Application Research Of Compound Control In Kinetic Kill Vehicle

Kinetic kill vehicle, by means of huge kinetic energy durning itself high speedflighting, which can direct impact and damage the coming target with "point-to-point", isthe important defence weapon to antiballistic missile and anti-satellite in the missiledefense system. In order to intercept the coming target with high maneuverability, thekinetic kill vehicle should have the more quickly response speed and bettermaneuverability. Direct lateral force and aerodynamic force compound control can reducethe response time, increase available overload and improve maneuver performance. Thispaper mainly studies the application of the compound control on the kinetic kill vehicle.First of all, the mathematical model of direct force aerodynamic force compoundcontrol kinetic kill vehicle is established. This model describes the influence of the directlateral force and direct force torque on the missile attitude, which is built on the traditionalaerodynamic missile relevant coordinate systems.Secondly, direct force subsystem is analyzed and studied. Starting from the pulsemotor working mechanism, the forming process of the direct lateral steadystate is modeledand analysised. The task performance of the pulse motor influenced by the spin angularvelocity of the projectile body is measured, and a switching strategy based on the viewangle acceleration as the subsystem switch points is proposed. The parameters ofdetermine the ignition number is indicated from the response tense. A compensationalgorithm of optimization the ignition number is given to revise the migration which isproduced by missile spin.After that, linear quadratic optimal is applied to design the pitching and yawingdouble channel decoupling control. Robust control is employed to design pitching channelautopilot with uncertain parameters and noise disturbance, and the dynamic performanceand robust stability of composite robust control is verified. Double loop sliding modevariable structure control scheme is proposed to simplify the control structure, reduce thehigh frequency noise interference. And tracking control of the pitching, yawing and rollingchannels’expected attitude angle is realized.Finally, the simulation example verifies the fine decoupling capability, better dynamic performance and robust performance of the compound control scheme. It canreduce the influence of the measurement noises and jamming signal, keep good robustperformance stability. The kinetic kill vehicle under direct lateral force and aerodynamicforce compound control can increase control moment in shorter time and provide largeravailable overload to achieve the end direct collision intercept.