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We all know that a small rotary encoder role in it? Today, Granville electronic'll tell rotary encoder principle, so that we understand the role of the rotary encoder.

     The rotary encoder is used to measure rotational speed and with PWM technology can achieve fast speed device, and measure the speed of the object is a motor. The rotary encoder is a light mechanical and electrical technology in one of the speed of displacement sensor. After making the rotary encoder motor speed measuring rotary encoder to put the appropriate value by digital feedback table, we can see directly through the rotary screen digital encoder feedback, to know the real-time speed of the motor in the end is how much.
　　Use the rotary encoder can help us to know how much value the motor speed. As we all know, the motor speed is to be controlled within a certain range, too bad, too little is not good. So, how do we understand the motor speed? At no time before the rotary encoder this is an impossible thing, but there is a rotary encoder of this product later, who want to know the motor speed is a very easy thing !
　　Rotary encoders divided into two categories: one is an incremental encoder, the other is the absolute pulse encoder. Usually incremental encoder, the displacement of the object is converted into a periodic electric signal, and then converts this into an electrical signal pulse count. The pulse count is to represent the magnitude of the displacement, if it is used to measure the motor, so that it represents the size of the motor speed. And absolutely pulse encoder also measure the size of displacement, but its value and how the process occurs without any relationship.
　　What is the role of the rotary encoder is it? In addition to the rotary encoder can be used to measure the speed of displacement of the body as well as outside, and counting function. When an object using a rotary encoder, if the encoder is stopped or power, and this time can remember the location of the encoder according to the memory inside. Of course, in this process, the rotary encoder after a power failure can not be any movement when the rotary encoder can be started when there is no interference pulse occurs, otherwise the resulting position is biased. However, the size of this bias is not able to say the measurement can be measured. Thus, using the rotary encoder must pay attention to the issues mentioned above.
　　Rotary encoder these purposes it is enough to have a number of industry foothold. Even in physics lab also indispensable to use rotary encoder velocity displacement measurements. Volume rotary encoder is small, light weight, variety, full-featured and high resolution characteristics make it has more advantages in the future years.
　　Now we know the role of the rotary encoder little big now!