Method and apparatus for controlling semi-active suspension components
First Claim
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1. Method for vehicle stability suspension control on a vehicle including a plurality of controllable suspension dampers comprising:
- providing vehicle stability control critical and non-critical combinations of controllable suspension damper positions, damper motion directions, and vehicle turning directions;
controlling said vehicle stability control critical combinations using a feedback damper control signal; and
,controlling said vehicle stability control non-critical combinations using a feedforward damper control signal.
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Abstract
A vehicle comprises a semi-active suspension including controllably adjustable suspension dampers. Open loop and closed loop damper commands are determined for each damper and, depending upon turning direction and damper motion, each damper is controlled with one of the open loop and closed loop damper commands.
37 Citations
11 Claims
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1. Method for vehicle stability suspension control on a vehicle including a plurality of controllable suspension dampers comprising:
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providing vehicle stability control critical and non-critical combinations of controllable suspension damper positions, damper motion directions, and vehicle turning directions; controlling said vehicle stability control critical combinations using a feedback damper control signal; and
,controlling said vehicle stability control non-critical combinations using a feedforward damper control signal. - View Dependent Claims (2, 3, 4, 5)
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6. Control apparatus for a vehicle suspension system including controllable suspension dampers associated with each vehicle corner, comprising:
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a feedback controller effective to provide a suspension damper feedback command based on a respective plurality of vehicle dynamics metrics; a feedforward controller effective to provide a suspension damper feedforward command based on a respective plurality of vehicle dynamics metrics; and
,a suspension damper command arbitrator effective to determine which of the feedback command and the feedforward command is used to control each of said controllable suspension dampers based on a respective plurality of vehicle dynamics metrics. - View Dependent Claims (7, 8, 9)
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10. Method for suspension control on a vehicle including a plurality of controllable suspension dampers comprising:
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determining vehicle turning direction; determining for each controllable suspension damper a respective damper motion direction; and
,during a vehicle stability enhancement suspension control; closed loop controlling controllable suspension dampers corresponding to predetermined control critical combinations of vehicle turning direction and respective controllable suspension damper motion direction; and open loop controlling controllable suspension dampers corresponding to predetermined control non-critical combinations of vehicle turning direction and respective controllable suspension damper motion direction. - View Dependent Claims (11)
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Specification