Dynamics Modeling and Analysis a New Mechanism for Automatic Control of Angular Velocity of a Rotary Axis

علوم کاربردی و محاسباتی در مکانیک

Article 1, Volume 26, Issue 2 - Serial Number 12, September 2015, Pages 1-13   

Document Type: Original Article

DOI: 10.22067/fum-mech.v26i2.31384

Authors

Khadijeh Faraji Mahyari; Ali Jafari^* ; Seyed Saeid Mohtasebi; Ali Hajiahmad

University of Tehran

Abstract

Actually a new mechanism presented for automatic control of angular velocity of a rotary axis is a complete power transmission system. This system can produce an almost constant output speed for different values of the angular velocity input, and can be employed as a suitable coupling between tractor P.T.O. shaft and agricultural machineries. This system is quite mechanical. In this study, equations of force, torque and power of the mechanism were extracted and mechanism performance were modeled. The equations of motion of mechanism are non-holonomic dynamical and differential algebraic equations with an index of three. Modeling results showed that changing the input velocity in the range of -30% to 50%, variations of output velocity would less than 10%.

Keywords

Angular Velocity; Planetary Gear Set; Nonholonomic System; Automatic Control; Differential-Algebric Equation

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