Multi-Robot Systems Based On Wireless Lan Resrarch

Multi-robot system is considered as a complicated system with a group of robots. In order to make robot cooperate effectively, the problem of information interaction among the multi-robots must be solved. Based on the information processing and transmission procedure of the multi-robot system, the control and collaboration among robots need be improved. Therefore, the robustness, reliability and consistency of the Multi-robot system can be guaranteed.The wireless local area network multi-robot system is mainly studied in this paper. Firstly, the architecture of multi-robot system, communication mode, communication model, cooperation mode and the performance are presented. Multi-robot communication properties are improved by choosing the suitable standard of wireless local area network, which is illustrated by the IEEE802.11standard in contrast at the same time. Significant influence on the wireless local area network communication is exerted by which is the core technology in the MAC layer. Influence factors of wireless local area network are also taken as the problem needs to be solved for the construction system. And the time delay characteristic is considered as the key of the whole communication system performance.Then, the access mechanism, the robot quantity and communication content are set and simulated in NS-2, while802.11g wireless local area network standard is selected. The influence on time delay characteristic which is from the robot quantity, high and low load and access mechanism, is analyzed in this paper.At last, facing the huge and high transmission rate of the robot system, further optimization of robot communication system is needed. By comparing the EDCA mode of the802.11e standard and the DCF mechanism of the802.11b standard, delay characteristics is simulated. The time delay characteristic is improved by the DCF access mechanism of802.11e standard, which is shown in the analysis and simulation results.Multi-robot communication system based on802.11g standard is constructed in this paper. The time delay characteristic is simulated. In addition,802.11e standard is proposed as robot communication environment plan, and delay characteristics are really optimized in practical simulation.