Patent ID: 7162169

Claim:
A control system for mitigating transients in machine performance due to periodic or occasional maintenance action taken on a machine, wherein the machine performance is evaluated based on process output variables, the system comprising: a controller that monitors the process output variables indicative of the machine performance and adjusts machine inputs, including magnetic roll bias (Vmag), photoreceptor charge bias and ROS laser intensity, to achieve a desired level of machine performance, the controller monitors the process output variables indicative of the machine performance prior to, during, and immediately after the periodic or occasional maintenance action and adjusts the machine inputs to compensate for the transients in machine performance due to the maintenance action, and the controller operates under a cycle-up convergence mode and a maintenance mode, wherein the controller operates such that, in the cycle-up convergence mode, the controller completes one or more iterations at a cycle-up, allowing xerographic setpoint/Vdm blip transient mitigation convergence.