Signal Time-Delay Tolerance in Teleoperated Vehicles

2021 ◽  
Author(s):  
Eiji Nakamura
Keyword(s):  
Time Delay ◽  
Delay Tolerance ◽  
Signal Time

Calibration of ultrasound tester delay time by cutting a wooden beam

2020 ◽  
Vol 110 ◽  
pp. 131-139
Author(s):  
Zbigniew Karwat
Keyword(s):  
Time Delay ◽  
Ultrasonic Wave ◽  
Independent Method ◽  
Measured Signal ◽  
Test Results ◽  
Measuring Device ◽  
Reliable Test ◽  
Metal Disc ◽  
Standard Calibration ◽  
Signal Time

Obtaining precise and reliable test results requires specific tools on one hand, and at the same time, reliability of the results should not be questioned. One of the necessary steps to achieve this goal is the calibration of the measuring device before the test. This article describes an experiment involving calibration of the device by an independent method called cutting beam calibration carried out on the ultrasonic material tester UMT 01. The standard calibration of this device is carried out by using a dedicated metal disc as a template. Calibration of the tester consisted of determining the time delay of the measured signal. The obtained results were used to prepare charts and to determine of signal time delay, called correction, which also allowed determining the velocity of ultrasonic wave in the tested material in three ways. The experiment was conducted on samples of three species of wood: Norway spruce, Scots pine and sycamore. The velocity of ultrasonic wave from research was compared with literature data.

scholarly journals Adaptive Wide-Area Damping Control Scheme for Smart Grids with Consideration of Signal Time Delay

Energies ◽  
2013 ◽  
Vol 6 (9) ◽  
pp. 4841-4858 ◽  
Author(s):  
Guowei Cai ◽  
Deyou Yang ◽  
Cheng Liu
Keyword(s):  
Time Delay ◽  
Smart Grids ◽  
Wide Area ◽  
Damping Control ◽  
Control Scheme ◽  
Signal Time

scholarly journals Stability and Time Delay Tolerance Analysis Approach for Networked Control Systems

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Ashraf F. Khalil ◽  
Jihong Wang
Keyword(s):  
Control System ◽  
Time Delay ◽  
Control Systems ◽  
Networked Control Systems ◽  
Networked Control System ◽  
Networked Control ◽  
Finite Difference Approximation ◽  
System Stability ◽  
Delay Tolerance ◽  
Maximum Time

Networked control system is a research area where the theory is behind practice. Closing the feedback loop through shared network induces time delay and some of the data could be lost. So the network induced time delay and data loss are inevitable in networked control Systems. The time delay may degrade the performance of control systems or even worse lead to system instability. Once the structure of a networked control system is confirmed, it is essential to identify the maximum time delay allowed for maintaining the system stability which, in turn, is also associated with the process of controller design. Some studies reported methods for estimating the maximum time delay allowed for maintaining system stability; however, most of the reported methods are normally overcomplicated for practical applications. A method based on the finite difference approximation is proposed in this paper for estimating the maximum time delay tolerance, which has a simple structure and is easy to apply.

scholarly journals Seismic coherence in the presence of signal time-delay fluctuations

2018 ◽  
Vol 40 (2) ◽  
pp. 30-47
Author(s):  
Yu. K. Tyapkin ◽  
I. V. Mendrii ◽  
O. Yu. Shchegolikhin ◽  
O. M. Tiapkina
Keyword(s):  
Time Delay ◽  
Signal Time

Coated Tactile Sensor Using Signal Time Delay Phenomenon

Impact ◽  
2019 ◽  
Vol 2019 (10) ◽  
pp. 79-81
Author(s):  
Takayuki Takahashi
Keyword(s):  
Time Delay ◽  
Three Dimensional ◽  
Tactile Sensor ◽  
Systems Science ◽  
Physical Interaction ◽  
Tactile Sensors ◽  
Different Types ◽  
Delay Phenomenon ◽  
Signal Time

Tactile sensors measure information arising from the sensor's physical interaction with its environment. There are different types, including force/torque, dynamic and thermal. Many devices require sensors to detect contact with the outside world, much like robots. Dr Takayuki Takahashi is a researcher based in the Department of Symbiotic Systems Science, Fukushima University, Japan. He and his team have developed a tactile sensor that can be sprayed over three-dimensional shapes, called the Spray Coated Tactile Sensor (ScoTacS).

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