Modeling and Control of Thermal Printing

被引:7
|
作者
Nolde, Kristian [1 ]
Morari, Manfred [1 ]
机构
[1] ETH, Automat Control Lab, CH-8092 Zurich, Switzerland
关键词
Lookup table; model predictive control; printhead control; switched system; thermal printing; Wiener model;
D O I
10.1109/TCST.2009.2017025
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, we present the development of an optimal controller for thermal printheads. A first-order linear system and a nonlinear output mapping with stochastic noise is proposed as a model of the printing dynamics. The model parameters are identified and an optimal control problem is formulated to determine the printhead input. The control algorithm is successfully tested on a standard thermal printer. A sensitivity analysis is performed by simulations and experiments to analyze the printing quality on varying setups with different printheads, printing media and ribbons. A tuning strategy is derived to adapt to changing setups without having to recompute an optimization problem. The performance of the control system for a wide range of operating systems is observed in experiments. Comparing the proposed controller to a current control implementation shows a significant quality gain in barcode readability (ISO/IEC 15416).
引用
收藏
页码:405 / 413
页数:9
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