| Artificial climate box will have wide application in the future in the application and research fields of modern agriculture, biology, medicine, and spaceflight. This system has the characteristics of nonlinear, time lag and coupling. Traditional PID control method can be applied to the controlled objects with such characteristics. But due to some deficiencies, it does not match modern scientific experiments.In this paper, a control system with high control accuracy and high control quality for the artificial climate box is designed, and the system realization methods are studied deeply, and the sketch of hardware and software is given in detail. In this thesis, research is focused on the followings:1,The characteristics of artificial climate box and the existed control algorithms are analyzed, and a method of finding the best parameter for fussy control with the help of genetic algorithm is presented. Then simulation experiments with Matlab are designed, and the performance between PID control and Fussy control is compared.2,On the base of the study of existed hardware architecture of artificial climate box, S3C44B0 with the 32-bit ARM core is introduced, and operating system is also adopted. This design of completing data sampling and objects controlling makes the system more stable, fault tolerance and anti interference is enhanced.3,At the conclusion of the thesis, based on the control algorithm of system and the design of hardware, the sketch of software is given in detail. And some suggestions for the further developing of the control system are proposed based on the experience we accumulated during the experiment. |
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