Effect of command filter in actuation control system of smart UAV

Smart UAV which is the unmanned aerial vehicle with the type of tilt rotor has each actuation system for nacelle tilt, flaperon, elevator and rotor. Its actuation system consists of actuator and controller with fault redundancy by dual mode. The control algorithm is designed to satisfy the control requirements based on the time delay control (TDC), in which the first and second derivatives of command are used, and is tested and evaluated in the environment of load. Actually the actuation command is transmitted from flight control computer to actuator through actuator controller. In actuator controller, the command which is received by 50Hz from digital flight control computer (DFCC) is transmitted to actuator by 1000Hz. In order to obtain the derivatives of command and to compromise effectively the discrepancy of update rate, the command filter is considered and evaluated in the environment of load test. In this paper, the effect of the command filter in TDC is described in applying it to actuation system of Smart UAV.