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  • Limit Switch Application Notes (.pdf)
    Many machines in use today incorporate functions that are controlled electronically. A common name for these products can fall under the umbrella "CNC" machines - standing for "computer numerical control". Stated simply, the computer reads "code" and tells the machine what to do. If the machine
  • Field Oriented Control
    The actual current vector is broken-down into real and imaginary components and compared to the desired current vector. The desired current vector will produces a flux vector that generates maximum torque. Field oriented control is a motor commutation scheme which enables brushless motors to run
  • Spraywater Control Valves
    proper steam temperature. Furthermore, efficient spray control prevents thermal damage to the steam piping, the superheater and the reheater tubes as well as downstream equipment. Operating a turbine with steam above the temperature limits accelerates metal fatigue and creep. This control is necessary
  • PAT: The Value of Better Control
    This quick, one-time registration gives you access to members-only site benefits. Other challenging dynamic problems occur in very slow processes, where the process responds hours or even days after a control change is made. MPC mathematics includes a long memory of the past process dynamics
  • Motion Control Over The Ethernet
    Connecting Ethernet to machine controllers isn't a new idea. But controlling motion over Ethernet is, and this approach may signal the end of machine-mounted motion-control hardware. EDITED BY John R. Gyorki The most common multiaxis motioncontrol cards that plug into a PC's bus slot have been used
  • Taking the Guesswork Out of Pneumatic Control
    or continuous cycling. Jog control lets users manually step through machine operations. This option can be added by controlling flow to limit valves (top) or adding a binary trigger (bottom). System shutoff prevents accidental machine operation. A shuttle valve to the pilot of a power valve lets
  • Advanced Process Control: Bridge the Gap
    This quick, one-time registration gives you access to members-only site benefits. Control applications were developed for each evaporator feeding the dryer with the goal of reducing total solids (TS) variability by 50%. An audit conducted in April 2003 demonstrated that the APC solution had
  • Don t Drift out of Control
    to provide a value that is +/- .5% accurate. Sensor B is identically structured but uses a different set of random numbers. Results indicate that statistical control charts and F-test calculations identify drift and the suspect sensor much faster than conventional detection. Typically, in two-sensor

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