In this paper,the principle of multi point frequency characteristic correction is introduced,and a multi point fre-quency characteristic optimization software is designed.The improved simplex optimization method is used to optimize the parameters of the selected series correction control er,and the optimization results are briefly analyzed.

通用接收通道是一个高度集成化软件平台.在该平台的基础上可以对被测件进行调试和测试.随着测试项以及测试仪器的不停扩展,软件平台也需要提供不断升级.这不仅要求软件平台能够完成当前的测试调试工作,而且要具有很强的可扩展性.通过对雷达接收机接收通道的系统需求进行详细的分析,设计出具有针对性通用测试调试软件系统,并结合实际操作提出实现方式,最后针对系统的使用情况对系统性能提出了进一步的分析和讨论.实践证明,该系统配置灵活,可以高效地对雷达接收机接收通道进行测试调试工作,并在原有的基础上添加新的功能,使软件产品能够随着硬件的更新而升级.

In this paper,through the analysis of kinds of network technology and the present status of the Intelligent household,combined with the advantages of ZigBee wireless communication and embedded technology,an Intelligent household system based on the ZigBee wireless network communication was designed and developed.This paper adopt the star network topology structure,further design an intelligent household system framework,and realize the internal parts of the system.

In order to get the aptitude vehicle running stably in different situations,the article presents a control method for servo motor based on improving digital PID.The digital PID control technology used to improve control accuracy and phase margin expansion is described.The testing results based on the 16-bit micro-controller HC12 as hardware system,prove that the vehicle is reliable enough to steer in the various raceways.

One designs a simple digital frequency meter system by taking advantage of the top-down design approach,and using the combination of Verilog HDL hardware description language and schematic description.Then,one compiles and simulates the proposed project under the software environment in the Quartus Ⅱ.The simulation results show that the above mentioned design can finish automatic conversion adjustment according to the input signal frequency.The measurement results can be correctly displayed on the seven-segment digital tube in the experimental board.

It is the intrduction and analysis of the realization and application of implemented timing tasks of timing for real-time system,comparing variety of tasks to achieve timing tasks in Visual C + +.In addition a more deep study is made in the management of the clock system.