Analysis of Non Linear Spring Characteristics for Motion Transmission Mechanism

Evaluation of Influences by use of Non Linear Spring Test Unit

Abstract

It is important to eliminate the non linear spring characteristics for positioning accuracy as like as the mechanical hysteresis characteristics. So that, the characteristics has to be analyzed to improve the dynamic performaces. At first, the “Non Linear Spring Test Unit” is developed, which consists of two linear spring characteristics parts and mass. The magnitude of Non linearity is defined which evaluates the influences on these dynamics. Then these in fluences are tested using this unit, it is proved that the non linear spring characteristics make worse on positioning accuracy at the mechanical resonance frequency, and the allowable non-linear spring magnitude can be quantified as like as the mechanical hysteresis characteristics.