The principle feature of incremental encoder ！

The rotary encoder is a light mechanical and electrical technology in one of the speed of displacement sensor. When the rotary encoder grating disk drive shaft rotates, the light emitted by the light emitting element is the grating disk slot cut into intermittent light receiving element and generate an initial signal. The signal processing circuit after subsequent output pulse or code signal. It features small size, light weight, variety, full-featured, high frequency response, high resolving power, torque is small, low power consumption, stable performance, reliability and long service life.

Incremental encoder

When the incremental encoder shaft rotates, there is a corresponding phase output. Discrimination and increase or decrease the number of pulses of the rotational direction, to the rear of the circuit requires the use of judgment and counter. The count starting point can be set, and can achieve unlimited accumulation and measurement of multi-turn. It can also be issued per revolution a pulse signal Z as a reference mechanical zero position. When the pulse is fixed, while the need to improve resolution, using a band 90 degrees out of phase A, B of the two signals, the original number of pulses multiplier.

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