Touch gets hang in noisy environment.

I am using beaglebone black board with ubuntu-14.04.2-console-armhf-2015-02-19ubuntu-14.04.2-console-armhf-2015-02-19 on SD-card. I have LCD4 Cape (4.3" LCD). Everything is working fine including touch.
I want to use this complete system in noisy environment like with an AC motor. So I am testing this with chattering test. During chattering test touch gets hang within a couple of minutes. Other system is working fine except touch. After reboot again touch starts working but again gets hang within couple of minutes. I am unable to find out whether this is hardware issue or software issue.
Please help me to solve this problem.
Thanking you.