Search Results - "Ma, Zengqiang"

A parameter-adaptive ACMD method based on particle swarm optimization algorithm for rolling bearing fault diagnosis under variable speed by Ma, Zengqiang, Lu, Feiyu, Liu, Suyan, Li, Xin

“…Fault diagnosis for rolling bearing under variable speed is always a challenging topic since the vibration signal has time-varying characteristics. To overcome…”
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An Adaptive Generalized Demodulation Method for Multimedia Spectrum Analysis is Applied in Rolling Bearing Fault Diagnosis by Ma, Zengqiang, Lu, Feiyu, Liu, Suyan, Li, Xin

“…Research into rolling bearing fault diagnosis methods is of great significance because rolling bearings are a key part of mechanical equipment. The effect of…”
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Fractional Synchrosqueezing Transformation and its Application in the Estimation of the Instantaneous Frequency of a Rolling Bearing by Li, Xin, Ma, Zengqiang, Liu, Suyan, Lu, Feiyu

“…The time-frequency energy distribution processed by a short-time Fourier transform can be compressed to the real instantaneous frequency by the…”
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An Improved Time-Frequency Analysis Method for Instantaneous Frequency Estimation of Rolling Bearing by Li, Xiang, Chen, Mingyi, Ruan, Wanying, Ma, Zengqiang

“…Instantaneous frequency estimation of rolling bearing is a key step in order tracking without tachometers, and time-frequency analysis method is an effective…”
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Feruloyl Esterase (FAE) Characterized by Relatively High Thermostability from the Edible Mushroom Russula virescens by Wang, Li, Zhang, Rui, Ma, Zengqiang, Wang, Hexiang, Ng, Tzibun

“…A monomeric feruloyl esterase (FAE) with a molecular mass of 62 kDa was acquired from fresh fruiting bodies of the edible mushroom Russula virescens. The…”
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Light Intensity Affects Growth, Photosynthetic Capability, and Total Flavonoid Accumulation of Anoectochilus Plants by Ma, Zengqiang, Li, Shishang, Zhang, Meijun, Jiang, Shihao, Xiao, Yulan

“…Anoectochilus formosanus, a medicinal plant used to treat hypertension, lung disease, and liver disease, was grown to maximize biomass and secondary metabolite…”
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A novel compound from the mushroom Cryptoporus volvatus inhibits porcine reproductive and respiratory syndrome virus (PRRSV) in vitro by Ma, Zengqiang, Zhang, Weiwei, Wang, Li, Zhu, Mengjuan, Wang, Hexiang, Feng, Wen-Hai, Ng, Tzi Bun

“…Porcine reproductive and respiratory syndrome (PRRS), caused by PRRS virus (PRRSV), is a serious contagious disease in the swine industry. At present, there…”
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Envelope demodulation method based on SET for fault diagnosis of rolling bearings under variable speed by Zengqiang MA, Xin LI, Suyan LIU, Yongjie GE, Feiyu LU

“…Time-frequency analysis can effectively reveal the fault characteristics of rolling bearings under variable speed conditions. However, the traditional…”
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A Novel Ribonuclease with HIV-1 Reverse Transcriptase Inhibitory Activity from the Edible Mushroom Hygrophorus russula by Zhu, Mengjuan, Xu, Lijing, Chen, Xiao, Ma, Zengqiang, Wang, Hexiang, Ng, T. B.

“…A 28-kDa ribonuclease, with an optimum pH of 4.0 and an optimum temperature at 58 °C, was isolated from fruiting bodies of the edible mushroom Hygrophorus…”
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Growth and Photosynthetic Capability of Momordica grosvenori Plantlets Grown Photoautotrophically in Response to Light Intensity by Zhang, Meijun, Zhao, Duanduan, Ma, Zengqiang, Li, Xuedong, Xiao, Yulan

“…Momordica grosvenori plantlets were cultured in vitro for 26 d on sucrose- and hormone-free Murashige and Skoog (MS) medium with four levels of photosynthetic…”
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Hybrid energy storage capacity optimization based on VMD-SG and improved Firehawk optimization by Zhou, Zejia, Ma, Zengqiang, Mu, Tianming

“…•Based on the criterion of maximum center frequency, the optimal variational mode decomposition scale is selected to overcome the problem of mode aliasing…”
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Fault diagnosis for rolling bearing based on VMD-FRFT by Li, Xin, Ma, Zengqiang, Kang, De, Li, Xiang

“…•The definition and derivation of VMD-FRFT are given.•VMD-FRFT is non-fragility to the center frequency of multicomponent LFM signal.•VMD-FRFT is insensitive…”
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A Multichannel MN-GCN for Wheelset-Bearing System Fault Diagnosis by Yuan, Zonghao, Ma, Zengqiang, Li, Xin, Li, Jiajing

“…The working condition of high-speed train wheelset bearings is complex and bad, which makes its vibration signal contain strong noise. To obtain more…”
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Multirotational Speed Data Augmentation and Data Repair of High-Speed Train Wheelset Bearings Using Graph Speed Classifier GAN by Ma, Zengqiang, Yuan, Zonghao, Li, Xin, Liu, Suyan, Chen, Yinong

“…Wheelset bearings fault samples of high-speed trains often suffer from insufficient numbers and missing points. However, working conditions are one of the most…”
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Wireless monitoring system of vehicle overspeed on freeway based on GPRS by Ma Zengqiang, Gao Guosheng, Song Wanmin, Yan Yan

“…Vehicle overspeed is an important reason for the traffic accident on the freeway and it is helpful and necessary to monitor the peccancy behavior of over…”
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A Robust Observer-Based Control Structure for Permanent Magnet Synchronous Motor Drives Based on MPC And Sliding Mode Observation by Deyue Meng, Zengqiang Ma, Wei Liu

“…In PMSM motor drive systems, control accuracy and resistance have always been the most important challenges for researchers. This paper addresses these two…”
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Adaptive multi-time scale integration of the high-speed train fault samples by Liu, Suyan, Wu, Chenxu, Ma, Zengqiang, Yuan, Zonghao

“…High-quality fault samples are regarded as the foundation of data-driven high-speed train bearing fault diagnosis. An adaptive multi-time scale fault sample…”
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Road Safety Evaluation from Traffic Information Based on ANFIS by Ma Zengqiang, Pan Cunzhi, Wang Yongqiang

“…With the rapid growth of the number of various vehicles, the ratio of the traffic accidents to vehicle number is increasing greatly. To improve road safety, it…”
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A Graph Attention Based Multichannel Transfer Learning Network for Wheelset Bearing Fault Diagnosis With Nonshared Fault Classes by Yuan, Zonghao, Ma, Zengqiang, Li, Xin, Liu, Suyan, Mu, Tianming, Chen, Yinong

“…Most fault diagnosis methods require that the source and target machines’ fault classes should overlap and the number of samples should be comparable. However,…”
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A graph attention based multi-channel transfer learning network for wheelset bearing fault diagnosis with non-shared fault classes by Yuan, Zonghao, Ma, Zengqiang, Li, Xin, Liu, Suyan, Mu, Tianming, Chen, Yinong

“…Most fault diagnosis methods require that the source and target machines fault classes should overlap and the number of samples should be comparable. However,…”
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