**2.2. Test rig setup**

388 Smart Actuation and Sensing Systems – Recent Advances and Future Challenges

which is named TR02, is indispensable for following purposes:

as same as the one used in the first damping system.

the proposed self-sensing methodology.

Parameter Value Compressed length (m) 0.155 Extended length (m) 0.208 Weight (kg) 0.800

damping force control performance.

Magneto-Rheological fluid Viscosity (N-s/m) at 40oC

Solids content by weight, %

Electrical characteristics: Maximum input current (A)

Input voltage (VDC)

Response time (s)

Mechanical characteristics: Maximum extension force (N)

Maximum operating temperature (deg)

(amplifier & power supply dependent)

**Table 1.** Technical data for the MR fluid damper RD-1005-3

Density (kg/m3)

working performance.

control purpose.

The purpose of this research is to investigate the characteristics of the damper RD-1005-3 which are then used to derive the accurate damper models as well as to design the forcesensorless controller for damping systems using this damper. Therefore, a test rig




The optimized BBM model as well as the proposed force-sensorless control system based on BBM and IBBM models might be applied not only on this system but also on other damping systems using the same dampers. Consequently, the ability of using these models for modeling and damping control needs to be verified. Therefore, a second damping system,




LORD MR fluid damper – RD-1005-3 Series

2 12

4448 71

Based on the dimensions and characteristics of the damper RD-1005-3 as well as the design

purposes, the two testing systems were designed and set up as described below.

<0.025 (time to reach 90% of max level

during 0-1A step input)

MRF-132DG 0.092 ± 0.015 2980-3180 80.98

employing the damper RD-1005-3, named as TR01, is needed for following tasks:

optimize the damper models in a comparison with some typical models.
