A door closer diagnostics system including a door closer, a server, and a mobile device having a display and at least one sensor. The mobile device is configured to (i) generate, by the at least one sensor, motion data indicative of motion of the door as the door is moved from an open position to a closed position, and (ii) transmit the motion data to the server. The server is configured to analyze the motion data to (i) determine a duration the door was in each of a plurality of door movement zones between the open and closed positions, (ii) determine at least one adjustment to the door closer for a successful installation of the door closer based on the duration the door was in each of the door movement zones, and (iii) transmit at least one installation instruction corresponding with the at least one adjustment to the mobile device.

A door closer diagnostics system including a door closer, a server, and a mobile device having a display and at least one sensor. The mobile device is configured to (i) generate, by the at least one sensor, motion data indicative of motion of the door as the door is moved from an open position to a closed position, and (ii) transmit the motion data to the server. The server is configured to analyze the motion data to (i) determine a duration the door was in each of a plurality of door movement zones between the open and closed positions, (ii) determine at least one adjustment to the door closer for a successful installation of the door closer based on the duration the door was in each of the door movement zones, and (iii) transmit at least one installation instruction corresponding with the at least one adjustment to the mobile device.

A method according to one embodiment includes generating, by at least one sensor, motion data indicative of motion of a door having a door closer as the door is moved from an open position to a closed position, analyzing the motion data to determine a duration the door was in each of a plurality of door movement zones between the open position and the closed position, determining at least one adjustment to the door closer for a successful installation of the door closer based on the duration the door was in each of the plurality of door movement zones, and displaying at least one installation instruction corresponding with the at least one adjustment on a graphical user interface of a mobile device.

A method according to one embodiment includes generating, by at least one sensor, motion data indicative of motion of a door having a door closer as the door is moved from an open position to a closed position, analyzing the motion data to determine a duration the door was in each of a plurality of door movement zones between the open position and the closed position, determining at least one adjustment to the door closer for a successful installation of the door closer based on the duration the door was in each of the plurality of door movement zones, and displaying at least one installation instruction corresponding with the at least one adjustment on a graphical user interface of a mobile device.

An actuator control method and an actuator control device that incorporate an element of feedback control in time optimal control, including: a calculation step of calculating a switching time at which an acceleration output is switched to a deceleration output and an end time of the deceleration output expressed by time elapsed from a calculation time at which calculation for control is performed using a maximum acceleration and a maximum deceleration, which are measured in advance, at the time of the maximum output of control force of an actuator; a control output step of setting the control force of the actuator to a maximum acceleration output from the calculation time to the switching time, setting the control force of the actuator to a maximum deceleration output from the switching time to the end time, and ending the output of the control force at the end time, and an update step of calculating and updating the switching time and the end time by repeating the calculation step at each preset time.