Denso Corporation

Eiichiro Kawakami

Shigenori Mori

Takeshi Itoh

Tomoko Kodama

Jyunji Miyachi

A boost control section for controlling a converter includes a PI control section and a resonance suppression section. The PI control section calculates a basic command value based on a deviation between a drive voltage generated by the converter and a target voltage to equalize the drive voltage and the target voltage. The resonance suppression section calculates, based on the state of variation of the drive voltage, a correction value for correcting the basic command value to suppress the variation. The basic command value is corrected by adding the correction value. First and second drive pulses corresponding to the corrected command value are outputted to the converter.

Converter control device for vehicle

A drive motor control apparatus for a vehicle, wherein the vehicle has a motor and rotation detecting unit. In the apparatus, the first difference computing unit computes one of multiple first differences every time an actual detected angle of rotation of the motor becomes a corresponding representative angle during the one cycle. The first difference indicates an advancing amount of an estimated angle relative to the actual detected angle. The second difference computing unit computes multiple second differences based on the first differences of the one cycle. The second differences are adjusted in accordance with a degree of acceleration and deceleration of the motor. The adjusted second differences are used for correcting the actual detected angle of rotation of the motor.

Drive motor control apparatus for vehicle, motor control system, method for correcting rotation angle of motor, program for performing the same, rotation detecting apparatus

The traction motor control apparatus has a correction means for correcting an error included in a rotation detection signal outputted from a rotation angle sensor and outputting it as corrected rotation data for control of a motor. The correction means includes a rotation time predicting section configured to predict a predicted time necessary for the motor to rotate by a predetermined reference angle on the basis of a time having been elapsed for the motor to rotate by a predetermined angle, the time being calculated from the rotation detection signal outputted from the rotation angle sensor, a predicted rotation data generating section configured to generate a predicted rotation angle of the motor on the basis of the predicted time, and a corrected data updating section configured to update the corrected rotation data presently being outputted from the correction means in accordance with the predicted rotation angle.

Traction motor control apparatus for vehicle

A control device for a travel motor mounted to a vehicle has a resolver which works as a rotation-angle sensor. The control device has a RDC which calculates a rotation-angle output value &#x3c6; based on rotation detection signals Sa, Sb transferred from the resolver. The control device supplies electric power to the travel motor based on the rotation angle output value &#x3c6;. The RDC calculates 'sin(&#x3b8;&#x2212;&#x3c6;)' as an error deviation &#x3b5; based on the signals Sa and Sb and the rotation-angle output value &#x3c6;. The RDC calculates an angular acceleration by multiplying the error deviation &#x3b5; with a gain (=Ka&#xb7;Kb), and integrates the angular acceleration two times in order to obtain a next rotation-angle output value. A gain control part of the RDC decreases the gain when the judgment means judges that the travel motor rotates at a constant rotation speed.

Control device for controlling travel motor of vehicle

A method and diagnosis apparatus are provided. A velocity measuring section measures a bit length of communication carried out between nodes based upon a communication signal inputted from a communication bus. The measured bit length is input to a control section, which sets a bit length based upon input from the velocity measuring section and arranges the communication section to decode the communication signal. The communication section specifies a frame reception time and a frame ID as an identification code of a time slot in which a frame is transmitted. Each time the frame is received after setting the bit length, the control section records information of the frame reception time and the frame ID inputted from the communication section in a log file. The control section determines whether the frame is transmitted in a constant period from each time slot based upon the content of the log file.

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Chiryu, Japan

Eiichiro Kawakami