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US 8,013,556 B2Granted
Motor control device and vehicle including the same
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHiroyuki Hattori, Kenji Yamada, Ryoji Sato
Life of this patent
Estimating the term…
Abstract
A current instruction generation unit generates a d-axis current instruction and a q-axis current instruction based on a torque instruction for an AC motor, using a map in which a current instruction capable of lowering noise (vibration and sound noise) (low-noise current instruction) generated from the AC motor is determined in advance for each torque of the AC motor. Then, a signal for driving an inverter is generated based on the generated d-axis current instruction and the q-axis current instruction.
Claims15
A motor control device, comprising:
- a current instruction generation unit generating a current instruction based on a torque instruction for a motor;
- a current detection unit detecting a current that flows in the motor;
- and
- a control unit controlling the motor based on a difference between the current instruction and the current detected by the current detection unit;
- the current instruction generation unit generating, based on the torque instruction, a current instruction having a current phase determined in advance for each torque of the motor so as to suppress vibration of the motor, wherein
- the current instruction generation unit generates the current instruction so as to restrict variation in a d-axis current with respect to variation in the torque instruction , and
- the current instruction generation unit generates the current instruction such that the d-axis current monotonously decreases with increase in the torque instruction.
4 more elements
A motor control device, comprising:
- a current instruction generation unit generating a current instruction based on a torque instruction for a motor;
- a current detection unit detecting a current that flows in the motor;
- and
- a control unit controlling the motor based on a difference between the current instruction and the current detected by the current detection unit;
- the current instruction generation unit generating, based on the torque instruction, a current instruction having a current phase determined in advance for each torque of the motor so as to suppress vibration of the motor, wherein
- the current instruction generation unit generates the current instruction so as to restrict variation in a q-axis current with respect to variation in the torque instruction, and
- the current instruction generation unit generates the current instruction such that the q-axis current monotonously increases with increase in the torque instruction.
4 more elements
A motor control device, comprising:
- a current instruction generation unit generating a current instruction based on a torque instruction for a motor;
- a current detection unit detecting a current that flows in the motor;
- and
- a control unit controlling the motor based on a difference between the current instruction and the current detected by the current detection unit;
- the current instruction generation unit generating, based on the torque instruction, a current instruction having a current phase determined in advance for each torque of the motor so as to suppress vibration of the motor, wherein
- the current instruction generation unit generates the current instruction so as to restrict variation in a control voltage of the motor with respect to variation in the torque instruction, and
- the current instruction generation unit generates the current instruction such that the control voltage monotonously increases with increase in the torque instruction.
4 more elements
A vehicle, comprising:
- a motor generating driving force for running the vehicle;
- and
- a motor control device controlling the motor;
- the motor control device including:
- a current instruction generation unit generating a current instruction based on a torque instruction for the motor;
- a current detection unit detecting a current that flows in the motor;
- and
- a control unit controlling the motor based on a difference between the current instruction and the current detected by the current detection unit;
- the current instruction generation unit generating, based on the torque instruction, a current instruction having a current phase determined in advance for each torque of the motor so as to suppress vibration of the motor, wherein
- the current instruction generation unit generates the current instruction so as to restrict variation in a d-axis current with respect to variation in the torque instruction, and
- the current instruction generation unit generates the current instruction such that the d-axis current monotonously decreases with increase in the torque instruction.
8 more elements
A vehicle, comprising:
- a motor generating driving force for running the vehicle;
- and
- a motor control device controlling the motor;
- the motor control device including:
- a current instruction generation unit generating a current instruction based on a torque instruction for the motor;
- a current detection unit detecting a current that flows in the motor;
- and
- a control unit controlling the motor based on a difference between the current instruction and the current detected by the current detection unit;
- the current instruction generation unit generating, based on the torque instruction, a current instruction having a current phase determined in advance for each torque of the motor so as to suppress vibration of the motor, wherein
- the current instruction generation unit generates the current instruction so as to restrict variation in a q-axis current with respect to variation in the torque instruction, and
- the current instruction generation unit generates the current instruction such that the q-axis current monotonously increases with increase in the torque instruction.
8 more elements
A vehicle, comprising:
- a motor generating driving force for running the vehicle;
- and
- a motor control device controlling the motor;
- the motor control device including:
- a current instruction generation unit generating a current instruction based on a torque instruction for the motor;
- a current detection unit detecting a current that flows in the motor;
- and
- a control unit controlling the motor based on a difference between the current instruction and the current detected by the current detection unit;
- the current instruction generation unit generating, based on the torque instruction, a current instruction having a current phase determined in advance for each torque of the motor so as to suppress vibration of the motor, wherein
- the current instruction generation unit generates the current instruction so as to restrict variation in a control voltage of the motor with respect to variation in the torque instruction, and
- the current instruction generation unit generates the current instruction such that the control voltage monotonously increases with increase in the torque instruction.
8 more elements
Dependencies are inferred from the claim text.