Dynamic pneumatic triaxial systems DYNATRIAX
Merek : Wykeham Farrance/ControlsGroup – Italia
Standard : ASTM D5311
Model : 31 - WF7005
Fitur Utama :
General Descriptions :
DYNATRIAX apparatus is a computer controlled servo-pneumatic systems, designed to perform the static and dynamic stages of a triaxial test. The systems manage three closed loop axis:
The base system includes:
Triaxial load frame - Tritech 50 or Tritech 100
The Tritech digital loading frames feature a microprocessor controlled drive system, specifically designed to perform both static or dynamic tests.
Actuator
The double acting pneumatic actuators are digitally controlled and includes an integrated LVDT displacement transducer to control the position and the displacement of the piston during the test.
Data Acquisition, process & control system
The unit manages the three closed loop axis (vertical load/displacement, cell and back pressure) with a control loop rate of 10 kHz. It provides the automatic control of the system and drives the servo-valve units of the three axis and two on/off valves, one connected to the drainage line and one connected to the air main supply of the triaxial cell. The CDC communicates with the PC through an Ethernet communication link (1 Gbit/s). The CDC has sixteen transducer input channels using 16 bit ADC.
PID control
An extremely efficient algorithm with larger gain ranges gives enhanced sensitivity, making it easier to tune the system and achieving a more accurate waveshape.
New features include manual and automatic amplitude controls which compensate for small changes that may occur in the system during cycling, ensuring that the required peak and valley levels are consistently maintained.
The improved tuning panel, with its more user-friendly interface, provides all the tools necessary to optimise system control during static and cyclic test stages.
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