Tolerance Modeling and Analysis Considering Form Defects for Spaceborne Array Antenna

Guodong Sa, Zhenyu Liu, Chan Qiu, Jianrong Tan
2020 Applied Sciences  
Tolerance analysis is becoming increasingly important for tolerance design and optimization. When dealing with electromechanical products such as the array antenna, the form errors of the assembly must be considered. Traditional tolerance analysis with form errors relies on a double loop process, which is computationally expensive. A new tolerance analysis method is proposed in this paper, which can be achieved by a single loop process. First, a new tolerance modeling method considering form
more » ... considering form errors was proposed, it can represent the geometric error of a surface feature precisely. Then an effective sampling method was developed by introducing the variance separation method. An assembly simulation method was proposed to determine the final state of the whole assembly. Finally, the tolerance analysis was achieved based on the sufficient sample. The proposed analysis method was applied to an X-band spaceborne active-phased array antenna, numerical simulation results show the effectiveness of the method.
doi:10.3390/app10082840 doaj:081cacbe8b734dd29a281bdb9d742ad6 fatcat:xpecx2h5hrbnhd6oebena5duva