Procedure for determining real molding fronts and aligning simulations

A computer program product for determining positions of a real moulding material front during an injection moulding process carried out with a moulding machine, comprising a non-transitory computer-readable medium having stored thereon executable instructions, which when executed, cause a computer to perform a method comprising:

• calculating at least one simulation progression (SV) of at least one variable that is characteristic of the injection moulding process within a framework of a simulation or receiving one from a separate simulation;
• determining positions of a simulated moulding material front from the simulation or receiving them from the separate simulation;
• receiving at least one measurement progression (MV) of the at least one characteristic variable from the injection moulding process carried out as a real injection moulding process;
• choosing at least one transformation or receiving an input as to which at least one transformation is to be chosen, wherein the at least one transformation has at least one parameter (ΔV, kp, Vunknown);
• applying the at least one transformation at least once to the at least one measurement progression (MV), with a result that at least one transformed measurement progression is formed;
• determining at least one parameter value for the at least one parameter (ΔV, kp, Vunknown) such that a deviation between the at least one simulation progression (SV) and the at least one transformed measurement progression is minimized according to a predetermined error measure or according to an operator input;
• determining the positions of the real moulding material front by applying at least one inverse of the at least one transformation with the determined at least one parameter value to the positions of the simulated moulding material front, and outputting the positions of the real moulding material front;
• choosing a desired material front progression for the real injection moulding process;
• and
• based on a difference between the desired material front progression and the positions of the real moulding material front, altering settings of the moulding machine, wherein an actuator of the moulding machine is controlled according to the altered settings such that the positions of the real moulding material front are brought closer to the desired material front progression, and wherein a moulded part is produced by the real injection moulding process.