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High-bandwidth nanopositioning via active control of system resonance

Linlin LI, Sumeet S. APHALE, Limin ZHU

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 331-339 doi: 10.1007/s11465-020-0619-x

Abstract: Typically, the achievable positioning bandwidth for piezo-actuated nanopositioners is severely limited by the first, lightly-damped resonance. To overcome this issue, a variety of open- and closed-loop control techniques that commonly combine damping and tracking actions, have been reported in literature. However, in almost all these cases, the achievable closed-loop bandwidth is still limited by the original open-loop resonant frequency of the respective positioning axis. Shifting this resonance to a higher frequency would undoubtedly result in a wider bandwidth. However, such a shift typically entails a major mechanical redesign of the nanopositioner. The integral resonant control (IRC) has been reported earlier to demonstrate the significant performance enhancement, robustness to parameter uncertainty, gua-ranteed stability and design flexibility it affords. To further exploit the IRC scheme’s capabilities, this paper presents a method of actively shifting the resonant frequency of a nanopositioner’s axis, thereby delivering a wider closed-loop positioning bandwidth when controlled with the IRC scheme. The IRC damping control is augmented with a standard integral tracking controller to improve positioning accuracy. And both damping and tracking control parameters are analytically optimized to result in a Butterworth Filter mimicking pole-placement—maximally flat passband response. Experiments are conducted on a nanopositioner’s axis with an open-loop resonance at 508 Hz. It is shown that by employing the active resonance shifting, the closed-loop positioning bandwidth is increased from 73 to 576 Hz. Consequently, the root-mean-square tracking errors for a 100 Hz triangular trajectory are reduced by 93%.

Keywords： nanopositioning stage     high-bandwidth     resonant mode control     tracking control     integral resonant control    

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Preload characteristics identification of the piezoelectric-actuated 1-DOF compliant nanopositioning

Ruizhou WANG, Xianmin ZHANG

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 20-36 doi: 10.1007/s11465-015-0328-z

Abstract:

Packaged piezoelectric ceramic actuators (PPCAs) and compliant mechanisms are attractive for nanopositioningposition of the terminal moving plate, the positioning accuracy and the dynamic performance of the nanopositioningpresents a novel external preload mechanism and tests it in a 1-degree of freedom (1-DOF) compliant nanopositioning

Keywords： nanopositioning     preload characteristic     packaged piezoelectric ceramic actuator     compliant mechanism    

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Compressor performance of two-stage turbocharging system

HE Yituan, MA Chaochen, WEI Mingshan, ZHU Zhifu, HE Yituan

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 218-221 doi: 10.1007/s11465-008-0027-0

Abstract: To study the performance of high and low stage compressors and that of the system as a whole, a two-stageturbocharging system was matched, and a special two-stage turbocharging system test bench was built.For each test curve, the speeds of the two stage turbochargers were adjusted to the fixed data, and amany differences between the corrected mass flow and the actual mass flow of the high pressure (HP) stageThe system can get very high supercharging pressure when the speeds of the two stage turbochargers are

Keywords： special two-stage     HP     performance experiment     reliability     actual supercharging    

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Electronically enhancing the long-range nanopositioning accuracy of a Lorentz force actuator Research Article

Bimal Jeet GOTEEA, Qianjun ZHANG, Wei DONG,bj.goteea@gmail.com,zhang_qj@stu.hit.edu.cn,dongwei@hit.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 7,   Pages 1080-1092 doi: 10.1631/FITEE.2200255

Abstract: This paper presents a precision centimeter-range positioner based on a using . An additional digital-to-analog converter and an operational amplifier (op amp) circuit together with a suitable controller are used to enhance the positioning accuracy to the nanometer level. First, a suitable coil is designed for the actuator based on the stiffness of the flexure guide model. The flexure mechanism and actuator performance are then verified with finite element analysis. Based on these, a means to enhance the positioning performance electronically is presented together with the control scheme. Finally, a prototype is fabricated, and the performance is evaluated. This positioner features a range of 10 mm with a resolution of 10 nm. The proposed scheme can be extended to other systems.

Keywords： Nanopositioning     Flexure guides     Long range     Voice coil motor     Lorentz force actuator    

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Two-stage stochastic programming with robust constraints for the logistics network post-disruption response

Frontiers of Engineering Management   Pages 67-81 doi: 10.1007/s42524-022-0240-2

Abstract: address the LN post-disruption response strategy optimization problem, this study proposes a novel two-stage

Keywords： logistics network design     post-disruption response strategy     two-stage stochastic programming     conditional    

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Efficiency measurement for mixed two-stage nonhomogeneous network processes with shared extra intermediate

Qingxian AN, Xuyang LIU, Shijie DING

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 259-274 doi: 10.1007/s42524-019-0080-x

Abstract: This study proposes a data-driven, mixed two-stage network data envelopment analysis model.

Keywords： shared resource allocation     mixed two-stage system     data envelopment analysis     efficiency    

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Modified landfill gas generation rate model of first-order kinetics and two-stage reaction

Jiajun CHEN , Hao WANG , Na ZHANG ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 313-319 doi: 10.1007/s11783-009-0025-4

Abstract: The first-order kinetics and two-stage reaction (FKTSR) model of the LFG generation rate includes mechanismsmodified FKTSR model, including the LFG production potential (), the reaction rate constant in the first stage(), and the reaction rate constant in the second stage () of 64.746 L, 0.202 d, and 0.338&

Keywords： landfill gas (LFG)     generation rate model     first-order kinetics     two-stage reaction     outflow function    

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Exergy analysis of multi-stage crude distillation units

Xingang LI, Canwei LIN, Lei WANG, Hong LI

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 437-446 doi: 10.1007/s11705-013-1349-y

Abstract: This paper aims to investigate the multi-stage effect on crude distillation units (CDUs) in thermodynamicsIn this regard, we proposed three-, four-, five-, and six-stage CDU processes with all variables constrainedWhen the exergy losses in heat exchangers are disregarded, the three- and four-stage CDUs have lowerexergy losses than the five- and six-stage CDUs.

Keywords： exergy     exergy loss     crude oil distillation     multi-stage     energy saving    

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Discussion on back-to-back two-stage centrifugal compressor compact design techniques

Lei HUO, Huoxing LIU

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 390-400 doi: 10.1007/s11465-013-0278-2

Abstract:

Design a small flow back-to-back two-stage centrifugal compressor in the aviation turbocharger, theTherefore, the stationary part of the back-to-back two-stage centrifugal compressor should pay full attention

Keywords： back-to-back     two-stage     centrifugal compressor     design     Internal flow    

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Simulating multiphase flow in a two-stage pusher centrifuge using computational fluid dynamics

Chong PANG, Wei TAN, Endian SHA, Yuanqing TAO, Liyan LIU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 329-338 doi: 10.1007/s11705-012-1205-5

Abstract: The design of two-stage pusher centrifuges have developed rapidly, but a good understanding of the theoryresults show that this simulation method could be an effective tool to optimize the design of the two-stage

Keywords： two-stage pusher centrifuge     multiphase flow     CFD     dynamic mesh     porous media    

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Sustainability performance analysis of environment innovation systems using a two-stage network DEA model

Frontiers of Engineering Management   Pages 425-438 doi: 10.1007/s42524-022-0205-5

Abstract: Investigations on environmental innovation system performance constantly assume a single-stage independentA two-stage data envelopment analysis (DEA) model is developed in this study to analyze the efficiency

Keywords： envelopment analysis     environmental efficiency     environmental innovation system     shared resources     two-stage    

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Removal of odors and VOCs in municipal solid waste comprehensive treatment plants using a novel three-stage

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-021-1421-7

Abstract:

A novel three-stage integrated biofilter (TSIBF) composed of acidophilic

Keywords： Biofiltration     Multi-stage biofilter     Volatile organic compounds     Waste gas treatment     Bioaerosol emissions    

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Mechatronic design of a novel linear compliant positioning stage with large travel range and high out-of-plane

Hua LIU, Xin XIE, Ruoyu TAN, Lianchao ZHANG, Dapeng FAN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2,   Pages 265-278 doi: 10.1007/s11465-017-0453-y

Abstract: proposed in previous studies are mainly designed by considering only a single performance indicator of the stageIn this study, a 2-degree-of-freedom linear compliant positioning stage (LCPS) is developed by mechatronicdesign to balance the interacting performance indicators and realize the desired positioning stage.The analytical model of the stage is confirmed by experiments.dimension of the stage.

Keywords： mechatronic design     linear compliant positioning stage     large travel range     high out-of-plane payload capacity    

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Development of a novel two-stage proportional valve with a pilot digital flow distribution

Qiang GAO, Yuchuan ZHU, Changwen WU, Yulei JIANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 420-434 doi: 10.1007/s11465-020-0622-2

Abstract: Pilot two-stage proportional valves are widely used in high-power hydraulic systems.dynamic performance, reliability, and digitization of the traditional proportional valve, a novel two-stage

Keywords： two-stage proportional valve     digital flow distribution     high-speed on/off valve     position tracking characteristic    

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Scaling up a novel denitrifying microbial fuel cell with an oxic-anoxic two stage biocathode

Peng LIANG, Jincheng WEI, Ming LI, Xia HUANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 6,   Pages 913-919 doi: 10.1007/s11783-013-0583-3

Abstract: A scaled up microbial fuel cell (MFC) of a 50 L volume was set up with an oxic-anoxic two-stage biocathode

Keywords： microbial fuel cell (MFC)     oxic-anoxic two stage biocathode     denitrifying    

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Title Author Date Type Operation

High-bandwidth nanopositioning via active control of system resonance

Linlin LI, Sumeet S. APHALE, Limin ZHU

Journal Article

Preload characteristics identification of the piezoelectric-actuated 1-DOF compliant nanopositioning

Ruizhou WANG, Xianmin ZHANG

Journal Article

Compressor performance of two-stage turbocharging system

HE Yituan, MA Chaochen, WEI Mingshan, ZHU Zhifu, HE Yituan

Journal Article

Electronically enhancing the long-range nanopositioning accuracy of a Lorentz force actuator

Bimal Jeet GOTEEA, Qianjun ZHANG, Wei DONG,bj.goteea@gmail.com,zhang_qj@stu.hit.edu.cn,dongwei@hit.edu.cn

Journal Article

Two-stage stochastic programming with robust constraints for the logistics network post-disruption response

Journal Article

Efficiency measurement for mixed two-stage nonhomogeneous network processes with shared extra intermediate

Qingxian AN, Xuyang LIU, Shijie DING

Journal Article

Modified landfill gas generation rate model of first-order kinetics and two-stage reaction

Jiajun CHEN , Hao WANG , Na ZHANG ,

Journal Article

Exergy analysis of multi-stage crude distillation units

Xingang LI, Canwei LIN, Lei WANG, Hong LI

Journal Article

Discussion on back-to-back two-stage centrifugal compressor compact design techniques

Lei HUO, Huoxing LIU

Journal Article

Simulating multiphase flow in a two-stage pusher centrifuge using computational fluid dynamics

Chong PANG, Wei TAN, Endian SHA, Yuanqing TAO, Liyan LIU

Journal Article

Sustainability performance analysis of environment innovation systems using a two-stage network DEA model

Journal Article

Removal of odors and VOCs in municipal solid waste comprehensive treatment plants using a novel three-stage

Journal Article

Mechatronic design of a novel linear compliant positioning stage with large travel range and high out-of-plane

Hua LIU, Xin XIE, Ruoyu TAN, Lianchao ZHANG, Dapeng FAN

Journal Article

Development of a novel two-stage proportional valve with a pilot digital flow distribution

Qiang GAO, Yuchuan ZHU, Changwen WU, Yulei JIANG

Journal Article

Scaling up a novel denitrifying microbial fuel cell with an oxic-anoxic two stage biocathode

Peng LIANG, Jincheng WEI, Ming LI, Xia HUANG

Journal Article