To solve the problem of model identification of actuator in control system design of aerocraft, testing system based
on dSPACE emulator is established, sending testing signal and receiving feedback voltage are realized using dSPACE
interactive cards, communication between signal generating equipment and feedback voltage acquisition equipment is
synchronized. This paper introduces the hardware architecture and key technologies of the simulation system.
Constructing, downloading and calculating of the testing model is finished using dSPACE emulator, D/A transfer of
testing signal is realized using DS2103 card, DS2002 card transfer the feedback voltage to digital value. Filtering module
is added to the signal acquisition, for reduction of noise interference in the A/D channel. Precision of time and voltage is
improved by setting acquisition period 1ms. The data gathered is recorded and displayed with Controldesk tools. The
response of four actuators under different frequency are tested, frequency-domain analysis is done using least square
method, the model of actuator is identified, simulation data fits well with real response of the actuator. The testing
system created with dSPACE emulator satisfies the rapid testing and identification of actuator.