US 6,633,148 B1 · Drive device and method for moving a vehicle part

Abstract

The invention relates to a process for adjusting a motor vehicle part between at least two positions, the motor vehicle part being driven by an electric motor, pulse signals being generated according to the rotary motion of the electric motor and being supplied to a control unit for controlling the electric motor, in the first computation (50) with a first parameter set the first value for the instantaneous force acting on the motor vehicle part is determined from the acquired pulse signals at certain first instants. Parallel to the first computation, in at least the second computation (52) with a second parameter set which differs from the first parameter set the second value for the instantaneous force acting on the motor vehicle part is determined from the acquired pulse signals at certain second instants, the two values being considered for the instantaneous action of the force in order to decide whether the electric motor is turned off or reversed or not. Furthermore the invention relates to a corresponding device for executing this process.

Claims12

Dependent claims

Process of using a rotary electric motor to displace a motor vehicle part between at least two positions, comprising the steps of:

generating pulse signals according to rotary motion of the electric motor and supplying said pulse signals to a control unit for controlling the electric motor,
performing a first computation with a first parameter set, which is optimized for determination of a first pinching scenario, and via which a first value of instantaneous force acting on the motor vehicle part is determined from the pulse signals acquired at certain first instants defining a first scanning rate,
parallel to the first computation, performing at least a second computation with a second parameter set, which differs from the first parameter set and which is optimized for determination of a second pinching scenario, and via which a second value for the instantaneous force acting on the motor vehicle part is determined from the pulse signals acquired at certain second instants defining a second scanning rate different from said first scanning rate,
using the computed first and second values for the instantaneous action of the force to determine whether the electric motor is to be turned off or reversed, or is to continue to run.

1 more element

Drive device for a motor vehicle part which can be moved between at least two positions, comprising:

a rotary electric motor for driving the motor vehicle part;
a control unit for controlling the electric motor;
and
means for producing a pulse signal according to the rotation of the motor supplying the pulse signal to the control unit;
wherein the control unit is adapted to perform a first computation determining a first value for the instantaneous force acting on the motor vehicle part with a first parameter set, which is optimized for determination of a first pinching scenario, from pulse signals acquired by the control unit at certain first instants defining a first scanning rate,
wherein the control unit is adapted to perform, parallel to the first computation, at least a second computation determining a second value for the instantaneous force acting on the motor vehicle part with a second parameter set, which is optimized for determination of a second pinching scenario, from pulse signals acquired by the control unit at certain second instants defining a second scanning rate different from said first scanning rate, and
wherein means are provided for using the computed first and second values for the instantaneous action of the force to determine whether the electric motor is to be turned off or reversed, or is to continue to run.

4 more elements

Dependencies are inferred from the claim text.

Drive device and method for moving a vehicle part

Life of this patent

Drive device and method for moving a vehicle part

Life of this patent

Abstract

Claims12