add actuator suppliers

actuators-sensors/index.org

@@ -36,6 +36,7 @@
 - http://www.sercel.com/products/Pages/seismometers.aspx
 
 ** Force Sensors
+** Strain Gauge
 ** Interferometers
 *** Suppliers
 - http://www.attocube.com/
@@ -63,8 +64,26 @@ cite:fleming13_review_nanom_resol_posit_sensor
 - https://www.electromate.com/
 - https://www.magneticinnovations.com/
 
+** Shaker
+*** Suppliers
+- https://www.bksv.com/en/products/shakers-and-exciters
+- https://vibrationresearch.com/shakers/
+- https://www.sentekdynamics.com/
+
+https://www.bksv.com/en/products/shakers-and-exciters/LDS-shaker-systems/permanent-magnet-shakers/V201
+** Brushless DC Motor
+cite:yedamale03_brush_dc_bldc_motor_fundam
+https://www.electricaltechnology.org/2016/05/bldc-brushless-dc-motor-construction-working-principle.html
+
 * Positioning Stages
+** Hexapods
+- https://www.alioindustries.com/
+
+** Translation/Rotation Stage
+- https://www.attocube.com/en/products/nanopositioners
+- https://www.physikinstrumente.com/en/
 - https://www.aerotech.com/
+- https://www.etel.ch/
 
 * Amplifiers
 ** Current Amplifiers