A high accurate adaptive temperature control algorithm is proposed and implemented for a thermostatic chemical detecting device. The proposed algorithm combines the advantages of PID control and Fuzzy control which are high accuracy and easy control. The algorithm flow chart and fuzzy reasoning rules are presented. The experiment results and actual operation show that the algorithm has much better performance on adaptability, stability, accuracy than simple PID control and has a great application prospect on the field of constant-temperature chemical apparatus.

A Fuzzy PID-Smith Control algorithm is proposed based on Fuzzy PID Control and Smith Predictor Control for the indoor temperature control of VAV air conditioning system which is a big inertia, pure time-delay, nonlinearity and greatly affected by circumstances complex temperature system. The algorithm flow and fuzzy reasoning rules were designed and it possesses the advantages of both Fuzzy PID and Smith Predictor. The simulation results show that the algorithm has fast response, small overshoot, high accuracy, strong robust and self-setting in line when the parameter changes and a great improvement in the aspects of overshoot and adjusting time has been achieved compared to the current control algorithm.

Credibility is the key performance index and the lifeline for system simulation. Verification, validation and accreditation (VV&A) of all system simulation life can insure the credibility, and credibility evaluation is a very necessary approach to obtain the credibility. Combat simulation is a special simulation for its many characteristics of multi-level, more elements, overall emergence, uncertainty, morbid and multi-granularity model, and so on. Credibility is vital to combat simulation. The evaluation method is one of the aspects of credibility evaluation. In this paper, the methods of credibility evaluation are researched. The common evaluation methods are analyzed and compared. Aiming at the characteristics of combat simulation system, the subjective comprehensive evaluation method based on subject matter expert (SME) is put forward, which is applied to a combat simulation. The practice shows that the subjective comprehensive evaluation method is very effective. The results are sufficiently credible to support the application.

Device-to-Device (D2D) communication allows user devices in proximity to directly communicate with each other through reusing resources in cellular communication system. D2D improves the system capacity while it also raises some challenges on interference. This paper adopts reconfigurable antenna in D2D communication generating directional signal transmission between D2D pairs which mitigates the interference to other users. The simulations show that such scheme improve the system capacity compared to the traditional one.