Embodiments of systems and methods for operating a power tailgate system involve a vehicle that includes a tailgate, a motor connected with the tailgate for interdependent movement, and a motor circuit for the motor. The embodiments include, upon the initiation of a driving event in the vehicle, identifying that the tailgate is unclosed. The embodiments further include, in response to identifying that the tailgate is unclosed, upon the initiation of the driving event, irrespective of whether the tailgate is moving or not moving, checking the tailgate against movement during the driving event, wherein checking the tailgate against movement includes operating the motor circuit to electrically brake the motor.

An open roof assembly for use in a vehicle roof of a vehicle comprises a moveably arranged closure member for selectively covering or at least partially exposing an opening in the vehicle roof, an electric motor operatively coupled to the closure member through a mechanical drive assembly for moving the closure member, an electric driving unit for providing a supply signal to the electric motor and a control unit operatively coupled to the electric driving unit for controlling operation of the electric motor. The electric driving unit comprises four switching devices in a bridged configuration and the control unit is configured to control a motion of the closure member by controlling operation of the switching devices, and to incur a safety stop during a motion of the closure member by an immediate reversal of a polarity of the supply signal.

A combination door operator assembly and door, wherein the door operator assembly includes an operator unit mounted to the door on the pulling side or the pushing side thereof, an arm linkage having a driving arm and a driven arm, a mounting bracket preferably mounted on the frame to which the door is hinged, a rechargeable power storage pack having at least one of a rechargeable battery and one or more capacitors, and a controller, for monitoring a speed and a position of the door, wherein when the door moves faster than a predetermined speed, the motor is used as a generator to charge the rechargeable power storage pack and the speed of the door is reduced.

The present invention relates to a sectional door operator system (1) for opening and closing an opening (2), comprising a door frame (3) comprising a first frame section (4) at a first side (5) of the opening (2) and a second frame section (6) at a second side (7) of the opening (2), a door (8) arranged to be moved between an open (0) and closed (C) position and comprising a plurality of horizontal and interconnected sections (9) connected to the door frame (3) at least a drive unit (10) mounted on a first section (9) of the plurality of sections (9), wherein the drive unit (10) is moveably connected to the first frame section (4) and the drive unit (10) is moveably connected to the second frame section (6), the drive unit (10) comprise at least one motor (11) connected to at least one battery (12) arranged to power the at least one motor (11), and the drive unit (10) is arranged to move the door (8) from the closed position (C) to the open position (0).

An opening/closing body drive device includes: a motor which opens or closes an opening/closing body; a drive unit which rotates the motor; and a control unit which controls the drive unit. The drive unit includes first and second integrated circuits having first and second switching elements and third and fourth switching elements which are connected to each other in series with respect to a power source and connection points of which are connected to one and the other terminals of the motor, respectively. The control unit turn-on drives only the second switching element when braking the motor during the forward rotation and turn-on drives only the fourth switching element when braking the motor during the reverse rotation, or turn-on drives only the third switching element when braking the motor during the forward rotation and turn-on drives only the first switching element when braking the motor during the reverse rotation.

A system for fixing and/or emergency opening of a leaf of a door, a window or other closure comprises a drive having at least one mechanical energy storage device, at least one electric motor having a motor shaft operatively connected to the leaf, and control electronics for controlling the electric motor. The electric motor can be actuated by the control electronics both for damping of the leaf movements and for fixing of the leaf against a force of the mechanical storage device and/or for electric motor-driven emergency opening of the leaf.

The present invention provides a motor driver and a motor driving system capable of suppressing power consumption when a motor is in a brake state. The motor driver of the present invention includes: a half-bridge power output section, including a high-side transistor and a low-side transistor; a high-side driving circuit, driving the high-side transistor; and a control portion. When switching to a brake mode, the low-side transistor is turned on and the control portion turns off the high-side driving circuit.

A braking device for a moveable door leaf includes an electrical brake motor operated as a generator. The motor shaft of which is rotatable by a movement of the door leaf and which can be controlled for regulating the closing speed of the door leaf by an electronic evaluation and control unit, which is at least partially provided with electrical energy by an electric motor operated as a generator and/or by an additional generator unit. The electronic evaluation and control unit is operable in a sleep mode and is cyclically displaceable into a waking state depending on the closing speed of the door leaf. A door closer with a mechanical energy storage and a braking device is also disclosed.

A braking device for a movable door wing comprises an electric motor operated as a generator with a motor shaft which is rotatable by a movement of the door wing and which expends motion-dependent motor voltage at a contact pair, as well as a braking circuit upon which the motor voltage is applied or applicable and via which, the contact pair is short-circuitable in order to dampen a movement of the door wing. It is provided that the braking circuit comprises two anti-serially arranged field-effect transistors wherein their drain terminals are connected each to another contact of the contact pair and wherein their source terminals are connected to each other and preferably also connected to earth or a zero line, so that the contact pair is short-circuited depending on the switching state of the field effect transistors. Alternatively or in addition to such a design of the braking circuit, provision is made that the electric motor is designed as a brushless electric motor with a plurality of stator coils, in each of which an AC voltage is induced as a function of the movement of the door wing, and that one of the AC voltages induced in the stator coils is outputted at the contact pair. The braking circuit comprises a partial braking circuit to which the alternating voltage output on the contact pair is applied or can be applied and via which, the contact pair can be short-circuited.

A drive unit for closing a leaf of a door or a window comprises an energy accumulator for providing a closing force for closing the leaf, a damping device which counteracts the closing force and has an electric motor which can be operated as a generator and can be coupled to an actuating element of the drive unit, and a control device for controlling the electric motor. The control device is designed to determine a nominal path curve which indicates a position of the leaf or a closing speed of the leaf in dependence upon time, and to perform the control of the electric motor in order to damp the closing movement of the leaf on the basis of the established target path curve.