13 Result(s)
within
Article
**ang-Dong Kong
Engineering
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Article
Polynomial Excitation Current Compensation Control for Dead Zone and Hysteresis of Three-way Proportional Pressure Reducing Valve
In this paper, aiming at the phenomenon that the dead zone and hysteresis of three-way proportional pressure reducing valve (TPPRV) will seriously affect the control accuracy of construction machinery, a polyn...
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Article
Open AccessA novel kinematics and statics correction algorithm of semi-cylindrical foot end structure for 3-DOF LHDS of legged robots
In this paper, aiming at the problem that the ideal modeling point of the foot end deviates from the actual contact point due to the rolling effect of the semi-cylindrical foot end in leg hydraulics drive syst...
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Article
Study on nonlinear dynamic behavior and stability of aviation pressure servo valve-controlled cylinder system
In this paper, aiming at the phenomenon of self-excited oscillation caused by nonlinear factors in a large aircraft wheel brake control system, the nonlinear dynamic behavior of the pressure servo valve-contro...
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Article
Primary and secondary consolidation compression for saturated soil considering coupling effect of loading and heating
Geotechnical engineering that relates to the energy and environmental problem is receiving more and more attention worldwide. It is of great theoretical and practical value to study the properties of soil unde...
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Article
A Nonlinear Model-based Variable Impedance Parameters Control for Position-based Impedance Control System of Hydraulic Drive Unit
In this paper, aimed at the problem of control accuracy when the traditional position-based impedance control is applied in the hydraulic drive unit (HDU) of legged robot, a kind of nonlinear model-based varia...
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Article
Open AccessMulti-response optimization of Ti-6Al-4V turning operations using Taguchi-based grey relational analysis coupled with kernel principal component analysis
Ti-6Al-4V has a wide range of applications, especially in the aerospace field; however, it is a difficult-to-cut material. In order to achieve sustainable machining of Ti-6Al-4V, multiple objectives considerin...
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Article
Flow measurement and parameter optimization of right-angled flow passage in hydraulic manifold block
This study was conducted to investigate the flow field characteristics of right-angled flow passage with various cavities in the typical hydraulic manifold block. A low-speed visualization test rig was develop...
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Article
Wear Mechanism Analysis and Its Effects on the Cutting Performance of PCBN Inserts during Turning of Hardened 42CrMo
Super-strength steel 42CrMo after quenched and tempered has been widely applied to crucial parts due to the properties such as good impact toughness and high fatigue limit. However, it falls into the category ...
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Article
Open AccessParameters Sensitivity Characteristics of Highly Integrated Valve-Controlled Cylinder Force Control System
Nowadays, a highly integrated valve-controlled cylinder (HIVC) is applied to drive the joints of legged robots. Although the adoption of HIVC has resulted in high-performance robot control, the hydraulic force...
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Article
The dynamic compliance and its compensation control research of the highly integrated valve-controlled cylinder position control system
The highly integrated valve-controlled cylinder (HIVC) is the joint driver in the hydraulic drive legged robot motion process, with the inner-loop-control-based outer loop dynamic compliance control method of ...
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Article
Adaptive extraction method for trend term of machinery signal based on extreme-point symmetric mode decomposition
In mechanical fault diagnosis and condition monitoring, extracting and eliminating the trend term of machinery signal are necessary. In this paper, an adaptive extraction method for trend term of machinery sig...
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Article
Improved Sobel algorithm for defect detection of rail surfaces with enhanced efficiency and accuracy
A more effective and accurate improved Sobel algorithm has been developed to detect surface defects on heavy rails. The proposed method can make up for the mere sensitivity to X and Y directions of the Sobel algo...
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Article
Study on nonlinear dynamics characteristics of electrohydraulic servo system
The electrohydraulic servo system (EHSS) has been widely utilized in industry and national defense. However, it is a complex dynamics system composed of many parts. The anomalies are easy to happen in operatio...
