Electric & Hydraulic Power Steering Test Systems | MTS
Apply highly precise steering torque, lateral and vertical inputs to characterize, test and tune electric and hydraulic power steering systems. Available in compact 3- and 5-axis configurations, these systems are deployed worldwide by suppliers and OEMs to evaluate steering durability and characterization for passenger cars, SUVs and light trucks under real world loading conditions.
A highly sensitive low-torque steering head module accurately replicates vehicle input stiffness and inertia, and features a six-axis positioner to match vehicle geometries exactly
Industry Standard
FlexTest controls and RPC software provide a highly flexible programming environment, offering function generation, time history playback and block cycle loading,
Versatile
Optional environmental chambers, vehicle bus integration solutions and a human-in-the loop interface can be integrated to accommodate evolving test requirements
Accelerated Testing
MTS Steering Systems can be integrated into hybrid simulations to extend test system utility into the early stages of vehicle design
Technical Overview
Low-Torque Steering Head Module (steering Input)
Power steering pump drive system
Power steering fluid temperature conditioning
FlexTest Controller
User Interface
T-Slot Bed Plate
Tie Rod Inputs (335: lateral; 337: lateral & vertical)
Steering Rack Reaction Fixture
Hydraulic Distribution/Accumulation
Steering System Test Specimen
Units
Model 335 (3-Axis)
Model 337 (5-Axis)
Steering Input Assembly
Maximum Steering Input Angle
± deg
1080
1080
Maximum Steering Input Velocity
deg/sec
1200
1200
Maximum Steering Input Torque
Nm
113 (optional 226)
113 (optional 226)
Operation Frequency
Hz
0.1-20
0.1-20
Tie Rod Input Assembly
Tie Rod Input Lateral Stroke
± mm
125
125
1Tie Rod Input Lateral Velocity
mm/sec
350
350
2Tie Rod Input Lateral Force
kN
15
15
Tie Rod Input Lateral Frequency
Hz
0.1-20
0.1-20
Tie Rod Input Vertical Stroke
± mm
N/A
125
Tie Rod Input Vertical Velocity
m/sec
N/A
3
Tie Rod Input Vertical Force
kN
N/A
34
Tie Rod Input Vertical Frequency
Hz
N/A
0.1-50
The lateral input velocity can be changed based on unique customer test requirements, changing this parameter requires re-configuring hydraulic supply and distribution components accordingly.
The lateral input force can be changed based on unique customer test requirements, typical forces are between 15 and 25 kN peak force
MTS steering test systems feature an innovative, highly sensitive low-torque steering head module optimized for measuring steering effort.
Integrates the torque sensor, motor and steering wheel angle feedback in a single, compact footprint
Accurately replicates vehicle input stiffness and inertia, enabling realistic tests with extremely high-resolution measurement at very low torque magnitudes:
113 Nm with resolution of 0.00001347 Nm, Noise floor of +/- 0.004 Nm
226 Nm with resolution of 0.00002694 Nm, Noise floor of +/- 0.008 Nm
Six-axis positioner that enables test engineers to match vehicle geometries exactly.
Hand wheel can be engaged at any time during testing
Steering inputs can be applied at the rack, I-shaft connection point or steering column input
Also suitable for traditional durability steer tests
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