The GDS Force Actuator (GDSFA) is a general
purpose loading system with feedback control and continuous displays
of force and displacement. The unit has an IEEE 488 GPIB or RS232
computer interface, and a unique GDS development as an option:
Virtual Infinite Stiffness (VIS). These outstanding features coupled
with our software, GDS digital pressure/ volume controllers, and the
GDS Data Interface give you unlimited possibilities in conventional
and advanced PC controlled testing of soil and rock.
Download full
specification datasheet as
pdf
[100kb]
What are its
uses
The GDSFA comprises a stepping motor and gearbox which drives a ball
screw. Rotation of the screw displaces a ball nut which is captive
in a thrust cylinder that slides on a linear guide. The complete
mechanism is rigidly fixed to a base plate. The base plate is
attached to the experimental rig and the thrust is applied by the
thrust cylinder.
Force is measured by a load cell which can either be fixed to the
end of the thrust cylinder or which can be fixed to some other part
of the apparatus under test. The motor and gearbox is fixed to the
base plate. Displacement is gauged by counting the steps to the
stepping motor. The base plate is located into the experimental rig
using a keyway and is bolted in place.
GDS
Instruments is an ISO 9001:2000 credited company.
