Patent attributes
The claimed method and system may measure or receive signature data from a process control device, such as a valve, and analyze the data against user configurable boundaries and settings to determine if there is a problem with the operation of the control device. One or more signature graphs that were measured from a prior period may be displayed to a user to assist the user in configuring the characteristic boundaries and settings. The claimed method and system may evaluate a current signature graph against a user configured boundary to determine, among other characteristics, whether a maximum or minimum friction or torque threshold has been crossed, whether the integrity of an actuator or valve shaft has been compromised, and whether valve stick-slip occurrences are within a tolerance level.
