Title :
Application of the Magnetic Encoder in Actuator Servo System
Author :
Lin, Qi ; Li, Tiecai ; Zhou, Zhaoyong ; Wang, Shuang ; Guo, Haiya
Author_Institution :
Harbin Inst. of Technol. Shenzhen Graduate, Shenzhen
Abstract :
This paper presents the application of magnetic encoders in the actuator servo system based on FPGA for the unmanned helicopter. The magnetic encoder outputs two quadrature voltage signals which change according to the angle position. The digital decoding circuit is designed based on the vector rotation algorithm in the controller, which can provide a digital angular position with 16 bit resolution. By building the digital decoding circuit in the controller, hardware sources in FPGA are fully utilized and the reliability of the system is improved furthest.
Keywords :
avionics; decoding; digital arithmetic; digital signal processing chips; field programmable gate arrays; helicopters; microcontrollers; position control; remotely operated vehicles; servomechanisms; FPGA; actuator servo system; digital decoding circuit design; magnetic encoder; positional servo control; quadrature voltage signals; unmanned helicopter; vector rotation algorithm; Actuators; Algorithm design and analysis; Buildings; Circuits; Decoding; Field programmable gate arrays; Helicopters; Servomechanisms; Signal resolution; Voltage; FPGA; Magnetic encoder; decoding circuit; single chip;
Conference_Titel :
Mechatronics and Automation, 2007. ICMA 2007. International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-0828-3
Electronic_ISBN :
978-1-4244-0828-3
DOI :
10.1109/ICMA.2007.4304043
