Research on the method to deal with delay compensation time of self-oscillation linear actuator

An effective method was proposed to deal with delay compensation time of self-oscillation linear actuator for a gun launched missile controlled with single channel. High frequency self-oscillation peculiarity of the actuator makes it rather difficult to measure and analyze the delay time of the actuator. To resolve this problem, it was proposed to use filter constructed based on missile dynamics to eliminate the uncertainty brought by the high frequency oscillation of the actuator, and to determine the delay compensation time of the actuator according to the delay of the missile normal acceleration. Data processing results show that by use of the method the delay compensation time of the self-oscillation linear actuator can be determined validly. A contrast between the amplitude-modulated rectangle wave order and sine wave order was made also in the point of view of whether it is convenient to compensate the delay time, and a conclusion that the self-oscillation linear actuator's response to the sine wave order is better than that to the rectangle wave order was offered.