The development history of the encoder

The earliest encoder on the market basically is rotating transformer.

Rotating transformer (resolver/transformer) is a kind of magnetic sensor, also known as synchronous resolver. It is a small Angle measured in ac motor, used to measure the rotation shaft angular displacement and angular velocity of the object, composed of stator and rotor. The stator winding as the primary side of transformer, accept the excitation voltage, excitation frequency, usually with 400, 3000 and 5000 hz. Rotor winding as vice side of transformer, the induced voltage is obtained by electromagnetic coupling.

Rotating transformer can work in some more harsh environmental conditions, such as sensitive to electromagnetic interference and decoding complexity used to slow down, for sure, but today, still has its unique value, such as a hybrid car speed feedback, has its irreplaceability.

Rotating transformer with more brands on the market now is more than the sichuan and rotating transformer.

Incremental encoder, dosage of type is now in the market most can be used to measure Angle, displacement, speed.

Incremental encoder is converting displacement into periodic signal, and then convert the electrical signals into count pulse, with the size of the displacement of the number of pulse said.

Collector output output way of incremental encoder, the output voltage, output line driver output (difference), complementary output (push-pull output).

Shaft type can be divided into real axis and the hollow shaft to meet the different needs of customers different occasions.

Incremental encoder brand is numerous, mainly used in printing machinery, shoes machine, ceramic machinery, glass machinery, printing machine, injection molding machinery, elevator, CNC machine, computer embroidery machine, embroidery machine, textile machinery, packaging machinery, carton machine, oiling machine, automatic equipment, cutting machines, knitting machinery large machinery production line automation control domain.

The incremental encoder with more on the market at present is in control, koyo, omron, pepperl + fuchs, the sichuan, appropriate division, fort union, figure, etc.

Currently the dosage of the absolute encoder in the market is not small, absolute value encoder relative to the price of the incremental encoder is higher, is mainly used to measure displacement.

Absolute encoder type of each location corresponding to a certain numerical code, so it's only with the measurement value for start and stop position, and has nothing to do with the measurement in the middle of the process.

Absolute encoder type printing machinery, shoes machine, ceramic machinery, glass machinery, printing machine, injection molding machinery, elevator, numerical control machine, computer embroidery machine, embroidery machine, textile machinery, packaging machinery, carton machinery, oiling machine, automatic equipment, cutting machines, knitting machinery large machinery production line automation control domain.