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US 9,732,823 B2Granted
Electromagnetic damper
AssigneeHonda Motor Co., Ltd.
InventorTakafumi Kato
Life of this patent
Estimating the term…
Abstract
An electromagnetic damper is attached to a vehicle and causes oscillation damping force using a motor driven with energy from a power source. The electromagnetic damper includes an electrical circuit that causes a coil of the motor to be short-circuited in a state where the energy from the power source to the motor is interrupted.
Claims10
An electromagnetic damper attached to a vehicle, comprising:
- a motor having a coil electrically connected to a power source that supplies a power to the motor, the motor being configured to generate oscillation damping force;
- a vehicle speed sensor configured to detect a speed of the vehicle;
- a controller provided with a switching element configured to stop a power supply from the power source to the motor and to restart the power supply in a controlled manner in accordance with the speed of the vehicle detected by the vehicle speed sensor;
- and
- an electrical circuit that causes the coil of the motor to be short-circuited to form a closed circuit including the coil therein,
- wherein the controller is configured to control the electrical circuit to short-circuit the coil of the motor in a state where the power supply is stopped and to cause the short-circuited state to end in a state where the power supply is restarted.
3 more elements
A method for controlling an electromagnetic damper attached to a vehicle, comprising:
- supplying a power from a power source to a coil of a motor configured to apply oscillation damping force to the damper;
- detecting a vehicle speed;
- stopping a power supply from the power source to the coil of the motor and restarting the power supply in a controlled manner in accordance with the detected vehicle speed;
- and
- short-circuiting the coil of the motor when the power supply is stopped and causing the short-circuited state to end in a state where the power supply is restarted.
2 more elements
Dependencies are inferred from the claim text.