MTS Series 793 - Manual (Page 458)

About Acceleration Compensation
Acceleration compensation is an option that is typically used in test that:
• Have a moving force transducer
• Apply loads at high frequencies
• Apply loads using massive grips or fixturing
• Use a load washer for feedback
Note:
Acceleration compensation must be optimized whenever you change fixturing or make other major
mechanical changes.
The acceleration compensation applied to force input signals minimizes unwanted feedback from motion
caused by a mass attached to the force transducer. The unwanted effects of this motion increase exponentially
as the test frequency increases.
The acceleration compensation option requires an accelerometer mounted to the load cell and additional
conditioning hardware. During a typical operation, the conditioned accelerometer signal is inverted and
summed with the feedback signal to null out any motion-induced load feedback.
How to Configure Acceleration Compensation
Acceleration compensation must be optimized whenever you change fixturing or make other major mechanical
changes.
1. Remove any installed specimen.
2. In the Station Manager window’s Toolbar, select an access Level of Tuning.
3. In the Station Manager window’s Display menu, click Station Setup to display the Station Setup window.
4. In the Station Setup window’s Navigation pane, locate and click the Channels control mode that will use
acceleration compensation.
5.
In the Station Setup window, click .
6. In the Inputs panel, click the Accel tab.
7.
In the Station Manager window’s Toolbar, click ..
8. Set up the Scope window to display the command and force feedback signals for the channel using
acceleration compensation.
458 MTS Series 793 Control Software
Acceleration Compensation