> I don't understand. > > Please explain "output of the NN is multiplied by a system" > > If you know what the output of the system should be for a given NN input, why > don't you just train the net to yield that desired output? > > Hope this helps. > > Greg
Thanks for reply, Greg
I have a desired target T and a plant system P. I want to use the NN as a controller which will be infron of the plant P. In more details, if the target T responds by an input in, then I insert the input to the NN to results, Onn, then this, Onn, will be used as input to the plant P. I want output of the plant P should track the target T. Therefore, I need the error T-P should be back propagated through the Plant Inverse and then used to train the NN. I am trying to use the train command and I don't figureout how to specify a special error to be used for the gradient in train command? Or any other suggestions. I have to reprogram the whole feedforward and backpropagation from scratch without the facility which available in train command, I did it but it's slow and need a lot of work to specify the correct initials and gradient.