遥测系统再认识

遥测系统是闭环系统,不是惯称的开环系统。与控制系统相比,遥测系统具有三大特点:测量信息源的不确定性;反馈通道与主通道的相关性;系统误差主要源于主通道。研究并获取系统传递函数是系统设计的重要内容,而机理分析和系统辨识正是适合该需求的有效措施。

The Re-perspective of Telemetering System

Telemetering system is a closed-loop system,not an opened-loop system as considered before.Telemetering system has three main characteristics compared with control system: the uncertainty of information resource under measured;the relativity between the feedback channel and the main channel;the system's error depends on the character of the main channel.A main task of system design is researching and obtaining the system's transfer function. Mechanism analysis and system identification are the effective methods for such requirement.