On the bases of the comprehensive analysis, this paper puts forward a system design plan about the topology and control strategy of the charging system in *** system design plan has high performance and carries on the...
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On the bases of the comprehensive analysis, this paper puts forward a system design plan about the topology and control strategy of the charging system in *** system design plan has high performance and carries on the simulation of common control strategy by MATLAB, what's more,italso makes the comparative analysis of the control effect.
To solve the traditional image processing system problem such as large in size, high power consumption and poor real-time, an embedded real-time image processing system is designed based on TMS320DM6446+FPGA architect...
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To solve the traditional image processing system problem such as large in size, high power consumption and poor real-time, an embedded real-time image processing system is designed based on TMS320DM6446+FPGA architecture. DM6446 as the core of the system is responsible for the scheduling, image processing algorithms, image output;field programmable gate array(FPGA) is responsible for capturing real-time image data, image preprocessing. The paper describes the principle of the real-time image processing system. The experiment proved that the system can achieve real-time acquisition, processing and output of image data in 20 frames per second.
Microcomputer auxiliary power switching device turn-on time is generally 70ms ∼ 80ms, when some loads are sensitive and require short switching time that a few milliseconds or less, the microcomputer auxiliary power ...
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Microcomputer auxiliary power switching device turn-on time is generally 70ms ∼ 80ms, when some loads are sensitive and require short switching time that a few milliseconds or less, the microcomputer auxiliary power switching devices can not meet the requirements, which requires faster switching devices. Power electronic switch is a fast open-off switch device to meet the sensitive load requirements on switching time. This article mainly introduced the application of power electronic switch as high voltage quick switching device, and analyzed harmonic problems of power electronic switch.
The temporary researches on transformer DC magnetic biasing was summarized, and the researching methods and findings of transformer DC magnetic biasing were analyzed. The main reasons and basic theory of transformer D...
The temporary researches on transformer DC magnetic biasing was summarized, and the researching methods and findings of transformer DC magnetic biasing were analyzed. The main reasons and basic theory of transformer DC magnetic biasing were introduced, and the influences of DC magnetic biasing to transformer were analyzed. The research method commonly is, establish corresponding calculate model by actual measure, simulate and calculate. The main restraining measures are limiting and isolating DC ***; DC magnetic bias; Transformer neutrals; Restraining measures
Chaos is a kind of quasi-stochastic behaviors of determinate nonlinear system. Chaos in three typical topology power electronic converters with a close loop controller is studied in this paper. Recently, how to apply ...
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Chaos is a kind of quasi-stochastic behaviors of determinate nonlinear system. Chaos in three typical topology power electronic converters with a close loop controller is studied in this paper. Recently, how to apply chaos has become the researching focus, chaos control is the basic problem of the application of chaos. To deal with this problem, some existing methods are reviewed and their features are analyzed, and then, this paper places emphasis on chaos control. Diversity chaotic systems are, diversity control methods are.
On the bases of the comprehensive analysis, this paper puts forward a system design plan about the topology and control strategy of the charging system in vehicle. The system design plan has high performance and carri...
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On the bases of the comprehensive analysis, this paper puts forward a system design plan about the topology and control strategy of the charging system in vehicle. The system design plan has high performance and carries on the simulation of common control strategy by MATLAB, what's more, it also makes the comparative analysis of the control effect.
Nowadays, every country focuses on the smart grid because of the energy deficit. The decrease of the traditional energy caused a lot of problems. The only way to solve them is to find some new fashion energy to fulfil...
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Nowadays, every country focuses on the smart grid because of the energy deficit. The decrease of the traditional energy caused a lot of problems. The only way to solve them is to find some new fashion energy to fulfill the consumption. So the only thing which can take the place of fossil fuel is renewable energy. There are three kinds of renewable energy which are hot in researching: wind power, photovoltaic power, and tidal power. But all of them are intermittent energy, if we settle the voltage, the power outputs would be hard to forecast and control. This caused a lot of problem for example: the quality of the power and harmonic problems. So we have to find a way to put the intermittent power into order so that it will no longer do harm to the main electric grid.
FPSO(Floating Production Shortage and Offloading) production process fault detection method based on a combination of kernel functions with multivariate statistical is introduced. Kernel function mapping the nonlinear...
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ISBN:
(纸本)9781629939254
FPSO(Floating Production Shortage and Offloading) production process fault detection method based on a combination of kernel functions with multivariate statistical is introduced. Kernel function mapping the nonlinear problem is converted into a high-dimensional linear feature space analysis and mapping data in high-dimensional space to extract the nonlinear characteristics to identify the fault. The experimental results show that the kernel function combined with multivariate statistical methods for the FPSO production process fault detection are very effective.
Taking into consideration that distribution static synchronous compensator (DSTATCOM) of fast response is an effective method to improve power quality in distribution system;based on active disturbance rejection contr...
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Taking into consideration that distribution static synchronous compensator (DSTATCOM) of fast response is an effective method to improve power quality in distribution system;based on active disturbance rejection control technique, this paper presents a new control strategy for cascade multilevel DSTATCOM. Aiming at this system's characteristic of strong coupling, linear extended states observer (LESO) in linear auto-disturbance rejection controller (LADRC) was used to estimate the real-time action of the internal (including model's uncertainties and coupling terms) and external disturbance and render it, realizing the ADRC of d, q axis current decoupling. Results from simulation and experiment prove that compared with traditional PID control, LADRC is of better rapidity and robustness in the meantime of decoupling control.
This paper thoroughly analysis the principles and structures of active disturbance rejection control (ADRC), and applied it to shunt hybrid active power filter (SHAPF). Based on the principles of ADRC, this paper rega...
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This paper thoroughly analysis the principles and structures of active disturbance rejection control (ADRC), and applied it to shunt hybrid active power filter (SHAPF). Based on the principles of ADRC, this paper regards the uncertainties both within and external of the system model as unknown interference of system, then estimating through extended state observer (ESO), and compensating by nonlinear feedback control (NLSEF), which makes the control law of the system is only related to specified input / output, and reduces detections in control process, i.e. simplifies complex control process. Excellent results can be achieved in system simulation by selecting Parameter, which proves the possibility of control strategy.
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