Sensing and control of access control devices

A method of operating an access control device, the method comprising:

• supplying a first current to a motor of the access control device, wherein the motor is operably coupled with a locking member and a target component, wherein the motor drives the locking member from a start position to a blockage position in response to receiving the first current, wherein the blockage position is located between the start position and a desired position, and wherein supplying the first current comprises limiting the first current to a first threshold;
• generating, by a sensor of the access control device, a position signal indicative of a location of the target component when the locking member is in the blockage position;
• operating the motor to move the locking member from the blockage position toward the start position and away from the desired position;
• and
• supplying a second current to the motor to drive the locking member toward the blockage position and the desired position, wherein supplying the second current comprises limiting the second current to a second threshold greater than the first threshold;
• wherein one of the start position or the desired position is an unlocking position corresponding to an unlocked state of the access control device;
• and
• wherein the other of the start position or the desired position is a locking position corresponding to a locked state of the access control device.

A method of operating an access control device, the method comprising:

• operating a motor with an allowable current, thereby driving a locking member in a first direction from an initial position toward a desired position, wherein the locking member is blocked from moving in the first direction beyond a blockage position;
• with the locking member in the blockage position, detecting a location of a target component operably connected with the locking member, the target component having a target location corresponding to the blockage position;
• operating the motor to drive the locking member in a second direction opposite the first direction, thereby moving the target component away from the target location;
• and
• while operating the motor to drive the locking member in the first direction toward the blockage position:
• monitoring the location of the target component;
• and
• as the target component approaches the target location, supplying the motor with a boost current to drive the locking member beyond the blockage position and toward the desired position.

An access control device, comprising:

• a lock member having an initial position and a desired position;
• a target component operably connected with the lock member;
• an electromechanical actuator operably connected with the lock member and configured to drive the lock member between the initial position and the desired position;
• and
• a controller configured to control operation of the electromechanical actuator, the controller configured to:
• operate the electromechanical actuator to drive the lock member in a first direction from the initial position toward the desired position;
• detect a target location of the target component corresponding to a blocked position of the lock member between the initial position and the desired position;
• in response to the detected target location corresponding to the blocked position of the lock member, move the lock member in a second direction opposite the first direction toward the initial position and away from the desired position which displaces the target component away from the target location;
• operate the electromechanical actuator to drive the lock member in the first direction toward the blocked position;
• monitor a location of the target component and as the target component approaches the target location, supply the electromechanical actuator with a boost current to drive the lock member beyond the blockage position and toward the desired position.