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I am working on a project: Structural Vibration Control using Tuned Liquid Damper at IIT Bombay, India. We simulate earthquake in lab using seismic table. We give earthquake time histories to servo controlled single directional actuator (5 ton capacity having two servo valves 40 lpm each) to which, shake table is connected. We have NI-DAQ, VB Instruments and LabView for data acquisition and it's post processing.
While carrying out preliminary experiments on seismic table, I found that PID settings of the servo hydrolic system need to be set as per frequency content of the input time waveform. Our system being very old (18 years), we do not
have records such as process variables, tuning parameters etc with us. Moreover, I speculate that after many years of use, system parameters may have changed.
Can anybody please write me how to form equation which can be used to monitor PID control settings? I can not approach to Servo Hydraulic people as it has now merged with Instron.
Any advise/comments/hints will be highly appreciated.
Regards,
~Shashikant
While carrying out preliminary experiments on seismic table, I found that PID settings of the servo hydrolic system need to be set as per frequency content of the input time waveform. Our system being very old (18 years), we do not
have records such as process variables, tuning parameters etc with us. Moreover, I speculate that after many years of use, system parameters may have changed.
Can anybody please write me how to form equation which can be used to monitor PID control settings? I can not approach to Servo Hydraulic people as it has now merged with Instron.
Any advise/comments/hints will be highly appreciated.
Regards,
~Shashikant