Cement particle size control based on improved model free adaptive control

For the cement combined grinding system, this paper briefly introduces the technology, takes the cement particle size as the key index, and describes the mathematical model. Then the particle size is controlled by the improved model free adaptive controller(IMFAC), which linearizes nonlinear system dynamically based on the pseudo-partial-derivative (PPD) concept, and the tracking-differentiator(T-D) is introduced to track the output signal and its derivative and predict the plant future output. The simulation results show that the control performance of improved model free adaptive controller is better than conventional model free adaptive controller, and it has stronger inhibition effect on disturbance.