Friction Transmissions of Low-Torque Motors

One of the most complex problems of many optical-mechanical devices is to give a slow rotary motion with a high degree of smoothness to some elements of  optical system. In this case the use of gears, including wave gears, is not possible because of their typical cyclic errors in rotation. The article proves that the alternative to gears in similar motors is the use of friction transmissions. Kinematic schemes of two types of friction transmissions are given that allow receiving a high smoothness of a rotary motion. Computational models for the defining the transmission ratio of friction transmissions are also presented. It was described how the control of rotary motion parameters created by said motors was exercised.

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