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

fYear

2007

fDate

5-8 Aug. 2007

Firstpage

3031

Lastpage

3035

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICMA.2007.4304043

Filename

4304043