Abstract: A power transmission device is provided, which includes a main-drive-wheel drive part, and an auxiliary-drive-wheel drive part having a power extraction part which has a transfer gear set comprised of a transfer drive gear connected to the main-drive-wheel drive part and a transfer driven gear meshing with the transfer drive gear and configured to transmit power to the auxiliary drive wheels. In a power transmission path from the main-drive-wheel drive part to the transfer drive gear, an input shaft connected to the main-drive-wheel drive part and a power transmission shaft connected to the transfer drive gear are coupled to each other in a radial direction through a first spline having a first backlash. A first shear damper without backlash and a second shear damper provided with a second spline having a second backlash smaller than the first backlash are provided between the input shaft and the power transmission shaft.

Abstract: A multilayer ceramic capacitor includes a capacitor body, first and second via-conductors, first and second extended electrode portions, first and second outer electrodes, and an insulative resin. The capacitor body includes first and second inner electrodes. The first and second via-conductors are inside the capacitor body, and are respectively electrically connected to the first and second inner electrodes. The first and second extended electrode portions are respectively electrically connected to the first and second via-conductors. The first and second extended electrode portions are located on an outer surface of the capacitor body so as to extend to locations different from locations at which the first and second extended electrode portions are connected to the first and second via-conductors. The first and second outer electrodes are respectively electrically connected to the first and second extended electrode portions.

Abstract: A vehicle includes first and second steering drivers that steer first and second wheel pairs, a lock that locks the first wheel pair to be non-steerable, a first steering controller that controls the first steering driver in accordance with a first steering angle, and a second steering controller that controls the second steering driver in accordance with a second steering angle. The first steering controller controls the lock to lock the steering of the first wheel pair upon detecting anomaly in the steering of the first wheel pair from the steering angle and a steering detection angle of the first wheel pair. The second steering controller controls the second steering driver in accordance with a second corrected steering angle, if the steering of the first wheel pair exhibits anomaly.

Abstract: An inductor includes a plurality of wires disposed about an axis, a first electrode connected to a first end of each of the plurality of wires, and a second electrode connected to a second end of each of the plurality of wires. Each of the wires includes an outer-winding helical portion shifting in an axial direction while gradually increasing a radius thereof, an inner-winding helical portion shifting in the axial direction while gradually reducing a radius thereof, and an outer circumference connection portion that connects an end of the outer-winding helical portion and an end of the inner-winding helical portion at different positions in the axial direction.

Abstract: A power transmission device is provided, which includes a main-drive-wheel drive part, and an auxiliary-drive-wheel drive part having a power extraction part which has a transfer gear set comprised of a transfer drive gear connected to the main-drive-wheel drive part and a transfer driven gear meshing with the transfer drive gear and configured to transmit power to the auxiliary drive wheels. In a power transmission path from the main-drive-wheel drive part to the transfer drive gear, an input shaft connected to the main-drive-wheel drive part and a power transmission shaft connected to the transfer drive gear are coupled to each other in a radial direction through a first spline having a first backlash. A first shear damper without backlash and a second shear damper provided with a second spline having a second backlash smaller than the first backlash are provided between the input shaft and the power transmission shaft.

Abstract: A motor controlling device includes a high-side first switching element corresponding to each phase of a three-phase brushless motor, a low-side second switching element corresponding to each phase, a shunt resistor disposed between and connected to the second switching element and a grounding line, and a power controlling section for controlling the first switching element and the second switching element. The device further includes a decision section configured to effect abnormality decision based on a sum of values of currents flowing in the shunt resistors of all the phases acquired by using the power controlling section to switch OFF the first switching element of any one phase whose duty ratio is found equal to or greater than a threshold value for a predetermined period and also to switch ON the second switching element of the same one phase for the predetermined period.

Abstract: A vehicle includes first and second steering drivers that steer first and second wheel pairs, a steering for the first and second wheel pairs, a detector that detects a steering detection angle of the first wheel pair, a lock that locks the first wheel pair to be non-steerable, a first steering controller that controls the first steering driver in accordance with a first steering angle, and a second steering controller that controls the second steering driver in accordance with a second steering angle. The first steering controller controls the lock to lock the steering of the first wheel pair upon detecting anomaly in the steering of the first wheel pair from the steering angle and the steering detection angle. The second steering controller controls the second steering driver in accordance with a second corrected steering angle, if the steering of the first wheel pair exhibits anomaly.

Abstract: A vehicle, such as a hybrid vehicle, according to one aspect of the present invention is configured such that: a propeller shaft rotated by an engine is arranged so as to extend in a vehicle body front-rear direction; a drive gear provided at a rear end portion of the propeller shaft and a driven gear configured to rotate together with a differential case of a differential device mesh with each other; a motor or a generator is connected to the differential case so as to transmit power to the differential case; the motor or the generator is arranged at one of vehicle width direction right and left sides of an axis of the propeller shaft; and the differential case is arranged at the other of the vehicle width direction right and left sides of the axis of the propeller shaft.

Abstract: A motor controlling device includes a high-side first switching element corresponding to each phase of a three-phase brushless motor, a low-side second switching element corresponding to each phase, a shunt resistor disposed between and connected to the second switching element and a grounding line, and a power controlling section for controlling the first switching element and the second switching element. The device further includes a decision section configured to effect abnormality decision based on a sum of values of currents flowing in the shunt resistors of all the phases acquired by using the power controlling section to switch OFF the first switching element of any one phase whose duty ratio is found equal to or greater than a threshold value for a predetermined period and also to switch ON the second switching element of the same one phase for the predetermined period.

Abstract: An inductor includes a plurality of wires disposed about an axis, a first electrode connected to a first end of each of the plurality of wires, and a second electrode connected to a second end of each of the plurality of wires. Each of the wires includes an outer-winding helical portion shifting in an axial direction while gradually increasing a radius thereof, an inner-winding helical portion shifting in the axial direction while gradually reducing a radius thereof, and an outer circumference connection portion that connects an end of the outer-winding helical portion and an end of the inner-winding helical portion at different positions in the axial direction.

Abstract: A capacitor simulation method and nonlinear equivalent circuit model enabling dynamic simulation of nonlinear characteristics when direct-current voltage is applied with high precesion are easily provided using a simple configuration. An equivalent circuit of a capacitor is represented using a series circuit of passive circuit elements. Characteristic change ratios of the passive circuit elements when a direct-current voltage is applied are expressed as an approximate function on the basis of an actually measured value. A reference voltage is referred to by control current sources connected in parallel to the passive circuit elements. The characteristic change ratios are calculated in accordance with the reference voltage Vref.

Abstract: An inductor simulation method and nonlinear equivalent circuit model enabling dynamic simulation of nonlinear characteristics when a direct current is superimposed with high precision. An equivalent circuit of an inductor is represented using a series circuit of passive circuit elements. Characteristic change ratios of the passive circuit elements when a direct current is superimposed are expressed as an approximate function on the basis of actually measured values. A reference current measured by each of voltage source models is referred to by a control voltage source connected in series to the passive circuit elements. The characteristic change ratios are calculated in accordance with the reference current Iref. Difference voltages are generated on the basis of the characteristic change ratios and voltages occurring when no direct current is superimposed, they are superimposed on the voltages VL1 and VR1 occurring when no direct current is superimposed, thereby simulating the nonlinear characteristics.

Abstract: An analysis device constructs an analytical model with a circuit board and a medium, and applies a concentrated load grouping composed of concentrated loads to the circuit board. In this case, the concentrated loads are established such that the sum of the respective vectors is zero, and such that the torque is zero with respect to the center of gravity. The analysis device applies a finite element method to the analytical model to figure out the vibration of the circuit board, which is caused when the concentrated loads vibrate with a constant period. The change in the pressure of the medium is computed from the vibration of the circuit board, and the change in the pressure is converted to a sound pressure.

Abstract: A power transfer unit for transferring power from a front wheel side to a rear wheel side comprises: a hollow transfer input shaft which is coupled to an engine and through which a right-side front-wheel axle is penetrated; a transfer output shaft disposed to extend in a direction orthogonal to the transfer input shaft; a transfer drive gear provided on an outer periphery of the transfer input shaft; and a transfer driven gear provided on an outer periphery of the transfer output shaft and meshed with the transfer drive gear. It further comprises a damper mechanism configured to absorb a fluctuation in torque input from an engine side into the transfer input shaft. The damper mechanism is disposed such that an intermediate portion and a left end-side portion thereof overlap the transfer driven gear in an extension direction of the transfer output shaft, in top plan view.

Abstract: A vehicle, such as a hybrid vehicle, according to one aspect of the present invention is configured such that: a propeller shaft rotated by an engine is arranged so as to extend in a vehicle body front-rear direction; a drive gear provided at a rear end portion of the propeller shaft and a driven gear configured to rotate together with a differential case of a differential device mesh with each other; a motor or a generator is connected to the differential case so as to transmit power to the differential case; the motor or the generator is arranged at one of vehicle width direction right and left sides of an axis of the propeller shaft; and the differential case is arranged at the other of the vehicle width direction right and left sides of the axis of the propeller shaft.

Abstract: A power transfer unit for transferring power from a front wheel side to a rear wheel side comprises: a hollow transfer input shaft which is coupled to an engine and through which a right-side front-wheel axle is penetrated; a transfer output shaft disposed to extend in a direction orthogonal to the transfer input shaft; a transfer drive gear provided on an outer periphery of the transfer input shaft; and a transfer driven gear provided on an outer periphery of the transfer output shaft and meshed with the transfer drive gear. It further comprises a damper mechanism configured to absorb a fluctuation in torque input from an engine side into the transfer input shaft. The damper mechanism is disposed such that an intermediate portion and a left end-side portion thereof overlap the transfer driven gear in an extension direction of the transfer output shaft, in top plan view.

Abstract: A method for deriving an equivalent circuit model of a capacitor which makes it possible to derive, with high accuracy and with ease, an equivalent circuit model having characteristics in accordance with a direct current voltage applied to a capacitor. Characteristic values of predetermined resistive elements and capacitive elements forming an equivalent circuit model of a capacitor change in response to a DC bias voltage being applied to the capacitor, and the change is attributable to the material of a dielectric forming the capacitor. However, by multiplying the characteristic values of the resistive elements and the capacitive elements held while the DC bias voltage is not applied by a dimensionless coefficient in accordance with an application rule, the characteristic values of the resistive elements and the capacitive elements are corrected to values in accordance with the voltage of the DC bias voltage applied to the capacitor.

Abstract: An inductor simulation method and nonlinear equivalent circuit model enabling dynamic simulation of nonlinear characteristics when a direct current is superimposed with high precision. An equivalent circuit of an inductor is represented using a series circuit of passive circuit elements. Characteristic change ratios of the passive circuit elements when a direct current is superimposed are expressed as an approximate function on the basis of actually measured values. A reference current measured by each of voltage source models is referred to by a control voltage source connected in series to the passive circuit elements. The characteristic change ratios are calculated in accordance with the reference current Iref. Difference voltages are generated on the basis of the characteristic change ratios and voltages occurring when no direct current is superimposed, they are superimposed on the voltages VL1 and VR1 occurring when no direct current is superimposed, thereby simulating the nonlinear characteristics.

Abstract: A capacitor simulation method and nonlinear equivalent circuit model enabling dynamic simulation of nonlinear characteristics when direct-current voltage is applied with high precesion are easily provided using a simple configuration. An equivalent circuit of a capacitor is represented using a series circuit of passive circuit elements. Characteristic change ratios of the passive circuit elements when a direct-current voltage is applied are expressed as an approximate function on the basis of an actually measured value. A reference voltage is referred to by control current sources connected in parallel to the passive circuit elements. The characteristic change ratios are calculated in accordance with the reference voltage Vref.

Abstract: An analysis device constructs an analytical model with a circuit board and a medium, and applies a concentrated load grouping composed of concentrated loads to the circuit board. In this case, the concentrated loads are established such that the sum of the respective vectors is zero, and such that the torque is zero with respect to the center of gravity. The analysis device applies a finite element method to the analytical model to figure out the vibration of the circuit board, which is caused when the concentrated loads vibrate with a constant period. The change in the pressure of the medium is computed from the vibration of the circuit board, and the change in the pressure is converted to a sound pressure.