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Development of an analytical model to estimate the churning losses in high-speed axial piston pumps

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-021-0671-1

Abstract: of high-speed axial piston pumps, but accurate analytical models are not available to estimate the dragtorque associated with the churning losses.In this paper, we derive the analytical expressions of the drag torque acting on the key rotating partsThe calculated drag torque agrees well with the experimental data over a wide range of rotational speeds

Keywords： axial piston pump     rotating parts     high rotational speed     churning losses     drag torque    

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Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 909-920 doi: 10.1007/s11705-021-2100-8

Abstract: The obtained results revealed that the spout morphology simulated by the adjusted mesoscale drag modelIn addition, more thorough gas radial mixing was achieved using the adjusted mesoscale drag model.The mass fraction of water in the gas mixture at the outlet determined by the heterogeneous drag modelwas 1.5 times higher than that obtained by the homogeneous drag model during the simulation of waterwas 75.03%, while the desulfurization efficiencies obtained by the Gidaspow and adjusted mesoscale drag

Keywords： adjusted mesoscale drag model     particle image velocimetry     water vaporization     desulfurization reaction    

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New nonlinear stiffness actuator with predefined torque‒deflection profile

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0721-3

Abstract: A nonlinear stiffness actuator (NSA) could achieve high torque/force resolution in low stiffness rangeincluding leaf springs and especially designed cams, which could perform a predefined relationship between torqueAn analytical methodology that maps the predefined relationship between torque and deflection to theof performing predefined torque‒deflection profiles.Three kinds of prototype experiments, including verification experiment of the predefined torque‒deflection

Keywords： compliant actuator     nonlinear stiffness actuator     nonlinear spring     predefined torque−deflection profile    

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Analysis and characterization of wind-solar-constant torque spring hybridized model

Shantanu ACHARYA,Subhadeep BHATTACHARJEE

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 279-289 doi: 10.1007/s11708-014-0312-z

Abstract: Solar and wind are the most promising renewable energy resources. But their unpredictable and varying nature prevents them from being used as the sole resource for power generation. This paper presents a model of wind and solar thermal hybrid power plant with a spring storage system which is expected to play an efficient role in combating with the drawbacks related to renewable power generation. In the proposed scheme, wind energy is harnessed by a hybrid vertical axis wind turbine, solar energy is utilized by a Stirling engine, and the surplus energy is stored in a winding spring. The paper discusses the working methodologies and analyses the performance of such 2.6 kW hybrid power plant model. It has been observed that the plant is capable of consistently generating 50% of its rated capacity irrespective of limitations in solar and wind resources.

Keywords： hybrid vertical axis wind turbine     Stirling engine     solar-thermal energy     wind energy     constant torque spring    

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Lateral Vibration Analyses of Flying Vehicle under Thrust and Drag

Song Jian

Strategic Study of CAE 2000, Volume 2, Issue 10,   Pages 63-72

Abstract:

In this paper, the influence of thrust and air drag on rocket lateral vibration is studied, and thefrequency reduction under the thrust and drag is analyzed.accelerating and passive decelerating parts of trajectory as well as the cruise flight when thrust and drag

Keywords： aircraft     rocket     lateral vibration     thrust and drag     vibration mode and frequency    

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Comparative study of various artificial intelligence approaches applied to direct torque control of induction

Moulay Rachid DOUIRI, Mohamed CHERKAOUI

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 456-467 doi: 10.1007/s11708-013-0264-8

Abstract: In this paper, three intelligent approaches were proposed, applied to direct torque control (DTC) ofobtained demonstrate the feasibility of the adaptive network-based fuzzy inference system based direct torqueCompared with the classical direct torque control, fuzzy logic based direct torque control (FL-DTC),and neural networks based direct torque control (NN-DTC), the proposed ANFIS-based scheme optimizes theelectromagnetic torque and stator flux ripples, and incurs much shorter execution times and hence the

Keywords： adaptive neuro-fuzzy inference system (ANFIS)     artificial neural network     direct torque control (DTC)     fuzzy    

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Analytical model and finite element computation of braking torque in electromagnetic retarder

Lezhi YE,Guangzhao YANG,Desheng LI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4,   Pages 368-379 doi: 10.1007/s11465-014-0314-x

Abstract:

An analytical model has been developed for analyzing the braking torque in electromagnetic retarderThe magnetic field distribution in air gap, the eddy current induced in the rotor and the braking torqueThe influencing factors of braking torque have been studied.

Keywords： electromagnetic retarder     magnetic field distribution     magnetic circuit     finite element method    

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Nonlinear programming control using differential aerodynamic drag for CubeSat formation flying Article

Sheng-chao DENG, Tao MENG, Zhong-he JIN

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 7,   Pages 867-881 doi: 10.1631/FITEE.1500493

Abstract: Atmospheric drag is one of the space environmental forces that low-orbit satellites can use to realizepresents an integrated control strategy to achieve the desired in-track formation through the atmospheric dragAtmospheric drag cannot be ignored and has a major impact on both attitude and orbit of the satellite

Keywords： QB50     ZJUCubeSat     Atmospheric drag     Formation flying    

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Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode

Abdelkarim AMMAR,Amor BOUREK,Abdelhamid BENAKCHA

Frontiers in Energy 2020, Volume 14, Issue 4,   Pages 836-849 doi: 10.1007/s11708-017-0444-z

Abstract: It describes a coupling of sliding mode direct torque control (DTC) with sliding mode flux and speedThis algorithm uses direct torque control basics and the sliding mode approach.A robust electromagnetic torque and flux controllers are designed to overcome the conventional SVM-DTC

Keywords： induction motor     direct torque control (DTC)     space vector modulation (SVM)     sliding mode control (SMC)    

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A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot

Kejia LI, Xilun DING, Marco CECCARELL

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 219-230 doi: 10.1007/s11465-012-0320-9

Abstract: A novel index of total torque is proposed by considering the posture of the supporting legs.

Keywords： six-legged robots     dynamic modeling     performance index    

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Sensorless direct torque control for salient-pole PMSM based on extended Kalman filter fed by AC/DC/AC

F. BENCHABANE, A. TITAOUINE, O. BENNIS, K. YAHIA, D. TAIBI, A. GUETTAF

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 247-254 doi: 10.1007/s11708-012-0190-1

Abstract: synchronous motor (IPMSM) drives method with extended Kalman filter (EKF) for speed, rotor position and load torqueThe direct torque control (DTC) technique for permanent magnet synchronous motor (PMSM) is receiving

Keywords： direct torque control (DTC)     sensorless control     extended Kalman filter (EKF)     permanent magnet synchronous    

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Method of internal 3D flow field numerical simulation for hydrodynamic torque converter

SHANG Tao, ZHAO Dingxuan, ZHANG Yuankun, GUO Xiangen, SHI Xiangzhong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 86-90 doi: 10.1007/s11465-008-0012-7

Abstract: To enhance the performance of a hydrodynamic torque converter and thoroughly understand the trait offlow, a numerical simulation method of internal 3D flow for the three-element centrifugal hydrodynamic torqueThe performance parameters of the hydrodynamic torque converter were predicted.distribution of the flow field, have practical significance for the design and improvement of a hydrodynamic torque

Keywords： velocity distribution     calculation     numerical simulation     three-element centrifugal     converter    

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Static balancing of planar articulated robots

Giuseppe QUAGLIA,Zhe YIN

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 326-343 doi: 10.1007/s11465-015-0355-9

Abstract: mechanical springs are discussed and their parameters are decided according to the requirements of torque

Keywords： robotics     static balancing     pneumatic spring     mechanical spring     torque compensation    

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Reduced torque ripple for rotational load with high inertia of HY-2A satellite

Zhou Yong,Li Zhengjun,Ma Chao and Wang Xiaoning

Strategic Study of CAE 2014, Volume 16, Issue 3,   Pages 43-49

Abstract: account attitude stability，microwave scattermeter and microwave radiometer while rotating need to reduce torqueRestraining cogging torque of motor， eliminating quantization error with fix angle timing，compensatingThe control system and motor has been simulated by accurate model，results show that the torque ripple

Keywords： high inertia     torque ripple     quantization error     dead time     accurate model    

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Study on auto-disturbances-rejection AC adjustable speed based on speed sensorless direct torque control

Dai Juchuan,Wu Xinkai,Wen Li

Strategic Study of CAE 2009, Volume 11, Issue 4,   Pages 91-95

Abstract:

In direct torque control system, the PID controller is often adoptedIn this paper, new auto-disturbance-rejection controller (ADRC) is introduced into direct torque controlThe performance difference is analyzed between PID controller and ADRC in speed sensorless direct torque

Keywords： direct torque control     active disturbances rejection control     speed observer     speed sensorless     induction    

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Title Author Date Type Operation

Development of an analytical model to estimate the churning losses in high-speed axial piston pumps

Journal Article

Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

Journal Article

New nonlinear stiffness actuator with predefined torque‒deflection profile

Journal Article

Analysis and characterization of wind-solar-constant torque spring hybridized model

Shantanu ACHARYA,Subhadeep BHATTACHARJEE

Journal Article

Lateral Vibration Analyses of Flying Vehicle under Thrust and Drag

Song Jian

Journal Article

Comparative study of various artificial intelligence approaches applied to direct torque control of induction

Moulay Rachid DOUIRI, Mohamed CHERKAOUI

Journal Article

Analytical model and finite element computation of braking torque in electromagnetic retarder

Lezhi YE,Guangzhao YANG,Desheng LI

Journal Article

Nonlinear programming control using differential aerodynamic drag for CubeSat formation flying

Sheng-chao DENG, Tao MENG, Zhong-he JIN

Journal Article

Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode

Abdelkarim AMMAR,Amor BOUREK,Abdelhamid BENAKCHA

Journal Article

A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot

Kejia LI, Xilun DING, Marco CECCARELL

Journal Article

Sensorless direct torque control for salient-pole PMSM based on extended Kalman filter fed by AC/DC/AC

F. BENCHABANE, A. TITAOUINE, O. BENNIS, K. YAHIA, D. TAIBI, A. GUETTAF

Journal Article

Method of internal 3D flow field numerical simulation for hydrodynamic torque converter

SHANG Tao, ZHAO Dingxuan, ZHANG Yuankun, GUO Xiangen, SHI Xiangzhong

Journal Article

Static balancing of planar articulated robots

Giuseppe QUAGLIA,Zhe YIN

Journal Article

Reduced torque ripple for rotational load with high inertia of HY-2A satellite

Zhou Yong,Li Zhengjun,Ma Chao and Wang Xiaoning

Journal Article

Study on auto-disturbances-rejection AC adjustable speed based on speed sensorless direct torque control

Dai Juchuan,Wu Xinkai,Wen Li

Journal Article