Wordlength estimation of digital controller synthesis for inkjet printer mechanism

Abstract

The effect of FWL on the coefficients in implementing digital controllers has been the subject of many recent studies. Especially, this issue is more severe in the low budget consumer electronic products. 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 to predict the required wordlength while designing the controller. In this paper, we will focus our study on an inkjet printing mechanism and investigate the effect of a controller without a proper wordlength. We will develop an algorithm to estimate the required resolution and apply the method to determine the required bits of wordlength for the controller designed.

Controller Synthesis of Tracking and Synchronization for Multiaxis Motion System

“…The ranges of these parameters can be estimated based on the nominal models of the individual axes in offline mode. With the nominal model, the required minimum resolution is 9 bits for the mantissa part for the sample rate of 500 Hz [26]. The resolution of current hardware setup is capable to adequately compensate the tracking performance.…”