Patent ID: 8797199

Claim:
A system, comprising: an analog actuated device configured to control a monitored condition of a system; a measuring device configured to measure values for the monitored condition of the system; and a control device coupled to the analog actuated device and the measuring device, wherein the control device is configured to: repeatedly adjust the analog actuated device based on the monitored condition and a setpoint value, wherein to adjust the analog actuated device the control device is further configured to: receive a current value for the monitored condition from the measuring device; compare the current value with the setpoint value for the monitored condition to obtain an error value; convert the error value into a digital pulse time value representing a control correction for the analog actuated device to compensate for the error value; and output, to the analog actuated device, an analog voltage value based at least in part on a previously output voltage value and the digital pulse time value.