H_∞ gain-scheduled missile controller design using linear parameter-varying feedback

The dynamic characteristics of missile vary substantially with flight conditions such as flight Mach number, altitude and angle of attack. Therefore, in order to achieve adequate levels of robustness and performance, a controller that also varies during operation has to be designed in missile control. This paper is concerned with the application of advanced mixed linear parameter-varying (LPV)/μ techniques to global control of a missile. The techniques can produce an H_∞ based LPV controller, which is automatically "gain scheduled" with respect to the flight conditions and adapts to the variation of the missile's dynamic characteristics. The power and effectiveness of the resulting controller are demonstrated by nonlinear simulations.