Frequency of Acceleration and the Implications for Precise Control
When designing or retrofitting a machine to improve cycle times, one consideration that frequently gets overlooked is the rapid accelerations and decelerations that are required by short move times. Management wants faster throughput, but in order to achieve that, the machine not only has to move quickly, but it also has to speed up and slow down quickly, too. This can create a controls headache, because hydraulic systems are inherently flexible by nature. Without careful planning, the desired precision may never be reached because the system is just too sloppy.
An advanced motion controller, such as the RMC family from Delta Computer Systems, has control algorithms that can compensate for loose, sloppy systems and achieve precise control results. These tools are easily applied and understood using the RMCTools software. As a result, the system can be optimally sized, meaning lower costs for actuators, power units, and valves.