Sprung mass damping control system of vehicle

A sprung mass damping control system of a vehicle, which is configured to suppress sprung mass vibration generated in a vehicle body of a vehicle provided with at least one of a motor-generator, a motor, or a generator capable of operating as motor, as a drive source, the sprung mass damping control system comprising:

• a sprung mass damping control amount calculating device that sets a sprung mass damping control amount for suppressing the sprung mass vibration;
• and
• a drive source control device that executes sprung mass damping control by controlling a motor-generator control amount of the motor-generator or a motor control amount of the motor or the generator to realize the sprung mass damping control amount, wherein
• i) when the motor-generator control amount is a value that is the same as or close to a voltage increase determining threshold value of a system voltage of an inverter, sprung mass damping control using the motor-generator is restricted by prohibiting sprung mass damping control using the motor-generator or by reducing the sprung mass damping control amount, or
• ii) when the motor control amount is a value that is the same as or close to a voltage increase determining threshold value of a system voltage of an inverter, sprung mass damping control using the motor or the generator is restricted by prohibiting sprung mass damping control using the motor or the generator or by reducing the sprung mass damping control amount.

A sprung mass damping control system of a vehicle, which is configured to suppress sprung mass vibration generated in a vehicle body of a vehicle provided with at least one of a motor-generator, a motor, or a generator capable of operating as motor, as a drive source, the sprung mass damping control system comprising:

• a sprung mass damping control amount calculating device that sets a sprung mass damping control amount for suppressing the sprung mass vibration;
• and
• a drive source control device that executes sprung mass damping control by controlling a motor-generator control amount of the motor-generator or a motor control amount of the motor or the generator to realize the sprung mass damping control amount, wherein
• the control mode of sprung mass damping control is determined according to the usage state of the motor-generator, the motor, or the generator, wherein the usage state of the motor-generator, the motor, or the generator is a state in which output of the motor-generator, the motor, or the generator is being used to execute damping control other than the sprung mass damping control, wherein the other damping control is drive train damping control that suppresses drive train vibration in the vehicle, and when the drive train damping control is executed simultaneously with sprung mass damping control using the motor-generator, the motor, or the generator, sprung mass damping control using the motor-generator, the motor, or the generator is restricted by prohibiting sprung mass damping control using the motor-generator, the motor, or the generator, or by reducing the sprung mass damping control amount.

A sprung mass damping control system of a vehicle, which is configured to suppress sprung mass vibration generated in a vehicle body of a vehicle provided with at least one of a motor-generator, a motor, or a generator capable of operating as motor, as a drive source, the sprung mass damping control system comprising:

• a sprung mass damping control amount calculating device that sets a sprung mass damping control amount for suppressing the sprung mass vibration;
• and
• a drive source control device that executes sprung mass damping control by controlling a motor-generator control amount of the motor-generator or a motor control amount of the motor or the generator to realize the sprung mass damping control amount, wherein
• the control mode of sprung mass damping control is determined according to the usage state of the motor-generator, the motor, or the generator,
• wherein the vehicle is a hybrid vehicle that is also provided with an engine as the drive source, sprung mass damping control using the motor-generator, the motor, or the generator is restricted by prohibiting sprung mass damping control using the motor-generator, the motor, or the generator, or by reducing the sprung mass damping control amount, when a crank angle position is being controlled using output from the motor-generator, the motor, or the generator while the engine is stopped.

A sprung mass damping control system of a vehicle, which is configured to suppress sprung mass vibration generated in a vehicle body of a vehicle provided with at least one of a motor-generator, a motor, or a generator capable of operating as motor, as a drive source, the sprung mass damping control system comprising:

• a sprung mass damping control amount calculating device that sets a sprung mass damping control amount for suppressing the sprung mass vibration;
• and
• a drive source control device that executes sprung mass damping control by controlling a motor-generator control amount of the motor-generator or a motor control amount of the motor or the generator to realize the sprung mass damping control amount,
• wherein, when there is a possibility of resonance that accompanies execution of the sprung mass damping control being amplified, sprung mass damping control using the motor-generator, the motor, or the generator is restricted by prohibiting sprung mass damping control using the motor-generator, the motor, or the generator, or by reducing the sprung mass damping control amount,
• wherein the vehicle is a hybrid vehicle that is also provided with an engine as the drive source, and there is a possibility of resonance that accompanies execution of the sprung mass damping control being amplified when i) there is a misfire in the engine, ii) catalyst degradation suppressing control of the engine is being executed, or iii) the speed of the engine is being controlled by the output of the motor-generator, the motor, or the generator.