Patent ID: 11870280
Assignee: JOHNSON CONTROLS TYCO IP HOLDINGS LLP
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 14:
15. A failsafe device assembly, comprising:
an actuator;
a capacitor; and
a processing circuit comprising a processor and memory, the memory having instructions stored thereon that, when executed by the processor, cause the processing circuit to:
measure an initial voltage across the capacitor in an initial physical position of the actuator;
measure a final voltage across the capacitor in a final physical position of the actuator;
determine an amount of energy required to return the actuator to a failsafe physical position based on the initial voltage and the final voltage;
measure an effective capacitance of the capacitor;
compare the amount of energy to the effective capacitance to determine an operational parameter of the actuator; and
operate the actuator according to the operational parameter.