A refrigerator and a method for controlling an automatic door thereof are disclosed. The refrigerator includes a magnet mounted to a door and a magnetic field sensor mounted to a main body, so as to detect whether the door is open or closed and a pressed amount of the door according to a change in distance between the magnetic field sensor and the magnet even without a direct contact with the door. This can make appearance of the refrigerator beautiful and prevent an occurrence of deformation, deterioration, wear, and the like of a contact portion due to the contact with the door.

A method for operating a building closure having the shape of an overhead sectional door or of a garage door including at least one spring-loaded counterweight device and an electrical drive device is disclosed. A control unit simultaneously monitors the position of the building closure and a motor current for the drive device. When the building closure is in an open or a closed position, the motor current is reduced and maintained at a level to residually energize the drive device to reliably maintain the building closure in a desired position.

A system and method are disclosed for controlling the opening and closing of a closure panel for a vehicle. The system includes a power actuator having a motor for opening and closing the closure panel. A lift-assist member cooperates with the power actuator and is operated by a controller that controls the operation of the power actuator. A circuit monitors current draw of the motor and signals the controller when the current required for opening the closure panel exceeds a predetermined level to prevent operation of the power actuator. The position of the closure member may be monitored by an encoder, or angle sensor, associated with the motor to detect whether the closure member is falling and actuate a system that prevents rapid movement of the closure member.

An assembly includes a first structure, a second structure, a hinge that connects the first structure to the second structure for rotation of the first structure relative to the second structure around an axis, and a motion control component. The motion control component applies a feedback force to the hinge in response to an external force that is applied to the first structure. A magnitude of the feedback force is determined based on a current angular position of the first structure relative to the second structure.

A diagnosing device identifies a plugging operation period in which a plug door performs a plugging operation, the plug door having a guide roller attached thereto, the plug door being configured to perform an opening-closing operation and the plugging operation by allowing the guide roller to move along a guide rail; obtains drive information including a value representing at least one of a current value or a torque value of a drive unit, the drive unit being configured to drive the plug door; and diagnoses an abnormality in the guide roller or the guide rail based on the drive information observed during the identified plugging operation period.

A door assembly includes a first door skin, a second door skin spaced apart from the first door skin and a door operator disposed between the first door skin and the second door skin. An arm extends from the door operator. The door operator includes a motor moving the arm to move the door between a closed position and an open position and between the open position and the closed position. A current sensor generates a current signal corresponding to the current to the motor. A position sensor in communication with the door arm generates a position signal corresponding to the position of the door relative to the frame. A controller communicates with the sensor and the motor. The controller controls a motor current to the motor in response to the current signal and the position signal.

An open roof assembly for use in a vehicle roof comprises a moveably arranged closure member and a drive system operatively coupled to the closure member for moving the closure member along a motion trajectory. The drive system comprises an electric motor and a control unit for controlling operation of the electric motor. The control unit comprises a mathematical model describing at least a part of the drive system; model parameters and a motion reference field. The control unit is configured to update the model parameters based on a received value of a first drive system variable; determine a value of a second drive system variable using the mathematical model; determine a comparison value by comparing the value of the second drive system value and a corresponding reference value of the motion reference field; and detect presence of an obstruction if the comparison value lies outside a predetermined value range.

An opening and closing body control apparatus includes a motor driving unit and a control unit. The motor driving unit outputs a predetermined application voltage to the motor, based on a control command from the control unit. The control unit is configured to: when an opening and closing body reaches a first position in front of a closing-up position, set a target speed of the motor to a closing-up time target speed at which a torque required for closing-up the opening and closing body is secured, and perform feedback control on the motor driving unit; and when the opening and closing body reaches a second position closer to the closing-up position than the first position, stop the feedback control, and control the motor driving unit so that the application voltage of the motor at the time is held.

The present invention relates to a door operator and a method for set up of a door operator (1) comprising a drive unit (7), a user interface (8) and a control unit (9), which control unit (9) controls the value of the current applied to the drive unit (7) such that the door operator (1) employs a first speed trajectory corresponding to the value of the current when opening and/or closing a door leaf (2) connected to the door operator (1), the method comprising the steps of: detecting a first or a second mode of set up of the control unit (9), and in the first mode, receiving a value of the time for opening and/or closing the door leaf (2) from the user interface (8), calculating a value of the current that should be applied to the drive unit (7) during acceleration and braking to obtain said value of the time for opening and/or closing the door leaf (2), and setting the calculated value of the current in the control unit (9), such that the door operator (1) employs the first speed trajectory when opening and/or closing a door leaf (2) connected to the door operator (1) corresponding to said set value of the time, in the second mode receiving a value of the current that should be applied to the drive unit (7) when opening and/or closing the door leaf (2) from the user interface (8), setting the value of the current in said control unit (9) that should be applied to the drive unit (7) during acceleration and braking such that the door operator (1) employs the first speed trajectory when opening and/or closing a door leaf (2) connected to the door operator (1) corresponding to said set value of the current.

It is provided an assembly for adjusting an adjustment element relative to a stationary section of a vehicle, in particular a vehicle door relative to a vehicle body, which comprises a drive motor for electromotively adjusting the adjustment element, an electrically actuatable coupling device, a sensor device for measuring an acceleration value of the adjustment element during an adjustment of the adjustment element, and a control device for controlling the drive motor and the coupling device. The control device is configured to calculate a force value or torque value acting on the coupling device with reference to an acceleration value obtained via the sensor device during an adjustment of the adjustment element in a slip state of the coupling device.