This paper shows a compact integrated actuator controller design for guided missile by applying a high-performance DSP and FPGA. The Actuation system performs position control basically. To prevent overshoot and oscillation, speed signal should be measured for using as system damping effect. Several kinds of speed sensor such as tachometer, encoder, resolver can be used. At this time, if you add a speed sensor to actuation system, space burden occurs and reliability degradation is concerned due to environmental effects such as vibration / impact / temperature. In this paper, controller is designed to detect the speed by estimating from HGO (High Gain Observer) designed by the DSP software without using the speed sensor, and the controller implements a reliable performance.
In addition, the missile internal communications MIL-STD 1553B communication that has been applied to many applications costs expensive component price and needs number of parts quantitative. However, by implementing reliability proven SDLC RS422 communication thru the FPGA, the compact integration was realized. In addition to communication function, the FPGA is also designed to generate PWM for motor control and to perform ADC(Analog to Digital Converter) function.
For verifying the performance of actuator controller, consideration of actuation system level performance should be considered. Actuator used in this study was configured to have high position accuracy and fast response by applying BLDC motor.
In case of actuation system simulation, electrical / mechanical and control system should be integrated and should be accompanied by the mathematical modeling. This paper was described with comparison results between simulation and actual test, and then checking the adequacy.
The tests and results listed in this paper are shown in the form to determine the performance of the actuator controller from the result performed in the actuation system level. All test data are measured through the test controller and actuator by direct experiment.