| 基于出口调制的气体脉冲压力发生方法 |
| Gas Impulse Pressure Generation Method Based on Outlet Modulation |
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| 中文摘要: |
| 针对航空航天领域对中低压气体脉冲压力测试与校准需求，介绍了一种基于出口调制型方式的中低压气体脉冲压力发生方法，利用稳定气流源和旋转阀，通过控制电机运动方式可在固定容腔中产生中低气体脉冲压力。根据旋转阀运动状态和阀口流通面积变化情况，建立气体压力关系式，通过理论计算得到的结果验证了旋转阀产生气体脉冲压力的可行性。利用本装置进行实验，开展不同电机转速和进气压力条件的实验，实验表明：产生的脉冲压力幅值在4MPa以下，脉宽在15ms以内，并且装置结构对脉冲压力波形影响较为明显，未来可进一步通过装置结构优化得到更为理想的脉冲压力波形。 |
| 英文摘要: |
| In order to meet the requirement of impulse pressure measurement and calibration in aerospace field, a generation method of medium and low gas impulse pressure was developed, which was based on the mode of outlet modulation, and the medium and low gas impulse pressure can be produced in the fixed cavity by motor motion.. Through the precision control of motor, the small impulse pressure was produced in the fixed cavity by motor motion. According to the motion state of the rotary valve and the change of the flow area of the valve port, the gas pressure relation was established. The feasibility of producing the gas impulse pressure by the rotary valve was verified by the simulation results. The experimental results showed that the impulse pressure amplitude was below 4 MPa and the impulse width was less than 15 ms. The influence of the device structure on the pulse pressure waveform was obvious. In the future, a more ideal impulse pressure waveform can be obtained by optimizing the device structure. |
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| 中文关键词: 动态压力；发生装置；脉冲压力 动态校准 |
| 英文关键词:dynamic pressure generator impulse pressure dynamic calibration |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2021.01.07 |
| 引用本文：张鹤宇1, 李博1, 杨军1.基于出口调制的气体脉冲压力发生方法[J].计测技术,2021,(1):. |
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