Currently , a new design methodology - system level design methodology is introduced into the wireless sensor network system modeling and simulation methodology , system level design methodologies look upon wireless sensor networks system as a complete system , with an embedded systems perspective to divide wireless sensor networks system into some modules which have independent system behavior and uniformly modeling , covering the traditional shortcomings of single modeling for wireless sensor networks system . therefore , it is significant to study the sensor networks system system - level design methodology , which will lay solid basis of heterogeneous environment system theory research 近来,一种新的设计方法学-系统级设计方法学被引入无线传感器网络的建模仿真方法学中,系统级设计方法学将无线传感器网络看作一个完整的系统,以嵌入式系统的观点将无线传感器网络系统分成各个系统行为独立的模块进行统一建模,弥补了传统无线传感器网络系统单一建模的缺点,因此研究无线传感器网络系统级设计方法学,在异构环境下对无线传感器网络系统进行建模仿真具有重要的理论和实际意义。
In all control modes especially when ev starts up at low speed with full load , it realizes round magnetic chain , stator current observers and full speed control model and makes ev have higher torque , and good climbbing capability with constant power and have high output speed with constant torque . all of these above provide control system behavior with good robust and sidiling mode 在各控制方案中,尤其在电动汽车低速起动和满负荷低速行驶时,实现了圆形磁链的拟合,定子电流观测器和全速度控制模型控制方案,使电动汽车在恒功率状态下具有较大的起动转矩和爬坡提速性能,在恒转矩状态下具有较大的速度输出,从而使该控制系统达到了较好的鲁棒性、滑模性。
Based on this , we delve further into the system architecture , system behavior and system configuration of profibus - dp . its transfer techniques , media access control methods , data transfer services and address assigning mechanism are introduced , while their characteristics are also analyzed 在此基础上,进一步分析了profibus - dp控制系统的系统结构、系统行为和系统配置形式,并对它的传输技术、介质访问控制方式、数据传输服务以及站点地址编址机制进行了介绍,分析了它们的特点。
The sensitivities testing of system model includes changing parameters and changing initial value . by testing the model of system dynamics of the fault , the change of the system behavior indicates that which parameters are sensitive to the system model , accordingly , these parameters can be used for sensitive parameters of the fault alarm 系统模型的灵敏度测试包括更改参数和改变初始值的测试,对故障的系统动力学模型进行灵敏度测试,通过行为的变化可说明系统模型对哪些参数的变化是敏感的,从而将这些参数作为事故报警的灵敏参数。
On this base , we design and implement a code generator , which finishes the transformation from pim to psm and from psm to code , to support rapid changes of system behaviors and automatic code generation after requirement changes . run - time states of business objects and association information between objects are separated as logs from business object information , and with the aid of such logs , flexible traceability between business data can also be conveniently realized 在此基础上设计并实现了代码生成器,完成平台无关模型到平台相关模型和平台相关模型到代码的自动转换,以支持在模型变化之后系统行为的快速变化和代码的自动生成,并在对象状态与关联日志的支持下实现企业业务数据的灵活追溯。