An Optoelectronic Detector with High Precision for Compact Grating Encoder Application

Mu, Yusong; Hou, Nanjian; Wang, Chao; Zhao, Yao; Chen, Kaixin; Chi, Yin

doi:10.3390/electronics11213486

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…In order to realize the miniaturization of the encoder, an array charge-coupled device (CCD) is used to read the signal [ 16 , 17 ]. The introduction of an image sensor CCD increases the complexity of the light source and signal extraction, the resolution and accuracy of the measurement are more dependent on the quality of subsequent processing algorithms, and the complexity of the algorithms determines the response speed of the measurement device, ultimately restricting the maximum speed of the measured shaft [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

A 19-Bit Small Absolute Matrix Encoder

Geng,

Cao,

Shang

et al. 2024

Sensors

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With the application of encoders in artificial intelligence and aerospace, the demand for the miniaturization and high measurement accuracy of encoders is increasing. To solve this problem, a new absolute matrix encoder is proposed in this paper, which can realize 19-bit matrix coding by engraving two circles of matrix code, and has the advantages of fewer circles of code disk engraving and higher measurement accuracy. This article mainly focuses on the design of a new matrix code disk, encoding and decoding methods, decoding circuit design, Matlab simulation analysis, and experimental error analysis. The experimental results show that the encoder designed in this paper achieves ultra-small volume Φ30 mm × 20 mm, and the angle measurement accuracy is 2.57”.

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Section: Introductionmentioning

confidence: 99%

A 19-Bit Small Absolute Matrix Encoder

Geng,

Cao,

Shang

et al. 2024

Sensors

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“…The light information emitted by the light source is modulated by the code disk, recorded by photosensitive elements, and converted into electrical signals. Then, it is decoded into position information through a decoding circuit to achieve angular position measurement [4][5][6]. Therefore, the code disk is the core component of the photoelectric encoder; it determines the encoding and decoding algorithms of the photoelectric encoder, as well as the performance of the encoder [7].…”

Section: Introductionmentioning

confidence: 99%

Absolute Photoelectric Encoder Based on Position-Sensitive Detector Sensor

Geng,

Cao,

Shang

et al. 2024

Electronics

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In response to the engineering, miniaturization, and high measurement accuracy requirements of encoders, this paper proposes a new type of absolute photoelectric encoder based on a position-sensitive detector (PSD). It breaks the traditional encoder’s code track design and adopts a continuous and transparent code track design, which has the advantages of small volume, high angle measurement accuracy, and easy engineering. The research content of this article mainly includes the design of a new code disk, decoding circuit, linear light source, and calibration method. The experimental results show that the encoder designed in this article has achieved miniaturization, simple installation and adjustment, and easy engineering. The volume of the encoder is Φ50 mm × 30 mm; after calibration, the resolution is better than 18 bits, and the accuracy reaches 5.4″, which further demonstrates the feasibility of the encoder’s encoding and decoding scheme.

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“…Some constructions of the electric circuits are commonly used in different types of applications [1][2][3][4][5][6]. For example, an electric circuit comprising only resistors and a capacitor, called an RC circuit for short, is used in a wide variety of applications.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Analysis of an RL Circuit Transient Response under Inductor Failure Conditions

et al. 2022

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We apply probability theory for the analysis of the exponentially decaying transient response of a resistor inductor electric circuit with partially known value of the inductance due to its failure. The inductance is known to be within a continuous interval, and the exact value is unknown, which may happen as a result of inductor faults due to a variety of factors—for example, when the circuit is deployed in an unusually harsh environment. We consider the inductance as a continuous uniform random variable for our analysis, and the transient voltage is treated as a derived random variable which is a function of the inductance random variable. Using this approach, a probability model of the transient voltage at the output terminals of the circuit is derived in terms of its cumulative distribution function and the probability density function. In our work, we further elaborate that the probability model of any other circuit parameter can also be obtained in a similar manner, or it can be derived from the transient voltage probability model. This is demonstrated by getting the model of a branch current from the probability distribution of the transient voltage. Usage of the probability model is demonstrated with the help of examples. The probability of the transient voltage falling in a certain interval at a given instant of time is evaluated. Similarly, the probability values of the branch current in different intervals are determined and analyzed. The derived probability model is checked for its validity and correctness as well. The model is found to be useful for probabilistic analysis of the circuit.

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An Optoelectronic Detector with High Precision for Compact Grating Encoder Application

Cited by 5 publications

References 26 publications

A 19-Bit Small Absolute Matrix Encoder

A 19-Bit Small Absolute Matrix Encoder

Absolute Photoelectric Encoder Based on Position-Sensitive Detector Sensor

Probabilistic Analysis of an RL Circuit Transient Response under Inductor Failure Conditions

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