摘要
车载移动卫星通讯系统在运动过程中为了始终保持天线对准所使用的地球同步卫星,需要根据车载体的运动状态实时调整天线平台伺服系统PID控制参数,而车载体运动姿态的变化能直接反映到陀螺输出信号。论文分析了路况和车速对陀螺输出数据的影响,并在MATLAB中进行了仿真验证;在对各种路况下采集的陀螺信号在时域中进行了统计特征量的分析后,得出了依据陀螺输出信号实时判断车载体运动状态的方法。
In order to keep its antenna tracking the geostationary satellite, the vehicle-carried mobile satellite communication system adopted PID adaptive control algorithm, and the system needed to adjust its control parameters according to the status of the automobile real-timely. Because the influence of the road roughness and the automobile speed to the automobiles status can be reflected to the output signals of the gyros, the purpose of this paper is to judge the automobiles movement status by means of the research of the gyros output signals. Thus to afford the attestation of the vehicles running status for the system.The influence of the road roughness and automobile speed to the gyros' output data is analyzed in the paper, and then the analysis results are proved through emulations in the MATLAB environment. Finally, a method to judge the automobile's running status is got according to the gyros singles.
出处
《机电工程技术》
2007年第11期83-86,共4页
Mechanical & Electrical Engineering Technology
关键词
车载移动卫星通讯天线系统
角速率陀螺
路面不平度
功率谱
仿真
the vehicle-carried mobile satellite communication antenna system
the velocity gyros
road roughness
power spectrum density
simulation
