Sinusoidal PWM Signal Generation Using TMS320C6711 DSP for Power Control in Mobile Phones

2011 International Conference on Process Automation, Control and Computing Pub Date : 2011-07-20 DOI:10.1109/PACC.2011.5979019

K. Karthikeyan, J. Jaisheela, M. Dinesh Kumar, K. Senthil Kumar

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引用次数: 3

Abstract

Pulse Width Modulation is a method of controlling the amount of power to a load without having to dissipate any power in the load driver. PWM signals are widely used in telecommunications, power control systems, voltage regulation and in audio signal processing. This paper deals with the optimized power control in mobile applications. PWM power control systems became reality with the advent of modern semiconductor switches like MOSFETs and Insulated Gate bipolar transistor (IGBT). PWM signals can be easily generated using microcontrollers rather than Digital signal processors (DSP), but when the sensor data from light intensity sensors are processed in real time, then microcontrollers can no longer be used because of less accuracy and speed and this is where DSP comes into play. Programming a DSP to generate PWM signal in accordance with the sensor data is not an easy task since the interfacing codes are not as simple as for microcontrollers. Hence the simulation of the PWM signal has been done to study the efficiency of the C code. This work is a part of a project to develop DSP-FPGA based BLDC motor control.

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利用TMS320C6711 DSP产生正弦PWM信号，实现手机电源控制

脉宽调制是一种控制负载的功率量而不必在负载驱动器中耗散任何功率的方法。PWM信号广泛应用于电信、电力控制系统、电压调节和音频信号处理等领域。本文研究了移动应用中最优的功率控制。随着现代半导体开关如mosfet和绝缘栅双极晶体管(IGBT)的出现，PWM功率控制系统成为现实。使用微控制器而不是数字信号处理器(DSP)可以很容易地生成PWM信号，但是当来自光强传感器的传感器数据被实时处理时，由于精度和速度较低，微控制器就不能再使用了，这就是DSP发挥作用的地方。根据传感器数据编程DSP来生成PWM信号并不是一件容易的事情，因为接口代码不像微控制器那么简单。因此对PWM信号进行了仿真，研究了C代码的效率。本工作是开发基于DSP-FPGA的无刷直流电机控制项目的一部分。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2011 International Conference on Process Automation, Control and Computing

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