arranged at a height smaller than an inner radius of an annular gap between the stator and rotor, whereas a rotor passage extends at a constant height, so that a liquid inducted by way of the suction connection is guided in part via the annular gap and undergoes a deflection at the partition wall, cooling the latter before it passes through the rotor passage to the suction inlet.

A method for operating an electric motor which is used as an electric servo drive in an electronic power steering system of a motor vehicle for power assistance and which has a number of magnetic elements and phase windings and is actuated and/or controlled by an electronic control unit of the electronic power steering system, wherein a temperature of at least one magnetic element of the electric motor is continuously determined during the operation of the electric motor by way of a temperature model and wherein, based on the temperature of the at least one magnetic element of the electric motor determined by way of the temperature model, an electrical current flowing in at least one of the phase windings of the electric motor is limited, taking into account a predeterminable limit temperature of the at least one magnetic element of the electric motor.

The invention relates to a lithium electron power battery and a preparation process thereof. The lithium electron power battery comprises anode and cathode materials, positive and negative plates, an electrolyte and a diaphragm, wherein the positive and negative plates consist of positive and negative current collectors and active materials coated on the positive and negative current collectors. The anode material is prepared by mixing LiMPO4 and Li(Fe1-yMy)PO4 and preserving the heat for 15 to 30 hours at the temperature of between 500 and 900 DEG C, wherein M in the LiMPO4 is Co, Ni or Fe; M in the Li(Fe1-yMy)PO4 is one or two of Si, Nd, Al, La, Pr, Mg and the like; x is more than or equal to 0.001; and y is less than or equal to 0.02. The cathode material is mainly made of graphite with the carbon content of 99.99 percent and adopts a diaphragm material with good chemical stability. The positive and negative plates are put into the center of the folio diaphragm and lithium hexafluorophosphate/vinyl carbonic ether is poured into the diaphragm. A forming current is controlled in the range of 0.5 to 5C. The prepared battery has the characteristics of high electrical property, energy saving and environment protection.

Examples of techniques for vehicle suspension system alignment monitoring are disclosed. In one example implementation, a method includes receiving vehicle data and environmental data including, inertial measurement unit (IMU) acceleration data and global positioning system (GPS) velocity data from a GPS associated with the vehicle, and steering wheel angle data, driver applied torque data, and electronic power steering (EPS) applied torque data associated with the steering system. The method further includes mitigating for at least one of a vehicle effect and an environmental effect based on the vehicle data and environmental data. The method further includes detecting a misalignment based at least in part on one or more of the IMU acceleration data, the GPS velocity data, acceleration data, a steering wheel angle, and a self-aligning torque. The method further includes reporting the misalignment of the vehicle based at least in part on detecting the misalignment.

Methods and systems are provided for determining a road surface friction coefficient and controlling a feature of the vehicle based thereon. In one embodiment, a method includes: receiving signals from an electronic power steering system and an inertial measurement unit; estimating parameters associated with an electronic power steering system model using an iterative optimization method; calculating an electronic power steering system variable using the electronic power steering system model, the estimated parameters and one or more of the received signals; determining whether the calculatedelectronic power steering system variable satisfies a fitness criterion; and when the calculated electronic power steering system variable does satisfy the fitness criterion, determining a road surface friction coefficient based on at least one of the estimated parameters.

The present invention relates to early fault detection for an EPS system, and provides a method and an apparatus for an improved system for early detection of a fault in an EPS system for a vehicle. The apparatus includes a steering gear assembly including a temperature sensor and a pressure sensor for sensing within the steering gear assembly. A controller determines a relationship between the temperature value and the pressure value, and also determines whether the relationship is within a threshold of a reference relationship. The controller can provide an indication or message on a display when the relationship is not within the threshold of the reference relationship. The method includes monitoring a temperature and a pressure associated with an electronic power steering system for a vehicle during operation of the vehicle and determining a relationship between the temperature and the pressure. A fault indication or message is presented on a display when the relationship exceeds a threshold value from a reference relationship.

The invention discloses an electronic power catapult booster and aims at allowing an object to automatically run to a required stroke or position. The electronic power catapult booster is characterized in that a triangular retainer (1) and a planar retainer (2) are disposed in parallel, a planar rack push bar (7) is perpendicular to the planar retainer (2), a push rubber air cushion (8) is parallelly disposed below the planar rack push bar (7) and is in meshed connection with a driven wheel (11), the driven wheel (11) is in meshed connection with another driven wheel (12) which is in meshed connection with a driving wheel (13), the driving wheel (13) is connected to a motor (15) through a transmission (14), the triangular retainer (1) mainly comprises an electromagnet A (3) which is provided with an electromagnet clamp A (9), a coil (5) is arranged at the bottom of the electromagnet A (3), the planar retainer (2) mainly comprises an electromagnet B (4) provided with an electromagnet clamp B (10), and a coil B (6) is disposed at the bottom of the electromagnet B (4). The electronic power catapult booster is stable and safe, allows regular time and constant speed and can automatically run to the required stroke or position; the electronic power catapult booster is applicable to use with drying equipment.

The invention relates to an electronic vehicle power-assisted steering device which comprises a lower rotating shaft connected with a lower ring rotor of a torsion sensor in a clamping way, an upper rotating shaft assembly arranged on the top end of the lower rotating shaft, a pre-twisting assembly arranged on the upper rotating shaft assembly, and a torsion bar, wherein the two ends of the torsion bar are respectively connected with an upper rotating shaft and the lower rotating shaft; the upper rotating shaft assembly is provided with a plurality of first adjusting parts on the upper rotating shaft; the upper rotating shaft assembly is also provided with a first adjustment part and a second adjustment part which are matched with each other on an angle sensing part of an upper ring rotor connected with the torsion sensor in a clamping way; the pre-twisting assembly is arranged, so that a handle is stably held, any action of the electronic vehicle power-assisted steering device can be avoided, and the angle sensing part is further enabled to be assembled on the upper rotating shaft in an adjustable way; during assembly, the torsion sensor is kept in a zero state, and the assembly position between the angle sensing part and the upper rotating shaft is adjusted, so that the angle sensing part is more easily assembled with the torsion sensor which is in the zero state, and the signal read accuracy of the torsion sensor can be improved.

A composite tubular housing for an automotive steering system, preferably an electronic power assist steering system, is formed of seamless metal tube section welded into an integral component. The housing includes a rack section and a pinion section having an opening that is welded to the rack section. A yoke section is formed of a tube having an end that is welded to the rack section opposite the pinion section. The pinion section may contain a drive pinion coupled to a steering wheel of the vehicle. The housing may also include sections for an assist pinion coupled to an electric motor, and a yoke which are attached to the rack section apart from the drive pinion.