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Classification of EEG-based single-trial motor imagery tasks using aB-CSP method forBCI Research Articles

Zhi-chuan TANG, Chao LI, Jian-feng WU, Peng-cheng LIU, Shi-wei CHENG

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 8,   Pages 1087-1098 doi: 10.1631/FITEE.1800083

Abstract: Classifying single-trial electroencephalogram (EEG) based motor imagery (MI) tasks is extensively usedinto spatial patterns, and the features that can describe the maximum differences of two classes of MIfeatures which are input into a back propagation neural network (BPNN) classifier to classify single-trial MIThe results demonstrate that our proposed B-CSP method can classify EEG-based MI tasks effectively, and

Keywords： Electroencephalogram (EEG)     Motor imagery (MI)     Improved common spatial pattern (B-CSP)     Feature extraction    

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Linear ultrasonic motor using quadrate plate transducer

Jiamei JIN, Chunsheng ZHAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 88-91 doi: 10.1007/s11465-009-0016-y

Abstract: A linear ultrasonic motor using a quadrate plate transducer was developed for precision positioning.This motor consists of two pairs of Pb(Zr,Ti)O piezoelectric ceramic elements, which are piezoelectricallyexcited into the second-bending mode of the motor stator’s neutral surface in two orthogonal directionsThe performance characteristics achieved by the motor are: 1) a maximum linear speed of more than 60

Keywords： ultrasonic motor     quadrate plate     coincident frequency     alternant contact    

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Design and analysis of linear oscillating motor for linear pump application-magnetic field, dynamics

Zongxia JIAO,Tianyi WANG,Liang YAN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 351-362 doi: 10.1007/s11465-016-0407-9

Abstract:

A linear oscillating motor is an electromagnetic actuator that can achieve short-stroke reciprocatingIn this paper, a general framework of linear oscillating motor design and optimization is addressed in

Keywords： linear oscillating motor     linear pump     magnetic field     motor optimization    

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Cold War Satellite Imagery Gets New Life

Mitch Leslie

Engineering 2021, Volume 7, Issue 6,   Pages 709-711 doi: 10.1016/j.eng.2021.04.004

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modified neural learning algorithm for online rotor resistance estimation in vector controlled induction motor

A. CHITRA,S. HIMAVATHI

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 22-30 doi: 10.1007/s11708-014-0339-1

Abstract: Online estimation of rotor resistance is essential for high performance vector controlled drives. In this paper, a novel modified neural algorithm has been identified for the online estimation of rotor resistance. Neural based estimators are now receiving active consideration as they have a number of advantages over conventional techniques. The training algorithm of the neural network determines its learning speed, stability, weight convergence, accuracy of estimation, speed of tracking and ease of implementation. In this paper, the neural estimator has been studied with conventional and proposed learning algorithms. The sensitivity of the rotor resistance change has been tested for a wide range of variation from -50% to+50% on the stability of the drive system with and without estimator. It is quiet appealing to settle with optimal estimation time and error for the viable realization. The study is conducted extensively for estimation and tracking. The proposed learning algorithm is found to exhibit good estimation and tracking capabilities. Besides, it reduces computational complexity and, hence, more feasible for practical digital implementation.

Keywords： neural networks     back propagation (BP)     rotor resistance estimators     vector control     induction motor    

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Review of human–robot coordination control for rehabilitation based on motor function evaluation

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0684-4

Abstract: As a wearable and intelligent system, a lower limb exoskeleton rehabilitation robot can provide auxiliary rehabilitation training for patients with lower limb walking impairment/loss and address the existing problem of insufficient medical resources. One of the main elements of such a human–robot coupling system is a control system to ensure human–robot coordination. This review aims to summarise the development of human–robot coordination control and the associated research achievements and provide insight into the research challenges in promoting innovative design in such control systems. The patients’ functional disorders and clinical rehabilitation needs regarding lower limbs are analysed in detail, forming the basis for the human–robot coordination of lower limb rehabilitation robots. Then, human–robot coordination is discussed in terms of three aspects: modelling, perception and control. Based on the reviewed research, the demand for robotic rehabilitation, modelling for human–robot coupling systems with new structures and assessment methods with different etiologies based on multi-mode sensors are discussed in detail, suggesting development directions of human–robot coordination and providing a reference for relevant research.

Keywords： human–robot coupling     lower limb rehabilitation     exoskeleton robot     motor assessment     dynamical model    

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Association of metabolic syndrome with arterial compliance in children and adolescents

ZHANG Li, MI Jie, LI Ming, JIANG Benyu

Frontiers of Medicine 2007, Volume 1, Issue 1,   Pages 68-73 doi: 10.1007/s11684-007-0014-6

Abstract: The association of metabolic syndrome (MS) with arterial compliance in children and adolescents was explored. 337 subjects (188 men and 149 women) aged 6 18 (10.95?3.01) years, out of Beijing Child Metabolic Syndrome Study , were divided into three case groups (one component, two components, three & more components of MS) and one control group based on the Cook s MS definition in children and adolescents. Measurements including anthropometry, blood pressure, fasting plasma glucose and insulin, serum lipid profile were done. Homeostasis model assessment for insulin resistance (HOMA-IR) index was calculated for estimating individual insulin resistance. Arterial compliance was measured using digital pulse wave analyzing method from the pulse trace machine (Micro medical, London), and then the stiffness index (SI) was determined. The mean value of SI in MS group was significant higher than that in control group [(7.69?1.63) vs (6.25?0.86) m/s, <0.01]. With the increase of the clustering of MS components, SI and HOMA-IR were gradually increased. After taking account of gender, age and pubertal development, the partial correlation analysis showed that the amount of components of MS and HOMA-IR were positively correlated with SI (both values were less than 0.05). The arterial compliance of MS group was significantly lowered in children and adolescents, and with the increase of the clustering of MS components, arterial compliance was gradually decreased. It was suggested that arterial compliance assessment in children and adolescents was important for early prevention of cardiovascular diseases.

Keywords： compliance assessment     correlation analysis     cardiovascular     clustering     HOMA-IR    

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Catalytic cracking of endothermic fuels in coated tube reactor

LI Jia, ZOU Jijun, ZHANG Xiangwen, GUO Wei, MI Zhentao

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2,   Pages 181-185 doi: 10.1007/s11705-008-0032-1

Abstract: Suspensoid of HZSM-5 or HY zeolites mixed with a self-made ceramic-like binder was coated on the inner wall of a tubular reactor by gas-aided fluid displacement technology. The coated zeolites were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The coating thickness is 10–20 ?m and the particle size of the zeolites is in the range of 1–5 ?m. In the coated reactor, cracking of endothermic fuels including -dodecane and aviation fuel RP-3 was carried out separately under supercritical conditions at 600°C and 625°C to investigate their heat sinks and conversion of catalytic reactions. For the reaction catalyzed by HY(25% mass fraction) coating, the heat sink capacity of -dodecane are 815.7 and 901.9 kJ/kg higher than that of the bare tube at 600°C and at 625°C, respectively. Conversion of -dodecane also increases from 42% to 60% at 600°C and from 66% to 80% at 625°C. The coated zeolite can significantly inhibit the carbon deposition during supercritical cracking reactions.

Keywords： HZSM-5     self-made ceramic-like     gas-aided     Conversion     Suspensoid    

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Pilot scale autothermal gasification of coconut shell with CO

Bayu PRABOWO,Herri SUSANTO,Kentaro UMEKI,Mi YAN,Kunio YOSHIKAWA

Frontiers in Energy 2015, Volume 9, Issue 3,   Pages 362-370 doi: 10.1007/s11708-015-0375-5

Abstract: This paper explored the feasibility and benefit of CO utilization as gasifying agent in the autothermal gasification process. The effects of CO injection on reaction temperature and producer gas composition were examined in a pilot scale downdraft gasifier by varying the CO /C ratio from 0.6 to 1.6. O was injected at an equivalence ratio of approximately 0.33–0.38 for supplying heat through partial combustion. The results were also compared with those of air gasification. In general, the increase in CO injection resulted in the shift of combustion zone to the downstream of the gasifier. However, compared with that of air gasification, the long and distributed high temperature zones were obtained in CO -O gasification with a CO /C ratio of 0.6–1.2. The progress of the expected CO to CO conversion can be implied from the relatively insignificant decrease in CO fraction as the CO /C ratio increased. The producer gas heating value of CO -O gasification was consistently higher than that of air gasification. These results show the potential of CO -O gasification for producing high quality producer gas in an efficient manner, and the necessity for more work to deeply imply the observation.

Keywords： biomass gasification     CO2     downdraft gasifier     autothermal    

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Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid

Nitin Kumar SAXENA,Ashwani Kumar SHARMA

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 472-485 doi: 10.1007/s11708-015-0373-7

Abstract: It is well recognized that the voltage stability of a power system is affected by the load model and hence, to effectively analyze the reactive power compensation of an isolated hybrid wind-diesel based power system, the loads need to be considered along with the generators in a transient analysis. This paper gives a detailed mathematical modeling to compute the reactive power response with small voltage perturbation for composite load. The composite load is a combination of the static and dynamic load model. To develop this composite load model, the exponential load is used as a static load model and induction motors (IMs) are used as a dynamic load model. To analyze the dynamics of IM load, the fifth, third and first order model of IM are formulated and compared using differential equations solver in Matlab coding. Since the decentralized areas have many small consumers which may consist large numbers of IMs of small rating, it is not realistic to model either a single large rating unit or all small rating IMs together that are placed in the system. In place of using a single large rating IM, a group of motors are considered and then the aggregate model of IM is developed using the law of energy conservation. This aggregate model is used as a dynamic load model. For different simulation studies, especially in the area of voltage stability with reactive power compensation of an isolated hybrid power system, the transfer function of the composite load is required. The transfer function of the composite load is derived in this paper by successive derivation for the exponential model of static load and for the fifth and third order IM dynamic load model using state space model.

Keywords： isolated hybrid power system (IHPS)     composite load model     static load     dynamic load     induction motor load    

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Urban landscape classification using Chinese advanced high-resolution satellite imagery and an object-oriented

Li-gang MA,Jin-song DENG,Huai YANG,Yang HONG,Ke WANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3,   Pages 238-248 doi: 10.1631/FITEE.1400083

Abstract: The presented method and the Chinese ZY-1 02C satellite imagery are robust and effective for urban landscape

Keywords： ZY-1 02C satellite     Classification     Urban     Multi-variable model    

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Remote Sensing and Precision Agriculture Technologies for Crop Disease Detection and Management with a Practical Application Example Review

Chenghai Yang

Engineering 2020, Volume 6, Issue 5,   Pages 528-532 doi: 10.1016/j.eng.2019.10.015

Abstract: Airborne and satellite imagery acquired during growing seasons can be used not only for early detectionSpecifically, the article illustrates how airborne and satellite imagery and variable rate technologyhow site-specific fungicide application has been implemented using prescription maps derived from the imagery

Keywords： Crop disease     Airborne imagery     High-resolution satellite imagery     Cotton root rot Prescription map    

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High resolution satellite imaging sensors for precision agriculture

Chenghai YANG

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 393-405 doi: 10.15302/J-FASE-2018226

Abstract: resolution satellite sensors have significantly narrowed the gap in spatial resolution between satellite imageryand airborne imagery.conducted by the author and his collaborators are provided to illustrate how high resolution satellite imagery

Keywords： high resolution satellite sensor     multispectral imagery     precision agriculture     spatial resolution     temporal    

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Ultrasonic Motor Techniques for 21st Century

Zhao Chunsheng

Strategic Study of CAE 2002, Volume 4, Issue 2,   Pages 86-91

Abstract:

Firstly, a review of the development and applications of the ultrasonic motor techniques since theFinally, the trend of the development of the motor in the 21st century is pointed out.

Keywords： ultrasonic motor     piezoelectric ceramics     friction materials    

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Research on the control systems of a precision linear motor drive device

YAN Han, WANG Xian-kui, DUAN Guang-hong

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 3,   Pages 260-264 doi: 10.1007/s11465-006-0036-9

Abstract: The model of a precision linear motor drive device (PLMDD) and its control requirements are analyzed.

Keywords： feedforward     tracking     ±5     anti-disturbance performance     algorithm    

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Title Author Date Type Operation

Classification of EEG-based single-trial motor imagery tasks using aB-CSP method forBCI

Zhi-chuan TANG, Chao LI, Jian-feng WU, Peng-cheng LIU, Shi-wei CHENG

Journal Article

Linear ultrasonic motor using quadrate plate transducer

Jiamei JIN, Chunsheng ZHAO

Journal Article

Design and analysis of linear oscillating motor for linear pump application-magnetic field, dynamics

Zongxia JIAO,Tianyi WANG,Liang YAN

Journal Article

Cold War Satellite Imagery Gets New Life

Mitch Leslie

Journal Article

modified neural learning algorithm for online rotor resistance estimation in vector controlled induction motor

A. CHITRA,S. HIMAVATHI

Journal Article

Review of human–robot coordination control for rehabilitation based on motor function evaluation

Journal Article

Association of metabolic syndrome with arterial compliance in children and adolescents

ZHANG Li, MI Jie, LI Ming, JIANG Benyu

Journal Article

Catalytic cracking of endothermic fuels in coated tube reactor

LI Jia, ZOU Jijun, ZHANG Xiangwen, GUO Wei, MI Zhentao

Journal Article

Pilot scale autothermal gasification of coconut shell with CO

Bayu PRABOWO,Herri SUSANTO,Kentaro UMEKI,Mi YAN,Kunio YOSHIKAWA

Journal Article

Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid

Nitin Kumar SAXENA,Ashwani Kumar SHARMA

Journal Article

Urban landscape classification using Chinese advanced high-resolution satellite imagery and an object-oriented

Li-gang MA,Jin-song DENG,Huai YANG,Yang HONG,Ke WANG

Journal Article

Remote Sensing and Precision Agriculture Technologies for Crop Disease Detection and Management with a Practical Application Example

Chenghai Yang

Journal Article

High resolution satellite imaging sensors for precision agriculture

Chenghai YANG

Journal Article

Ultrasonic Motor Techniques for 21st Century

Zhao Chunsheng

Journal Article

Research on the control systems of a precision linear motor drive device

YAN Han, WANG Xian-kui, DUAN Guang-hong

Journal Article