Tuned indexer stall detection and controller.

Change-Id: I93332461253457730b3051c3e96735b314f1405d
diff --git a/y2017/control_loops/superstructure/superstructure.q b/y2017/control_loops/superstructure/superstructure.q
index b4e6c9b..427dadb 100644
--- a/y2017/control_loops/superstructure/superstructure.q
+++ b/y2017/control_loops/superstructure/superstructure.q
@@ -69,7 +69,7 @@
 
   // True if the indexer is stuck.
   bool stuck;
-  float stuck_ratio;
+  float stuck_voltage;
 
   // The state of the indexer state machine.
   int32_t state;