In this chapter, an improved deviation coupling control structure has been proposed by improving both the following controller and the compensator. Linear active disturbance rejection control had been adopted as the following controller. The structural coupling of the compensator had been enhanced, and the fixed gain had been replaced by the PI controller based on the Ivy algorithm. The problems of poor coupling, poor synchronization, and weak regulating ability when facing complex working conditions of the typical deviation coupling control structure had been solved. A three-motor control system based on typical deviation coupling and a three-motor control system based on improved deviation coupling had been constructed. By comparing the simulation results, it can be obtained that the three-motor control system based on improved deviation coupling has less overshooting, faster response speed, smaller synchronization error, and high control performance.