IMPLEMENTATION OF FRACTIONAL ORDER TRANSFER FUNCTION USING LOW COST DSP

In this paper, different fractional order transfer functions are taken first and discretized them using available methods and filters (i.e. Oustaloup or modified Oustaloup). Coefficients of discretized transfer function are calculated and scaled using Q15 number system to get the coefficients in the range between -1 to 1, and converted into equivalent hexadecimal number. These coefficients are entered into the Micro C code that is generated using filter design tool of Micro C for dsPIC microcontroller. Also the simulation results are validated using EasydsPIC4 development board.