Control of Driving Torque Wave-form for Link Mechanisms

Abstract

The driving torque of link mechanism generally varies with time, though periodically. it usually includes higher harmonic components. It is the purpose of this study to work out a method for obtaining specified driving torque wave-forms through redistributions of masses of links without changing motions of mechanisms. This paper presents a new technique of this method. The elimination of the higher order frequency components above the third order of the driving torque is tried on a crank-lever mechanism by using this technique. Calculated results are shown about specified torque wave-forms comprising up to the second order components or only the second order component. Experimental results on a mechanism with only the second order component are discussed and compared with the calculated results.