Design a PID Controller for Suspension System by Back Propagation Neural Network

Table 4

The variable activation functions in the layers.

Number	The activation function
	Hidden layer	Output layer
1	logsig	logsig
2	logsig	tansig
3	logsig	purelin
4	tansig	tansig
5	tansig	logsig
6	tansig	purelin