东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (2): 162-165.DOI: 10.12068/j.issn.1005-3026.2015.02.003

• 信息与控制 • 上一篇    下一篇

火花放电能量精确控制系统研究

李新光1， 钟圣俊2， 李伟晔1， 魏玉龙1   

  1. (1. 东北大学 信息科学与工程学院， 辽宁 沈阳110819； 2. 东北大学 材料与冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2014-01-06 修回日期:2014-01-06 出版日期:2015-02-15 发布日期:2014-11-07
  • 通讯作者: 李新光
  • 作者简介:李新光(1957-)，男，山西定襄人，东北大学教授.
  • 基金资助:
    国家自然科学基金资助项目(51174047).

Accurate Control System of Spark Discharge Energy

LI Xin-guang1， ZHONG Sheng-jun2， LI Wei-ye1， WEI Yu-long1   

  1. 1. School of Information Science & Engineering， Northeastern University， Shenyang 110819， China; 2. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2014-01-06 Revised:2014-01-06 Online:2015-02-15 Published:2014-11-07
  • Contact: WEI Yu-long
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摘要： 通过对采集的电流、电压进行积分计算的方法，设计了粉尘云最小点火能火花放电能量的精确控制系统，通过IGBT(绝缘栅双极晶体管)来控制电路中剩余能量的泄放，实现了放电能量相同但放电时间不同并且可控的目标，即实现了最小点火能量的放电能量和放电速率的控制.实验表明:该控制系统对于100J与10J能量的控制误差为5%，当能量为1J时误差为10%；对于粒度为8~13μm的铝粉，当放电能量为1J时，放电时间越短，粉尘云越容易被点燃，说明铝粉在能量输入速率较高时更加容易点燃.

关键词: 最小点火能, 能量精确控制, 火花能量, 能量输入速率, 粉尘云

Abstract: By using the method of integral calculation for sampled current and voltage， an accurate experiment system was designed to control the minimum spark discharge energy of dust clouds. Through insulated gate bipolar transistors， the discharge of the residual energy in the circuit was controlled， thus the discharge time was different and controllable under the same discharge energy. And the purpose of controlling the minimum ignition energy and the discharge rates at the same time was realized based on the proposed system. The results showed that the control error of 5% could be obtained for 100J and 10J energy. When the energy was 1J， the control error was about 10%. For the aluminum powder with the diameter range of 8 ~ 13μm， when the discharge energy was 1J， the shorter the discharge time was， the easier the dust cloud was lit. It is indicated that the aluminum powder is easier to be ignited at high rate of energy input.

Key words: minimum ignition energy, accurate control of energy, spark energy, energy input rate, dust clouds

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