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- W827136204 abstract "Minimizing Temperature Droop and Power Line Flicker in a Lamp Heated Xerographic Fusing System Jeffrey N. Swing Supervising Professor: Dr. Tuhin Das Fuser roll temperature is one of the most important parameters affecting the performance of a xerographic fusing system. Temperature must be tightly controlled to ensure consistency of image permanence and quality, usually with a heating lamp. To reduce lighting flicker, International Electrotechnical Commission (IEC) regulations limit the effects that the heating lamp can have on a mains power system. To meet these constraints, power delivery to the lamp is slowed down and transient performance of the temperature control system is reduced. This is especially prevalent at the start of a print job where the thermal system transitions from a low power state to a high one. An existing thermal model of a fusing system is extended to cover a range of printable media. The thermal and electrical behaviors of the heating lamp and power system are modeled. The fast power system model is solved ahead of time and results stored in a lookup table for use with the slower lamp and fuser thermal models. With a complete thermal and electrical iii model, the variability of the temperature transients observed experimentally is replicated. With the system characterized and with the development of a validated model, an open loop optimal control boundary value problem is formulated to minimize temperature transients while meeting the electrical constraints. After finding the solution for the nominal startup sequence, a second level optimization is carried out with . A control trajectory is found for the nominal case that narrowly misses the performance objective at the beginning of the job under the stress loading condition. Improving machine timing does not yield significant improvement. A simple feedforward controller is synthesized to use the optimal control results in a practical controller. Knowledge of the system is still needed to find the power level the system must transition to." @default.
- W827136204 created "2016-06-24" @default.
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- W827136204 date "2011-01-01" @default.
- W827136204 modified "2023-09-27" @default.
- W827136204 title "Minimizing Temperature Droop and Power Line Flicker in a Lamp Heated Xerographic Fusing System" @default.
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- W827136204 hasPublicationYear "2011" @default.
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