Research on Control Power and Self-Sensing Technology for GMM Self-Sensing Actuator

2010 ◽  
Vol 34-35 ◽  
pp. 1314-1318
Author(s):  
Xin Hua Wang ◽  
Shou Qiang Hu ◽  
Qian Yi Ya ◽  
Shu Wen Sun ◽  
Xiu Xia Cao
Keyword(s):  
Real Time ◽  
High Speed ◽  
Dynamic Balance ◽  
The Self ◽  
Time Dynamic ◽  
Scheme Design ◽  
Control Power ◽  
Sensing Technology ◽  
The Cost ◽  
Micro Controller Unit

Structure and principle of a new kind of diphase opposition giant magnetostrictive self-sensing actuator (SSA for short) is introduced, for which a kind of double outputs high-precision NC stable voltage power is designed. With the method of combining with the hardware design and the software setting, the controllability and reliability of the actuator are greatly improved. And the whole design becomes more reasonable, which saves the cost and improves the practicability. In addition, based on the micro controller unit (MCU) with high-speed control, the scheme design of the real-time separation circuit for dynamic balance signal can effectively identify out and pick up the self-sensing signal which changes from foreign pressure feed back. Then the SSA real-time, dynamic and accurately control is realized. The experiment results show that the voltage power can high-speed and accurately output both output voltages with high current, and that the self-sensing signal decoupling circuit can isolate the self-sensing signals without distortion

A Network Implementation of Real-Time Dynamic Simulation With Interactive Animated Graphics

1988 ◽  
Author(s):  
M. W. Dubetz ◽  
J. G. Kuhl ◽  
E. J. Haug
Keyword(s):  
Real Time ◽  
Dynamic Simulation ◽  
High Speed ◽  
Dynamic Performance ◽  
Data Communication ◽  
Computing System ◽  
Data Sets ◽  
Parallel Processor ◽  
Network Computing ◽  
Time Dynamic

Abstract This paper presents a network based implementation of real-time dynamic simulation methods. An interactive animated graphics environment is presented that permits the engineer to view high quality animated graphics rendering of dynamic performance, to interact with the simulation, and to study the effects of design variations, while the simulation is being carried out. An industry standard network computing system is employed to interface the parallel processor that carries out the dynamic simulation and a high speed graphics processor that creates and displays animated graphics. Multi-windowing and graphics processing methods that are employed to provide visualization and operator control of the simulation are presented. A vehicle dynamics application is used to illustrate the methods developed and to analyze communication bandwidth requirements for implementation with a compute server that is remote from the graphics workstation. It is shown that, while massive data sets are generated on the parallel processor during realtime dynamic simulation and extensive graphics data are generated on the workstation during rendering and display, data communication requirements between the compute server and the workstation are well within the capability of existing networks.

scholarly journals A Real-Time Health Monitoring System for Remote Cardiac Patients Using Smartphone and Wearable Sensors

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Priyanka Kakria ◽  
N. K. Tripathi ◽  
Peerapong Kitipawang
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Health Monitoring ◽  
Data Security ◽  
High Speed ◽  
Low Cost ◽  
Wearable Sensors ◽  
Healthcare Services ◽  
Cardiac Patients ◽  
The Cost

Online telemedicine systems are useful due to the possibility of timely and efficient healthcare services. These systems are based on advanced wireless and wearable sensor technologies. The rapid growth in technology has remarkably enhanced the scope of remote health monitoring systems. In this paper, a real-time heart monitoring system is developed considering the cost, ease of application, accuracy, and data security. The system is conceptualized to provide an interface between the doctor and the patients for two-way communication. The main purpose of this study is to facilitate the remote cardiac patients in getting latest healthcare services which might not be possible otherwise due to low doctor-to-patient ratio. The developed monitoring system is then evaluated for 40 individuals (aged between 18 and 66 years) using wearable sensors while holding an Android device (i.e., smartphone under supervision of the experts). The performance analysis shows that the proposed system is reliable and helpful due to high speed. The analyses showed that the proposed system is convenient and reliable and ensures data security at low cost. In addition, the developed system is equipped to generate warning messages to the doctor and patient under critical circumstances.

scholarly journals A High-Speed Demodulation Technology of Fiber Optic Extrinsic Fabry-Perot Interferometric Sensor Based on Coarse Spectrum

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6609
Author(s):  
Peng Zhang ◽  
Ying Wang ◽  
Yuru Chen ◽  
Xiaohua Lei ◽  
Yi Qi ◽  
...  
Keyword(s):  
Real Time ◽  
High Speed ◽  
Cavity Length ◽  
Fiber Optic ◽  
Likelihood Estimation ◽  
Time Dynamic ◽  
Wavelength Division ◽  
Broadband Spectrum ◽  
Fabry Perot ◽  
Interferometric Sensor

A fast real-time demodulation method based on the coarsely sampled spectrum is proposed for transient signals of fiber optic extrinsic Fabry-Perot interferometers (EFPI) sensors. The feasibility of phase demodulation using a coarse spectrum is theoretically analyzed. Based on the coarse spectrum, fast Fourier transform (FFT) algorithm is used to roughly estimate the cavity length. According to the rough estimation, the maximum likelihood estimation (MLE) algorithm is applied to calculate the cavity length accurately. The dense wavelength division multiplexer (DWDM) is used to split the broadband spectrum into the coarse spectrum, and the high-speed synchronous ADC collects the spectrum. The experimental results show that the system can achieve a real-time dynamic demodulation speed of 50 kHz, a static measurement root mean square error (RMSE) of 0.184 nm, and a maximum absolute and relative error distribution of 15 nm and 0.005% of the measurement cavity length compared with optical spectrum analyzers (OSA).

Real-Time Target Tracking Based on SOPC

2012 ◽  
Vol 433-440 ◽  
pp. 7035-7041
Author(s):  
Zhong Li ◽  
Jian Guo Mao ◽  
Xue Wang Wu ◽  
Wen Yu Lu ◽  
Guang Min Lu
Keyword(s):  
Target Tracking ◽  
Real Time ◽  
High Speed ◽  
Mean Shift ◽  
Electronic System ◽  
Description Language ◽  
The Real ◽  
Dsp Builder ◽  
Hardware Description ◽  
The Cost

The Mean Shift is an algorithm which is a non-parametric probability density gradient estimation. It can be widely applied to the moving target tracking. This paper presents a target tracking method of mean shift based on SOPC. Through designing the parallel algorithm of the system, to take into account the cost of FPGA hardware and complexity of the model, we improve the real-time of the target tracking. Meanwhile, through modeling based on DSP Builder, instead of preparing FPGA hardware description language code, we reduce system designing complexity and improve the designing efficiency of the electronic system . The results show that the real-time of the target tracking is proportional to the Parallelism of design, and the system can meet with the real-time of high-speed visual tracking.

scholarly journals High-speed optical 3D sensing and its applications

2016 ◽  
Vol 5 (5-6) ◽  
Author(s):  
Yoshihiro Watanabe
Keyword(s):  
Real Time ◽  
Surface Reconstruction ◽  
High Speed ◽  
User Interaction ◽  
Real Time Systems ◽  
Depth Images ◽  
Sensing Technology ◽  
3D Sensing ◽  
3D User Interaction ◽  
Time Systems

AbstractThis paper reviews high-speed optical 3D sensing technologies for obtaining the 3D shape of a target using a camera. The focusing speed is from 100 to 1000 fps, exceeding normal camera frame rates, which are typically 30 fps. In particular, contactless, active, and real-time systems are introduced. Also, three example applications of this type of sensing technology are introduced, including surface reconstruction from time-sequential depth images, high-speed 3D user interaction, and high-speed digital archiving.

Workstation-Based Man-in-the-Loop Simulation for Multibody Systems

1990 ◽  
Author(s):  
J. L. Chang ◽  
S. S. Kim
Keyword(s):  
Real Time ◽  
Dynamic Simulation ◽  
High Speed ◽  
Visual Cues ◽  
Parallel Computer ◽  
Hydraulic Systems ◽  
Recursive Formulation ◽  
Time Dynamic ◽  
Time Dynamics ◽  
Operator Interface

Abstract This paper presents a general approach to achieving real-time man-in-the-loop simulation for multibody dynamic systems. Emerging real-time dynamic simulation methods are used to demonstrate the potential for creating interactive design workstations with a human operator in the control loop. The recursive formulation of multibody system dynamics with relative coordinates is employed for efficient numerical analysis and implementation on parallel computer. A workstation-based simulator is developed by integrating the real-time dynamics program, a realistic graphics display, and the operator’s control interface. High speed computer graphics techniques are employed to create realistic visual cues for the simulator. Real-time man-in-the-loop simulation is analyzed, as regards the goal of real clock time, not only with respect to dynamic simulation but also with respect to graphics display and the operator interface. Synchronization of the simulation is found to be most important for realism of the simulator. A backhoe simulation is implemented to demonstrate the capability for man-in-the-loop simulation. The backhoe simulator is developed by modeling backhoe dynamics and hydraulic systems with the recursive formulation to achieve real-time simulation, developing an interactive graphics program for visual cues, and interfacing the operator’s control action with the dynamic simulation through a pair of joysticks.

Parallel Processing for Real-Time Dynamic System Simulation

1990 ◽  
Vol 112 (4) ◽  
pp. 520-528 ◽  
Author(s):  
R. S. Hwang ◽  
D. S. Bae ◽  
J. G. Kuhl ◽  
E. J. Haug
Keyword(s):  
Parallel Processing ◽  
Real Time ◽  
High Speed ◽  
Equations Of Motion ◽  
Companion Paper ◽  
Parallel Computer ◽  
Time Dynamic ◽  
Closed Loop Systems ◽  
Efficiency And Effectiveness ◽  
Generalized Force

A parallel processing algorithm based on the recursive dynamics formulation presented in a companion paper [1] is developed for multiprocessor implementation. Lagrange multipliers associated with cut-joint constraints for closed loop systems are eliminated, resulting in a minimal set of equations of motion. Concurrent generation of the system inertia matrix and the generalized force vector using the algorithm of Ref. 1 is shown to yield finer grain parallelism than earlier recursive algorithms. A new computational structure for dynamic analysis is proposed for high speed parallel processing. Real-time simulation of a vehicle is demonstrated on an eight processor parallel computer to illustrate efficiency and effectiveness of the algorithm, even for interactive operator-in-the-loop simulation.

Advanced Real-Time Powertrain Systems Analysis

1988 ◽  
Vol 110 (3) ◽  
pp. 325-333 ◽  
Author(s):  
B. K. Powell ◽  
G. P. Lawson ◽  
G. Hogh
Keyword(s):  
Real Time ◽  
Systems Analysis ◽  
High Speed ◽  
Computer Control ◽  
Fuel Injector ◽  
Time Dynamic ◽  
Automotive Engine ◽  
Engine Control System ◽  
High Data ◽  
Data Rates

This paper describes a combined analytical and experimental hardware-in-the-loop powertrain systems analysis methodology. Central to the implementation of this methodology is a real-time dynamic system simulation computer such as the high-speed Applied Dynamics Model AD10. For automotive engine control system studies, wide bandwidth in-cylinder combustion pressure sensor signals are input to the AD10 computer. Control commands are calculated and communicated at high data rates to throttle valve, spark ignition, and fuel injector actuators. Both simulation and experimental results are presented. Using this approach, the functional improvements associated with various control philosophies can be determined.

Design of Virtual Oscilloscope Based on S3C2410

2011 ◽  
Vol 189-193 ◽  
pp. 227-230
Author(s):  
Shu Lin Shi ◽  
Guo Rui Pi
Keyword(s):  
Embedded System ◽  
Real Time ◽  
High Speed ◽  
Data Exchange ◽  
Control Logic ◽  
Real Time Processing ◽  
High Speed Data ◽  
The Common ◽  
The Embedded System ◽  
The Cost

: This topic has designed a kind of virtual oscilloscope based on the embedded technical. On the hardware the S3C2410+IDT7204 structure were used, on the software real-time operating system uC/OS-II were used in the design of embedded virtual oscilloscope. ARM9 microprocessor's high speed handling ability are fully used, as well as FIFO in the read-write control logic, the superiority in high speed data exchange aspect, realizes the double channel synchronization profile demonstration. the multi-task run and the real-time processing were realized by using on the uC/OS-II operating system's in ARM9 microprocessor transplant. This oscilloscope has the cost lowly, to be possible to as the common oscilloscope, also to be possible to as an intelligent module the merit which used in the embedded system.

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