基于全数字模型辨识的高精度跟踪系统设计  

Design of High Accuracy Tracking System Based on Full Digital Model Identification

作　　者：蔡美华[1] 贾琦[1] 

机构地区：[1]中国电子科技集团公司光电研究院,天津300308

出　　处：《光电技术应用》2016年第4期73-76,共4页Electro-Optic Technology Application

摘　　要：目前工程上对光电跟踪系统的控制器设计多数采用基于被控对象数学模型的控制策略。模型的辨识是否准确,如何开展控制器设计成为系统的难点。利用DSP控制器对光电跟踪系统进行全数字方式的传递函数测试,在线处理测试数据,同时DSP控制器通过接收系统期望的特性参数,自动计算出校正参数,完成控制器框架设计。根据跟踪目标特性,结合跟踪误差特点及工程经验库,提出准速度/加速度补偿算法,优化控制器,该方法已成功应用于某光电跟踪系统。基于模型辨识设计的高精度控制器设计方法简单、实用、无附加成本,提高了系统跟踪精度,具有较好的使用效果。In engineering application, the control strategy based on the controlled object mathematical modelis adopted to design the controller of electro-optical tracking systems. If the model identification is accurate and howto develop controller design are become system difficulty. A data signal processor（DSP） controller is used to per-form full digital transfer function test to the electro-optical tacking system, process test data on-line to get the strate-gy mathematical model. The desired system parameters are received by DSP controller to calculate the corrected pa-rameters automatically and finish the design of the controller framework. According to features of the tracking tar-get, combined with the characteristics of tracking errors and engineering experiences, the quasi-speed and accelerat-ed speed compensation algorithms are proposed to optimize the controller, which is has already been used in a cer-tain electro-optical tracking system successfully. The design method of high accuracy controller based on modelidentification design has the characteristics of simple, practical and without additional cost, which improves systemtracking accuracy and has better operation effect.

关 键 词：全数字化模型辨识 光电跟踪系统 DSP控制器 准速度/加速度补偿 跟踪精度 

分 类 号：TN820.4[电子电信—信息与通信工程]