Control upgrade downgrades variances

摘要

A structural foam molder reduced a 7-second variation in cycle time to less than 50 msec by adding a closed loop hydraulic motion controller to an open loop machine.A Model RMC100 motion controller from Delta Computer Systems Inc.(Vancouver,WA)was interfaced with the machine's open loop Maco 8000 machine control to provide closed loop control over the injection unit's hydraulic cylinders.