Aiming at the motion accuracy measurement problem of the scanning antenna turntable in engineering practice,designs a direct motion accuracy measurement method based on the combination of polyhedron method and target method.The method of combining"electronic theodolite+target"and"planarity detector+positive polyhedral prism"is adopted to realize the detection of the angular displacement of the turntable output spindle and the rotary transformer shaft respectively,the measurement principle and implementation steps of the method are studied and the uncertainty of the method is analyzed.Compared with conventional indirect measurement methods,the designed method can reduce errors in the data conversion process and increase the credibility of test accuracy.The experimental results from the test by a scanning antenna show that this method,being easy for operation and with high accuracy,can meet the needs of motion accuracy measurement of the turntable.
国家科技期刊平台
NSTL
维普
万方数据
