Subjects: Geosciences >> Space Physics submitted time 2016-05-13
Abstract: A measurement and control system of three-dimensional(3D) position information of electrostatic levitation based on position sensitive detector(PSD) is setup and structure of PSD and position measurement and control principle of electrostatic levitation are analyzed.Output signal of PSD is processed by STC12C5A60S2 MCU,corresponding relationship between suspension sample position information and output voltage of PSD is obtained,and communication between MCU and upper PC,data analysis and processing,and position control on levitation sample are realized.Use zirconium materials to carry out suspension experiment and test results indicate that the system can realize non-contact measurement of sample position information and stable suspension of sample,and it has advantages of stable operation and reliable detecting data,and so on,and this measurement system laid foundation for material suspended heating and undercooling research.
Peer Review Status:Awaiting Review
Subjects: Geosciences >> Space Physics submitted time 2016-05-13
Abstract: To meet the needs of image stabilization system of domestic solar observatory imaging instrument, a position sensitive detector(PSD)-based electronics system design for high-precision sun sensor is proposed.Concrete measures are put forward to improve the sensitivity and reduce system noise.At presemt,level of the system noise is lower than 4 nA,and has high resolving power of 0.3 in center area of working scope,can cooperate with tip-tilt mirror to make up this system image stabilization system, which serve for Kua Fu and SPORT project and other solar imaging instruments which has high resolution imaging demand.
Peer Review Status:Awaiting Review