Method for determining a total mass of a motor vehicle
AssigneeContinental Automotive Technologies GmbH
InventorsAndrei-Stefan Cimponeriu, Stefan Schlößer
Life of this patent
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Abstract
A method for determining total mass of a motor vehicle with at least one wheel during operation based on of Newton's second law of dynamics comprising using vehicle longitudinal force and associated longitudinal acceleration related signals existing on a vehicle bus, wherein frequency filtering, is applied to the longitudinal force and the longitudinal acceleration, to remove force components and acceleration components caused by slowly-varying forces or effects of aerodynamic drag and/or uphill slopes and/or downhill slopes, and wherein the mass calculation be only performed during a predetermined, longitudinal or linear or otherwise appropriate, motion of the vehicle.
Claims17
A method for determining total mass of a motor vehicle comprising:
- determining an associated pair of values of an instantaneous longitudinal force on the vehicle and an instantaneous longitudinal acceleration using longitudinal force and longitudinal acceleration related signals existing on a vehicle bus;
- applying frequency filtering with band-pass frequency filtering to each of the pair of values to remove force components and acceleration components caused by at least one of effects of aerodynamic drag, uphill slopes, downhill slopes, and varying forces when the varying is below a limit to obtain a filtered pair of values;
- and
- calculating the total mass based on of Newton's second law using the filtered pair of values only during a predetermined motion of the vehicle.
Dependencies are inferred from the claim text.