METHOD FOR COMPENSATING FOR FRICTION IN A POWER STEERING SYSTEM

Method for compensating for a friction between at least two parts, the method being based on a friction model (M), a speed (v) between at least one part and at least one other part of the at least two parts, the speed being measured, or estimated from a measurement, the speed (v) being input data of...

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1. Verfasser: BAUDOUIN, Nicolas
Format: Patent
Sprache:eng
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Zusammenfassung:Method for compensating for a friction between at least two parts, the method being based on a friction model (M), a speed (v) between at least one part and at least one other part of the at least two parts, the speed being measured, or estimated from a measurement, the speed (v) being input data of the model (M), the model (M) being based on an internal state (z) of friction, a time derivative (ż) of the internal state (z) being a function of said internal state and of the speed (v) and of a first gain (σ), the method comprising a step of saturation of the speed v at the input of the friction model, so that an absolute value |v| of the speed (v) remains lower than a saturation value, the saturation value being a function of the speed, of the first gain and of a second gain.