Discrete transmission system added with virtual reference axis

The invention provides a discrete transmission system added with a virtual reference axis. Comprising a plurality of discrete system units and a virtual reference axis unit; wherein the virtual reference axis unit comprises a synchronous speed given module and a tensile force controller; the synchronous speed giving module collects the fed-back discrete system unit speed and gives the speed control superposition amount of each discrete system through a speed control algorithm; the tensile force controller collects the fed-back tensile force of the discrete system unit and gives the tensile force control superposition amount of each discrete system through a tensile force control algorithm. According to the technology for adding the virtual reference axis to the discrete system, all discrete transmission systems in the control area of the skin stretch-forming machine can be integrated in control, and complex process design requirements can be met cooperatively. 本发明提供了一种添加虚拟基准轴的离散传动系统；包括若干个离散系统单元和虚拟基准轴单元；其中，虚拟基