Zhang Peijie, Song Kefei. Design of high accuracy temperature control system of auroral imager light filter system[J]. Infrared and Laser Engineering, 2014, 43(S1): 177-182.
| Citation:
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Zhang Peijie, Song Kefei. Design of high accuracy temperature control system of auroral imager light filter system[J]. Infrared and Laser Engineering, 2014, 43(S1): 177-182.
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Design of high accuracy temperature control system of auroral imager light filter system
- 1.
Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China
- Received Date: 2014-10-15
- Rev Recd Date:
2014-11-20
- Publish Date:
2015-01-25
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Abstract
A high-accuracy temperature control system for light filter of auroral imager was proposed in the paper. Platinum resistance was used as the temperature sensor, and the temperature measuring circuit can collect the temperature with an accuracy of 0.05 ℃. A DSP was used as the main control unit, which implemented a full digital control system. The heater plate used constant current source circuit as its driving circuit, implementing the high precision and low noise heating power control. The mathematical model of the system was established, and the key parameters were identified from step response curves of the practical light filter system. The controller was designed based on the identified model and simulation results show the performance of the designed controller. Then, the parameters of the controller were tuned in experiments and experiment results show that better performance is obtained using optimized controller. At last, experiments results were discussed and show that high accuracy temperature control of the light filter system was implemented.
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