I want to use Simulink to calculate the Average voltage from a PWM Signal. Although I'm not entirely sure how should do it so it works robustly.
The eventual use is to have it working in real time using xpc target but I wondered if anyone could explain even a way to calculate it in a continuous way even.
To anyone that does not know a PWM signal is a Pulse signal that width can be modulated , hence the name.
The voltage of a PWM is the Peak voltage * duty cycle
The duty cycle is the percentage of that the signal is "ON" in any one period
so if the period (of the signal) is 5 seconds and the signal is "ON" for 2 seconds the duty cycle is 40 %
So if we look at the picture above we see 5 examples.
Lets say my on voltage is 20 Volts and my off voltage is 0 Volts
So with a duty cycle of 100 %
Average volt = 20 * 1 = 20 Volts
80 % = 16 Volts
50% = 10 Volts
20 % = 4 Volts
0 % = 0 Volts
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So Basically what I want is a way to calculate the:
Peak Voltage of the signal being sent (reseting after every new period)
Duty Cycle of the Signal
and possibly the frequency of the signal
Thanks any advice welcome
