摘要
针对传统光电平台受安装空间和自身重量限制的问题,采用了一种捷联式光电稳定平台方案。在分析捷联平台运动学基础上,建立了捷联式光电稳定平台的动力学模型。根据捷联平台的工作原理,设计了捷联式光电稳定平台的控制模型,推导出捷联平台的闭环控制系统稳定条件,并进行了其稳定回路控制仿真研究。结果表明:系统的闭环增益和平台转动惯量决定了系统抑制扰动的能力;系统带宽必须大于由转动惯量和期望转速值所确定函数的最大值,才能保证捷联平台系统的稳定性。
A scheme about strapdown photoelectric stabilized platform was adopted to solve the problem that application of traditional photoeleetric platform was limited by the installation space and theirs own weight. Based on analysis of strapdown platform kinematics, dynamic model of the strapdown photoelectric platform was established. Aecording to the working principle, control model of strapdown photoelectric stabilized platform was designed, and the stability condition of closedloop control system was derived. Finally the stabilization loop control simulation was carried out. The results show that the disturbance-suppressed ability of the closed-loop control system was dependent on the system gain and the platform inertia. The system bandwidth must be greater than the maximum value of the function which was defined by the inertia and the desired speed to guarantee the stability of strapdown platform system.
出处
《光学与光电技术》
2015年第5期64-70,共7页
Optics & Optoelectronic Technology
关键词
捷联平台
稳定平台
动力学模型
稳定条件
strapdown platform
stabilized platform
dynamic model
stabilization condition
