Positive optical controller of reflective schmidt correcting plate

Abstract

An active optical controller for reflecting Schmitt correcting sheet includes a main control computor, six actuator controllers and two submirror control units, among which a submirror is connected with a submirror control unit, end actuator is connected with a actuator controller, the main control computer is ued as an active optical controller to form an upper level control and to connect to the submirror control unit by Ethernet interface, the submirror control unit forming a middle layer control is connected with all the actuator controllers by the on-site bus, and monitors and controls the operation state of the submirror through the information transmitted by the on-site bus. The actuator controller made by shift and force actuator controllers forms the bottom level control to use the microprocessor as a core with on-site bus interface.

Description

technical field [0001] The invention relates to the field of research and application of astronomical telescopes, in particular to an active optical electronic control device for reflective Schmidt correction plates of a multi-target optical fiber spectrum astronomical telescope with a large sky area. Background technique [0002] A practical and key technology in the national "Ninth Five-Year Plan" major project "Large Sky Area Multi-objective Optical Fiber Spectroscopic Telescope" (LAMOST) - the optical system is the core of the entire telescope. The two mirrors (MA, MB) in the LAMOST optical system are spliced ​​by hexagonal sub-mirrors, and the reflective Schmidt correction plate (MA) is composed of 24 sub-mirrors with a diagonal diameter of 1.1 meters and a thickness of 2.5 cm. , the precise aspheric surface shape of MA is realized and guaranteed by the active optical technology of thin mirror surface (active control of mirror surface shape) and split mirror surface (ac...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the functional block diagram of the MA control system scheme is as follows figure 1 As shown, the active optical controller is connected with the force actuator and the displacement actuator through the universal digital interface and the user interface controller. All the force actuators are controlled by a unified force actuator controller. Each force actuator The control lines and signal lines of each displacement actuator are connected to the force actuator controller. All displacement actuators are controlled by a unified displacement actuator controller. The control line and signal line of each displacement actuator are connected to the displacement actuator. The disadvantage is that it is not easy to maintain and upgrade, the anti-interference ability is poor, and there are many hardware connections.

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