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大型矿山挖掘机回转平台开裂故障智能维修方法
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作者 齐枫 《工程机械与维修》 2024年第7期16-18,共3页
针对现行维修方法存在维修效果不佳、修复后的开焊率较高等问题,提出了大型矿山挖掘机回转平台开裂故障智能维修方法。使用彩色相机抓拍挖掘机回转平台图像,采用机器视觉技术提取图像中的开裂故障特征,并对开裂故障进行识别和定位。采... 针对现行维修方法存在维修效果不佳、修复后的开焊率较高等问题,提出了大型矿山挖掘机回转平台开裂故障智能维修方法。使用彩色相机抓拍挖掘机回转平台图像,采用机器视觉技术提取图像中的开裂故障特征,并对开裂故障进行识别和定位。采用高斯函数分布模型,对开裂故障进行焊接仿真模拟,并确定焊接参数,利用控制器控制焊机对定位的裂缝焊接维修。经实验证明,应用该方法可将开焊率控制在1%以内,能够实现对挖掘机回转平台开裂的高质量智能维修。 展开更多
关键词 回转平台开裂 智能维修 机器视觉技术 高斯函数分布模型
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Effects of Perfectly Correlated and Anti-Correlated Noise in a Logistic Growth Model
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作者 ZHANG Li CAO Li 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第3期462-464,共3页
The logistic growth model with correlated additive and multiplicative Gaussian white noise is used to anedyze tumor cell population. The effects of perfectly correlated and anti-correlated noise on the stationary prop... The logistic growth model with correlated additive and multiplicative Gaussian white noise is used to anedyze tumor cell population. The effects of perfectly correlated and anti-correlated noise on the stationary properties of tumor cell population are studied. As in both cases the diffusion coefficient has zero point in real number field, some special features of the system are arisen. It is found that in cause tumor cell extinction. In the perfectly anti-correlated tumor cell population exhibit two extrema. both cases, the increase of the multiplicative noise intensity case, the stationary probability distribution as a function of 展开更多
关键词 logistic growth model perfectly correlated noise perfectly anti-correlated noise
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