超声测距变结构控制系统的研究  

Study on the variable structure control system for ultrasonic distance measurement

作　　者：胡兰[1] 张逸芳[1] 

机构地区：[1]山东矿业学院机电系,泰安271019

出　　处：《应用声学》1997年第1期28-31,共4页Journal of Applied Acoustics

摘　　要：本文在超声测距系统中采用了变结构控制理论，根据所测物体的反射界面和介质性质，自动调节超声波发射换能器的功率．建立了超声测距系统的数学模型，对系统方程进行了理论分析，研究了变结构控制系统的设计方法，并结合应用实例，对钻井法凿井用超声波测井仪中超声测距系统进行了计算机仿真，并在实验室中进行了实验．In this paper, the variable structure control theory is applied to the ultrasonic distance measurement. The launching power of the ultrasonic transducer is to be adjusted automatically, according to the nature of the reflecting medium and the shape of its face.The mathematical model of the ultrasonic distance measuring system is established, and the state equation of the system analysed. The method of design of the variable structure control system is also considered, and its computer simulation is carried out, for a practi-cal application──the ultrasonic distance measurement by the ultrasonic drilling logger.The experiment has been performed successfully in the laboratory.

关 键 词：超声测距 超声波换能器 变结构控制 

分 类 号：TB552[理学—物理]