Our servo drives are creating crazy micro-jitter that’s blinding our optical sensors. Any fixes?
Hi everybody. dealing with a super frustrating issue on a high precision inspection rig we just deployed. On the bench everything looked perfect but in the field, our high res optical and laser distance sensors are throwing erratic readings and random noise spikes.
We hooked up an accelerometer to trace it and realized the problem isn't electrical EMI, but it’s purely mechanical vibration. The compact drives we went with are introducing tiny, high-frequency micro-jitter right at the motor shafts. The vibration amplitude is incredibly small but it’s hitting the exact natural frequency of our sensor mounts and messing up our data.
We tried rubber dampeners and software averaging on the sensor side, but it just adds way too much latency.
Has anyone managed to kill this kind of microjitter directly inside the drive firmware? Do we need to swap out our hardware for something with better current loop sampling and native notch filtering or is this just something you have to live with when using ultra small servo setups?