What question did this study set out to answer?

To develop a load-dependent friction model for mechanical transmissions that improves feedback stability.

December 31, 2002

A load-dependent transmission friction model: theory and experiments

Key Points

To develop a load-dependent friction model for mechanical transmissions that improves feedback stability.
Presented a theoretical framework for the friction model incorporating load dependence, backlash, and tooth preload.
Conducted experiments on a worn gear drive to validate the model.
Experimental data aligns well with the model's predictions, showing improved accuracy in understanding friction behavior.
The incorporation of load dependence enhances the model's applicability in real-world mechanical systems.

Abstract

Mechanical transmission dynamics are a major source of motion disturbances and prospective instability in feedback. To overcome this problem, feed-forward compensation is often added to the control algorithm requiring an accurate friction model. A load-dependent friction model based on a wedge-like planar transmission is presented. The effects of load dependence, backlash, and tooth preload can be incorporated into the model. Derivation of the model is presented together with the results of experiments performed on a worn gear drive and a discussion of how the data fits the model.>

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