Open loop track alignment methodology

摘要

This paper discusses an automated open loop track alignment methodology that reduces the effect of many open loop tracking error sources without impacting system cost.An error model is developed for the Stirling Energy Systems; solar concentrtor (developed by McDonnell Douglas in the 1980s).The individual error sources,the make-up of those individual errors,and the resulting error transfer function are discussed.A previously-developed method is described which reduces these errors by calculating more accurate command angles.This method has been extended to include additional error sources and a technique has been developed for estimating the error parameters from performance data such as beam centroid,sun sensor data,power output,etc.Simulation results are presented that show that concentrator physical and installation errors of degress or more can be reduced to a few tenths of a milliradian.