31 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.

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.

Disclosed is a torque angle sensor and an electronic power steering apparatus having the torque angle sensor, which includes an upper case, an upper side of which is assembled with a sensor housing, a rotor assembled with an inside of the upper case, the rotor fitted around an outer surface of the output shaft extending through the rotor and assembled with an inside of the upper case, a lower case, a lower side of which is assembled with a spacer cover, and a middle case assembled between the upper case and the lower case. The upper case includes holding parts opposed to each other and formed on an upper surface of the upper case, which is assembled with the sensor housing, and a seating spring protruding downward with inclination from an end of one of the holding parts and elastically bent when the upper case is assembled with the sensor housing. Therefore, it is possible to remove a circumferential clearance and an axial circumferential clearance during assembling of the torque angle sensor with peripheral elements and can absorb movement created by an impact, so as to effectively prevent breakage and mis-operation of the elements included in the torque angle sensor and facilitate the assembling of the electronic power steering apparatus.

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.

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 method of calculating a motor velocity in an electric power steering system comprises receiving a plurality of motor position signals from a motor position sensor of the electronic power steering system, calculating a plurality of angle difference based on the motor position signals prior to performing any filtering operations on the motor position signals, performing a linear regression analysis on the angle differences to predict an angle difference, and calculating a motor velocity based on the predicted angle difference.

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.

The invention relates to a dynamic system compensator for actively controlled power steering systems. A control method for an electric power steering system is provided. The method includes providing a power steering control signal; providing a disturbance cancel command; varying at least one filter based on a frequency of the disturbance cancel command; applying the at least one varied filter to the disturbance cancel command to generate a compensation signal; applying the compensation signal to the power steering control signal to generate a compensated control signal; and controlling the power steering system based on the compensated control signal.

A modular propulsion system includes an array of micromachined field effect electrostatic propulsion devices, each of which is an assembled micromachined device including an array of field effect electrostatic propulsion thrusters, a fuel container of propellant using passive plumbing, electronic power and command controls, with the array of devices disposed about and on a surface of a spacecraft for providing diverse propulsion needs.

The invention discloses an electronic power auxiliary steering device with a pre-tension function. The device is connected with a torsion sensor in a vehicle. The power auxiliary steering device is mainly characterized in that a complex number of annually arranged fixing blocks are fixedly arranged on an inner side of a ring body of a retainer; movable convex blocks are fixedly arranged among the fixing blocks; springs are arranged among the convex blocks and the inner side wall of the ring body in a propped manner; in the normal state, the springs enable the convex blocks to be propped against the periphery of a stopper block in the center of the ring body; the stopper block is connected with an upper rotating shaft; a ring body bottom plate of the retainer is connected with a lower rotating shaft; the upper rotating shaft and the lower rotating shaft are respectively clamped to two ends of a torsion rod; a positioning block for being connected with an upper ring rotor of the torsion sensor is arranged at the bottom end of the upper rotating shaft. According to the structure, the elastic strength of the convex blocks and the springs can be adjusted according to demands, so that the pre-tension power can be changed, and the purpose of improving the durability is achieved.

The present embodiments relate to an electronic power steering device, and relates to a technology for reducing a torque rise resulting from an increase in frictional force in a low-temperature situation of the electronic power steering device. According to the present embodiments, a viscous friction compensation current is calculated using a viscous gain, which has been determined according to a damping coefficient estimated from a temperature sensed in a low-temperature situation of the electronic power steering device, and a steering angular velocity, a Coulomb friction compensation current is calculated using the sensed temperature and the mount of accumulated steering angles, and the calculated viscous friction compensation current and the Coulomb friction compensation current are added to the motor driving current and then supplied such that the driver can have the same feeling of driving, even in the low-temperature situation, as that in the room-temperature situation.

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.