The study of improving ultrasonic ranging accuracy based on the double closed-loop control technology

2017 ◽  
Author(s):  
Yu Jiang ◽  
Mingting Yuan
Keyword(s):  
Closed Loop ◽  
Closed Loop Control ◽  
Control Technology ◽  
Loop Control ◽  
Ultrasonic Ranging

scholarly journals Pumping wells super flexible closed-loop control technology research and testing applications

2020 ◽  
Vol 1654 ◽  
pp. 012012
Author(s):  
Zhang Shengli ◽  
Wang Fang ◽  
Yang Song ◽  
Chang Penggang ◽  
Wei Siqi ◽  
...  
Keyword(s):  
Closed Loop ◽  
Closed Loop Control ◽  
Control Technology ◽  
Technology Research ◽  
Loop Control ◽  
Pumping Wells

Research on Airbags Overturning Device due to the PID Closed-Loop Control Technology

2013 ◽  
Vol 313-314 ◽  
pp. 395-398
Author(s):  
De Qiang Zhang ◽  
Li Ying Su ◽  
Duo Xing Zhao
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Pressure Sensors ◽  
Pressure Control ◽  
Closed Loop Control ◽  
Control Technology ◽  
Real Time Control ◽  
Loop Control ◽  
Time Control ◽  
Pressure Control System

Based on S7-200 PLC, pressure sensors and amplifiers, this paper uses PID instruction to establish the closed-loop pressure control system of the required thrust in turning airbags. So in the automatic overturning airbags, it is capable to real-time control the push rods running status.

scholarly journals Improvement of Ultrasonic Distance Measuring System

2018 ◽  
Vol 17 ◽  
pp. 02008
Author(s):  
Yu Jiang ◽  
Rui Song ◽  
Mingting Yuan
Keyword(s):  
Measurement Accuracy ◽  
Closed Loop ◽  
Measuring System ◽  
Closed Loop Control ◽  
Single Chip ◽  
Loop Control ◽  
Ultrasonic Ranging ◽  
Ultrasonic Propagation ◽  
Hardware Circuit ◽  
Distance Measuring

This paper mainly introduces a kind of ultrasonic distance measuring system with AT89C51 single chip as the core component. The paper expounds the principle of ultrasonic sensor and ultrasonic ranging, hardware circuit and software program, and the results of experiment and analysis.The hardware circuit based on SCM, the software design adopts the advanced microcontroller programming language.The amplitude of the received signal and the time of ultrasonic propagation are regulated by closed loop control. [1,2]The double closed loop control technology for amplitude and time improves the measuring accuracy of the instrument. The experimental results show that greatly improves the measurement accuracy of the system.

The Impact of Visual Feedback Type on the Mastery of Visuo-Motor Transformations

2012 ◽  
Vol 220 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Sandra Sülzenbrück
Keyword(s):  
Empirical Research ◽  
Visual Feedback ◽  
Closed Loop ◽  
Motor Planning ◽  
Visual Input ◽  
Closed Loop Control ◽  
Loop Control ◽  
Feedback Type ◽  
Effective Use ◽  
The Impact

For the effective use of modern tools, the inherent visuo-motor transformation needs to be mastered. The successful adjustment to and learning of these transformations crucially depends on practice conditions, particularly on the type of visual feedback during practice. Here, a review about empirical research exploring the influence of continuous and terminal visual feedback during practice on the mastery of visuo-motor transformations is provided. Two studies investigating the impact of the type of visual feedback on either direction-dependent visuo-motor gains or the complex visuo-motor transformation of a virtual two-sided lever are presented in more detail. The findings of these studies indicate that the continuous availability of visual feedback supports performance when closed-loop control is possible, but impairs performance when visual input is no longer available. Different approaches to explain these performance differences due to the type of visual feedback during practice are considered. For example, these differences could reflect a process of re-optimization of motor planning in a novel environment or represent effects of the specificity of practice. Furthermore, differences in the allocation of attention during movements with terminal and continuous visual feedback could account for the observed differences.

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