JOURNAL OF COMPUTERS (JCP)
ISSN : 1796-203X
Volume : 3    Issue : 4    Date : April 2008

Wordlength Estimation of Digital Controller Synthesis for Inkjet Printer Mechanism
Hung-Ming Cheng and Georgia T.-C. Chiu
Page(s): 50-57
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Abstract
The effect of finite wordlength on coefficients in implementing discrete-time controllers has been a
subject of many recent studies. Especially, this issue is more severe in the low budget consumer
electronic products when a faster sample rate is desired. To save the cost of development, most of
the manufacturers applied cheap processors on those kinds of products. Therefore, it is desired to
develop an estimation method to predict the required wordlength while designing a controller. In
this paper, we will focus our study on the controller synthesis for an inkjet printing mechanism and
investigate the effect insufficient wordlength. We will also develop an algorithm to estimate the
required resolution and apply the method to determine the required bits of wordlength for the
controller designed.

Index Terms
finite wordlength, digital controller, inkjet printer