From 85a8f2fe8c48adbb5e9a578e4d5009f813d9d963 Mon Sep 17 00:00:00 2001
From: Sam Calisch <sam.calisch@cba.mit.edu>
Date: Tue, 10 Oct 2017 11:44:15 -0400
Subject: [PATCH] Update README.md

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 9b74c9f..f6c5e3f 100644
--- a/README.md
+++ b/README.md
@@ -127,4 +127,5 @@ Next task is designing the AS5013 board and its connection to the main board on
 I've also been looking at a similar mechanism for a non-contact torque cell.  Most such torque measurement devices use a slip ring or radio telemetry to transmit the measured values to the stationary frame.  We can design a flexure (similar to a helical shaft coupling) with a portion that translates in the axial direction when subjected to torque.  Depending on requirements, we can dial up and down the stiffness and range.  We can mount an axially magnetized ring magnet (or better yet, an opposite pair of ring magnets) and measure the axial displacement using a pair of differential hall elements in the stationary frame.  This allows us to subtract out small deviations in the gap between the magnet and sensor.  Below are some quick simulations of a candidate flexure geometry:
 
 <img src='torque-cell/tc-sim.mp4' width=300px>
+<img src='torque-cell/tc-test-small.mp4' width=300px>
 
-- 
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