CAJ | 학술논문

提出了非晶丝单磁芯双绕组结构,多谐振荡桥路励磁的新型磁场检测传感器,并建立了传感器的理论模型,在电路的时间常数远小于振荡周期的条件下给出了桥路输出信号与被测磁场及电路参数、磁芯参数间的定量关系,并通过实验验证了在一定范围内理论结果与实验结果非常接近.利用该传感器设计了钢板缺陷检测系统,结果表明它可检测微小缺陷,具有灵敏度高、体积小和成本低等特点.
제출료비정사단자심쌍요조결구,다해진탕교로려자적신형자장검측전감기,병건립료전감기적이론모형,재전로적시간상수원소우진탕주기적조건하급출료교로수출신호여피측자장급전로삼수、자심삼수간적정량관계,병통과실험험증료재일정범위내이론결과여실험결과비상접근.이용해전감기설계료강판결함검측계통,결과표명타가검측미소결함,구유령민도고、체적소화성본저등특점.
A new type of single-core and double-winding magnetic sensor based on amorphous wire with nominal composition Co_(70.4)Fe_(4.6)Si_(15)B_(10) using multi-vibrator bridge as its basic circuit Was presented.The theoretical model of the sensor was estab-lished.On the condition that the time constant of the circuit Was far less than signal period,the relations among output signal of the bridge,detected magnetic field,circuit component parameters,the magnetic parameter were received.And the results show that the experimental data was in good accordance with the theoretical prediction when R1 was between 5Ω and 20 Ω.Then,a magnetic flux leakage system based on the sensor for steel plate flaw detection was developed,and experimental results prove the sensor can detect small flaw on steel plate,with the advantages of high sensitivity,small bulk and low cost.