Further, the accuracy of the defect detection is lower due to harsh industrial environment and human errors. Manual inspection is labor intensive, costly and less in efficiency. Still quality control of ceramic tile industry is done mostly by manually. In Ceramic tile industry the quality control process plays a major role to enhance quality standards. El presente artículo incluye resultados que apuntan en esta dirección, incorporando herramientas tecnológicas basadas en el diseño e implementación de controladores híbridos, para manipular el desempeño de circuitos convertidores de potencia como solución al problema de mantener regulados los niveles de tensión a la salida del circuito. ![]() Por otro lado, las herramientas tecnológicas actuales facilitan la implementación de algoritmos complejos de control a partir del uso de dispositivos programables como los fpga (del inglés, Field Programmable Gate Array), los fpaa (del inglés, Field Programmable Analog Array), los microcontroladores dspic, los PSoC (del inglés, Programmable System on-Chip) o los dsp (del inglés, Digital Signal Processor), combinando altas prestaciones de memoria y velocidad de procesamiento, con la flexibilidad dada por reconfiguraciones circuitales programadas. Algunos enfoques de control híbrido incluyen el control por modos deslizantes (smc por sus siglas en inglés) y el control óptimo, cuya formulación matemática busca la estabilidad del sistema a través de la teoría de estabilidad de Lyapunov en complemento con la matemática hamiltoniana y lagrangiana. The important is that analog signel have DC shift 2.5V because of signed fractional using. Then I transform it to array of fractional. I use DSPICfilter SW only for generating array of float coeficient. I am trying to filter collected samples and then show it on LCD as FFT diagram. this one), if you initialise fractionals with int values then the resulting fractional numbers are tiny, so after filtering you will most likely get 0 as the output. As can be seen in other threads on this board (e.g. Zeiger is of type fractional while ADCBUF1 is of type int. (2) If you have filtered out your 55 Hz sinusoid to leave DC, then I would expect that subtracting the average value from outSamples would simply have the effect of removing the remaining DC component.įollowing from point (1), I suspect there is a problem in this snippet: (1) outSamples is of type fractional, while average is of type int: conversion between these types is somewhat subtle (see many other threads), so you need to be careful when doing arithmetic mixing them. I am a bit dubious about this part of your code: I expect on the output of the DA converter which is conected to the ports only DC.īut there isn't DC it is a undefinable signal. On the input of the ADC there is a mixed signal of 55 Hz sin and 2V DC. >What exactly do you mean by 'code does not run'? What happens? Here is the source code of the main loop:įractional inSamples, outSamples įractional *zeiger = &inSamples // Herrmann Zeigerdeklaration Or you can tell my what I have forgotten! (I got a CD on the workshop of dsPIC30F2010 and ICD2)Ĭan anybody send this file to me. But the code does not run.ĭid anybody of you visit a dsPIC filter workshop? There one get a pdf file with the contents of the day. I am calling the filter function for each sample! IIRCanonicFilterInit( &Bandsperre_fg_50Filter ) īlockIIRCanonicFilter( &Bandsperre_fg_50Filter, inSamples, outSamples, NUM_SAMPLES ) The data from the input array SigIn is filtered with the structure filterFilter and the output is put in the output array FiltOut. ![]() s file)to the init function to initialise the structureīlockIIRCanonicFilter( &filterFilter, &SigIn, &FiltOut, FILTER_BLOCK_LENGTH ) You pass the address of the filter structure (from the. Pointer = ADCBUF1 // Ergebnisregister in Ausgabevariable schreiben While (!ADCON1bits.DONE) // conversion done? Is it necessary to switch off the ADC before a call of the filter? * turn on A/D converter and start sampling */ ![]() Now initialise your ADC and start getting the samples Unsigned int inSamples, outSamples ĭeclare a pointer and give it the address of the input array filter.sĭeclare an array for your input signal and an array for your output filtered signal The dsPIC Filter Design generates the assembly file with the filter structure e.g.
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