Feed Scheduling in process-integrated Numerical Controls for processes with local PT1- or PT2-behavior

• Applicant: Professor Dr.-Ing. Alexander Verl
• Subject Area: Production Automation and Assembly Technology
• Term: since 2025
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 566760905

The automation of processes generally allows for an increase in process quality, for example in terms of accuracy or reproducibility. The use of numerical controls is particularly recommended in the context of automation for non-trivial kinematics, such as those used in industrial robots. Processes such as ‘fast filament fabrication (FFF)’ have additional dynamics that need to be taken into account when planning the speed in CNC systems. This requires the integration of process knowledge into the numerical control system. The aim of this proposal is to design, implement and validate a speed planning system for CNC systems that takes process dynamics into account. This will be based on already established methods of speed planning. The integration of process and machine dynamics is achieved by defining new speed profiles that take both the process and the machine into account. The class of processes to be considered is restricted to those that behave locally either like a PT1 element or a PT2 element. The dead time behavior is to be compensated for by a flatness-based feedforward control. As part of the project, the concept is evaluated on two processes, FFF and metal casting.

• DFG Programme: Research Grants
• Co-Investigator: Dr.-Ing. Armin Lechler