电触头材料转移方向反转及电弧转换的突变模型

对电弧作用下电触头材料转移方向反转及金属蒸气电弧向气体电弧的转换虽进行许多试验研究.但是至今尚没有应用系统科学的观点加以描述.本文首次在电接触研究中应用突变理论的观点,建立了材料转移方向反转的尖点突变模型,指出存在两种不同类型的反转模式;借助蝴蝶型突变分析了从金属蒸气电弧向气体电弧转换的条件及其规律,论述了电源电压、电弧电流、负载电感、触头间隙等参数对转换的影响,从而使得预见和控制金属蒸气电弧向气体电弧的转换成为可能,并指出在一定条件下,存在折衷电弧.

CATASTROPHE MODELS OF THE DIRECTION REVERSE OF MATERIAL TRANSFER AND THE ARC TRANSITION

Many experiments and research work have been done on the direction reverse of mate-rial transfer and are transition from metallic to gascous phase,but no advanced theory andsuitable mathematical method could be uscd to explain these phenomena.Catastrophe the-ory was used first in the rescarch of electrical contact phenomena in this paper.Catastrophemodels of the direction reverse of material teansfer and the are transition from metallic togaseous phase were constructed and two kinds of direction reverse and compromise arcwere presented.