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Item Information   Holdings       More by this author     Tran, Andy     Subjects     Process control     Quality control -- Standards     Adaptive control systems     Hydraulic presses -- Design and construction     Forging machinery     MSE Project.     Browse Catalog     by author:      Tran, Andy       by title:      The automation contr...         MARC Display

The automation control process for 15,000 ton water hydraulic press / Andy Tran. by Tran, Andy Subjects Process control   Quality control -- Standards   Adaptive control systems   Hydraulic presses -- Design and construction   Forging machinery   MSE Project. Description:  215 leaves : ill. ; 29 cm. Contents:  Advisor: John E. Ley. Committee members: Dr. Glenn Wrate, Dr. Hadi Saadat. Background -- Goal -- Significance of project -- The hydraulic press system -- Press controller design specifications -- Mechanical and metallurgical analysis -- Computer modeling -- Process modeling -- Hardware design -- Operator display design -- Results and discussion -- Conclusions -- References -- Appendix A) PLC ladder diagram B) Assembly drawing C) Schematic diagram D) Press test data E) Series 7500 Intelligent LDT Interface Module manual. My project is to upgrade a forty-five year-old manually operated 15,000-ton hydraulic press equipped with a single manually operated joystick controller driving hydraulic valves. The current manual operation has limited repeatability, low reliability, and will not meet customer requirements for ISO 9000 certification. This project adds both semi-automatic and automatic modes of operation using a Programmable Logic Controller (PLC), a Man Machine Interface (MMI) and an industrial computer. A database containing parameters such as position, velocity, and pressure is created. These parameters are monitored, controlled, and recorded at preset sampling rates through Supervisory Control and Data Acquisition (SCADA) systems via a Data Highway Plus (DH+) communication network on an industrial PC. The PC also is equipped with a network card for transferring database files to a business system at periodic intervals. The MMI allows the operator to easily and accurately set up the system and provides a visual indication of the operation. The equipment controlled, in addition to the press, includes a hydraulic fluid power souce that is equipped with (4) 300 hp, 100 gal/min Worthington pump motors (piston driven), and a 900 hp, 300 gal/min Aldrich pump for higher volumes. These pumps supply water with chemical lubricant to (2) 37 ft long, 5 ft in diameter accumulator bottles, which are level and pressure controlled at 1,650 gallons and 4,600 psi by the PLC via DH+.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .T678 2001 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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