Generating 24-channel PWM waves based on DSP

Author

Huang, Xuemei ; Xu, Moufeng ; Zhang, Jiaju

Author_Institution

Shandong Key Lab. of Precision Manuf. & Non-traditional Machining, Univ. of Technol., Zibo, China

Volume

12

fYear

2010

fDate

22-24 Oct. 2010

Abstract

By using the timer 1 and the compare unit 1, 2 and 3 in the Event Manager A of TMS320LF2407A, the 24-channel PWM waveforms are generated for the servo control in this paper. Based on the time-sharing mechanism, a PWM cycle is divided into eight periods of time and During each time period, 3-channel PWM waves are output from port A, port B and port E of digital I/O ports synchronously by the control of the compare unit 1, unit 2 and unit 3. This method not only avoids the design of complex hardware interface circuits, but also improves the reliability and the control accuracy of system. And moreover, it has been applied successfully in the control system of a humanoid robot of seventeen degrees of freedom.

Keywords

digital signal processing chips; humanoid robots; pulse width modulation; reliability; servomechanisms; square-wave generators; time-sharing systems; 24-channel PWM waveform; 3 TMS320LF2407A; DSP chips; complex hardware interface circuit; control accuracy; digital I/O port; event manager; humanoid robot; servo control; time sharing mechanism; DSP; PWM waveforms; time-sharing mechanism;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Application and System Modeling (ICCASM), 2010 International Conference on

Conference_Location

Taiyuan

Print_ISBN

978-1-4244-7235-2

Electronic_ISBN

978-1-4244-7237-6

Type

conf

DOI

10.1109/ICCASM.2010.5622361

Filename

5622361