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Compact Steering Test Bench with Spindle Actuator

This compact test system lets developers insert real forces and torques so they can install and test the entire steering mechanics. These systems are typically used for software integration tests, software release tests, and testing realistic driving maneuvers that require average dynamics.

Features:

  • Compact steering test bench for electromechanical power steering
    • Servomotor on the steering column (C-EPS)
    • Servomotor on the steering box (R-EPS)
  • Synchronous motor for simulating the driver torque and the steering wheel position
  • Synchronous motor with recirculating ball screw for simulating the road forces acting on the tie rods
  • 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: 3 m x 1 m x 2.2 m (approx. 9.8 x 3.3 x 7.2 ft)
  • Weight: approx. 900 kg (approx. 1,984 lb)
  • Connected load: 18 kW

References:

  • Various turn-key projects for OEMs in Europe, North America, and Asia

Steering robot: 50 Nm motor with special winding

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)
Control strategy position Cascade control with subsidiary speed and torque control
Maximum continuous torque [Nm] 50
Maximum displacement [deg] Unlimited
Maximum speed [rpm] 500

 

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
Accuracy [Nm] ±0.25

Steering robot: 27 Nm motor with standard winding

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) or superimposed feedback control (torque transducer)
Control strategy position Cascade control with subsidiary speed and torque control
Maximum torque [Nm] 27
Maximum displacement [deg] unlimited
Maximum velocity [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
Accuracy [Nm] ±0.25

Rack actuator: recirculating ballscrew transmission

Motor Characteristics
Motor Synchronous motor with recirculating ballscrew transmission
Motor encoder HIPERFACE® motor feedback system
Servo amplifier LTI Servo One
Control strategy force Superimposed feedback control (force transducer and disturbance variable compensation)
Control strategy position Cascade control with subsidiary speed and force control
Maximum force [N] 20000
Maximal displacement [m] ±150e-3
Maximal velocity [m/s] ±400e-3

 

Steady State Control Accuracy
Force [N] ±100 (depends on device under test and force transducer)
Position [m] ±0.2e-3

 

Force Sensor Characteristics
Measurement range [N] ±20000
Accuracy [N] 20

Further Information