I-Shaft Test System

i-shaft test linear force position rotary torque angle

The MB intermediate shaft test system is used to evaluate stick-slip, lash, torsional stiffness, hysteresis and other performance characteristics of I-Shafts, inner tie-rods, columns, couplings and isolators or combinations under environmental, wear and various boundary conditions.

Data Sheets

The MB I-Shaft system performs stick-slip tests at ambient conditions or, with the I-shaft encased in an environmental hood, at hot & cold temperatures (for example -40 degC to +80 degC) to measure stick-slip performance during long strokes, short frequent strokes, new, after wear, dry, lubricated, and other in-use conditions. The system uses a long-stroke, ironless linear motor (Rack Load Simulator) to stroke the I-shaft spline providing high and low frequency, long and small displacement sine motions without noise or internal friction that could mask the stick-slip response from the test item. A slotless rotary motor (Driver Simulator) applies varying torsional loads or oscillations to the test specimens. Forces are measured with a load cell and torques with a rotating torque sensor. The bench can be used to fulfill GMW17207 and GMW15599.

The equipment can also perform rotating friction and turning torque vs. angular position measurements on I-shafts mounted in their in-vehicle positions during several clockwise and counterclockwise rotations. The bench can be used to fulfill GMW17444. The system can measure and report torsional hysteresis, torsional lash, on-center rate, and off-center rate of an I-shaft mounter per in-vehicle coordinates. The bench fulfills GMW17422.

When fitted with TTL quadrature encoders mounted to the steering column, shaft, etc. component torsional performance and hysteresis can be evaluated. Torque resolution is as fine as 0.1N-m and angular resolution of wrap-up of 0.01 degrees. Test stand software, a variant of SMTS, controls the frequency and displacement of the linear motor and torque conditions of the Driver Simulator. The software acquires, computes and outputs position, wrap-up, hysteresis and other outcomes of important. The software can also control the environmental chamber supplying conditioned air.

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MB Dynamics delivers steering test equipment to help fulfill a myriad of application test requirements, or jobs-to-be-done.

A quiet (acoustically and electrically), non-hydraulic, turnkey lab test system.

Provides an executive function over the embedded control systems for the MB DS and the two MB RLSs.

Simulates driver functionality by generating repeatable and precise steering maneuvers.

Quietly produces accurate, controlled, inputs to the in-vehicle steering wheel to enable acquisition of acoustic data and wheel motions

Electric, electrodynamic or pneumatic devices that apply programmable static, quasi-static and dynamic loads to one or both tie rods

As a variant on a SMTS, our Column EPS Test Bench is a quiet, turnkey lab test system.

Used to evaluate stick-slip, lash, torsional stiffness, hysteresis and other performance characteristics.

Provides a column stand for mounting a steering column assembly, column EPS, and or a Driver Simulator.

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