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Modular rotary steering test bench

This test bench is used to test steering systems with rotary steering support on the steering column. In addition to electric power steering (EPS) systems, it is also possible to test superposition steering. The flexible base plate combined with the various drive systems and the possibility to hold it in a fixed position gives our customers maximum flexibility.

Features:

  • Modular test bench for
    • Electromechanical power steering with servomotor on the steering column (C-EPS)
    • Active front steering (AFS)
  • Synchronous motor for simulating the driver torque and the steering wheel position
  • Synchronous motor for simulating the torques that result from the road forces and act on the steering column
  • Operation modes:
    • Blocking
    • Single load
    • Dual load
  • Prepared for virtual test drives thanks to the seamless integration into the ASM Vehicle Dynamics Model
  • Stimulus generators implemented in MATLAB/Simulink for synthetic stimuli
  • Dimensions: 4 m x 1 m x 1.8 m (approx. 9.8 x 3.3 x 7.2 ft)
  • Weight: approx. 1,500 kg (approx. 3,307 lb)
  • Connected load: 15 kW

References:

  • Numerous turn-key projects for OEMs in Europe and North America

Motor Characteristics
Motor Synchronous motor without transmission
Motor encoder HIPERFACE® motor feedback-system
Servo amplifier LTI Servo One
Control strategy torque Forward control (motor current) and superimposed feedback control (torque transducer)
Control strategy position Cascade control with subsidiary speed and torque control
Maximum continuous torque [Nm] 120
Maximum displacement [deg] Unlimited
Maximum speed [rpm] 1200

 

Steady State Control Accuracy
Torque [Nm] ±2 (depends on device under test and torque transducer)
Position [deg] ±0.01

 

Torque Sensor Characteristics
Measurement range [Nm] ±200
Accuracy [Nm] ±1

Motor Characteristics
Motor Synchronous motor without transmission
Motor Encoder HIPERFACE® Motorfeedback-System
Servo amplifier LTI Servo One
Control strategy torque Forward control (motor current)
Control strategy position Cascade control with subsidiary speed and torque control
Maximum continuous torque [Nm] 11
Maximum displacement [deg] Unlimited
Maximum speed [rpm] 3000

 

Steady State Control Accuracy
Torque [Nm] ±0.5 (Depends on device under test and torque transducer)
Position [deg] ±0.01

 

Torque Sensor Characteristics
Measurement range [Nm] ±50 ±10
Accuracy [Nm] ±0.25 ±0.05

Further Information