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actuators:erm [2022/03/18 01:10] – [Projects Using ERMs] jonathan.lane-smithactuators:erm [2022/03/21 20:39] – [Types of ERMs] jonathan.lane-smith
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 There are three main types of ERM motors: Shafted motors, encapsulated cylindrical motors, and shaftless motors. There are three main types of ERM motors: Shafted motors, encapsulated cylindrical motors, and shaftless motors.
  
-Shafted motors are ERM motors for which the eccentric mass is visible. When using shafted motors, it is important to ensure that nothing comes in contact with the eccentric mass while it is spinning. If this does occur, it could result in a large jerk instead of a smooth vibration, in addition to damaging whatever came in contact with the eccentric mass..+Shafted motors are ERM motors for which the eccentric mass is visible. When using shafted motors, it is important to ensure that nothing comes in contact with the eccentric mass while it is spinning. If this does occur, it could result in a large jerk instead of a smooth vibration, in addition to possibly damaging whatever came in contact with the eccentric mass.
  
 Encapsulated cylindrical motors are similar to shafted motors, but they cover the rotating shaft in order to prevent interference of outside objects with the eccentric mass. Encapsulated cylindrical motors are similar to shafted motors, but they cover the rotating shaft in order to prevent interference of outside objects with the eccentric mass.
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-===== External Links and References =====+===== External Links ===== 
 + 
 +The following paper by Choi and Kuchenbecker gives a great overview of vibrotactile displays, how vibrotactile feedback is perceived by humans, more detail into the different vibrotactile technologies, and various applications: 
 S. Choi and K. J. Kuchenbecker, "Vibrotactile Display: Perception, Technology, and Applications," in Proceedings of the IEEE, vol. 101, no. 9, pp. 2093-2104, Sept. 2013, doi: 10.1109/JPROC.2012.2221071. S. Choi and K. J. Kuchenbecker, "Vibrotactile Display: Perception, Technology, and Applications," in Proceedings of the IEEE, vol. 101, no. 9, pp. 2093-2104, Sept. 2013, doi: 10.1109/JPROC.2012.2221071.
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 +To understand more about the theory behind ERM motors and how they work, Precision Microdrives has a great webpage that discusses this in detail:
  
 “AB-004: Understanding ERM vibration motor characteristics,” Precision Microdrives, 01-Feb-2022. [Online]. Available: [[https://www.precisionmicrodrives.com/ab-004]]. [Accessed: 17-Mar-2022].  “AB-004: Understanding ERM vibration motor characteristics,” Precision Microdrives, 01-Feb-2022. [Online]. Available: [[https://www.precisionmicrodrives.com/ab-004]]. [Accessed: 17-Mar-2022]. 
 +
 +===== References =====