航空器的稳定与控制（英文版）：lecture_16_sys_1

Choose Model Set Model Not OK: OK: Use it! Prior Knowledge Experiment Choose Criterion Calculate Model Data Validate Revise The System Identification Loop. Design of Fit Sample outputs 40 50 60 70 80 90 100 ?2 ?1.5 ?1 ?0.5 0 0.5 1 1.5 2 Y U V Time 2 1.5 1 0.5 0 ?0.5 ?1 ?1.5 ?2 40 50 60 70 80 90 100 Y c V Time 0 ?1 10 ?2 10 10 0 Mag act SPA arx221 arx441 ?1 0 10 10 ?50 ?100 ?150 ?200 ?250 ?1 0 Phase (deg) act SPA arx221 arx441 10 10 Freq (rad/sec) 0 ?1 10 ?2 10 10 0 Mag act oe221 arm2221 bj22221 ?1 0 10 10 ?50 ?100 ?150 ?200 ?250 ?1 0 Phase (deg) act oe221 arm2221 bj22221 10 10 Freq (rad/sec)