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US 2023/0294471 A1Published application
Method for controlling air suspensions, air suspension controller, air suspension system, vehicle, computer program, and computer-readable medium
AssigneeVolvo Truck Corporation
InventorHiroo YAMAZAKI
Life of this patent
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Abstract
An electronic control unit containing a microcomputer performs: calculating operation variables of left and right air springs of air suspensions based on a steering angle and a roll angle of a vehicle; and controlling air pressures of the left and right air springs in accordance with the calculated operation variables.
Claims15
A method for controlling air suspensions, performed by an electronic control unit containing a microcomputer, comprising the steps of:
- calculating operation variables of left and right air springs of air suspensions based on a steering angle and a roll angle of a vehicle;
- and
- controlling air pressures of the left and the right air springs in accordance with the calculated operation variables.
An air suspension controller comprising:
- a sensor configured to measure a steering angle of a vehicle;
- and
- an electronic control unit containing a microcomputer;
- wherein the electronic control unit is configured to:
- estimate a roll angle by applying a Kalman filter to the steering angle measured by the sensor,
- calculate operation variables of left and right air springs of air suspensions based on the measured steering angle and the estimated roll angle, and
- control air pressures of the left and the right air springs in accordance with the calculated operation variables.
4 more elements
An air suspension system comprising:
- air suspensions mounted on a vehicle;
- an air reservoir configured to store air;
- magnetic valves each configured to control a flow rate of air supplied from the air reservoir to left or right air springs of the air suspensions and a flow rate of air discharged from the air springs;
- a sensor configured to measure a steering angle of a vehicle;
- and
- an electronic control unit containing a microcomputer;
- wherein the electronic control unit is configured to:
- estimate a roll angle by applying a Kalman filter to the steering angle measured by the sensor,
- calculate operation variables of the left and the right air springs of the air suspensions based on the measured steering angle and the estimated roll angle, and
- control air pressures of the left and the right air springs in accordance with the calculated operation variables by outputting actuation signals individually to the magnetic valves.
7 more elements
Dependencies are inferred from the claim text.