A Novel Trans-Scale Precision Positioning Stage Based on the Stick-Slip Effect

Zhong, Bowen; Chen, Liguo; Wang, Zhenhua; Sun, Lining

doi:10.4018/ijimr.2012040101

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…They revealed the principle of the “stick & slip” motion. The essence of the stick-slip principle is the friction force change between maximum static friction force and sliding friction force [ 20 , 21 ]. As illustrated in Figure 1 , the piezoelectric actuator pushes the driving object forward and the slider keeps relatively static to the driving object when the driving signal rises slowly from O to A.…”

Section: Introductionmentioning

confidence: 99%

A Novel Stick-Slip Nanopositioning Stage Integrated with a Flexure Hinge-Based Friction Force Adjusting Structure

et al. 2020

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The piezoelectrically-actuated stick-slip nanopositioning stage (PASSNS) has been applied extensively, and many designs of PASSNSs have been developed. The friction force between the stick-slip surfaces plays a critical role in successful movement of the stage, which influences the load capacity, dynamic performance, and positioning accuracy of the PASSNS. Toward solving the influence problems of friction force, this paper presents a novel stick-slip nanopositioning stage where the flexure hinge-based friction force adjusting unit was employed. Numerical analysis was conducted to estimate the static performance of the stage, a dynamic model was established, and simulation analysis was performed to study the dynamic performance of the stage. Further, a prototype was manufactured and a series of experiments were carried out to test the performance of the stage. The results show that the maximum forward and backward movement speeds of the stage are 1 and 0.7 mm/s, respectively, and the minimum forward and backward step displacements are approximately 11 and 12 nm, respectively. Compared to the step displacement under no working load, the forward and backward step displacements only increase by 6% and 8% with a working load of 20 g, respectively. And the load capacity of the PASSNS in the vertical direction is about 72 g. The experimental results confirm the feasibility of the proposed stage, and high accuracy, high speed, and good robustness to varying loads were achieved. These results demonstrate the great potential of the developed stage in many nanopositioning applications.

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Section: Introductionmentioning

confidence: 99%

A Novel Stick-Slip Nanopositioning Stage Integrated with a Flexure Hinge-Based Friction Force Adjusting Structure

et al. 2020

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Low‐profile open‐slot antenna with three branch slots for triple‐wideband LTE operation in the metal‐framed smartphone

2015

Micro & Optical Tech Letters

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A low‐profile open‐slot antenna capable of providing a triple‐wideband LTE operation for the metal‐framed smartphone is presented. The antenna has a low profile of 7 mm and can fit in a narrow region between the metal frame and the display panel of the metal‐framed smartphone. The antenna comprises three branch slots sharing a same opening disposed at the top or bottom edge of the casing of the smartphone. Two branch slots are excited using a U‐shape microstrip feedline with wideband matching circuits embedded therein while the third‐branch slot is excited parasitically. With the proposed feeding arrangement, the antenna provides the triple‐wideband LTE operation to cover the low band of 698–960 MHz, middle band of 1710–2690 MHz, and high band of 3400–3800 MHz. Details of the proposed open‐slot antenna are presented and discussed. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2231–2238, 2015

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A coupled‐fed loop antenna for metal‐rimmed mobile phone applications

Liu

Gong

2016

Micro & Optical Tech Letters

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This letter presents a very simple coupled‐fed loop antenna for metal‐framed mobile phones, which is capable of providing hepta‐band WWAN/LTE operation. By utilizing the metal rim as a part of antenna, the proposed antenna only occupies a 14.5 × 8 mm2 area of the no‐ground portion. The proposed antenna consists of two coupled‐fed loops mainly composed of parts of the metal rim with two slits, a high‐pass matching circuit, and a distributed inductor. The lower band is initially provided by the quarter‐wavelength resonant mode of the longer coupled‐fed loop and further widen by a high‐pass matching circuit. The upper band is attained by the higher‐order mode of the longer coupled‐fed loop along with the quarter‐wavelength mode of the shorter coupled‐fed loop. Consequently, the generated two wide bands can cover the 824–960 and 1710–2690 MHz simultaneously. Besides, an antenna prototype is manufactured as well as tested, and the good measured antenna performances including reflection coefficient, radiation pattern, antenna gain and efficiency indicate that the proposed antenna is suitable for the metal‐frame mobile phone applications. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:371–377, 2017

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A Novel Trans-Scale Precision Positioning Stage Based on the Stick-Slip Effect

Cited by 5 publications

References 24 publications

A Novel Stick-Slip Nanopositioning Stage Integrated with a Flexure Hinge-Based Friction Force Adjusting Structure

A Novel Stick-Slip Nanopositioning Stage Integrated with a Flexure Hinge-Based Friction Force Adjusting Structure

Low‐profile open‐slot antenna with three branch slots for triple‐wideband LTE operation in the metal‐framed smartphone

A coupled‐fed loop antenna for metal‐rimmed mobile phone applications

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