Direct motion planning for vision-based control

R.S. Pieters, Z. Ye, P.P. Jonker, H. Nijmeijer

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10 Citaten (Scopus)
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Samenvatting

This paper presents direct methods for vision-based control for the application of industrial inkjet printing. In this, visual control is designed with a direct coupling between camera measurements and joint motion. Traditional visual servoing commonly has a slow visual update rate and needs an additional local joint controller to guarantee stability. By only using the product as reference and sampling with a high update rate, direct visual measurements are sufficient for controlled positioning. The proposed method is simpler and more reliable than standard motor encoders, despite the tight real-time constraints. This direct visual control method is experimentally verified with a 2D planar motion stage for micrometer positioning. To achieve accurate and fast motion, a balance is found between frame rate and image size. With a frame rate of 1600 fps and an image size of 160 × 100 pixels we show the effectiveness of the approach.
Originele taal-2Engels
Pagina's (van-tot)1282-1288
TijdschriftIEEE Transactions on Automation Science and Engineering
Volume11
Nummer van het tijdschrift4
DOI's
StatusGepubliceerd - 2014

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