Query：
学者姓名：杜恒
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
斜轴式轴向柱塞马达内部噪声源距离较近，如马达配流盘进、出油口间的距离为38 mm，且马达噪声源存在同频及倍频现象。斜轴式马达内部密集复杂的噪声源，导致频谱分析方法难以准确识别同频及倍频信号，传统声强测量的最高分辨率为50 mm，无法满足马达内部噪声源的辨识精度要求。针对传统方法难以准确辨识马达噪声源的问题，文中提出了一种基于压缩感知的声强测量方法，将压缩感知理论运用于声强云图高精度重构中，获取马达高分辨率的声强重构图像。首先，通过对斜轴式马达进行噪声辐射仿真分析，获取其外表面声场特性；然后，以马达外表面声强云图为先验信息，设计应用于马达声场的压缩感知框架，获取高精度重构马达声强云图；最后，通过马达传统声强测量与压缩感知声强测量的对比实验验证压缩感知理论对于提高马达噪声源辨识精度的可行性。结果表明，基于压缩感知的声强测量方法将马达噪声源辨识尺度从原来的70 mm提升至30 mm，提高了马达噪声源的辨识精度，实现了马达噪声源的高精度定位。
Keyword ：
压缩感知 压缩感知 声强测量 声强测量 声源高精度定位 声源高精度定位 斜轴式马达 斜轴式马达
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 陈淑梅 , 罗远明 , 黄惠 et al. 压缩感知在斜轴式马达声强成像中的应用研究 [J]. | 华南理工大学学报(自然科学版) , 2024 , 52 (04) : 68-76 . |
| MLA | 陈淑梅 et al. "压缩感知在斜轴式马达声强成像中的应用研究" . | 华南理工大学学报(自然科学版) 52 . 04 (2024) : 68-76 . |
| APA | 陈淑梅 , 罗远明 , 黄惠 , 吴干永 , 黄秋芳 , 钱聪 et al. 压缩感知在斜轴式马达声强成像中的应用研究 . | 华南理工大学学报(自然科学版) , 2024 , 52 (04) , 68-76 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Heavy-duty vehicles with long bodies, a large number of axles and large loads are subject to increasingly high requirements for precise steering technology due to the increasing trend toward energy conservation and intelligent assisted driving as well as variable driving conditions. In this paper, an energy-efficient open circuit variable-speed pump-controlled steering system (OPCEHSSS) adapted for heavy loads is used, but its strong flow output nonlinearity and system nonlinear dynamic behavior greatly impede the steering performance. Therefore, in order to reduce the influence of the flow leakage of the fixed-displacement pump on the system and to ensure that the flow output of the system matches the control model, a mapping model based on the fitting of a two-layer neural network algorithm with a dynamic real-time compensation strategy (FNC) is proposed. In addition, considering the strong robustness of the system even under parameter uncertainty and unknown disturbance, a complex nonlinear mathematical model is established based on OPCEHSSS physical characteristics, and a dual-objective control strategy of steering angle and pressure based on sliding mode control (SMC) is proposed. However, in order to reduce the influence of high-order switching discontinuity on the steering and ensure the fast convergence of the control system, a fast super twisting algorithm (STA) based on double saturation function of the boundary layer is proposed. The experimental results show that the three different controllers can effectively reduce the steering angle error after the introduction of FNC. And in the case of a single axle loaded with 6 tons, the improved new FNC+STA integrated dual-objective control strategy improves the accuracy by 53.16% compared with PID and 40.67% compared with SMC. The steady-state error is maintained within 0.9 degrees, realizing the high-performance steering tracking control of OPCEHSSS for heavy vehicles.
Keyword ：
dual-objective control dual-objective control flow nonlinear mapping and compensation flow nonlinear mapping and compensation Heavy vehicle steering system Heavy vehicle steering system pump control system pump control system steering tracking steering tracking super twisting algorithm super twisting algorithm two-layer neural network algorithm two-layer neural network algorithm
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lin, Xiezhao , Xu, Jun , Yu, Jianchao et al. High-performance steering tracking control of open circuit variable-speed pump-controlled steering system for heavy-duty vehicles based on flow nonlinearity compensation [J]. | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING , 2024 . |
| MLA | Lin, Xiezhao et al. "High-performance steering tracking control of open circuit variable-speed pump-controlled steering system for heavy-duty vehicles based on flow nonlinearity compensation" . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING (2024) . |
| APA | Lin, Xiezhao , Xu, Jun , Yu, Jianchao , Zhang, Xiaolong , Zheng, Yulan , Li, Su et al. High-performance steering tracking control of open circuit variable-speed pump-controlled steering system for heavy-duty vehicles based on flow nonlinearity compensation . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING , 2024 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
高速开关阀是航天领域动力系统的关键元件，需要具备高频响和高可靠性。然而，高速开关阀的开关特性会使系统产生水击现象，降低系统的可靠性，尤其是在高速开关阀高频切换过程中会产生更多的水击压力波，致使系统中的水击变得更加复杂。因此，采用仿真和实验相结合的方法对不同频率下水击压力脉动的变化进行分析，最终通过对数据时域和频域的分析，发现了高速开关阀的水击压力脉动规律，研究结果可在航天动力系统中应用。
Keyword ：
压力脉动 压力脉动 水击 水击 频率 频率 高速开关阀 高速开关阀
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 李雨铮 , 陈福龙 , 邓少贤 et al. 双线圈高速开关阀的水击特性验证 [J]. | 宇航总体技术 , 2024 , 8 (02) : 46-52 . |
| MLA | 李雨铮 et al. "双线圈高速开关阀的水击特性验证" . | 宇航总体技术 8 . 02 (2024) : 46-52 . |
| APA | 李雨铮 , 陈福龙 , 邓少贤 , 杜恒 , 生凯章 . 双线圈高速开关阀的水击特性验证 . | 宇航总体技术 , 2024 , 8 (02) , 46-52 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The current, electromagnetic force, and dynamic displacement of the high-speed on/off valve's (HSV) electromechanical converter under stable working cycle are significantly different from those under the initial movement cycle. This phenomenon determines whether the electromechanical converter can continue to operate stably, and it also leads to temperature rise and high energy consumption over long periods of time. Therefore, in this study, a high-precision model is proposed that can fully analyze the characteristics of the electromechanical converter under multiple motion cycles with the consideration of the effects of eddy current and hysteresis. First, the hysteresis loop of the material is tested, and the Jiles-Atherton hysteresis model is identified based on the test data and verified through experiments. Second, the fundamental reasons for the differences in current and electromagnetic forces between initial motion and stable motion are analyzed. On this basis, a new law of dynamic evolution of electromechanical converters under multiple motion cycles is discovered. Finally, the important influence of hysteresis characteristics and eddy current on the dynamic performance and energy loss of the electromechanical converter under multiple motion cycles is analyzed. The effects of frequency, voltage, and external resistance on the dynamic characteristics and energy loss of electromechanical converters have also been analyzed. The results indicate that as the voltage increases, the response time decreases, but the eddy current loss increases. An increase in external resistance will increase response time but reduce eddy current losses. This study can provide a theoretical basis for further improving the performance of electromechanical converters.
Keyword ：
Eddy current Eddy current Eddy currents Eddy currents electromechanical converter electromechanical converter energy consumption energy consumption high-speed on/off valve (HSV) high-speed on/off valve (HSV) hysteresis hysteresis Soft magnetic materials Soft magnetic materials
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Chen, Shaorong , Li, Qizheng , Huang, Hui et al. Dynamic Characteristics and Energy Consumption of Electromechanical Converter of High-Speed On/Off Valve Under Multiple Motion Cycles Considering Eddy Current and Hysteresis [J]. | IEEE TRANSACTIONS ON MAGNETICS , 2024 , 60 (3) . |
| MLA | Chen, Shaorong et al. "Dynamic Characteristics and Energy Consumption of Electromechanical Converter of High-Speed On/Off Valve Under Multiple Motion Cycles Considering Eddy Current and Hysteresis" . | IEEE TRANSACTIONS ON MAGNETICS 60 . 3 (2024) . |
| APA | Chen, Shaorong , Li, Qizheng , Huang, Hui , Chen, Shumei , Du, Heng , Li, Yuzheng et al. Dynamic Characteristics and Energy Consumption of Electromechanical Converter of High-Speed On/Off Valve Under Multiple Motion Cycles Considering Eddy Current and Hysteresis . | IEEE TRANSACTIONS ON MAGNETICS , 2024 , 60 (3) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Low-frequency response, strong nonlinearity and unknown disturbances are the main challenges faced by the engineering application of the pump-controlled electro-hydraulic steering systems (EHSSs) for heavy vehicles. To solve the above problems, an active disturbance suppression controller is proposed based on a variable rate reaching law (VRRL) and a terminal sliding mode observer (TSMO) in the framework of the sliding mode control. This controller is unique because, the VRRL introduces a nonlinear activation function, which enables smooth switching between multiple reaching rates, effectively improving the response speed and the disturbance rejection performance of the pump-controlled EHSS. Furthermore, an adaptive incomplete disturbance compensation control strategy is proposed by incorporating a TSMO to further improve the accuracy and robustness of the steering system, which employs a VRRL-based TSMO to realize accurate estimation of the lumped disturbance in finite time, and avoids controller overcompensation by selecting a preferred disturbance compensation coefficient. The stability analysis demonstrates that the proposed controller effectively suppresses the lumped disturbance and reduces the convergence domain of the steering system. A pump-controlled EHSS experimental bench is constructed, and a series of experiments are conducted with various steering frequencies and load conditions, which validate the ability of the proposed controller to achieve highprecision dynamic steering in all-terrain conditions of the pump-controlled EHSS for heavy vehicles.
Keyword ：
Heavy vehicles Heavy vehicles Pump-controlled electro-hydraulic steering Pump-controlled electro-hydraulic steering Sliding mode control Sliding mode control system system Terminal sliding mode observer Terminal sliding mode observer Variable rate reaching law Variable rate reaching law
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Su , Zhang, Zhizhong , Ding, Kaiyi et al. High-dynamic steering control of the pump-controlled electro-hydraulic steering system for heavy vehicles with active disturbance suppression [J]. | JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS , 2024 , 361 (15) . |
| MLA | Li, Su et al. "High-dynamic steering control of the pump-controlled electro-hydraulic steering system for heavy vehicles with active disturbance suppression" . | JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS 361 . 15 (2024) . |
| APA | Li, Su , Zhang, Zhizhong , Ding, Kaiyi , Guo, Kun , Zhao, Jingyi , Du, Heng . High-dynamic steering control of the pump-controlled electro-hydraulic steering system for heavy vehicles with active disturbance suppression . | JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS , 2024 , 361 (15) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Steering system of heavy vehicle facing intelligent and green development needs to satisfy the requirements of high precision and energy-efficient dynamic steering. Traditional steering systems use valved servo systems, which offer high steering accuracy but result in significant energy dissipation at the valve ports. In contrast, the variable speed pump control system (VSPCS) realizes the precise servo of steering system through direct volume control, which basically eliminates the energy dissipation at the valve port. However, the VSPCS lacks sufficient system stiffness due to low back pressure, making it difficult to achieve precise steering. To address these limitations, this paper proposes a back pressure controllable variable speed pump controlled steering system scheme (BCVSPCSS), which combines the energy-efficient flow supply of the VSPCS with a servo-proportional valve is used for back pressure control to, improving the dynamic performance of the system. This integration allows for precise steering while maintaining energy efficiency; The design of a dual objective nonlinear control strategy for angle and back pressure is crucial to deal with uncertainty and nonlinearity in the system. The Lyapunov analysis shows that the closed-loop system has asymptotic stability. In this paper, the experimental bench of BCVSPCSS is built for experimental verification. The results show that back pressure control effectively enhances the system's immunity. Under the same working conditions, the maximum angle error of the two systems is roughly the same, both around 1 degrees, while the energy consumption of BCVSPCSS is reduced by about 84.6% compared to the valve controlled steering system.
Keyword ：
back pressure back pressure energy saving control energy saving control Steering system of heavy vehicle Steering system of heavy vehicle steering tracking steering tracking variable speed pump control system variable speed pump control system
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Du, Heng , Li, Hanjin , Ding, Kaiyi et al. Research on energy saving and control characteristics of back pressure controllable variable speed pump controlled steering system for heavy vehicles [J]. | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING , 2024 . |
| MLA | Du, Heng et al. "Research on energy saving and control characteristics of back pressure controllable variable speed pump controlled steering system for heavy vehicles" . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING (2024) . |
| APA | Du, Heng , Li, Hanjin , Ding, Kaiyi , Li, Su , Yu, Jianchao . Research on energy saving and control characteristics of back pressure controllable variable speed pump controlled steering system for heavy vehicles . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING , 2024 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The hydraulic motor will generate noise in operation and it has fluid-structure coupling and compact internal structure. The sound intensity measurement is difficult to distinguish the noise sources of motor. In this paper, a high-precision localization method for noise sources of bent-axis motor is studied to improve the resolution of the sound intensity images to locate noise sources accurately. Firstly, the structural characteristics of the motor are analyzed, and the sound intensity images are obtained through the experiment. Then the high-resolution optimization method based on compressed sensing is designed according to the characteristics of the sound intensity field. Finally, the sound intensity images with high resolution are constructed. The high-resolution images can distinguish the position of the prominent points, and the error is less than 0.4 dB. The identification distance of noise sources can reach 30 mm, and it breaks through the highest resolution of the traditional sound intensity test. © The Author(s) 2023.
Keyword ：
Bent-axis motor Bent-axis motor Compressed sensing Compressed sensing High-resolution optimization High-resolution optimization Noise source location Noise source location Sound intensity image Sound intensity image
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Xu, C. , Xiangming, M. , Qinghong, G. et al. High precision localisation of the sources of noise of a bent-axis motor [J]. | Noise and Vibration Worldwide , 2023 , 54 (7-8) : 350-359 . |
| MLA | Xu, C. et al. "High precision localisation of the sources of noise of a bent-axis motor" . | Noise and Vibration Worldwide 54 . 7-8 (2023) : 350-359 . |
| APA | Xu, C. , Xiangming, M. , Qinghong, G. , Hui, H. , Shumei, C. , Heng, D. et al. High precision localisation of the sources of noise of a bent-axis motor . | Noise and Vibration Worldwide , 2023 , 54 (7-8) , 350-359 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The pivot steering resistance torque of heavy vehicle is one of the key parameters that affect the design and control performance of its steering system. Accurate and reliable resistance torque model can improve the design level, stability and control ability of the steering drive system, and has an important effect on it. In order to establish a resistance torque model that can accurately reproduce actual steering conditions, the elastic hysteresis friction force generated by the deformation of the tread unit when the tire turns is combined with the Maxwell hysteresis model. The pivot steering resistance torque model considering tire hysteresis behavior is proposed, which can effectively predict the resistance torque when tires are changed arbitrarily. The influence of steering frequency, steering angle amplitude and vertical load on resistance torque is explored based on the heavy-duty vehicle single-axle steering system test bench. The system steering angle input is designed based on typical hysteresis behavior, the reproducibility and actual hysteresis behavior of the pivot steering resistance torque model for erasure characteristics, multi-value characteristics, congruence characteristics, and return point memory is clarified. The results showed that this model can reproduce the typical hysteresis behavior of erasing characteristics, congruential characteristics and multi-value characteristics, which is consistent with the standard hysteresis system and has universality. However, the steering resistance torque of heavy vehicles has particularity in the memory characteristics of the return point, it only shows good memory characteristics of the return point when the tire rotation angle is greater than the accumulating angle. In summary, it can provide a valuable model reference for the research on the pivot steering resistance torque model of heavy vehicle. © 2023 Editorial Office of Chinese Journal of Mechanical Engineering. All rights reserved.
Keyword ：
arbitrary steering arbitrary steering heavy vehicle heavy vehicle hysteresis characteristics hysteresis characteristics pivot steering resistance torque pivot steering resistance torque tire tire
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Du, H. , Ren, T. , He, Y. et al. Study on Pivot Steering Resistance Torque of Heavy Vehicle Tire Considering Hysteretic Behavior; [考虑迟滞行为的重型车辆轮胎原地转向阻力矩研究] [J]. | Journal of Mechanical Engineering , 2023 , 59 (4) : 241-256 . |
| MLA | Du, H. et al. "Study on Pivot Steering Resistance Torque of Heavy Vehicle Tire Considering Hysteretic Behavior; [考虑迟滞行为的重型车辆轮胎原地转向阻力矩研究]" . | Journal of Mechanical Engineering 59 . 4 (2023) : 241-256 . |
| APA | Du, H. , Ren, T. , He, Y. , Zhu, X. , Liu, Q. , Zhao, J. . Study on Pivot Steering Resistance Torque of Heavy Vehicle Tire Considering Hysteretic Behavior; [考虑迟滞行为的重型车辆轮胎原地转向阻力矩研究] . | Journal of Mechanical Engineering , 2023 , 59 (4) , 241-256 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Heavy multi-axle vehicles with long bodies, large loads, and many steering axles are prone to one stuck axle with its steering system failed, which leads to a sharp drop in vehicle safety. Modulating the steering angles of the remaining non-faulty axles for compensation control can significantly improve the safety of the vehicle. Therefore, this paper proposes a method based on multi-axle steering compensation, which solves the large trajectory error, and instability of heavy multi-axle vehicles caused by the failure of one-axle steering system. Firstly, based on the Lyapunov method, and nonlinear model, the critical steering angle of the faulty axle leading to vehicle instability under the failure of one-axle steering system is clarified, which provides a quantitative index for vehicle stability evaluation. Then, a two-level controller is designed to maintain stability and reduce trajectory error of the faulty vehicle. The upper dual-input dual-output (DIDO) sliding mode controller (SMC) compensates for the faulty vehicle's lateral force and yaw moment. And the lower controller distributes the non-faulty axles' steering angles through a strategy considering tire workload and slip energy dissipation. Finally, a seven-axle vehicle model in the Trucksim and a Trucksim-Simulink co-simulation are used to verify the effectiveness of the proposed method. The results illustrate that the proposed method can maintain vehicle stability and reduce the lateral trajectory error by about 22%-91% in the failure of one-axle steering system. It proves that this method can provide a new scheme for active safety control of heavy multi-axle vehicles.
Keyword ：
active safety active safety compensation control compensation control coordination coordination Heavy vehicles Heavy vehicles multi-axle steering multi-axle steering trajectory tracking trajectory tracking
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Qihui , Du, Heng , Yu, Yajin et al. Research on active safety control for heavy multi-axle vehicles under steering system failure [J]. | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING , 2023 , 238 (9) : 2544-2556 . |
| MLA | Liu, Qihui et al. "Research on active safety control for heavy multi-axle vehicles under steering system failure" . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING 238 . 9 (2023) : 2544-2556 . |
| APA | Liu, Qihui , Du, Heng , Yu, Yajin , Huang, Hui , Wang, Yunchao , Fang, Jinhui . Research on active safety control for heavy multi-axle vehicles under steering system failure . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING , 2023 , 238 (9) , 2544-2556 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
对于微小型高速开关阀,大流量和高频响都会增大阀芯所受的液动力进而影响其运动状态,因此,对液动力进行分析与补偿是提升高速开关阀性能的关键因素之一.为了解决球阀式高速开关阀在高频启闭状态下流场结构复杂导致传统的稳态液动力理论计算公式已不适用的问题,基于CFD数值计算方法对液动力进行研究.首先,利用COMSOL软件建立阀内流场流体域的几何模型;随后,选用弱可压缩流体、标准k–ε湍流模型并运用动网格技术,得到流体域的压力和流线分布图、流量曲线以及不同阀口开度下阀球和阀芯的稳态液动力变化曲线;最后,为了补偿阀口启闭过程中所减小的稳态液动力,根据不同的阀口结构参数与阀芯受力及阀口启闭时间之间的变化关系,对阀口结构进行优化并确定最优参数.结果表明:进油孔阀球所受的稳态液动力会随着阀口的开启产生先减小后增大的现象,但由于进油孔阀球的稳态液动力相比于回油孔阀球较小,故阀芯上的稳态液动力变化与回油孔阀球上的稳态液动力变化近似;适当减小阀球推杆直径及将靠近阀口的流道改成渐扩型流道能够有效地补偿启闭过程中所减小的稳态液动力,改进后的最优结构相较于原结构的一个周期启闭时间从1.047 ms下降到0.714 ms,稳态液动力补偿效果明显.
Keyword ：
CFD CFD 液动力 液动力 球阀 球阀 补偿 补偿 高速开关阀 高速开关阀
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 李雨铮 , 王年生 , 包振坤 et al. 三通球阀式高速开关阀稳态液动力分析与结构改进 [J]. | 工程科学与技术 , 2023 , 55 (2) : 298-306 . |
| MLA | 李雨铮 et al. "三通球阀式高速开关阀稳态液动力分析与结构改进" . | 工程科学与技术 55 . 2 (2023) : 298-306 . |
| APA | 李雨铮 , 王年生 , 包振坤 , 黄惠 , 杜锦涛 , 杜恒 et al. 三通球阀式高速开关阀稳态液动力分析与结构改进 . | 工程科学与技术 , 2023 , 55 (2) , 298-306 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
