| The 1m New Vacuum Solar Telescope(NVST) is the primary facility of Fuxian Solar Observatory(FSO), and the main scientific goals are high resolution imaging and spectral observation of chromosphere and photosphere, including their fine structure of magnetic field on the solar active region. Two vertical grating spectrometer(multi-wave spectrometer & high dispersion spectrometer) placed in the hanging bracket below the rotating platform, aims to observe the sun spectrum finely, on the base of these equipment and instruments, designed a slit scanning system placed above the rotating platform. Aim to parallel moving the light path into spectrograph system decorate after the slit, use an electric lifting platform and four plane mirrors can realize this purpose. Based on this slit scanning equipment, spectral scanning observation can be realized. A polarization analyzer is placed front the slit, above the rotating platform, and more, a set of polarization calibration instrument is design and installation in the telescope lens barrel, to compensate the instrumental polarization and realize a high-precision measurement.For the spectral scanning system and polarization measurement, their electric actuator automatic motion control is needed when observation system at working, that is this paper mainly content. Firstly, for a short introduce about the spectral scanning system and polarization measuring system, and describe the basic motion control requirements. And then, expound the control software design to realize these requirements, also introduce the realization of these instruments’ remote control design based on windows socket communication. Finally, describe a software design for spectral scanning, combined with the control of slit scanning equipment and CCD camera, realize the scanning spectrum image acquisition. Related software has been used for observation, consider into subsequent observation system upgrades develop, some improvement methods on these software design also proposed. |
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