Multiactuator Problem

Other Hardware Robotics
1

Hi there.

I'm using two custom made linear actuators as part of some microrobot research I'm doing for my summer internship. They're part of a micro-robot called sAFAM, and they move by applying a voltage which, in theory, moves each actuator independently. See the following video:

sAFAM Microrobot

The right actuator moves when voltage is applied to CH1. The problem is, as can be seen in the video, both actuators move when voltage is applied to CH0. This should not happen, only the bottom actuator should move. I've been told both actuators share a common ground, which I have a hunch is why this is happening. I've tried disconnecting CH1 when actuating CH0, which seems to solve the problem.

sAFAM
sAFAM2446×3260 1 MB

Any guesses as to what may be causing this? This problem has stumped the two PhDs who are working on this problem with me, so there are some major brownie flex points if your two cents end up helping fix the problem.

Thank you so much in advance for any help you have to offer!

2

Have you asked the maker of the custom units?
Paul

3

Posting a schematic would help use solve your problem. Frizzy pictures are not much help but links to technical info on the hardware devices helps all of us a lot.

4

Contacted manufacturer: Ended up being a pin-out problem with the cable that plugged into the control box.

5

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