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Fuzzy pole placement for speed control in D.C. motor
, Article Recent Advances in Electrical and Electronic Engineering ; Volume 11, Issue 1 , March , 2018 , Pages 15-20 ; 23520965 (ISSN) ; Mohammad Shahri, A ; Mousavi Mashhadi, S .K ; Samsaam, S ; Sharif University of Technology
Bentham Science Publishers B.V
2018
Abstract
Background: in this paper, fuzzy pole placement control approach is proposed to control the speed of D.C motor. In this method, state feedback gain is tuned by fuzzy logic. Methods: In conventional pole placement control, constant gain is considered to insert the poles of system in the desired place. Therefore, unnecessary effort is appliedto the system, and the system implementation becomes costly. In contrast, in fuzzy pole placement control, poles of system alter gradually based on the performance of system and are settled in desired point causing the system to display apposite performance. In other words, in conventional pole placement, a determined pair of poles exists, whereas in fuzzy...
Chromosome image contrast enhancement using adaptive, iterative histogram matching
, Article 2011 7th Iranian Conference on Machine Vision and Image Processing, MVIP 2011 - Proceedings, 16 November 2011 through 17 November 2011 ; 2011 ; 9781457715358 (ISBN) ; Mousavi, H. S ; Khalaj, B. H ; Sharif University of Technology
2011
Abstract
Vivid banding patterns in medical images of chromosomes are a vital feature for karyotyping and chromosome classification. The chromosome image quality may be degraded by many phenomenon such as staining, sample defectness and imaging conditions. Thus, an image enhancement processing algorithm is needed before classification of chromosomes. In this paper, we propose an adaptive and iterative histogram matching (AIHM) algorithm for chromosome contrast enhancement especially in banding patterns. The reference histogram, with which the initial image needs to be matched, is created based on some processes on the initial image histogram. Usage of raw information in the histogram of initial image...