Finally, this paper presents an improved model of the magnetic chain, using a single neural network PID controller to adjust the stator flux, and set up the corresponding flux estimation model.

The paper puts emphasis on the application of BP artificial neural net work model to evaluate the port enterprise supply chain risk. Then it studies on the risk handling and risk precaution.

In the monomer weighing aspect, this paper using the function chain neural network method to model building and study , Compensation electric bridge misalignment error.