Performance index analysis of a six-axis heavy force sensor based on the Stewart platform

Jia, Zhenyuan; Lin, Sheng; Liu, W

doi:10.1243/09544062jmes1819

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…Simultaneously, the six supports arrangement mode can offer a wider range and higher rigidity. A six-component heavy force sensor based on the Stewart platform has been developed by Jia et al 13,14 The heavy force sensor is based on a modified six supports mode, which allows the measuring range up to 200 kN, its linear error and repeatability error are within 1%, and the interference error is within 4.5%. Though the six supports arrangement mode has a good performance, the disadvantage of space occupation that enable this mode cannot be installed on the simulated mechanical device.…”

Section: Analysis Of the Sensors Arrangementmentioning

confidence: 99%

Design and calibration method for a novel six-component piezoelectric balance

Jia

Gao

Ren

et al. 2013

Proceedings of the Institution of Mechanical Engineers, Part C:

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Wind tunnel balance is one of the most important measurement equipments in aerodynamic testing. In this paper, a new six-component piezoelectric balance is developed to measure the dynamic impact loading force in the wind tunnel. The arrangement mode of the triaxial piezoelectric load cells is confirmed based on the theory analysis. Furthermore, the mathematical model is established according to the calibration experimental results. Support vector machine is proposed to develop the piezoelectric balance calibration. It is an effective method to predict the model using small samples and reduce the duration of the calibration. The results of prediction are compared to the conventional calibration and the dynamic step response. The linearity and repeatability of the balance are within 0.2% and 0.5%, respectively, and the interference error has been reduced using the support vector machine method. The experimental results have shown that the four supports arrangement mode can reduce the area of attack and enhance the measuring range of the balance. The dynamic characteristics of the piezoelectric balance performed by the step response test show that the designed balance is feasible to measure the dynamic impact airloads in a wind tunnel.

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Section: Analysis Of the Sensors Arrangementmentioning

confidence: 99%

Design and calibration method for a novel six-component piezoelectric balance

Jia

Gao

Ren

et al. 2013

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…The study was used to outline simplified criteria for a load and resistance factor design (LRFD) approach. Jia et al 9 proposed the six-axis heavy force sensor based on the Stewart platform fixed to a load sharing beam for the measurement of a multi-axis heavy force. Meng et al 10 describe an experimental study of a skew bridge to validate a finite element model.…”

Section: Introductionmentioning

confidence: 99%

Beam moment and shear force calculations using digital-camera experiments

Hsu

2019

Advances in Mechanical Engineering

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This article presents an image-based method to find the beam moment and shear force using the measured beam displacements. A least-squares method is first developed to find the rotations and lateral displacements at beam ends using the measured displacements along the beam. Then, the moments and shear forces of this beam segment are obtained using the matrix formulation including shear deformation and large displacement effects. Two experimental schemes, image symbol dot and image-correlation methods, were used to validate the accuracy of the proposed scheme. The comparison of the results between the finite element analysis and the two methods shows acceptable accuracy. Although this method is mainly applied to the elastic region, one can still find the moment and shear force at the inelastic region using the equilibrium equation.

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“…The force sensor is often used to measure signals such as force, pressure and displacement. It is widely used in the fields of automatic weighing, process detection and switch control in various industries (Jia et al, 2010;Tarighi et al, 2016). The working principle of the force sensor is to measure the strain of the sensitive area by using the strain gauge attached to the sensitive area of the elastomer, and then obtain the corresponding relationship between the strain input signal and the output electrical signal through accurate static and dynamic calibrations to obtain the loading information for objects (Li et al, 2018;Qu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Optimization of internal thread structure of force sensor considering fatigue performance

Sun

Wang

Zhang³

2019

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Purpose Fatigue damage of internal threads has gradually become the main failure mode of force sensor. To make the internal thread structure of force sensor meet the fatigue performance requirements, the design criteria of static strength and fatigue life are comprehensively considered in this paper. Design/methodology/approach The variation of static stress and fatigue life with the size of the main structure is obtained by simulation. By changing the number of thread turns, the hub height and outer diameter of the hub, the optimized design of the spoke force sensor is determined. Findings The experiment was carried out based on the determined optimized structure, and the results showed that the fatigue life meets the design requirements. Originality/value This research has certain guiding significance for the design and developments of high-cycle fatigue force sensors.

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Performance index analysis of a six-axis heavy force sensor based on the Stewart platform

Cited by 5 publications

References 10 publications

Design and calibration method for a novel six-component piezoelectric balance

Design and calibration method for a novel six-component piezoelectric balance

Beam moment and shear force calculations using digital-camera experiments

Optimization of internal thread structure of force sensor considering fatigue performance

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