DSP Application on One Dimensional Signal

Patent Review: MOTOR DRIVE CONTROL USING PULSE WIDTH MODULATION PULSE SKIPPING

Application No.: 13/963,317

Patent No.:US 9,240,749 B2

Date of patent: Jan. 19, 2016

Inventors:Charles E.Green,Fenton,MO(US);

                 Joseph G.Marcinkiewicz,St.PETENS,mo(US)

Summary: A conterol system for a motor includes a pulse width modulation module,a pulse skip determination module,and a duty cycle adjusment module.the pulse width modulation module generates three duty cycle values based on three voltage requests,respectively.A plurality of solid stste switches control three phase of motor in response to the three duty cycle values,respectively.The pulse skip determination module generates a pulse skip signal.The duty cycle adjusment module selectively prevents the plurality of solid state switches from switching during intervals specifiedc by the pulse skip signal.

Link: http://www.google.co.in/patents/US9,240,749 B2 

IEEE Paper Review:Sinusoidal PWM signal generation using TMS320C6711 DSPfor power control in mobile phones Authors: K.Karthikeyan, J.Jaisheela, Dinesh Kumar M and Dr.K.Senthil Kumar
Publisher :- IEEE
Published in:Process Automation, Control and Computing (PACC), 2011 International Conference on
Date of Conference: 20-22 July 2011

Summary: 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.