Telescope rolling friction drive positive pressure dynamic correction system

Abstract

This invention discloses a telescope's dynamic correct system that uses friction to drive positive pressure. The friction set is made up of a driven wheel and an action wheel. The pressure electric engine brings positive pressure on action wheel through the ball-bearing feed screw nut set and the spring. The character is that it is set with the positive pressure controlet, which is set with the controlling machine. The controlling machine is connected with the data collecting card. The driven wheel is set with the driven wheel moment sensor while the action wheel is set with the action one. These two sensors' exports are connected to the data collecting card of the controlling machine. The data wire, which is installed on the code disc of pressure electric engine, is connected to the data acquisition card. The data is feed back to controlling system to form the close-ring controlling system. This invention can correct positive pressure at real time; the friction dynamic system works under the big load all the time; it also can decrease the requirement to the parts' performance, and then reduces the cost. It avoids the friction set surface slipping, and then avoids the field of view whipping or slipping and the set of axes shaking, so that, it increases the stability.

Description

technical field [0001] The invention relates to a continuing device on an astronomical telescope, in particular to a dynamic correction system for positive pressure in a rolling friction transmission of the telescope. By adopting this correction system, the positive pressure in the process of friction transmission can be adjusted in real time according to the actual situation of the load, and the telescope can work stably even under external interference. Background technique [0002] The rolling friction transmission is under the action of positive pressure, and the friction torque generated by the driving wheel through the positive pressure drives the driven wheel to rotate. Cylindrical rolling friction transmission has been applied in large astronomical telescopes due to its simple structure, no backlash, relatively simple installation, commissioning and maintenance. However, since rolling friction transmission is different from gear transmission, worm gear and other mec...

AI Technical Summary

Problems solved by technology

The consequence of this is that the friction pair and the transmission shaft system have been working under a large positive pressure. In order to be able to withstand a large load, the performance of the friction pair, the rotating shaft, the support bearing and other components must be improved, which increases the manufacturing cost. cost; in addition, the above components have been working under a large load, which accelerates the wear of moving parts and affects the stability of the shaft system

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