摘要
目前船舶所使用的超声波风速风向仪只能保证在静态下准确测量。当船舶摇摆时,迎风角改变且改变速度不确定,因而引起测量误差。针对上述问题,根据超声波风速传感器的工作原理分析了动态下产生测量误差的机理,搭建了模拟船舶摇摆和倾斜的测量平台,测量了各种摇摆角度及不同摇摆速度下的风向风速数据,通过对大量实验数据的分析,提出了基于多变量非线性拟合的补偿算法,实现了船舶摇摆影响下风速风向的高准确度动态测量。
The ultrasonic anemometers currently available on the market are designed to operate under stationery states only. When ships experience swaying and swinging, the approach angle of wind changes in an inconstant way, which leads to errors in measurement. In order to solve this problem, this paper analyses the mechanism of measurement errors under dynamic conditions in the light of the working principle of ultrasonic anemometers, constructs a measurement platform simulating the swaying of ship hull, and the swinging angles and the wind direction ＆ speed under different swaying speeds are measured. Through analyzing a large amount of experiment data, this paper puts forward a compensation algorithm based on multivariable nonlinear fitting, and implements the high-precision, dynamic measurement of wind direction and speed under swinging circumstances.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2014年第6期1239-1245,共7页
Chinese Journal of Scientific Instrument
基金
国家863计划(2012AA112702)资助项目
关键词
风速风向检测
模拟平台
多变量数据拟合
动态误差补偿
wind speed and wind direction
simulating platform
multivariate data fitting
dynamic error compensation
