By using our patented High Power Shaker in test bench construction for Squeak and Rattle analyzes, disturbing noises can be detected and eliminated in good time.

The use of accelerometers mounted on the bodywork via magnets means all movements of the vehicle can be recorded and, hence, a so-called 'Drive File' generated during a real test drive over the defined rough stretch of road. The use of HPS now makes it possible to induce the excitation recorded on the test track into the vehicle under laboratory conditions. The accuracy of the road profile simulation here is almost 100%. The advantage of the simulation is that there are no distracting secondary effects such as wind, engine or rolling noises. A further advantage is the exact reproducibility of the journey - as often as you like. This means all relevant disruptive noises can be detected and appropriate preventive measures taken in good time ahead of the start of series production.

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Shaker system for the analysis of vehicles

The vehicles are agitated on this shaker system by two or four high power shakers in the vertical direction with time-history, random or synthetic signals. We recommend the variant with 4 actuators because the roadway simulations are even more realistic here.

System description

• Steel base plates as the basis of the system and for positioning the lifting systems and shakers
• Electric or Electro-hydraulic lifting system for positioning the vehicle
• 2 or4 HPS 350 high power shakers with electromagnetic locating and manual/hydraulic docking system
• 11 kN excitation power per actuator in a compact and lightweight design
• Actuator diameter 260 mm; Height 200 mm and only 30 kg weight
• Realistic noise analysis for vehicles up to 3.5 tons
• Switch cabinet with shaker controller
• PC system for control and analysis
• Sensor system and mounting device for drive file recording
• Software with data logger and sensor system for disruptive noise recording and analysis