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| The Synchronizing Sample and Data Recovery for Multi-channel Fluctuating Pressure in the Rocket Test Platform |
| Received:February 04, 2021 Revised:February 15, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.03.014 |
| KeyWord:fluctuating pressure synchronous sampling seperation of the acquisition and storage data recovery |
| Author | Institution |
| ZHANG Cheng |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| ZHANG Qi |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| NIE Fei |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| LUO Cheng-gang |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| LIU Jing |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
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| Abstract: |
| To realize the synchronous acquisition and data recovery of multi-channel fluctuating pressure in a rocket test platform, an unified synchronous trigger signal is used as the sampling enable signal in a multi-clock sampling system, realizing the synchronous sampling of pulsation pressure for 40 channels; a design, called “Seperation of the storage and the acquisition”, is adopted to separate the memory circuit from the sampling system. The memory circuit is only protected from the impact, which is assessed by the artillery test. The data recovery is realized through the recovery of the memory. As a result, the synchronous precision for sampling 40 channels is controlled in five clock cycles and the storage successfully passed the impact evaluation over 1000 m/s, recovering all stored data. Therefore, in a multi-clock sampling system, using the unified synchronous trigger signal can improve the synchronous precision effectively. In a flight vehicle where carrying space was limited, separating the function of acquisition and storage can greatly increase the anti-impact ability of storage without increasing the volume and weight, which can improve the probability of data recovery. |
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