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In this paper, a novel 2-D Schur algorithm is developed as a natural extension of the 1-D Schur recursion. This lattice structure is based on Parker and Kayran's four-field lattice approach. Starting with given 2-D autocorrelation samples, four quarter-plane gapped functions are generated. Their linear combination is used to satisfy gap conditions...
Selbstmordattentate werden seit jeher von Bildern begleitet und durch diese bestimmt. Von Märtyrerpostern über Videotestamente bis hin zu Computersimulationen und Livestreams vom Tatort – die Bildproduktionen der Milizen sind auf vielfältige Weise an der Tat beteiligt und müssen als Akteure im politischen Feld ernstgenommen werden. Verena Straub ze...
Наведено результати модулювання оптичних систем з абераціями для випадків дифузного і дзеркального відбивання, та з врахуванням і без врахування кривизни сітківки. Показано, що методом подвійного проходження при врахуванні киривизни сітківки можливо визначити всі типи аберацій, але без врахування кривизни такий розрахунок неможливий. Цей факт поясн...
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... [6], taşlama paylı düz dişli pinyon takımla standart yerleştirmeli ve profil kaydırmalı imalatın matematik modelini sunmuştur. Fetvacı [7], takım uç geometrisinin imal edilen dişli üzerindeki etkilerini incelemiş ve asimetrik dişli pinyon-tipi takımlarda mümkün olan uç geometrilerini belirtmiştir. Fetvacı [8], Chang ve Tsay'in modelini, evolvent helisel dişli çarkların yuvarlak uçlu pinyon-tipi takımla imalatına uyarlamıştır. ...
In this paper, the authors evaluate the influence of the centrodes coefficients on the gear ratio function characteristics of the compound non-circular gear (CNCG) train formed by two pairs of external non-circular gears (NCGs). First, a mathematical model describing the mating centrodes for the CNCG train has been establishing. From there, evaluate the influence of centrode coefficients μ1 and μ2 of NCGs in the CNCG train on the gear ratio function characteristic for the CNCG train. A design of a CNCG train with an improved cycloid tooth profile by a rack cutter. The evaluation results show that when increasing μ1, transmission size tends to decrease, but the speed and torque variation range rises to 54.31%. While reducing μ2, the speed variation and torque range increase, but the mating centrodes of NCGs 4 is a concave curve that cannot gear shaping by a rack cutter or hob cutter must be by shaper cutter.
The quality and performance of gears, especially in aerospace applications, need to be assured. As the manufacturing process has a significant influence on the performance of the gear, any occurring error during the manufacturing process must be detected. In this paper, a new method is presented that allows the usage of servo traces of the manufacturing machines to simulate the actual process kinematics. This method allows a more precise simulation and therefore more precise prediction of the quality of manufactured gears.
This paper studies the computerized tooth profile generation of involute gears cut with rack-type cutters. Based on the theory of gearing the mathematical models of generating cutter with asymmetric involute teeth and generated involute gears are given. Beveloid (conical involute) gears are considered for a generalized type of involute gearing for connecting parallel shafts. Effective limits of involute design parameters that determine the actual tip circle radii of the generated gears are investigated. An approach based on contact path of mating gears is proposed to eliminate further operations for standard value of tip circle radius. Computer simulation programs are developed to obtain graphs of generating tools and generated teeth surfaces.
