Suspension control method and apparatus for vehicle
First Claim
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1. A suspension control apparatus for a vehicle having at least four wheels and a suspension, comprising:
- measuring means for measuring relative motion between sprung mass and unsprung mass at each of the wheels;
decision means for discriminatively determining occurrence of unsprung mass vibration and occurrence and convergence to cessation of bouncing vibration, and at least one of rolling vibration and pitching vibration on the basis of measurement data from said measuring means; and
control means for controlling at least one of a damping characteristic and a spring characteristic of a damper and a spring of the suspension, respectively, on the basis of the result of decision made by said decision means.
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Abstract
A suspension control apparatus for a vehicle comprises a measuring unit for measuring relative motion between sprung mass and unsprung mass at each of wheels, a decision unit for discriminatively determining occurrence and convergence of at least one of rolling or pitching and bouncing or unsprung mass vibration on the basis of measurement data available from the measuring unit, and a control unit for controlling at least one of damping coefficient and spring constant in the suspension characteristics on the basis of the result of decision made by the decision unit.
45 Citations
28 Claims
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1. A suspension control apparatus for a vehicle having at least four wheels and a suspension, comprising:
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measuring means for measuring relative motion between sprung mass and unsprung mass at each of the wheels; decision means for discriminatively determining occurrence of unsprung mass vibration and occurrence and convergence to cessation of bouncing vibration, and at least one of rolling vibration and pitching vibration on the basis of measurement data from said measuring means; and control means for controlling at least one of a damping characteristic and a spring characteristic of a damper and a spring of the suspension, respectively, on the basis of the result of decision made by said decision means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of controlling a suspension for a vehicle having at least four wheels and a suspension, comprising:
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measuring relative motion between sprung mass and unsprung mass at each of the wheels; a step for discriminatively determining occurrence of unsprung mass vibration and occurrence and convergence to cessation of bouncing vibration, and at least one of rolling vibration and pitching vibration on the basis of measurement data provided by said measuring; and a step for controlling at least one of a damping characteristic and a spring characteristic of a damper and a spring of the suspension, respectively, on the basis of the result of a determination made in said determining step. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification