Engineering Insti.tute, Air Force Engineering University, Xi'an 710038, P. R. China;
Engineering Insti.tute, Air Force Engineering University, Xi'an 710038, P. R. China;
School of Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, P. R. China;
Hybrid control; variable structure control; adaptive control; switching control; high frequency gain;