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actuators:erm [2022/03/21 21:01] – [Types of ERMs] jonathan.lane-smithactuators:erm [2022/04/07 15:56] (current) – [Advantages & Disadvantages] jonathan.lane-smith
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 ERM motors are fairly simple, reliable, and affordable, making them popular choices for haptic displays. The actual motor of an ERM motor is a DC motor, which makes it very easy to connect ERM motors to microcontrollers such as Arduinos. ERM motors are fairly simple, reliable, and affordable, making them popular choices for haptic displays. The actual motor of an ERM motor is a DC motor, which makes it very easy to connect ERM motors to microcontrollers such as Arduinos.
  
-The biggest disadvantage of ERM motors is that the frequency and amplitude are linked together. If the motor is spinning slowly, it will have a low frequency and amplitude, and if the motor is spinning quickly, it will have a high frequency and amplitude. For applications in which it is important for the frequency and amplitude to be independently set, ERM motors are not suitable choices. +One main disadvantage of ERM motors is that the frequency and amplitude are linked together. If the motor is spinning slowly, it will have a low frequency and amplitude, and if the motor is spinning quickly, it will have a high frequency and amplitude. For applications in which it is important for the frequency and amplitude to be independently set, ERM motors are not suitable choices.  
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 +Another disadvantage of ERM motors is that because they use DC motors, their response time is fairly high. This means that they may not be suitable for applications in which they vibrate with accompanying audio.
  
 ===== ERM Examples ===== ===== ERM Examples =====