Standard controllers apply clipping to the drive output, which reduces the extreme voltage peaks so that it is no longer Gaussian. This method does not restrict motion on the shaker table, which is necessary if an engineer is running a random test near shaker limits.
TruClip™ is a new method of clipping developed by Vibration Research that utilizes closed-loop control to reduce high sigma peaks on the shaker table. This clipping method applies to the control measurement and minimizes the chance of exceeding maximum acceleration, velocity, or displacement limits.