The road noise performance of passenger vehicles has become a key factor with the electrification of automobiles (EVs). To enable large-input excitation tests from the tire contact patch for evaluating road noise, ESTECH has introduced a hydraulic excitation system.
This system ensures versatility by employing a compact exciter head. By changing the rigs used with the exciter head and the installation method, it can be used not only for road noise tests but also for measuring the dynamic characteristics of rubber parts, and for static deformation tests to evaluate vehicle-body hysteresis characteristics.
Specifications
- Static Force
- 2000 lb (8900 N)
- Dynamic Force
- 2000 lb (8900 N)
- Stroke
- 2.0 inch (50 mm = +-25 mm)
- Frequency
- 1-1000 Hz
Actuation variations
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1.Sine waves
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Single-frequency excitation
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Sweep excitation (in-phase, out-of-phase, arbitrary phase control)
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Displacement and acceleration control (excitation amplitude can be set for each frequency)
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2.Random waves
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Arbitrary PSD waveform creation available
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3.Combined waves
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Sine-on-sine (superimpose sine waves of other frequencies onto a single waveform)
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Sine-on-random (superimpose random waves onto a single waveform)
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Random-on-random
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4.Waveform reproduction (time-domain / frequency-domain)
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Example: reproduce on a test rig based on data from actual vehicle driving
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