Encoders

Encoders or rotation angle sensors represent a group of devices designed to convert a measured process parameter into an electrical signal.

 

Encoders are designed to measure the angle of rotation of various rotating objects and system elements, which allows you to measure and control the process of rotation and movement of objects over time.

 

Scope of application of encoders in industry

 

Rotary angle sensors are indispensable in modern industry. Industrial systems, as a rule, include a wide variety of encoders that allow you to control the operation of machines, instruments, equipment and solve a huge number of different tasks:

Due to the wide variety of existing encoder models and their compatibility with many types of industrial equipment, rotation angle sensors can be used in various industries:

The given examples do not limit the possibilities of using rotation angle sensors; modern encoders are widely used in many other industrial fields.

 

 

Types of rotation angle sensors: differences between absolute and accumulative encoders

 

The main division of encoders is made according to the general principle of obtaining information into absolute (positional) and accumulating (incremental) devices.

 

Incremental encoders are pulse devices that transmit information about the current position of an object in the form of pulses. The rotation angle is determined depending on the number of pulses transmitted to the counter. Due to the design features and operating principle of incremental encoders, for correct measurement it is necessary to bind the sensor to the reference system using special zero marks, and also to return the equipment to its original position when the sensor is disconnected.

Absolute encoders have a more complex structure and a more complex signal processing process, but at the same time they have significantly wider application possibilities. At the output, absolute encoders provide direct information about the current rotation angle without the need for additional interpretation using a pulse counter. In this case, the absolute rotation angle sensor does not need to be referenced to zero marks and determines the position of the shaft immediately after turning on the equipment. Thanks to this, position encoders are more accurate and can be used in areas critical to quickly and accurately measuring the current position of an object.