Hello all !
I know how to determine a transfer function. I open the valve completely (heaviside step function) and I can take the 63% of the max for tau, the maximum of the output is K, and for an order 1 I have K/(tau*s+1). This is for order 1. Order 2 and more I learnt at the uni a method called Strejc really similar to the one for order 1. I tried them, they work great. (there are people from all around the world here so maybe you have another method)
but for a tank I want to control the pressure of vacuum and N2. So.... there are two different transfer function. Is there a way to merge the two functions so I can control the whole system ? Should I add them ? multiply them ? Any other way ?
Thanks so much !
I know how to determine a transfer function. I open the valve completely (heaviside step function) and I can take the 63% of the max for tau, the maximum of the output is K, and for an order 1 I have K/(tau*s+1). This is for order 1. Order 2 and more I learnt at the uni a method called Strejc really similar to the one for order 1. I tried them, they work great. (there are people from all around the world here so maybe you have another method)
but for a tank I want to control the pressure of vacuum and N2. So.... there are two different transfer function. Is there a way to merge the two functions so I can control the whole system ? Should I add them ? multiply them ? Any other way ?
Thanks so much !