A mechanical encoder is a common position sensor that typically consists of components such as a rotary encoder disc and a photoelectric sensor. Mechanical encoders have the following advantages and disadvantages:
Merit:
High precision: Mechanical encoders can achieve high position detection accuracy, often reaching an accuracy of one hundredth or more.
High reliability: The mechanical encoder has a simple structure, is stable and reliable, is not susceptible to external interference and damage, and is suitable for working in harsh environments.
Low cost: Mechanical encoders are relatively inexpensive to manufacture and inexpensive, making them suitable for large-scale applications.
Stable signal output: The output signal of the mechanical encoder is stable and will not cause errors due to electromagnetic interference and other reasons.
Shortcoming:
Short life: Mechanical encoders have a relatively short service life, are prone to wear and failure, and require regular maintenance and replacement.
Speed limit: Mechanical encoders have relatively low speed limits and cannot meet the needs of high-speed motion control.
High installation requirements: The installation requirements of mechanical encoders are high, and parameters such as concentricity and parallelism between the rotating shaft and the coding disk need to be guaranteed.
Not suitable for contactless applications: Mechanical encoders require direct contact with the axis of rotation and are not suitable for contact-sensitive applications such as high-speed motion, high temperatures, etc.