Controller - This component monitors many variables related to the work flow and decides how many instances of EC2 are necessary based on optimizing a small set of goals.
控制器——该组件监控工作流相关的大量变量，并以最优化一小组参数为目标，决定需要多少ec2实例。
2
Though optimizing quantification factor and proportionality factor of Fuzzy-PI controller, optimizing the membership function, then make the system response has good dynamic and steady performance.
通过优化模糊pi控制器的量化因子和比例因子，从而优化隶属函数，使控制系统具有很好的稳态和动态性能。
3
The method for designing and optimizing the controller which would use the software MATLAB was also given.