(July.2.2020, Suzhou) Together with three CDL students, we visited two local factories producing vibrators. As the vibration system (8000 N force, sufficient to drive an adult of 80kg up to 10 times the gravitational acceleration) we are aiming for is a “small” system for them (not for us, of course), it is lucky for us to be able to go there and do some simple tests. It turns out that the vibration lab needs to be reconfigured to fit for the system, and vibration system, a few months’ work ahead. In addition, further design on the force transmission system is needed to ensure purely vertical vibrations against gravity.

(Left: Air ventilation needed to cool down the coil. Right: DKU students mounting the IMU sensor for the test)