A New Error Model and Compensation Strategy of Angle Encoder in Torsional Characteristic Measurement System

Chen, Bingkui; Peng, Changyan; Huang, Jian

doi:10.3390/s19173772

Cited by 12 publications

(6 citation statements)

References 16 publications

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“…The structure of the instrument is illustrated in figure 3. The driving motor (1), the circular-grating angle encoder (10), the reducer (12) and the center (2) move along the Y-axis together with the slide guide (11). Moreover, the dead center (7) can move along the Y-axis.…”

Section: Instrument Structural Design and Measurement Principlesmentioning

confidence: 99%

“…As compared with the single-reading-head method [13] or the multiple-reading-head method [11,15], the abovementioned method does not require the addition of any reading head, while it eliminates the installation step. Multibody systems theory [12] cannot detect the eccentricity of the shaft system, but the method presented in this paper can determine the eccentricity of the system. A visual system and imageprocessing technology [14] were employed to detect eccentricity, but another set of machine vision systems was required, and the structure of the instrument was subject to certain requirements.…”

Section: Introductionmentioning

confidence: 99%

“…Given the relationship between angular error and eccentric parameters, Chu et al deduced a compensation model for angular error and proposed a method for detecting grating eccentricity and eccentric direction using a double reading head [11]. Chen et al developed an error model using multibody systems theory for angular measurements with geometric errors made by a torsional-characteristic-measurement system, as an attempt to delve into the impact of geometric errors on angular measurement and remedy measurement errors [12]. Instead of using multiple reading heads to eliminate eccentricity errors, Yu et al proposed a calibration experiment-based compensation algorithm method with a single reading head to measure angular position in a low-cost and high-accuracy manner [13].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study of a measurement system and a method for determining the distance between the grooves of a hydraulic valve

Huang¹,

Long²,

Gan³

et al. 2021

Meas. Sci. Technol.

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Hydraulic valves are critical control components of hydraulic systems. To ensure hydraulic control systems are accurate, the distance between the grooves of hydraulic valves should be measured. This distance critically impacts how much oil is fed. In previous measurements, a coordinate-measuring machine or a universal tool microscope were applied. However, these two methods exhibited low measuring precision in terms of center eccentricity, incorrect initial position, boresight error, etc. In the present study, a high-precision non-contact automatic instrument is developed that solves chord length and uses a machine-vision technique to determine distance. Besides, an angle-compensation method is proposed to remedy the boresight error attributed to motion control in a closed-loop system. Moreover, an eccentricity-correction method is put forward to correct the angular error attributed to the eccentricity of the measurement system, enhancing measurement precision. As revealed by the experimental results, the maximum limit error of a single measurement is less than 3.3 μ m , verifying the feasibility of the novel instrument.

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Section: Instrument Structural Design and Measurement Principlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study of a measurement system and a method for determining the distance between the grooves of a hydraulic valve

Huang¹,

Long²,

Gan³

et al. 2021

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…As the difculties of mechanical improvement increase, diferent improvement methods have appeared. Chen et al [6] found that the measurement error in angle encoders had signifcant impact to the whole mechanical transmission systems and developed an error model of the encoders, and the error compensation function was applied into RV reducer, in which operation precision was enhanced obviously. Signal acquisition is the precondition in control algorithms, and axial vibration and rotation speed are the main measuring signals in transmission mechanisms; however, these two signals are measured separately, and the synchronization of the two signals becomes a key point in acquisition of transmission mechanism signals.…”

Section: Introductionmentioning

confidence: 99%

A Denoising Algorithm Combined with EMD and LMS for Precise Transmission Signal

Song,

Cao,

Zhou

et al. 2023

Shock and Vibration

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High accuracy and stability in mechanical transmission are crucial for various applications. In spite of the validity of mechanical enhancements, control algorithms’ fulfilment offers a cost-effective and efficient approach to mitigating the effects of noise signals. This study presents a hybrid algorithm that combines EMD with the least mean square (LMS) error to achieve online denoising. Within the algorithm, consecutive mean square error (CMSE) and the l2-norm metric are employed to assess the similarity between intrinsic mode functions (IMFs) and the original signal; therefore, IMFs are separated into three distinct components: noise components, information components, and mixed components. The denoised signal is obtained by partial reconstruction. Subsequently, the denoised signal is employed as a reference signal in the LMS algorithm, which is utilized for practical processing. The performance evaluation of the developed algorithm employs simulation and experimental signals. The obtained results illustrate that the presented approach achieves sufficient accuracy and stability.

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“…Guo et al [7] established a synthetic geometric error model for a five-axis machine tool with tilting head and turntable based on the MBS and the method of homogeneous coordinate transformation. Based on the theory of MBS, Chen et al [8] established an error model of angular measurement with geometric errors of a torsional characteristic measurement system based on MBS, which can effectively predict the angular measurement error. Other new theories have been applied to modeling machine tool errors, such as screw theory.…”

Section: Introductionmentioning

confidence: 99%

A Geometric Accuracy Error Analysis Method for Turn-Milling Combined NC Machine Tool

Zhao

Luo

2020

Symmetry

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Turn-Milling Combined NC machine tool is different from traditional machine tools in structure and process realization. As an important means in the design stage, the analysis method of geometric accuracy error is also different from the traditional method. The actual errors and the error compensation values are a pair of "symmetry" data sets which are connected by the movement of machine tools. The authors try to make them more consistent through this work. The geometric error terms were firstly determined by topological structure analysis, then based on homogeneous coordinate transformation and multibody system theory, the geometric error model was established. With the interval theory, the function rule of sensitivity of geometric error sources to spatial errors was analyzed in detail, and the global maximum interval sensitivity of nine geometric error sources was extracted, providing a theoretical basis for error compensation and precision distribution. The geometric error sensitivity analysis method proposed in this paper can accurately evaluate the influence weights of each error term on the machining accuracy, and identify the important sensitive error terms with great influence on the machining accuracy from many error terms.

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A New Error Model and Compensation Strategy of Angle Encoder in Torsional Characteristic Measurement System

Cited by 12 publications

References 16 publications

Study of a measurement system and a method for determining the distance between the grooves of a hydraulic valve

Study of a measurement system and a method for determining the distance between the grooves of a hydraulic valve

A Denoising Algorithm Combined with EMD and LMS for Precise Transmission Signal

A Geometric Accuracy Error Analysis Method for Turn-Milling Combined NC Machine Tool

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