Experimental Issues in Testing a Semiactive Technique to Control Earthquake Induced Vibration

Table 2

Acquisition needed to the control activity.

Transducer	Physical quantity acquired
LVDT	Absolute displacement of the base level
LVDT	Absolute displacement of the 1st floor
LVDT	Absolute displacement of the 2nd floor
—	Voltage commanding the devices
Voltage transd.	Voltage in the damper’s circuit
Current transd.	Current in the damper’s circuit
LVDT	Relative displacement of the dampers
Load cell	Axial force on dampers piston