A door closer with an electric motor-assisted closing feature, that may generate its own power to assist in closing, and controls the speed of opening and closing of the door during generation is disclosed. Embodiments of the present disclosure are realized by a motorized door closer that electrically creates a latch boost force for a closing door. The door closer includes a motor disposed to operatively connect to a door so that the door will be moved toward closed when the motor moves, and a position sensor to determine a position of the door. A processor is programmed to exert a closing force on the door in the latch boost region or when it otherwise detects that a motor assist is needed.

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.

A diagnostic apparatus acquires data for a motor that drives a door in a train carriage, in at least one of a case where the door is opened at a second speed lower than a first speed at which a passenger is to get on and off the train carriage, or a case where the door is closed at the second speed, the data relating to the driving of the door. The diagnostic apparatus diagnoses an abnormality in a traveling resistance of the door, based on the acquired data.

Provided is a control device for an opening and closing member configured to drive a driving source of an opening and closing member that opens and closes an opening section of a vehicle, and the control device for an opening and closing member includes a power generation detector configured to detect power generation of the driving source, and a controller configured to control driving of the driving source, wherein the controller is changed to a sleep state upon stoppage of the opening and closing member, and is activated from the sleep state to control a braking of the driving source when the power generation detector detects power generation of the driving source.

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.

The invention relates to a drive arrangement for the motorized movement of a tailgate (2) of a motor vehicle, wherein at least one drive unit (3, 4) is provided, having two drive connections (3a, 3b; 4a, 4b) for channeling out drive unit power, wherein a first drive unit (3) is motor and spring-operated and has a drive unit motor (5) as well as a drive unit spring (6), respectively acting on the two drive connections (3a, 3b) associated with the first drive unit (3), wherein the first drive unit (3) comprises a movement sensor (7) for generating a sensor signal, representing movement information regarding a movement between the drive connections (3a, 3b) of the first drive unit (3), wherein a second drive unit (4) is solely spring-operated and has a drive unit spring (8), acting on the two drive connections (4a, 4b) associated with the second drive unit (4), wherein a drive unit controller (9) is provided, which detects a predetermined deviation of the sensor signal (S) of the movement sensor (7) from a predetermined normal signal corresponding to the normal condition as an error condition and upon detecting an error condition carries out an error routine.

A movable barrier system allows for varying a linear actuator speed to account for speed variances caused by the physical configuration of the system. An example system includes a processor configured to variably control an operation speed of the linear actuator as the linear actuator moves the movable barrier between a first position of the movable barrier and a second position of the movable barrier as a function of a location of a movable barrier pivot connection relative to a linear actuator pivot connection. The function may be a function of a ratio of a distance from the linear actuator pivot connection to a fixed point and a distance from the movable barrier pivot connection to the fixed point. The function may be calculated by the processor or accessed by the processor according to information about the physical configuration of the system.

A door closer with an electric motor-assisted closing feature, that may generate its own power to assist in closing, and controls the speed of opening and closing of the door during generation is disclosed. Embodiments of the present disclosure are realized by a motorized door closer that electrically creates a latch boost force for a closing door. The door closer includes a motor disposed to operatively connect to a door so that the door will be moved toward closed when the motor moves, and a position sensor to determine a position of the door. A processor is programmed to exert a closing force on the door in the latch boost region or when it otherwise detects that a motor assist is needed.

A door closer with an electric motor-assisted closing feature, that may generate its own power to assist in closing, and controls the speed of opening and closing of the door during generation is disclosed. Embodiments of the present disclosure are realized by a motorized door closer that electrically creates a latch boost force for a closing door. The door closer includes a motor disposed to operatively connect to a door so that the door will be moved toward closed when the motor moves, and a position sensor to determine a position of the door. A processor is programmed to exert a closing force on the door in the latch boost region or when it otherwise detects that a motor assist is needed.

A movable barrier system allows for varying the linear actuator speed to account for speed variances caused by the physical configuration of the system. An example system includes a processor configured to variably control operation speed of the linear actuator when it moves a movable barrier between a first position of the movable barrier and a second position of the movable barrier as a function of location of the movable barrier pivot connection relative to the linear actuator pivot connection. The function may be a function of a ratio of a distance from the linear actuator pivot connection to a fixed point and a distance from the movable barrier pivot connection to the fixed point. The function may be calculated by the processor or accessed by the processor according to information about the physical configuration of the system.