Question 1: What does an encoder do? An encoder is a device that compiles and converts signals or data into signal forms that can be used for communication, transmission and storage.

The encoder converts angular displacement or linear displacement into electrical signals, the former is called code wheel, and the latter is called code wheel. According to the top reading mode, encoders can be divided into contact type and non-contact type. The contact type is output by a brush, and the brush contacts the conductive area or the insulating area to indicate whether the code state is 1 "or 0". The non-contact receiving sensitive element is a photosensitive element or a magnetic sensitive element. When the photosensitive element is used, the light-transmissive region and the light-opaque region are used to indicate whether the encoding state is 1 "or 0". Through the binary coding of 1 "and 0", the collected physical signals are converted into electrical signals readable by machine code for communication, transmission and storage.

Encoder function: used for speed, position and detection feedback. For example:

Spindle encoder: Feedback the actual speed of the spindle, mainly used for thread processing.

Encoder on the motor: It is a feedback unit to check how many pulses the motor has executed, so as to achieve the function of accurate positioning. Principle: baike.baidu/view/332544.

Question 2: What is the number of lines in the encoder? The number of lines is the resolution of the encoder, that is, the number of pulses emitted in one rotation. The encoder has no frequency doubling technology, and the receiver realizes the frequency doubling technology through the phase difference relationship of the encoder output pulse (phase A and phase B) when processing the pulse.

Question 3: What is the encoder for? Encoders are used to measure physical quantities such as speed, position, speed or angle. It is a sensor that converts mechanical displacement into electrical signal, which is divided into incremental type and absolute value type. Incremental encoders generate pulse signals, and the speed, length or position can be measured by the number of pulses. For absolute encoders, each position is a digital value of the displacement. There is a rotating disk (code disk) inside the encoder, and there are several transparent and opaque windows. The photoelectric receiver collects intermittent light beams. In this way, the light pulse is converted into electric pulse, which is then processed and output by the electronic output circuit.

Question 4: What are the types of encoders and what are the differences? Incremental rotary encoder and absolute rotary encoder

Incremental rotary encoder

Incremental encoders provide a certain number of pulses for each rotation of the shaft.

The moving speed can be measured by periodic measurement or pulse counting per unit time.

If the number of pulses is accumulated after the reference point, the calculated value represents a parameter of rotation angle or stroke. The difference between the output pulses of the dual-channel encoder is 90o. The electronic equipment receiving the pulse can receive the rotation induction signal of the shaft, so it can be used to realize bidirectional positioning control; In addition, the three-channel incremental rotary encoder generates a pulse called zero signal every revolution.

Incremental absolute value rotary encoder

The absolute encoder provides a unique coded digital value for the position of each axis.

Especially in the application of positioning control, the absolute encoder reduces the calculation task of electronic receiving equipment, thus eliminating complex and expensive input equipment; In addition, when the machine is powered on or off, the current position value can be used without returning to the position reference point.

The single-turn absolute encoder subdivides the shaft into a specified number of measuring steps, and the maximum resolution is 13 bits, which means that it can distinguish 8 192 positions at most. Multi-turn absolute encoder can not only measure the angular displacement in one turn, but fortunately J uses multi-step to measure the number of turns. The number of turns of multiple turns is 12 bits, which means that at most 4096 turns can be identified. The total resolution can reach 25 bits or 33,554,432 measurement steps. The parallel absolute value rotary encoder transmits the position value to the estimation electronics through a plurality of parallel cables.

Assuming serial absolute encoder, the output data can be transmitted through standard interface and standardized protocol. At the same time, serial data transmission was realized by point-to-point connection in the past: now more and more fieldbus systems are used.

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Question 5: What is the function of the encoder? The encoder sends pulses. For example, the encoder can connect the encoder with the motor, and the motor can turn as many times as it turns. Finally, it sends this pulse number to the frequency converter, which can be used for closed-loop control. For example, if the frequency converter turns the motor to 2000 rpm, the encoder will give the frequency converter the number of pulses corresponding to 2000 rpm, and the frequency converter will know how many rpm it has turned, so it can make some fine adjustments to make the output speed more accurate. Encoders are generally used as feedback detection components, and you can also find better answers through technical training.

Question 6: What is an audio encoder that encodes and decodes sound files? ITunes has a built-in audio decoder, which can encode, decode and play common sound files (mp3, wma, wav, aac), and synchronously input them into the connected iPod player.

Question 7: What is the resolution of the encoder? 5 points refers to the resolution and decomposition energy.

For an incremental encoder, it refers to the number of pulses output per revolution.

For absolute encoders, it refers to the number of bits that can be output per turn.

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If you are satisfied with the above answers, please adopt them in time. Thank you.

Question 8: What is an encoder? What is it used for? Encoders are used to measure physical quantities, such as length, position, speed or angle. It is a kind of sensor that converts mechanical displacement into electrical signal, which can be divided into incremental and absolute types.

All encoders in Apud are different from other systems, and the military is equipped with anti-fatigue and temperature compensation. Fully meet the relevant standards, and after comprehensive testing, meet the requirements of CE.

Question 9: What is the meaning of P/R in the encoder? P/R

Plus sign/circle

For example, 2 to the power of 16 is an encoder with 16 bits.

This week is 6553 pulses.

Generally written as 65536P/R

Question 10: What does the priority encoder mean? Priority encoder means allowing several inputs to have input signals at the same time. According to the priority order of input signals, the encoder only encodes the signal with the highest priority among several input signals at the same time.