Two-degree-of-freedom tandem scanning platform

Abstract

The invention discloses a two-degree-of-freedom tandem scanning platform. The scanning platform comprises a base, platforms arranged in the base and motors for driving the platform, wherein the platforms comprise a follow-up platform and a moving platform; the motors comprise a follow-up platform motor and a moving platform motor; the moving platform is arranged at the top of the base through moving platform rotating shafts on the two ends of the moving platform; the follow-up platform is arranged below the moving platform through follow-up platform rotating shafts on the two sides of the moving platform; the moving platform driving motor of the moving platform is arranged on the surface of the moving platform; and the follow-up platform driving motor of the follow-up platform is arranged at the bottom of the base. According to the invention, the moving platform and the follow-up platform move together, and are provided with two mutually-perpendicular freedom configurations, so that coupling between the moving platform and the follow-up platform is avoided, the control precision of the moving platform and the follow-up platform is improved, the reduction ratio of a moving platform gear mechanism to a follow-up platform gear mechanism becomes controllable, the output speed and output torque of the moving platform and the follow-up platform become controllable, and the application range of the moving platform and the follow-up platform is widened.

Description

technical field [0001] The invention relates to the field of precision platforms, in particular to a two-degree-of-freedom serial scanning platform. Background technique [0002] Scanning platform is a common precision instrument, which is widely used in laser processing, astronomical observation, radar and other fields. Traditional scanning platforms often adopt a single-axis form, such as the optical scanning mirror of Singapore Xinte Optoelectronics Technology Co., Ltd. The various degrees of freedom of the platform in this configuration are not connected by mechanical device structure, but by virtual coupling realized by the transmission and reflection of light, so it can only be applied to optical scanning, the application range is limited, and the requirements for control are very high . In addition, some domestic research institutions have provided scanning platforms for parallel mechanisms: such platforms usually consist of bases, branch chains, and moving platform...

AI Technical Summary

Problems solved by technology

Since the rotation of the moving platform is achieved through the expansion and contraction of the branch chain, when the area of ​​the moving platform is large, the movement stroke and driving torque of the branch chain need to be significantly increased, and the scanning frequency of the platform is severely restricted. The inherent shortcoming of the small movement space of the parallel mechanism makes the scanning platform of the parallel mechanism not very practical

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