A5025976927- Sensorless Control of Electric Motors
- Smart Grid and Power Systems
- Adaptive Control of Nonlinear Systems
- Electric Motor Design and Analysis
- Industrial Technology and Control Systems
- Power Systems and Renewable Energy
- Magnetic Bearings and Levitation Dynamics
- High-Voltage Power Transmission Systems
- Pulsed Power Technology Applications
- Gyrotron and Vacuum Electronics Research
- Aerosol Filtration and Electrostatic Precipitation
- Vehicle emissions and performance
- Erosion and Abrasive Machining
- Power Systems Fault Detection
- Fire Detection and Safety Systems
- Traffic control and management
- Multilevel Inverters and Converters
- Electrostatic Discharge in Electronics
- Greenhouse Technology and Climate Control
- Traffic Prediction and Management Techniques
- Inertial Sensor and Navigation
- Power Systems and Technologies
- High voltage insulation and dielectric phenomena
- Control Systems in Engineering
- Engineering Diagnostics and Reliability
Luoyang Institute of Science and Technology
2025
Henan University of Science and Technology
2021-2023
Nanjing University of Information Science and Technology
2019
Jiangsu University
2010
Hebei University of Technology
2010
University of Kang Ning
2008
Chinese Academy of Engineering
2007
ABSTRACT To address product defects caused by coating spraying during the centrifugal casting process of engine cylinder liners, we refined multi‐station process, analysed key factors influencing quality, developed a model for volume and thickness, designed flow monitoring system. The system is based on multi‐source heterogeneous network controller, ensuring rapid output response, minimal overshoot, low error. Test results demonstrate that use measurement control in equipment improves...
Aiming at the issues of slow convergence, phase delay, and chattering in sensorless vector control system permanent magnet synchronous motor (PMSM) controlled by sliding mode observer (SMO), a fuzzy adaptive super-twisting (ST) SMO algorithm is proposed. The used to estimate uncertain boundary adaptively adjust gain, which ST accelerate convergence speed eliminate delay caused locked loop compensation, improve estimation accuracy rotor position. In this algorithm, sigmoid function instead...
X-ray spectrum nondestructive testing of electric power fittings is able to provide convenient, quick and accurate detection. The principles detection methods are introduced in this paper. By changing the steel anchor external aluminum sleeve crimping parts, core wire pipe or connecting size, tube intermediate casing technology used detect actual influence typical defects on quality transmission line analyzed. It proved that digital imaging effective fittings, can be widely applied...
In order to solve the chattering and phase delay problems in traditional sliding mode observer(SMO), this paper proposes an improved observer, which effectively weakens by using a new piecewise function as switching function. At same time, angle compensation is provided for caused introduction of low-pass filter, then arctangent used extract rotor position speed information PMSM. Compared with from simulation results, we can see that control system has obvious advantages reducing chattering,...
Abstract An optimized sliding‐mode observer control algorithm for permanent magnet synchronous motor (PMSM) is proposed to solve the problems in conventional algorithms (e.g., system chattering and phase delay). The adopts a new piecewise function as switching reduce chattering. low pass filter substituted with complex coefficient delay caused by filter. Moreover, counter emf back obtained using filtering of reintroduced into decrease gain system. simulation results suggest that outperforms...
A V/N switch for a multi-pulse generator has been designed, constructed and tested. The switch, using spark gap to isolate triggered pulse multi-stage electrode cause the breakdown more quickly, can work at 600 kV with time jitter less than 2 ns rising 20 ns. Compared other types of pulsed high-voltage N/V operated stably by relatively lower voltage cost. However, under specific circumstance, performance deteriorates, which is also discussed in this paper.
Under complex driving conditions, the speed of pure electric vehicles changes frequently, and there is no mathematical law to follow. Bad working conditions will lead change motor parameters. Conventional control PI regulator parameters are fixed cannot be adjusted in real time accordance with vehicle state. The dynamic performance drive system decreases due increase AC/DC coupling high-speed field weakening region interior permanent magnet synchronous (IPMSM). To solve above problems, an...