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This paper describes the ancillary services compensation mechanism in China Southern Power Grid(CSG), explains the relevant measurement algorithm and compensation standard, analyzes the operation status and existing problems based on the actual data, and discusses some recommendations.
Background construction is the base of object detection and tracking for the machine vision system. Traditional background modeling methods often require complicated computations and are sensitive to illumination changes and shadow interference. In this paper, we propose a block-based background modeling method, which fully utilizes the color and texture characteristics of each incoming frame. The...
We demonstrated a fiber sensing system by using an erbium doped fiber resonator cavity formed by two identical fibers Bragg gratings (FBG). The variation of the wavelength of the sensing FBG can be transferred and amplified in real time for long distance environmental monitoring. Measurements of a strain variation in time domain and frequency domain are presented. In addition, by applying a switching...
This paper presents a software architecture for engraving machine control system based on hierarchical finite state machine and multithread programming. Interactive sequence diagram and dataflow chart are described in detail for manual and automatic operation mode, which provides a consistent and flexible way to construct CNC control system.
PICOS18 is a real-time, multi-task control system kernel based on OSEK/VDX protocols. An embedded controller for semi-active suspension is designed in order to improve the response rate and realize the modularization design of the control system. The structure of embedded system is designed based on PICOS18. The whole control system is divided into 9 tasks according to the data flow method, and the...
In this article, a novel mixed index strategy for real-time update is presented. The strategy combines the inverted file with a structure index and implements the retrieval of both context and structure in an XML collection. It can be effectively used to optimize the query of path expression, decrease the number of update operations, accelerate the process of real-time update and shorten the response...
In integrated optimize control of urban sewerage disposal system, the optimal control of sewer network minimizing overflows and eventually reducing the impact on receiving waters during different rainfall events is a key problem. Multivariable regulator was investigated in this paper, and was applied in a typical example of sewer network. The performance of multivariable regulator approach is demonstrated...
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