Electromechanical drive system

An apparatus, comprising:

• a locking assembly having a locked state and an unlocked state;
• and
• a drive assembly operable to receive power from a power supply, and including:
• an electromechanical actuator operable upon receiving power to transition the locking assembly between the locked and unlocked states;
• an energy storage device electrically coupled to the electromechanical actuator and configured to store electrical power from the power supply when the drive assembly is electrically coupled to the power supply;
• and
• a control system configured to couple the drive assembly to the power supply in response to a first power condition to provide power to the drive assembly, and to thereafter transmit energy from the energy storage device to the electromechanical actuator upon the occurrence of a second power condition, wherein the second power condition is based at least in part upon a level of energy stored in the energy storage device;
• wherein the electromechanical actuator transitions the locking assembly from one of the locked state and the unlocked state to the other of the locked state and the unlocked state via power provided by the energy storage device during the second power condition.

An access control system selectively connectable to a power supply configured to supply power to the access control system, the access control system including a locked state and an unlocked state, the access control system comprising:

• an electromechanical actuator operable upon receiving the supplied power to transition the access control system between the locked and unlocked states;
• an energy storage device electrically coupled to the electromechanical actuator and configured to store electrical power from the power supply;
• and
• a controller electrically coupled to the electromechanical actuator and to the energy storage device, the controller configured to execute stored program instructions to:
• determine a power-good condition and a power-fail condition based on the voltage of the supplied power relative to a threshold power supply voltage;
• in response to the power-good condition:
• charge, with the supplied power, the energy storage device to a charge not less than a threshold charge, and thereafter powering, at least partially with the supplied power voltage, the electromechanical actuator;
• and
• transition, with the electromechanical actuator, the access control system between the locked and unlocked states, wherein the charge is not less than the threshold charge upon completion of the transition;
• and
• in response to the power-fail condition:
• power, with the energy storage device, the electromechanical actuator;
• and
• transition, with the electromechanical actuator, the access control system between the locked and unlocked states.