Jianhua Yang

Jianhua Yang
China University of Mining and Technology · School of Mechatronic Engineering

Doctor of Engineering
Mechanical Engineering & Nonlinear Dynamics

About

161
Publications
23,208
Reads
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1,512
Citations
Citations since 2017
116 Research Items
1248 Citations
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
Introduction
We focus on the research of major equipment dynamics, intelligent fault monitoring and health management of mechatronic equipment, special robot, nonlinear and random vibration of equipment, etc. We welcome academic exchanges and project cooperation.
Additional affiliations
January 2022 - present
China University of Mining and Technology
Position
  • Professor (Full)
December 2016 - November 2017
University of Michigan
Position
  • Researcher
Description
  • jianhuay@umich.edu
January 2014 - December 2021
China University of Mining and Technology
Position
  • Professor (Associate)
Description
  • jianhuayang@cumt.edu.cn
Education
September 2006 - June 2011
Nanjing University of Aeronautics & Astronautics
Field of study
  • Dynamics & Control
September 2002 - June 2006
Hebei University of Engineering
Field of study
  • Mechanical Design, Manufacturing & Automation

Publications

Publications (161)
Article
The wire rope inspection robot is an advanced tool for wire rope condition monitoring and maintenance, which can accurately locate and judge the damage of wire rope. In addition, the wire rope inspection robot can also be used for cable inspection. Firstly, the crawling structure and crawling mode of the wire rope inspection robot are reviewed, and...
Book
Full-text available
共振是系统的特性,本书研究非线性系统的变尺度共振,反映该领域 的最新研究成果。本书在重视理论研究的基础上,同时侧重于工程应用介绍,以旋转机械设备故障诊断为背景,将共振理论应用于滚动轴承故障诊断中。全书共分14 章,主要涉及变尺度随机共振、变尺度振动共振、变尺度系统共振等基础理论,以及基于以上理论的滚动轴承故障诊断问题。本书既有新的理论方法介绍,也有与经典方法的对比研究,便于读者掌握各种不同方法的优缺点,在科研与应用中灵活选择。本书还给出一些关键程序的MATLAB 代码,便于初学者尽快掌握相关知识。本书可作为高校、研究院所、企业单位等科研人员的参考用书,对机械、力学、物理、通信、应用数学等领域的相关研究人员均有参考价值。
Article
Full-text available
The bearing vibration signal shows strong non-stationary property under time-varying speed conditions. In addition, the weak bearing fault characteristic is often submerged in strong background noise. How to accurately extract the unknown fault characteristic from the non-stationary vibration signal is the primary problem of bearing fault diagnosis...
Article
Full-text available
Image denoising is a long-standing hard problem, especially in the field of engineering detection. In addition, emerging promising image-based intelligent diagnosis methods are sensitive to image noise. However, existing methods cannot meet the requirements well. Actively utilizing the construction role of noise, we propose an adaptive image denois...
Article
Full-text available
The stochastic resonance (SR) in a bistable system driven by nonlinear frequency modulation (NLFM) signal and strong noise is studied. Combined with empirical mode decomposition (EMD) and piecewise idea, an adaptive piecewise re-scaled SR method based on the optimal intrinsic mode function (IMF), is proposed to enhance the weak NLFM signal. At firs...
Article
In previous studies, double harmonic signals as external driving forces have been used for inducing logical vibrational resonance to facilitate the control of logic operations. It requires the bias parameter to break the symmetry of the bistable system. In hardware circuits, symmetric bistable system circuits are easy to build and even using few co...
Article
When the load and speed of rotating machinery change, the vibration signal of rolling bearing presents an obvious nonstationary characteristic. Stochastic resonance (SR) mainly is convenient to analyze the stationary feature of vibration signals with high signal-to-noise ratio. However, it is difficult for SR to extract the nonstationary feature of...
Patent
本发明涉及一种钢丝绳攀爬机器人,包括两个横向的夹持部,两夹持部之间设有两对具有夹持轮的夹持机构,两夹持部上分别转动安装有相同位置上螺纹相反的横向的正反牙丝杠,各夹持机构分别与两个正反牙丝杠上的丝杠螺母固定连接,各夹持轮朝向钢丝绳通过的路径并围成供钢丝绳通过的夹持间隙,两个夹持部之间转动安装有纵向的连接杆,连接杆的两端均设有第一伞齿轮,两正反牙丝杠的朝向连接杆的端部分别设有与第一伞齿轮啮合的第二伞齿轮,一第一伞齿轮通过啮合输入伞齿轮与动力输入轴连接,至少有两个夹持机构上设有与对应夹持轮连接的驱动装置。操作简单快捷,仅需要转动输入轴完成固定,准备工作时间短,工作效率高。
Patent
本发明公开了一种矿井钢丝绳尘垢清除机器人及工作方法,适用于矿井下使用。其包括抱紧装置、升降装置、驱动装置及尘垢清除装置;所述抱紧装置上下对称式设置,通过上下抱紧装置张开闭合,实现机器人松开抱紧钢丝绳;所述升降装置左右对称式设置,通过与抱紧装置配合,可实现灵活升降,保证机器人攀爬的稳定性;所述尘垢清除装置在拱字形壁表面对称式设置,与驱动装置相互配合,实现尘垢清除工作;所述驱动装置在拱字形壁内表面对称式设置,与抱紧装置配合,实现机器人在钢丝绳上攀爬。其结构简单,体积小重量轻,使用方便,满足在矿井钢丝绳上灵活攀爬的要求,实现高效安全的钢丝绳尘垢清除清洁作业。
Article
Fault feature extraction of the rolling bearing under strong background noise is always a difficult problem in bearing fault diagnosis. At present, most of the research focuses on weak signal extraction under Gaussian white noise and has certain practical significance. However, the noise in engineering is often complex and changeable, Gaussian whit...
Article
Stochastic resonance (SR) is mainly produced by the synergistic effect of noise, nonlinear system, and signals. This converts a part of the noise energy into useful signal energy, thereby improving the output of the system. When rotating machinery starts and stops, driving force and load will cause the variation of speed, and thus the produced vibr...
Article
The extraction of non-stationary feature information under strong noise background is a difficult problem. In this paper, a novel general time-varying scale transformation aperiodic stochastic resonance is proposed to extract and enhance the weak nonstationary signal under strong noise background. The theoretical framework of a parameters time-vary...
Patent
本发明公开了一种多源信息融合轴承故障诊断装置及方法,本发明涉及机械设备技术领域,包括机械驱动单元、轴承试验单元、支撑单元、油液循环单元,支撑单元的顶端开设有T型槽,机械驱动单元固定安装在支撑单元的顶端,轴承试验单元定位安装在T型槽上,且与机械驱动单元相互匹配,机械驱动单元包括驱动伺服电机、气缸、连接杆、第一膜片联轴器、第二膜片联轴器、扭矩传感器、扭矩传感器底座、第三膜片联轴器、拖动伺服电机,通过探头的监测端与试验轴承外表面相贴合,利用温差发电器的外部温度与探头所监测温度,就能反映试验轴承的直接温度,而且将其与主电路相关联,温度过高时候切断主电路,避免试验事故,保障安全。
Article
The dynamic response of a Duffing system from self-induced resonance to system resonance is studied in this paper. From numerical simulation, it is found that the system response gradually transits from self-induced resonance to system resonance with the increase of the pulse amplitude of the signal. In order to describe this process, we define the...
Patent
本发明公开了一种具有磁吸式防坠系统的智能钢丝绳探伤攀爬机器人,包括机架,所述机架内包含供钢丝绳穿设通过的探伤通道,所述机架上沿钢丝绳长度方向对应于探伤通道依次设置有上驱动系统、磁吸式防坠系统、探伤系统、下驱动系统和除尘系统,所述除尘系统位于机架位移方向上的前端,所述机架通过上驱动系统和下驱动系统沿钢丝绳行走位移。在沿钢丝绳位移的过程中,通过探伤系统对钢丝绳进行探伤检测,且在探伤检测前,通过除尘系统对钢丝绳进行除尘清理,且提高了探伤机器人检测精度,当机架出现失速现象时,能够通过磁吸式防坠系统对机架整体进行刹停,提升安全性。
Article
Full-text available
Energy is an essential material basis for human survival and development, but faults and damages are inevitable during either fabrication or lifetime of energy equipment for energy production. In addition, the energy equipment usually presents complex dynamical behaviors. They influence the normal operation of energy equipment. Therefore, it is ess...
Article
Full-text available
Vibrational resonance (VR) shows great advantages in signal enhancement. Nonlinear frequency modulated (NLFM) signals widely exist in various fields,so it is of great significance to enhance a NLFM signal. However, for the complex NLFM signal, where its instantaneous frequency of the signal varies nonlinearly, the traditional VR method is no longer...
Article
Full-text available
Non-stationary feature information is common in engineering applications, and its signal features are irregular compared to stationary signals. Because of its strong volatility, the traditional signal analysis method is no longer applicable. In some environments, strong background noise makes it difficult to extract feature information. Adaptive ca...
Article
钢丝绳常用于矿井提升等场合中,其工作环境恶劣,损伤频发,开展钢丝绳检测工作意义重大。钢丝绳无损检测的常用手段是漏磁检测,可以有效反映钢丝绳损伤位置以及损伤类型。但钢丝绳所处工作环境与振动会导致漏磁信号被强背景噪声所干扰,特征信息提取难度大。同时,BP神经网络作为传统神经网络,能建立输入与输出之间的映射关系。针对强噪声下的漏磁信号特征信息的提取,并使用BP网络建立与损伤类型的映射,本文提出一种基于自适应移位平均降噪与BP神经网络的钢丝绳损伤识别方法,解决强噪声背景下钢丝绳损伤识别问题。以矿井钢丝绳为例,首先,采用自适应移位平均法对含噪的断丝信号与磨损信号进行降噪处理,通过自适应粒子群(APSO)优化算法找到移位平均算法的最优窗宽;然后,以断丝损伤为例,对输出的最优降噪信号提取峰峰值、波宽、波形...
Article
Full-text available
钢丝绳损伤信号是一种非平稳无周期性的冲击信号,其特征信号的降噪处理和特征提取成为亟待解决的难题。小波变换方法若小波基或者分解层数不适合,会在信号降噪的同时引入其他噪声干扰,影响信号处理与特征提取的效果。相较于小波变换方法,移位平均法只需要选择一定的移位窗宽即可实现对信号的有效降噪,但移位窗宽需要人为选择,盲目性大。针对上述问题,提出一种强噪声背景下钢丝绳损伤信号降噪方法。利用钢丝绳漏磁检测传感器采集不同类型的断丝数据,向信号中加入强高斯白噪声,以模拟强噪声背景;采用自适应移位平均法对钢丝绳损伤信号进行降噪,利用量子粒子群优化(QPSO)算法优化移位平均法的窗宽;将损伤信号的信噪比(SNR)作为适应度函数,通过QPSO算法使得损伤特征信号SNR最大化,从而实现最优信号降噪效果。实验结果表明,对...
Article
Rolling bearing is a widely used component in engineering. Fault diagnosis of rolling bearing is the key issue to ensure the normal operation of equipment. At present, the research on fault diagnosis of rolling bearing mainly focuses on the analysis of vibration data under constant working conditions. Nevertheless, when dealing with practical engin...
Article
As the main transmission components of rotating machinery, rolling bearings have important research significance for fault diagnosis and state detection. However, the operating environment of mechanical equipment is complex, and the fault characteristic information of rolling bearings is often unknown. Through the complex transmission path, the be...
Article
The gas path fault diagnosis is considered widely to ensure the economy, safety and practicability of gas turbines. Traditional gas path diagnosis methods are vulnerable to various uncertainties, resulting in a deviation between the diagnostic results and the real states, which brings huge potential safety hazard to industrial production. Periodic...
Article
Full-text available
Many studies have investigated factors contributing to large variations in the outcomes of round-window (RW) stimulation but most have focused on the floating mass transducer (FMT). To determine whether results for the FMT hold for a fixed-type transducer (FTT), this study constructs two coupled finite element models of the transducer and the human...
Article
Nowadays a large number of mechanical equipment working in harsh working environment will lead to strong background noise, which makes it difficult to extract feature information related to equipment fault. Bolt joint looseness inevitably occurs in engineering, which occupies a large proportion of all types of mechanical equipment faults. Therefore...
Article
Round-window stimulating transducer is a new solution to treat mixed hearing loss. To uncover the factors affecting the round-window stimulation's performance, we investigated the influence of four main design parameters of round-window stimulating type electromagnetic transducer. Firstly, we constructed a human ear nonlinear lumped parameter model...
Article
Nonlinear frequency modulation (NLFM) signal is widely used in radar, communication and signal processing. The response of nonlinear system excited by this kind of signal has rich information. At the same time, enhancing different types of signals by resonance phenomenon has unique advantages in the field of signal processing. Compared with other s...
Article
Otitis media is one of the common ear diseases, and its accurate diagnosis can prevent the deterioration of conductive hearing loss and avoid the overuse of antibiotics. At present, the diagnosis of otitis media mainly relies on the doctor's visual inspection based on the images fed back by the otoscope equipment. Due to the quality of otoscope equ...
Article
The moving average (MA) method has been widely used in signal processing, but it has problems of the dead zone and the fixed window. In this paper, an adaptive moving average (AMA) filtering method is proposed, which can sniff the inherent characteristics of the signal and assign time-varying optimal parameters to signal processing, hence solve dea...
Article
Nonlinear frequency modulation (NLFM) signal is widely used in radar, communication and signal processing. The response of nonlinear system excited by this kind of signal has rich information. At the same time, enhancing different types of signals by resonance phenomenon has unique advantages in the field of signal processing. Compared with other s...
Article
Many data-driven coal gangue recognition (CGR) methods based on the vibration or sound of collapsed coal and gangue have been proposed to achieve automatic CGR, which is important for realizing intelligent top-coal caving. However, the strong background noise and complex environment in underground coal mines render this task challenging in practica...
Article
Full-text available
In previous research works, logical stochastic resonance (LSR) was reported to frequently occur in an asymmetric bistable system, where the bias parameter is the key factor to make the LSR to appear. In this work, we investigate the effect of different anharmonic periodic signals on the pitchfork and saddle-node bifurcations in a symmetric bistable...
Article
The fault characteristic of rolling bearings under variable speed condition is a typical non-stationary stochastic signal. It is difficult to extract due to the interference of strong background noise makes the applicability of traditional noise reduction methods less. In this paper, an aperiodic stochastic resonance (ASR) method is proposed to stu...
Article
Full-text available
煤矿机械设备工作环境恶劣,背景噪声强,轴承早期的故障特征信号微弱,从传感器所测得的振动信号中提取反映故障状态的信息比较困难;同时,煤矿机械设备工作在高速、冲击等工况下,是典型的非平稳工况,不稳定的激励及复杂工况直接导致提取轴承故障特征信号困难。针对以上问题,以矿井提升设备的运行工况为背景,提出了一种基于计算阶次分析与自适应随机共振的滚动轴承故障诊断方法。首先,模拟了矿井提升机运行过程中典型的变转速工况,分别构造故障仿真信号,并采集了轴承振动实验信号;其次,通过等角度采集同步时域鉴相序列,利用计算阶次分析将轴承非平稳的振动信号重采样为平稳信号;然后,利用变分模态分解(VMD)方法将平稳信号分解为若干本征模态函数(IMF)分量,通过轴承故障阶次实现对轴承故障类型的判断;最后,利用自适应随机共振方...
Article
Stimulating the round window membrane via an active actuator of the middle ear implant, named the reverse stimulation, has become an option to help patients with ossicular chain deformity (OCD) to restore hearing. However, there is still no concise description of how OCD affects reverse stimulation considering the overflow characteristics of third...
Article
Image denoising is the key step for image preprocessing. Especially, denoising of a strong noisy image is truly necessary, even though it might be difficult. Among the different image denoising methods, stochastic resonance (SR) has the advantage of using the constructive role of noise. However, a traditional bistable system cannot take full advant...
Article
Rolling bearings often run under variable speed condition, in addition to constant speed condition. How to achieve the bearing fault diagnosis under variable speed condition has been an important and hot issue. Nevertheless, there are few works on bearing fault diagnosis under variable speed condition especially for the feature extraction of unknow...
Article
Poisson white noise is a typical noise used in science and engineering, which can induce stochastic resonance to detect the characteristic signal submerged in it. However, the weak performance of stochastic resonance will reduce the efficiency of the signal detection. In this paper, we study two methods of improving the stochastic resonance induced...
Patent
本发明公开了一种基于新型信噪比指标的自适应随机共振滚动轴承故障诊断方法,该方法不用提前知道故障特征频率,就能实现故障特征的提取及故障类型判别,且能够更好的抑制边频,而且不受外载荷波动,轴承转速以及轴承型号的影响.同时,本发明也为由载荷变化等因素引起的小范围内故障特征频率振荡的情况下提取故障特征信息及判别故障类型提供了一种有效的方法.
Article
In order to study the effect of middle ear malformations on energy absorbance, we constructed a mechanical model that can simulate the energy absorbance of the human ear based on our previous human ear finite element model. The validation of this model was confirmed by two sets of experimental data. Based on this model, three common types of middle...
Article
Stochastic resonance (SR) and self-induced stochastic resonance (SISR) are two kinds of important dynamical phenomena in the nonlinear system. SR occurs at the frequency of the characteristic signal. However, SISR can occur at a frequency that does not included in the excitation. In present, there are volumes of literatures focus on extracting the...
Article
The paper proposes a new method for objective sound quality evaluation for the vehicle interior noise based on the displacement of the basilar membrane in the human ear. The method was mainly carried out in four steps. Firstly, the noise samples in different seats of a car under different working conditions were collected through the vehicle interi...
Article
An active actuator of a middle-ear implant coupled to the round window membrane (RWM), which transmits vibration to the cochlea, has been used to compensate for hearing loss in patients. However, various factors affect the coupling condition between the actuator and the RWM, resulting in coupling leakage. In this study, a coupling impedance model o...
Article
The cochlear windows consist of the round window (RW) and the oval window (OW). These two openings connect the cochlea and the middle ear; its activity plays a vital role in sound transmission into the cochlea. However, it is difficult to capture a brief description of how cochlear windows activity affects reverse stimulation with physiological thi...
Article
Full-text available
The main purpose of this paper is to study both the underdamped and the overdamped dynamics of the nonlinear Helmholtz oscillator with a fractional-order damping. For that purpose, we use the Grünwald–Letnikov fractional derivative algorithm in order to get the numerical simulations. Here, we investigate the effect of taking the fractional derivati...
Article
Full-text available
To assess the effects of ossicular chain malformations on the performance of bone conduction hearing aids, a human ear finite-element model that includes an ear canal, a middle ear, and a spiral cochlea incorporating the third windows was established. This finite element model was built based on micro-computed tomography scanning and reverse modell...
Article
Full-text available
The extraction of weak multi-frequency signal in the background of heavy colored noise is studied. For the multi-frequency signal which cannot be directly decomposed by ensemble empirical mode decomposition (EEMD), further processing is made in the paper. Based on the normalized autocorrelation analysis and EEMD, a new method of weak multi-frequenc...
Patent
一种轴承故障加工装置及方法,适用于工矿企业中对轴承检测使用。其包括机械驱动单元、电极夹具单元、轴承夹具单元、电控单元;机械驱动单元上设有电动滑行机构,电极夹具单元设置在电动滑行机构上,轴承夹具单元设置在机械驱动单元下方并与电极夹具单元匹配,轴承夹具单元、电控单元与机械驱动单元固定连接;轴承夹具单元固定在机械驱动单元底端,电控单元安装在机械驱动单元背面。机械驱动单元带动电极作直线运动,轴承夹具单元固定不同型号的轴承;电极夹具可以夹持不同类型的电极,利用加工电流加工出点蚀和划痕两种故障;其结构简单,自动化程度高,能够有效模拟轴承在实际工作中出现的点蚀划痕,缩减了试验成本。
Article
We investigate logical stochastic resonance (LSR) in a nonlinear fractional-order system with an asymmetric bistable potential function. We use the success probability of the logical output to measure the logical operation ability of the system. If the success probability is 1, the logical output presents reliable LSR completely. When there are onl...
Patent
一种自灭火式电动自行车充电器及方法,适用于家用电动车使用。 包括密封与散热单元、供电单元、险情监测电路单元、灭火单元;其中供电单元、险情监测电路单元、灭火单元分别设置在密封与散热单元中,密封与散热单元包括外壳上和外壳下,外壳下两个长侧面面上分别设有多个作为入风口的栅格,外壳上设有栅格、散热扇,侧底部设有平行于长侧面的多条导粉槽,供电单元和险情监测电路单元分别设置在外壳下中开有入风口栅格处,灭火单元设置在外壳的短侧面内;当充电器内部温度过高、起火等多种险情,适用性较强,在险情初期就可触发灭火装置,及时性较强,可以短时间内喷出大量灭火粉末,排险效率高。 其结构简单、安装方便、制造成本低、实用性强。
Article
Electromagnetic middle ear implants (MEIs), which use the mechanical vibration of their implanted transducers to treat hearing loss, have emerged to overcome the limitations of conventional hearing aids. Several reports have indicated that the electromagnetic MEI's performance changed with different stimulation sites of the transducer. The aim of t...
Article
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