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CN-115726659-B - Motor vehicle power door with stay open and sleep control system and method

CN115726659BCN 115726659 BCN115726659 BCN 115726659BCN-115726659-B

Abstract

The present disclosure relates to power doors for motor vehicles having stay open and sleep control systems and methods. A system and method for controlling movement of a door is provided. The door is movable between an open position and a closed position, and has an equilibrium position in which the door is moved neither towards the open position nor towards the closed position under the force of gravity. The system includes a powered actuator for moving the door to a partially open position between an open position and a closed position. The powered actuator is adapted to allow the door to move to the equilibrium position after the powered actuator moves the door to the partially open position.

Inventors

  • Martin danneman
  • Lehmann Paelschke
  • Sebastian prenger

Assignees

  • 麦格纳博科股份有限公司

Dates

Publication Date
20260505
Application Date
20220829
Priority Date
20210902

Claims (8)

  1. 1. A system (20) for controlling movement of a door (12), the door (12) being movable between an open position and a closed position and having a rest position (74) at which rest position (74) the door (12) is neither moved towards the open position nor towards the closed position under the influence of gravity, the system (20) comprising a power actuator (22) for moving the door (12) to a partially open position between the open position and the closed position, wherein the power actuator (22) is adapted to allow the door (12) to move to the rest position (74) after the power actuator (22) moves the door (12) to the partially open position, Wherein the system (20) further comprises a controller (50) controlling the powered actuator (22), Wherein the controller (50) is adapted to control the powered actuator (22) to move the door (12) to the equilibrium position (74) at an operating rate that is lower than a normal operating rate of the powered actuator (22).
  2. 2. The system (20) of claim 1, wherein the rate of operation is allowed to increase as the door (12) moves away from the partially open position.
  3. 3. The system (20) of claim 2, wherein the operating rate is maintained below a predetermined threshold speed (78) as the door (12) approaches the equilibrium position (74).
  4. 4. The system (20) according to claim 1, wherein the controller (50) is adapted to determine the equilibrium position (74).
  5. 5. The system (20) of claim 4, wherein the controller (50) is connected to at least one closure member feedback sensor (64) to determine when the movement of the door (12) is zero or near zero to determine an equilibrium position (74) of the door (12).
  6. 6. The system (20) according to any one of claims 1 to 5, wherein the powered actuator (22) is adapted to allow the door (12) to move to the equilibrium position (74) after expiration of a predetermined pause period.
  7. 7. The system (20) of any one of claims 1 to 5, further comprising a braking circuit (100), the braking circuit (100) configured to short circuit an electric motor (36) of the powered actuator (22) to produce a braking effect.
  8. 8. A method for controlling the movement of a door (12), the door (12) being movable between an open position and a closed position and having a rest position (74), at which rest position (74) the door (12) is neither moved towards the open position nor towards the closed position under the influence of gravity, the method comprising the steps of controlling a powered actuator (22) to move the door (12) to a partially open position between the open position and the closed position in a normal powered operating mode, holding the door (12) in the partially open position, and allowing the door (12) to move to the rest position (74) after holding the door (12) in the partially open position, Wherein the power actuator (22) is controlled by a controller (50), Wherein the controller (50) is adapted to control the powered actuator (22) to move the door (12) to the equilibrium position (74) at an operating rate that is lower than a normal operating rate of the powered actuator (22).

Description

Motor vehicle power door with stay open and sleep control system and method Cross Reference to Related Applications The present application claims the benefit of U.S. provisional application No. 63/240,002, filed on 9/2 of 2021, the entire contents of which are incorporated herein by reference. Technical Field The present disclosure relates generally to closure member systems for motor vehicles, and more particularly to powered closure member actuation systems for moving a closure member, such as a vehicle door, relative to a vehicle body between an open position and a closed position. Background This section provides background information related to the present disclosure, which is not necessarily prior art. The closure member of the motor vehicle may be mounted to the body by one or more hinges. For example, the passenger door may be oriented and attached to the vehicle body by one or more hinges to swing about a generally vertical pivot axis. In such an arrangement, each door hinge generally includes a door hinge strap connected to the passenger door, a body hinge strap connected to the body, and a pivot pin arranged to pivotally connect the door hinge strap to the body hinge strap and defining a pivot axis. Such swinging passenger doors ("swing doors") have been recognized to have problems such as, for example, when the vehicle is on an inclined surface and the swing door is opened too far or swings closed due to the unbalanced weight of the door. To address this problem, most passenger doors have some type of detent mechanism or inspection mechanism integrated into at least one of the door hinges for inhibiting uncontrolled swinging movement of the door by positively locating and holding the door in one or more intermediate travel positions other than the fully open position. In some high-end vehicles, the door hinge may include an infinite door check mechanism that allows the door to be opened and remain checked at any desired open position. One advantage of a passenger door equipped with a door hinge having an infinite door check mechanism is that the door can be positioned and maintained in any position that avoids contact with an adjacent vehicle or structure. As a further advance, powered closure member actuation systems have been developed. For passenger doors, similar to the passenger doors described above, a powered closure member system may be used to automatically swing the passenger door about its pivot axis between an open position and a closed position to assist a user in moving the passenger door and/or to cause the passenger door to pop-up or otherwise be presented to the user. Typically, a powered closure member actuation system includes a power operated device such as, for example, an electric motor and a rotation-to-linear conversion device operable for converting a rotational output of the electric motor into translational movement of the extendable member. In many devices, the electric motor and the conversion device are mounted to the passenger door, and the distal end of the extendable member is fixedly secured to the vehicle body. One example of a powered closure member actuation system for a passenger door is shown in commonly owned international publication No. WO 2013/0133313 to Schuering et al, which discloses the use of a rotary-to-linear conversion device or powered actuator having an externally threaded lead screw rotationally driven by an electric motor and an internally threaded drive nut in meshing engagement with the lead screw, and to which an extendable member is attached. Thus, control of the rotational speed and direction of rotation of the lead screw results in control of the speed and direction of translational movement of the drive nut and extendable member, thereby controlling the swinging movement of the passenger door between its open and closed positions. The powered actuator may also be used to provide a door check function wherein the door is maintained in a partially open position by the powered actuator. The use of a powered actuator to provide such a door check function may eliminate the need for a mechanical brake to provide such a door check function (e.g., reduce cost). However, one disadvantage is the constant power draw required to use a powered actuator as the braking mechanism. If the door remains in the partially open position for an extended period of time, the battery of the vehicle powering the powered actuator may be fully depleted, causing the door to drift uncontrollably and naturally and strike objects or obstacles. In view of the above, there remains a need to develop alternative powered closure member actuation systems that address and overcome the limitations and disadvantages associated with known powered closure member actuation systems and provide increased convenience and enhanced operational capabilities. Disclosure of Invention This section provides a general summary of the disclosure, and is not a comprehensive disclosure of it