切换服务系统的稳定性及交叉口信号配时-控制理论与应用.PDFVIP

30 2 Vol. 30 No. 2 2013 2 Control Theory Applications Feb. 2013 DOI: 10.7641/CTA.2013.20374 , , (1. , 100124; 2. , 100124) : , , . , , . , . , . . : ; ; ; ; ; : TP273 : A Stability of switched server system and signal timing of intersection HE Zhong-he , CHEN Yang-zhou , SHI Jian-jun (1. College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China; 2. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China) Abstract: For a buffer with a large amount of work, under the service strategy ‘empty buffers in a fixed sequence’, the server has to take a longer time to empty this buffer, making other buffers unable to be served timely. Motivated by this problem, we propose the service strategy called ‘empty buffers in a fixed sequence with upper limits of service-time’. The server assigns each buffer an upper limit of service-time such that each buffer can be served fairly. It is proved that switched server system under the proposed service strategy is periodically stable when the total buffer load is less than the ratio of the minimum to the maximum of the buffer service-time adjustment factors. Furthermore, the signal timing of an intersection is modeled as a switched server system, and the proposed service strategy is directly applied to the signal timing of the intersection. The effectiveness of the proposed methods is verified by the simulation for an intersection based on practical data. Key words: hybrid systems; switched server system; per