A μ synthesis control scheme was proposed for the control problem of flight environment simulation volume (FESV) when aeroengine was tested in altitude ground test facilities (AGTF) as well as the unmodeled dynamics uncertainty problem in the modeling process. At the same time

as for the large difference characteristic of cutoff frequency between temperature and pressure loop

the same weighted sensitive functions method was presented to solve the problem and the desired effect of simulation volume was obtained. The D-K iterative algorithm was used in the scheme to design μ synthesis controller of temperature and pressure

which can effectively solve the temperature and pressure simultaneous control design problem caused by system matrix without full rank. The different flight trajectory simulation results show that

the μ synthesis controller has good control effects for temperature and pressure of FESV. Meanwhile

the dynamic control error is less than 09% and the steady state error is less than 05%

which means the μ synthesis controller has servo tracking performance and robust performance.