DP11H2020A15P

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Encoders

Encoders are devices that are used to measure displacements, positions, and speeds. They are used in many applications, including consumer electronics, robotics, industrial automation, automotive, aerospace, and medical applications. This article will focus on the DP11H2020A15P application field and working principle.

The DP11H2020A15P is a high resolution sinusoidal and incremental optical encoder. It is designed for rotary and linear motion applications such as medical inspection systems, day-to-day industrial automation and robotics. It is capable of up to 8192 pulses per revolution (PPR) and its linear resolution is up to 0.75µm. It has quadrature and index outputs that provide information about the position and direction of the part being moved.

The DP11H2020A15P uses a sinusoidal waveform to generate output signals which is formed by two symmetrical sine waves with a phase difference of 90 degrees. The dual signal outputs from the optical encoder are measured by a comparator/detector circuit. This generates a stream of pulses which are in quadrature, meaning the signal output by one channel leads that of the other by a fixed phase shift of 90 degrees. This continuous two-phase stream of pulses provides precise information of of the absolute position and instantaneous angular velocity of the shaft.

The two output signals that the DP11H2020A15P produces are known as A-Phase and B-Phase. The A-Phase signal is the main signal output and is the one that indicates direction while the B-Phase signal is the tertiary signal and is used for synchronization. Another output that the encoder provides is the index signal which is generated when the two output signals traverse a predetermined position in the track. The index signal can be used to reset the encoder\'s position data and identify specific positions or as a marker during system operation.

The DP11H2020A15P encoder has an integrated high-performance signal detector which increases the signal-to-noise ratio and detects errors in the signal. It also features an automatic power-saving mode that allows the encoder to remain in a low-power state when idle, resulting in improved power efficiency. The encoder has an anti-vibration design to prevent positioning errors caused by vibration and shock during operation.

The DP11H2020A15P is a high-performance, durable encoder suitable for applications such as medical inspection systems, industrial automation and robotics. Its high resolution, dual output signals, integrated high-performance signal detector, automatic power-saving mode and anti-vibration design make it an ideal choice for these applications.

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