Research on Control Algorithm of Solvent-Free Compound Mixing Ratio Based on Feedforward Control

The output flow of the circular arc gear pump, the core component of the proportioning system of the solvent-free compound mixer, fluctuates, which affects the proportioning accuracy of the solvent-free compound mixer. In this paper, through the theoretical analysis of the output flow of the circular arc gear pump, the basic characteristics of the output flow of the circular arc gear pump are revealed. By decomposing the output flow into stable output flow and disturbance flow, the feedforward control algorithm is adopted to suppress the output flow fluctuation of circular arc gear pump. By decomposing and linearizing the output flow signal, a feedforward control system for the output flow of circular arc gear pump is established. The system modeling and simulation calculation with MATLAB verify that the feedforward control algorithm can better solve the problem of output flow fluctuation of circular arc gear pump.