A5017647532- Hydraulic and Pneumatic Systems
- Tribology and Lubrication Engineering
- Advanced Sensor and Control Systems
- Remote Sensing and Land Use
- Simulation and Modeling Applications
- Adaptive Control of Nonlinear Systems
- Control Systems in Engineering
- Advanced Algorithms and Applications
- Sensorless Control of Electric Motors
- Real-time simulation and control systems
- Military Defense Systems Analysis
- Iterative Learning Control Systems
- Advanced Measurement and Metrology Techniques
- Magnetic Bearings and Levitation Dynamics
- Vibration Control and Rheological Fluids
- Non-Destructive Testing Techniques
- Manufacturing Process and Optimization
- Mechanics and Biomechanics Studies
- Climate change and permafrost
- Vehicle Dynamics and Control Systems
- Real-Time Systems Scheduling
- Oil and Gas Production Techniques
- Robotic Mechanisms and Dynamics
- Grey System Theory Applications
- Transportation Safety and Impact Analysis
Jiangsu University
2016-2025
Nanjing Drum Tower Hospital
2020-2025
Shandong University
2024
Aero Engine Corporation of China (China)
2022
Beijing University of Posts and Telecommunications
2021
Harbin Institute of Technology
2009
Guangdong Police College
2007
Heilongjiang Academy of Forestry
2006
Chongqing University
2004
Huainan Mining Industry Group (China)
2002
To improve the slip rate control effect for different road conditions during emergency braking of wheel hub motor vehicles, as well to address problems uncertainty and nonlinearity system when electro-mechanical is used actuator ABS, a hierarchical strategy anti-lock (ABS) using active disturbance rejection (ADRC) proposed. Firstly, vehicle dynamics model an ABS based on EMB are established; secondly, speed observer dilated state in upper layer design pavement recognition algorithm, which...
Hypoxia plays an important role in the progression of atherosclerosis. However, ameliorating hypoxia at atherosclerotic lesions remains a great challenge. To achieve targeted oxygen delivery to plaques, Lipid 5-doped, platelet membrane-encapsulated magnetic mesoporous organosilicon nanoparticles loaded with perfluoro-15-crown ether (PFCE) (FMMON@PL) were prepared. PFCE worked as carrier, while iron oxide (IONPs) acted nanozymes catalase-like activity facilitate generation. enhance plaque...
Purpose – The purpose of this paper is to study the influence different cross-sectional shapes (rectangular, trapezoidal, oval and triangular) layout forms oil grooves (radial, circumferential, inclined, compound, helical double-helical), determine optimal section shape form on temperature field. Design/methodology/approach Heat conduction theory model was established based startup characteristics friction heat principle hydro-viscous clutch (HVC), then theoretical expression angular...
Background: When performing repetitive work in an electro-hydraulic servo system, the expected tracking signals are often periodic signals, such as trigonometric functions. For this kind of control is one most ideal strategies. Objective: The objective patent technology to improve position-tracking performance system and minimize errors by designing implementing a strategy. Methods: study models designs stabilizing controller, develops plug-in controller enhance EHSS tracking. regeneration...
Abstract In electro-hydraulic servo systems (EHSS), high nonlinearity and time-varying features limit the hydraulic actuator performance. feedback-based systems, linearization reduces nonlinearities. Their cancellation may produce instability when modeling uncertainty exists. This work uses a robust nonlinear controller based on Lyapunov theory to control position of system (EHSS). The dynamics were modeled as extensively possible, then simplified mathematical model EHSS was created for...
Purpose The purpose of this paper is to study the influence structural parameters oil groove (such as central angle number, depth and so on) on pressure, flow, load capacity transmitted torque between friction pairs hydro-viscous clutch. Design/methodology/approach According working process clutch, mathematical models hydrodynamic by film were built based viscosity-temperature property. Then analytical solutions obtained; effects zone contact zone, thickness, number grooves studied...
Started during December 2019, following the emergence of several COVID-19 cases in Wuhan City, Hubei Province, there was a rapid surge and spread new throughout China. The disease has since been included Class B infectious diseases category, as stipulated Law People's Republic China on Prevention Treatment Infectious Diseases shall be managed according to A diseases. During early phases infection, no specific pulmonary imaging features may evident, or overlapping with other pneumonia...
The present work numerically investigates the flow behavior of Newtonian fluid between rotating disk systems. Rotating is an embranchment fundamental research, which forms theoretical basis for media in many disk-type hydraulic machinery, and has been widely applied energy, aerospace, vehicles, medical, chemical areas. Reynolds equation model established based on a series assumptions, considers characteristics hexahedral surface textures friction disk, control dimensionless. velocity,...
In this paper, based on integrated vector method, a new efficient fault tolerant control methods has been proposed. According to the characters of windings asymmetric distribution when stator phase occurs in permanent magnet synchronous motors (PMSM) propulsion systems, each current value and its condition have brought forward, which contribute round magnetic field, simulations also given paper
To improve service life of shredder cutters, new technologies such as ultrasonic vibrationassisted cutting and cooling technology (jet spray) are introduced into the design cutter for a two-axis horizontal shredder. Ultrasonic vibration-assisted is theoretical analyzed, result shows that effect friction reduction only happens when speed less than vibration speed. Therefore, get 52.5% temperature 10.5% with an amplitude 25 μm frequency 20 kHz performed on rotational 60 r/min. Three methods...
Background: The optimal control strategy has been widely used in electro-hydraulic position servo systems to achieve high-precision tracking. However, the difficulty of selecting weighted matrices often leads poor tracking accuracy. Objective: This patent proposes an using a genetic algorithm improve accuracy system. Methods: first established system state equation valve-controlled asymmetric cylinder. Secondly, based on linear quadratic theory and algorithm, was proposed. Finally,...
Multiple disturbances coming from friction, matched, and mismatched uncertainties make it difficult for electrohydraulic servosystems to obtain the satisfactory position-tracking performance. The existing adaptive backstepping controllers fail effectively distinguish difference of disturbance between mechanical subsystem hydraulic subsystem, which limits compensation effect multiple disturbances, especially friction nonlinearity. Therefore, backstepping-extended state observer controller...
Background: The parallel mechanism is widely used in motion simulators, machine tools, medical equipment and other fields. It has advantages of high rigidity, stable structure carrying capacity. However, the control strategy method are difficult to study because complexity system. Objective: purpose this paper was verify dynamic model a hydraulic driven 3-DOF propose compound broaden bandwidth Methods: single rigid body established by Newton Euler method. feed forward based on joint space...
Warship electrical power propulsion system is researched, multi-phase permanent magnet synchronous motor control has expectant optimal dynamic performance under appointed condition, through modeling of screw propeller load application inverse methods nonlinear and optimization design controller parameters, based on the mathematic model characteristics system. The uncertainty parameters can worsen feedback linearization effect system, not achieving performance, even make unstable. extent...
Failure location and prediction are always important issues in optical transport networks, which can be resolved by cross-layer AI proposed self-optimized networks. Some related works experiment results have been given this paper.
Ultrasonic phased array Total Focus Method (TFM) is used to process the signal with data obtained by Full Matrix Capture(FMC) mode, which has advantages of high imaging accuracy and signal-to-noise ratio(SNR). However, frequency dispersion Lamb wave largelyaffected TFM. Therefore, wavelet analysis time domain filtering in multi-band method was proposed decompose an ultrasonic wide band into several narrow ones for suppressing effect, furthermore, damage extracted without reference thus...
Abstract High-frequency and long-running hydraulic servo system sinusoidal tests are developed for automobile engine flywheels in this article. The frequency characteristic of the is revealed by classical control method double inertia loop. feedforward controller introduced so as to compare it with adaptive control. modified amplitude-phase (MAPAC) proposed cope uncertainties increase precision experiments without knowing structure parameters system. amplitude error, phase delay, center...
Background: The vibration isolation platform (VIP) can greatly reduce the risk of damage to dynamic equipment caused by external interference and provide most stable reliable working environment for equipment. Objective: Aiming at problems small dimension, low bearing capacity, serious motion coupling, narrow bandwidth in field load equipment, a hydraulic redundant six degrees freedom parallel (PVIP) with active passive composite support is proposed. Methods: coupling model hybrid (APHVI)...