Synchronous control method and synchronous control system for double hydraulic cylinders

The invention discloses a synchronous control method and a synchronous control system for double hydraulic cylinders, which are based on displacement signals output by closed loops of cylinder bodies in the double hydraulic cylinders. Inputting the displacement signal into a first displacement function, and outputting a tolerance error; controlling the opening degree of a proportional valve based on the tolerance error so as to adjust a synchronous control loop of each cylinder body; real-time distribution is carried out based on a closed loop and a synchronous control loop under regulation and control of a double-cylinder error tolerance function, the closed loop and the synchronous control loop are coupled so as to improve synchronous control precision of the hydraulic double cylinders, the synchronous control loop is added on the basis of the closed loop, and the synchronous control loop is added on the basis of the synchronous control loop. And the closed loop and the synchronous control loop are distribu