mananshah93
New Member
Hi to all Techno-crats.....
I want to design Heater which can produce heat around 25 to 600 Celcius using DC source.(Please see block diagram in attached file before reading.)
(1) I have a Kanthal Plate as a Heating Element.
(2) I don't know how to calculate power requirement for generating this amount of heat.
(3) I want to use PID algorithm for controlling close loop system where, thermocouple as a feedback sensor. I have a Atmega 16 microcontroller.
(4)Now, for generating power equivalent to desired temperature, I have planned following flow....
(A)Microcontroller will send command to 12 bit DAC(0 for min. and 4095 for max. power)
(B)12 bit DAC will generate analog voltage according to the input from controller.(0 to 12V)
(C) Now, using this voltage I want to generate PWM signal for 24 V source(or any value DC , not specific 24V).
(D) then, this PWM signal will be given to the power generator like power transformer to heat the kanthal plate. (is this making sense?)
(E) And temperature will be sensed by thermocouple and feedback to controller..and again using PID algorithm...It repeats and maintains the temperature...
Is this making sense????? Can you guide me regarding PWM generator and power generator part...
I want to design Heater which can produce heat around 25 to 600 Celcius using DC source.(Please see block diagram in attached file before reading.)
(1) I have a Kanthal Plate as a Heating Element.
(2) I don't know how to calculate power requirement for generating this amount of heat.
(3) I want to use PID algorithm for controlling close loop system where, thermocouple as a feedback sensor. I have a Atmega 16 microcontroller.
(4)Now, for generating power equivalent to desired temperature, I have planned following flow....
(A)Microcontroller will send command to 12 bit DAC(0 for min. and 4095 for max. power)
(B)12 bit DAC will generate analog voltage according to the input from controller.(0 to 12V)
(C) Now, using this voltage I want to generate PWM signal for 24 V source(or any value DC , not specific 24V).
(D) then, this PWM signal will be given to the power generator like power transformer to heat the kanthal plate. (is this making sense?)
(E) And temperature will be sensed by thermocouple and feedback to controller..and again using PID algorithm...It repeats and maintains the temperature...
Is this making sense????? Can you guide me regarding PWM generator and power generator part...