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基于磁致伸縮的大功率拖拉機(jī)阻力傳感器設(shè)計(jì)
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“十二五”國家科技支撐計(jì)劃資助項(xiàng)目（2011BAD20B02）


Design of Draft Sensor in Big-power Tractor Raiser Based on Magnetostriction
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    摘要:

    基于磁致伸縮原理，設(shè)計(jì)了一種大功率拖拉機(jī)電-液提升器用銷軸式阻力傳感器。根據(jù)鐵磁學(xué)理論、安培環(huán)路定理以及磁路歐姆定律建立了傳感器勵(lì)磁電路的數(shù)學(xué)模型，并在Matlab/Simulink中對(duì)傳感器的電壓信號(hào)輸出隨負(fù)載的變化情況進(jìn)行了仿真分析。采用45調(diào)質(zhì)鋼和40Cr調(diào)質(zhì)鋼兩種材料作為傳感器外殼進(jìn)行對(duì)比。傳感器剪切力靜態(tài)加載試驗(yàn)結(jié)果表明：45調(diào)質(zhì)鋼靜態(tài)特性曲線線性度決定系數(shù)R2為0.9965，加載70 kN剪切力時(shí)輸出電壓為0.55 V，性能優(yōu)于40Cr調(diào)質(zhì)鋼。

    Abstract:

    A kind of axial draft sensor was designed based on magnetostriction theory to improve the measuring accuracy of soil resistance. A mathematical model of sensor’s exciting circuit was established based on ferromagnetics theory, Ampere’s circulation and Ohm’s law for magnetic path. Then the performances of sensor’s output signal along with load were simulated by using Matlab/Simulink. 45-quenching steel and 40Cr-quenching steel were used as sensor’s shell separately. Load experiment showed that the performance of the sensor, of which shell was 45-quenching steel, was better than the other. The better sensor’s linearity determination coefficient of static characteristic curves was 0.9965. The output voltage was 0.55 V when the shearing force was 70 kN. 

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李明生,遲瑞娟,毛恩榮,張婧瀛,劉宇.基于磁致伸縮的大功率拖拉機(jī)阻力傳感器設(shè)計(jì)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(8):8-12,32. Li Mingsheng, Chi Ruijuan, Mao Enrong, Zhang Jingying, Liu Yu. Design of Draft Sensor in Big-power Tractor Raiser Based on Magnetostriction[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(8):8-12,32.

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  • 在線發(fā)布日期: 2013-07-19
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