New Research for Traffic State Identification

2014 ◽  
Vol 571-572 ◽  
pp. 291-294
Author(s):  
Yun Xiang Liu ◽  
Ping Zhu ◽  
Hao Wang ◽  
Xin Xin Yuan
Keyword(s):  
Control System ◽  
Residence Time ◽  
Secondary Development ◽  
Reading And Writing ◽  
Traffic State ◽  
State Identification ◽  
Simulated Experiment ◽  
Time To Build ◽  
New Research ◽  
Electronic Tags

The article proposed a new research. The method may avoid interference of reverse drive vehicle by installing back-to-back reader in section, adopting active electronic tags to expand the scope and accuracy about reading and writing, using the information including the number of electronic tags in scanning section, update ratio, residence time to build the linkage system between control system and vehicle-mounted electronic tags, and cooperating with the signal condition in intersection, to make the discrimination of traffic state, especially the discrimination of congestion state. The method could identify the traffic state effectively, which was verified by simulated experiment through secondary development of VISSIM.

Programming Introduction of Macro-Program Parabola Manufacturing about Numerical Control Lathe

2013 ◽  
Vol 850-851 ◽  
pp. 657-660
Author(s):  
Jin Wei Tu ◽  
Cheng Zhong Huang
Keyword(s):  
Control System ◽  
Numerical Control ◽  
Secondary Development ◽  
Numerical Control System ◽  
Working Ability ◽  
Development Tool ◽  
Program Application ◽  
Programming Process

Technology macro-program application in numerical control is the secondary development tool which numerical control system manufacturers supported to the customers. It is the highest manual approach of numerically controlled lathe programming. This article introduces the programming process of macro-program parabola machining. Through practicing and researching the key functionality of the macro-program parabola machining, we can effective and reasonable master this ability and greatly increase the working ability of numerical control lathe.

scholarly journals Research on Traffic Acoustic Event Detection Algorithm Based on Sparse Autoencoder

2020 ◽  
Vol 308 ◽  
pp. 05002
Author(s):  
Xiaodan Zhang ◽  
Yongsheng Chen ◽  
Guichen Tang
Keyword(s):  
Feature Vector ◽  
Road Traffic ◽  
Intelligent Transportation ◽  
Research Direction ◽  
Traffic Monitoring ◽  
Detection Algorithm ◽  
Acoustic Event ◽  
Traffic State ◽  
Sparse Autoencoder ◽  
New Research

Road traffic monitoring is very important for intelligent transportation. The detection of traffic state based on acoustic information is a new research direction. A vehicles acoustic event classification algorithm based on sparse autoencoder is proposed to analysis the traffic state. Firstly, the multidimensional Mel-cepstrum features and energy features are extracted to form a feature vector of 125 features; Secondly, based on the computed features, the five-layers autoencoder is trained. Finally, vehicle audio samples are collected and the trained autoencoder is tested. The experimental results show that detection rate of the traffic acoustic event reaches 94.9%, which is 12.3% higher than that of the traditional Convolutional Neural Networks (CNN) algorithm.

Study on Elevator Manufacturing Industry with Modeling and Simulation of Virtual Elevator Control System Based on TwinCAT Soft-PLC

2013 ◽  
Vol 675 ◽  
pp. 51-54 ◽  
Author(s):  
Yong Xi ◽  
Cheng Zhi Yang ◽  
Jin Xing Xu
Keyword(s):  
Control System ◽  
Modeling And Simulation ◽  
Research Method ◽  
Manufacturing Industry ◽  
Research Work ◽  
Simulation System ◽  
Soft Plc ◽  
Virtual System ◽  
New Research ◽  
Controlled Object

A solution is proposed to design and build virtual elevator model by software for the elevator manufacturing industry, which realize the communication between virtual elevator model and TwinCAT soft-PLC. To test the correctness of this approach, the ten layer virtual elevator model is simulated through TwinCAT soft-PLC. And the usability of simulation system and the reasonableness of control programming method are verified. The main characteristic in this new research method is to use virtual controlled object and virtual PLC. It means that all research work can be finished with full virtual system and its research results can be used well in elevator manufacturing industry.

Research on the Pumping Unit Model Driven by Linear Motor

2011 ◽  
Vol 383-390 ◽  
pp. 1399-1405
Author(s):  
Wen Zhong Ma ◽  
Jin Yan Sun ◽  
Hong Mei Zhang ◽  
De Bao Tian ◽  
Hong Fei Pang
Keyword(s):  
Control System ◽  
Control Method ◽  
Linear Motor ◽  
Oil Field ◽  
Field Equipment ◽  
Model Driven ◽  
Response Characteristics ◽  
Pumping Unit ◽  
Source Paper ◽  
New Research

With superior performances, Linear motor driven pumping unit becomes the electrical control of the focus and emphasis of the recent oil field equipment. Against the beam pumping unit motor efficiency, low power factor and stoke that difficult to regulate, this paper proposes new research programs about energy-saving line pumping systems by linear motor driven source. Paper Studys the mechanical model of linear motor in detail, using MATLAB / SIMULINK, a simulation model is analyzed. At the base of vector control of revolving induction motor, we established the linear motor control system. Theoretical analysis and computer simulation results show that the speed control system has good performance, response characteristics of the electromagnetic force, and demonstrate the proposed mathematical model and control method.

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