Optical position sensor based on a digital wavelength-encoding grating ruler

Wang, Yu; Chen, Huoyao; Liu, Zhengkun; Ye, Hong

doi:10.1117/1.oe.55.10.107103

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…[1] In order to ensure product quality, mechanical motion of motion platforms requires accurate feedback on motion parameters from motion sensors. [2] In the past, with the high-speed development of photoelectric, magnetoelectric, capacitive, resistive, and other motion sensors, the main methods of the detection of circular motion have been the grating scale, [3,4] magnetic scale, [5] and hall sensor. [6] The research of the motion sensors, especially the linear motion sensor, has been very mature, but for a circular motion sensor, the existing technologies still face different limitations, including the low structure integration, high cost and complexity, and strict environmental requirements.Recently, the triboelectric nanogenerator (TENG) proposed by Wang and his team has provided a new solution for circular motion sensing, which is based on Maxwell's displacement current theory.…”

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confidence: 99%

Sliding Triboelectric Circular Motion Sensor with Real‐Time Hardware Processing

Xie

Zeng

Yang

et al. 2021

Adv Materials Technologies

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Since circular motion becomes an important part of automated circulation equipment, a sliding triboelectric circular motion sensor (S‐TCMS) has been demonstrated to monitor the velocity and displacement of a circular motion. The S‐TCMS consists of the stator and slider, which is integrated with automated circular motion equipment for sensing applications. When the slider of PTFE grid slides between the stator's electrodes, four electrical signals are produced in the staggered electrode. The experimental results show that the voltage amplitude remains constant at different sliding velocities, showing good sensing stability. Also, this work proposes a real‐time hardware signal processing method, which converts the original S‐TCMS signal into two standard square wave signals. The method makes the sensing detection of S‐TCMS independent from electrostatic instrument and reduces the occupation of hardware resources. The sensing experimental results show that S‐TCMS can detect the velocity of circular motion with the maximum velocity deviation rate of less than 0.37%, the angular position sensing detection accuracy of 0.42°. The S‐TCMS shows good circular motion‐sensing characteristics after hardware signal processing.

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Sliding Triboelectric Circular Motion Sensor with Real‐Time Hardware Processing

Xie

Zeng

Yang

et al. 2021

Adv Materials Technologies

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Accelerated life reliability evaluation of grating ruler for CNC machine tools based on competing risk model and incomplete data

Yang

et al. 2021

Int J Adv Manuf Technol

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Grating ruler is the high-precision linear displacement sensor used in the servo control system of CNC machine tools. It is one of the key components affecting the machining accuracy of CNC machine tools. Due to the long life-time of grating ruler, and it will cost a lot of time and resources to evaluate its reliability level by traditional life test. At the same time, there are some incomplete data in the failure data, which will cause inaccurate evaluation results. In this paper, an accelerated life reliability evaluation method of grating ruler based on competing risk model and incomplete data is proposed. Firstly, according to the characteristics of grating ruler, the life distribution model based on competitive risk is established, and the representation method and conversion method of failure data considering incomplete data are proposed.Secondly, the accelerated life test system which can apply temperature and humidity accelerated stress is built, and the reliability level of JFT series closed absolute grating ruler is evaluated by the proposed method. Finally, the proposed method is compared with the single life distribution model to verify the effectiveness.

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An Inductive Sensor for the Angular Displacement Measurement of Large and Hollow Rotary Machinery

Tong

et al. 2023

IEEE Sensors J.

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Optical position sensor based on a digital wavelength-encoding grating ruler

Cited by 4 publications

References 9 publications

Sliding Triboelectric Circular Motion Sensor with Real‐Time Hardware Processing

Sliding Triboelectric Circular Motion Sensor with Real‐Time Hardware Processing

Accelerated life reliability evaluation of grating ruler for CNC machine tools based on competing risk model and incomplete data

An Inductive Sensor for the Angular Displacement Measurement of Large and Hollow Rotary Machinery

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