Suspension control device and suspension device
AssigneeHitachi Astemo, Ltd.
InventorsKen Isshiki, Kyoichi Tagami, Noal Van Nguyen, Eishi Ishimaru
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Abstract
The present invention achieves suspension control that allows for synchronization of the roll and the pitch of a vehicle. This suspension control device that controls the damping force of a suspension comprises: a target pitch angle calculation unit that calculates a target pitch angle with reference to a roll angle signal; and a target control amount computation unit that calculates the roll posture target control amount referred to for controlling the damping force of the suspension by referring to a steering torque signal and the target pitch angle.
Claims7
A suspension control device configured to control a damping force of a suspension, comprising:
- a target pitch angle calculation portion configured to calculate a target pitch angle with reference to a roll angle signal;
- and
- a target control amount calculation portion configured to calculate a target control amount by adding a steering torque-derived target control amount and a pitch moment, the target control amount being referred to when controlling the damping force of the suspension, the steering torque-derived target control amount being obtained with reference to a steering torque signal, and the pitch moment being calculated according to a difference between the target pitch angle and an actual pitch angle, wherein
- the target pitch angle calculation portion includes a gain multiplication portion configured to calculate the target pitch angle by multiplying the roll angle signal by a gain, and
- the target pitch angle calculation portion includes a first gain change portion configured to change a value of the gain with reference to a lateral acceleration.
A suspension device comprising:
- a suspension;
- and
- a control portion configured to control a damping force of the suspension, wherein
- the control portion includes,
- a target pitch angle calculation portion configured to calculate a target pitch angle with reference to a roll angle signal, and
- a target control amount calculation portion configured to calculate a target control amount by adding a steering torque-derived target control amount and a pitch moment, the target control amount being referred to when controlling the damping force of the suspension, the steering torque-derived target control amount being obtained with reference to a steering torque signal, and the pitch moment being calculated according to a difference between the target pitch angle and an actual pitch angle,
- the target pitch angle calculation portion includes a gain multiplication portion configured to calculate the target pitch angle by multiplying the roll angle signal by a gain, and
- the target pitch angle calculation portion includes a first gain change portion configured to change a value of the gain with reference to a lateral acceleration.
Dependencies are inferred from the claim text.