Research On Time Synchronization Control Technology Base On IEEE1588Protocol

In order to adapt to each subnet in a distributed network time synchronization between the various devices, IEEE1588clock synchronization protocol is the main network synchronization protocol, how to construct a scheme supporting IEEE1588protocol between network devices, and how these schemes surporting with software and hardware technology to be achieved, and how the overall network provide effective synchronization time service support, has become an urgent problem to be solved.IEEE1588protocol plays as a crucial role in time synchronization scheme, depending on the protocol specification, flexible and easy to achieve conditions, as well as high-precision synchronization time guarantee. It does not increase the transmission load of the network, and can provide a complete set of synchronous real solution method, thereby improving the performance of the system on the accuracy of time.Chapter1Introduces the development of the of PTN network transmission technology, lists a variety of network time synchronization technology and compare each other. Scheme based on the IEEE1588clock synchronization protocol is a best solution to meet the requirements of the PTN network high-precision network synchronization transmission precision.Chapter2describes in detail the content of of PTN network synchronization clock technology, including its basic principles, PTN packet transport network technology application as well as the PTN network IEEE1588the actual demand of the paper presents a practical application background.Chapter3gives the circuit design of IEEE1588synchronization clock networks, including the IEEE1588clock agreements contents principle, the packet structure of the agreement itself, the protocol specifications and link structure; then given based on the FPGA general logic IEEE1588protocol implementation the design based on FPGA techonolgy logic module,and its functional divide and functional details.Chapter4gives Research on Time Synchronization Control Technology Based on IEEE1588Protocol simulation, decribes feedback neural network PID control algorithm simulation with Matlab, carry out a clock synchronized to the master clock tracking function. And decribes may lead to the master clock and the causes of error between the time.Gives the analysis of this algorithm with high accuracy and effectiveness through the simulation results.givesa SOPC system based on NIOS II embedded processor design, Based NIOS Ⅱ embedded soft-core system, the algorithm software and hardware co-design and design, has a practical application.Chapter5.Analysis the network delay which may impact IEEE1588time synchronization accuracy for various reasons and this impacts,Design a FPGA modules from the the clock side with average filtering method and kalmanfiltering method,the error of the filtersimulation testscan effectively improve the synchronization network timestamp accuracy of information.