本文采用基于无模型的自抗扰算法，将网络环节和被控对象同视为控制对象，利用扩张状态观测器对控制系统的变化进行实时观测估计。-ADRC method based on no model is used in this paper, network system and control object are regarded as control object together, using extended state observer (ESO) estimating variation of t

汽车行驶监控，通过2G 3G 4G 网络将汽车状态信息上传到后台服务器。-Vehicle monitoring, through the 3G 4G 2G network will be the vehicle status information uploaded to the backend server

百度离线地图，可以试用，支持无网络状态下查看地图。-baidu map api