OPEN FORCE CONTROL IN SLIDER-CRANK MECHANISMS

Year 2016, Volume: 57 Issue: 675, 20 - 29, 28.04.2016

Mehmet İlteriş Sarıgeçili İbrahim Deniz Akçalı

Abstract

One of the applications of slider-crank mechanisms is feeding systems whereby a constant pushing
force is required. The basic problem is that pushing force changes with crank positions in response to
a weight applied at the crank-connecting link joint. In this study, two methods are developed to hold
the pushing force around a desired value within a working interval. In the first method, manual control process by which an almost constant pushing force is obtained independent of crank position and
errors resulting therefrom are shown. In the second method, a controller design required for an open
force control process and results of related error analysis are explained. An approach to minimize error
is also presented. The effectiveness of the methods is demonstrated on numerical examples.

Keywords

Slider-crank mechanisms, force control, open control, error state

KRANK-BİYEL MEKANİZMASINDA AÇIK KUVVET KONTROLÜ

Abstract

Krank-biyel mekanizmalarının uygulamalarından birisi de pistona sabit itme kuvvetinin uygulandığı besleme sistemleridir. Bu tür sistemlerde temel sorun, krank–biyel mafsal noktasında etkiyen bir
ağırlık kuvvetine karşılık, krank konumlarına bağlı olarak itme kuvvetlerinin çok hızlı değişmesidir.
Bu çalışmada, belli bir çalışma aralığında itme kuvvetinin istenen sabit değerde tutulması için iki
yöntem gösterilmiştir. İlk yöntemde, krank açısından bağımsız sabit itme kuvvetinin elde edilmesi
için manuel kontrol süreci ve bundan kaynaklanan hata oranları gösterilmiştir. İkinci yöntemde, açık
bir kuvvet kontrol süreci içindeki denetleyici tasarımı ve ilgili hata analizi sonuçları açıklanmıştır. Ayrıca hatayı minimize eden bir yaklaşım sergilenmiştir. Sayısal örneklerle de yöntemlerin etkinlikleri
kanıtlanmıştır.

Keywords

Krank-biyel mekanizması, kuvvet kontrolü, açık kontrol, hata durumu

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