FPGA-Based Single-Chip Servo System for Five Axes Actuators

This paper presents a novel design scheme of the five-axis actuator servo system for unmanned helicopter. According to the designed time schedule, five actuators are driven in synchronism by a digital controller implemented on one-chip field programmable gate arrays (FPGA). For the single-chip system, reliability of the actuator system is further improved, the arithmetic resource of the FPGA is fully used and the space occupation of the system is greatly compressed. The experimental results indicate that the servo system can operate with very satisfying dynamic and static performances, and the consistency of five axes is perfect.