Browsing by Author Tran, Duc Tan

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  • Accelerated Parallel Magnetic Resonance Imaging with Multi-Channel Chaotic Compressed Sensing.pdf.jpg
  • Article


  • Authors: Tran, Duc Tan (2010)

  • Fast acquisition in magnetic resonance imaging (MRI) is considered in this paper. Often, fast acquisition is achieved using parallel imaging (pMRI) techniques. It has been shown recently that the combination of pMRI and compressed sensing (CS), which enables exact reconstruction of sparse or compressible signals from a small number of random measure- ments, can accelerate the speed of MRI acquisition because the number of measurements are much smaller than that by pMRI per se. Also recently in CS, chaos filters were designed to obtain chaotic measurements. This chaotic CS approach potentially offers simpler hardware implementation. In this ...

  • paper.PDF.jpg
  • Article


  • Authors: Tran, Duc Tan (2012)

  • Inertial navigation, integrated with other navigation aids such as Global Positioning System (GPS), has gained significance in recent years. The integrated navigation system can be used to determine attitude, velocity and position of the moving objects. This paper presents an approach to designing an INS/GPS based navigation system using a combination of an Extended Kalman Filter (EKF) and a Linear Kalman Filter (LKF). These include a first-stage eight-state EKF for the GPS data and a second-stage eight-state LKF for the INS/GPS integration. The advantage of this design is that we can utilize the simplicity of the LKF but keep the high performance of the EKF. Comparison and analysis o...

  • 35.pdf.jpg
  • Article


  • Authors: Pham, Van Tang; Tran, Duc Tan; Chu, Duc Trinh (2016)

  • Thank to strong grow of MicroElectroMechanicalSystem (MEMS) technology, high performance and small size sensors are widely used in many areas such as landslide, navigation, mobile phones, etc. However, there are several kinds of errors are still existing in MEMS based sensors that need a carefully analyzing and calibration. By each year, the performances of commercial sensors are also improved. In this paper, we focused on characterizing the stochastic errors of accelerometers and gyroscopes integrated with a latest smart phone of Apple Inc. Iphone6+. The MP67B is a custom version of the InvenSense 6-Axis device (3-Axis gyroscope and 3-Axis accelerometer) made for Apple. This research...

  • 4215-97-8107-1-10-20171016.pdf.jpg
  • Article


  • Authors: Nguyen, Van Thang; Tran, Duc Tan; Chu, Duc Trinh (2017)

  • This paper presents a design, simulation and analysis of a vibratory micromachining gyroscope. The gyroscope structure is based on the driving and sensing proof-mass configuration. The gyroscope dimensions are 1644 µm wide, 1754 µm long, 30µm thickness. The suspended spring consists of two silicon cantilevers of driving-mode and sensing-mode stiffness are 400 N/m and 165 N/m, respectively. Mass of driving proof-mass (including of 0.9408×10E-11 kg sensing proof-mass) is 0.5452×10E-7 kg. The simulated resonance frequency is 13324 Hz. The output signals are calculated based on the simulated vibration results. The structure is investigated with several input angular signals. The sensitivi...

  • 121.pdf.jpg
  • Article


  • Authors: Luu, Manh Ha; Tran, Duc Tan; Nguyen, Thanh Long; Nguyen, Dinh Duc; Nguyen, Phu Thuy (2006)

  • The demand of navigation and guidance has been urgent for many years. In fact, INS is daily used in controlling flight dynamics. Nowadays, with the strong growth of Micro-Electro-Mechanical-System (MEMS) technology, the Inertial Navigation Systems (INS) is applied widely. However, there are existing errors in the accelerometer and gyroscope signals that cause unacceptable drifts. There are two kinds of noise in the INS: deterministic and stochastic errors. The deterministic noises are usually eliminated by the carefully calibration process but the stochastic noises are always difficult to treat. In this paper, we have determined successfully the characteristics of the ME...

  • proceeding_IDCTA_2012_full.PDF.jpg
  • Article


  • Authors: Tran, Duc Tan (2012)

  • Wireless communication are popular used for commercial, industrial, and domestic networking. Ensuring information quality in indoor environments are difficult but essential for applications that require higher and higher quality such as internet access, telephone, etc. In order to deploy in actual systems with the feasibility and cost savings, electromagnetic simulations must be performed carefully. The simulation of electromagnetic wave propagation in indoor environments may require the use of different wave propagation models. Some factors such as obstructions, materials, antenna installation, etc. will affect the actual results so they need to be put into simulation. This paper pre...

  • 06_NguyenVanThang.pdf.jpg
  • Article


  • Authors: Tran, Duc Tan (2012)

  • During the last decades, MEMS technology has undergone rapid development, leading to the successful fabrication of miniaturized mechanical structures integrated with microelectronic components. Accelerometers and gyroscopes are in great demand for specific applications ranging from guidance and stabilization of spacecraft to research on vibrations of Parkinson patients’ fingers. The demand of navigation and guidance has been urgent for many years. In fact, INS is used daily in flight dynamics control. Nowadays, with the strong growth of Micro-Electro-Mechanical-System (MEMS) technology, the Inertial Navigation Systems are applied widely. However, there are existing errors in the accel...

  • fullpaper_sensor_transducer_2012.pdf.jpg
  • Article


  • Authors: Tran, Duc Tan (2012)

  • In this paper, we focus to design and simulation of a piezoresistive accelerometer using three different soft-wares corresponding to three different levels: system, device, and physical ones. At the system level, MATLAB software was utilized to model a simple mechanical damping system. At the device level, we have used SUGAR/MATLAB to investigate the basic behaviors of 3-DOF accelerometer. Consequently, the ANSYS finite-element software has been used to design and simulate the advance properties of a 3-DOF piezoresistive accelerometer. At this level, we would also perform optimization process for the fabrication step.

Browsing by Author Tran, Duc Tan

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 8 of 8
  • Accelerated Parallel Magnetic Resonance Imaging with Multi-Channel Chaotic Compressed Sensing.pdf.jpg
  • Article


  • Authors: Tran, Duc Tan (2010)

  • Fast acquisition in magnetic resonance imaging (MRI) is considered in this paper. Often, fast acquisition is achieved using parallel imaging (pMRI) techniques. It has been shown recently that the combination of pMRI and compressed sensing (CS), which enables exact reconstruction of sparse or compressible signals from a small number of random measure- ments, can accelerate the speed of MRI acquisition because the number of measurements are much smaller than that by pMRI per se. Also recently in CS, chaos filters were designed to obtain chaotic measurements. This chaotic CS approach potentially offers simpler hardware implementation. In this ...

  • paper.PDF.jpg
  • Article


  • Authors: Tran, Duc Tan (2012)

  • Inertial navigation, integrated with other navigation aids such as Global Positioning System (GPS), has gained significance in recent years. The integrated navigation system can be used to determine attitude, velocity and position of the moving objects. This paper presents an approach to designing an INS/GPS based navigation system using a combination of an Extended Kalman Filter (EKF) and a Linear Kalman Filter (LKF). These include a first-stage eight-state EKF for the GPS data and a second-stage eight-state LKF for the INS/GPS integration. The advantage of this design is that we can utilize the simplicity of the LKF but keep the high performance of the EKF. Comparison and analysis o...

  • 35.pdf.jpg
  • Article


  • Authors: Pham, Van Tang; Tran, Duc Tan; Chu, Duc Trinh (2016)

  • Thank to strong grow of MicroElectroMechanicalSystem (MEMS) technology, high performance and small size sensors are widely used in many areas such as landslide, navigation, mobile phones, etc. However, there are several kinds of errors are still existing in MEMS based sensors that need a carefully analyzing and calibration. By each year, the performances of commercial sensors are also improved. In this paper, we focused on characterizing the stochastic errors of accelerometers and gyroscopes integrated with a latest smart phone of Apple Inc. Iphone6+. The MP67B is a custom version of the InvenSense 6-Axis device (3-Axis gyroscope and 3-Axis accelerometer) made for Apple. This research...

  • 4215-97-8107-1-10-20171016.pdf.jpg
  • Article


  • Authors: Nguyen, Van Thang; Tran, Duc Tan; Chu, Duc Trinh (2017)

  • This paper presents a design, simulation and analysis of a vibratory micromachining gyroscope. The gyroscope structure is based on the driving and sensing proof-mass configuration. The gyroscope dimensions are 1644 µm wide, 1754 µm long, 30µm thickness. The suspended spring consists of two silicon cantilevers of driving-mode and sensing-mode stiffness are 400 N/m and 165 N/m, respectively. Mass of driving proof-mass (including of 0.9408×10E-11 kg sensing proof-mass) is 0.5452×10E-7 kg. The simulated resonance frequency is 13324 Hz. The output signals are calculated based on the simulated vibration results. The structure is investigated with several input angular signals. The sensitivi...

  • 121.pdf.jpg
  • Article


  • Authors: Luu, Manh Ha; Tran, Duc Tan; Nguyen, Thanh Long; Nguyen, Dinh Duc; Nguyen, Phu Thuy (2006)

  • The demand of navigation and guidance has been urgent for many years. In fact, INS is daily used in controlling flight dynamics. Nowadays, with the strong growth of Micro-Electro-Mechanical-System (MEMS) technology, the Inertial Navigation Systems (INS) is applied widely. However, there are existing errors in the accelerometer and gyroscope signals that cause unacceptable drifts. There are two kinds of noise in the INS: deterministic and stochastic errors. The deterministic noises are usually eliminated by the carefully calibration process but the stochastic noises are always difficult to treat. In this paper, we have determined successfully the characteristics of the ME...

  • proceeding_IDCTA_2012_full.PDF.jpg
  • Article


  • Authors: Tran, Duc Tan (2012)

  • Wireless communication are popular used for commercial, industrial, and domestic networking. Ensuring information quality in indoor environments are difficult but essential for applications that require higher and higher quality such as internet access, telephone, etc. In order to deploy in actual systems with the feasibility and cost savings, electromagnetic simulations must be performed carefully. The simulation of electromagnetic wave propagation in indoor environments may require the use of different wave propagation models. Some factors such as obstructions, materials, antenna installation, etc. will affect the actual results so they need to be put into simulation. This paper pre...

  • 06_NguyenVanThang.pdf.jpg
  • Article


  • Authors: Tran, Duc Tan (2012)

  • During the last decades, MEMS technology has undergone rapid development, leading to the successful fabrication of miniaturized mechanical structures integrated with microelectronic components. Accelerometers and gyroscopes are in great demand for specific applications ranging from guidance and stabilization of spacecraft to research on vibrations of Parkinson patients’ fingers. The demand of navigation and guidance has been urgent for many years. In fact, INS is used daily in flight dynamics control. Nowadays, with the strong growth of Micro-Electro-Mechanical-System (MEMS) technology, the Inertial Navigation Systems are applied widely. However, there are existing errors in the accel...

  • fullpaper_sensor_transducer_2012.pdf.jpg
  • Article


  • Authors: Tran, Duc Tan (2012)

  • In this paper, we focus to design and simulation of a piezoresistive accelerometer using three different soft-wares corresponding to three different levels: system, device, and physical ones. At the system level, MATLAB software was utilized to model a simple mechanical damping system. At the device level, we have used SUGAR/MATLAB to investigate the basic behaviors of 3-DOF accelerometer. Consequently, the ANSYS finite-element software has been used to design and simulate the advance properties of a 3-DOF piezoresistive accelerometer. At this level, we would also perform optimization process for the fabrication step.