High-precision diameter detector and three-dimensional reconstruction method for oil and gas pipelines

Shi, Yan; Hao, Liming; Wang, Yixuan; Yao, Jing; Li, Rui; Feng, Qingsong; Li, Yunhua

doi:10.1016/j.petrol.2018.02.070

Cited by 23 publications

(8 citation statements)

References 11 publications

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“…Equations (3), (8) and (9) can be transformed into the following form by Laplace transform, respectively.…”

Section: Block Diagram and Transfer Function Of The Valve-controlled mentioning

confidence: 99%

“…Pneumatic technology has the advantages of fire prevention, energy saving, high efficiency and no pollution [1][2][3][4]. It has become an important means to realize the automation of production process with the complement of hydraulic, mechanical, electrical and electronic technology [5][6][7][8]. Also, pneumatic servo systems have been widely used in the proportional control and program control systems in some multipipe production processes of automobile production lines, as well as the metallurgy and chemical industries [9].…”

Section: Introductionmentioning

confidence: 99%

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Evolutionary Algorithm-Based Friction Feedforward Compensation for a Pneumatic Rotary Actuator Servo System

Zhang

Wei

et al. 2018

Applied Sciences

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The friction interference in the pneumatic rotary actuator is the primary factor affecting the position accuracy of a pneumatic rotary actuator servo system. The paper proposes an evolutionary algorithm-based friction-forward compensation control architecture for improving position accuracy. Firstly, the basic equations of the valve-controlled actuator are derived and linearized in the middle position, and the transfer function of the system is further obtained. Then, the evolutionary algorithm-based friction feedforward compensation control architecture is structured, including that the evolutionary algorithm is used to optimize the controller coefficients and identify the friction parameters. Finally, the contrast experiments of four control strategies (the traditional PD control, the PD control with friction feedforward compensation without evolutionary algorithm tuning, the PD control with friction feedforward compensation based on the differential evolution algorithm, and the PD control with friction feedforward compensation based on the genetic algorithm) are carried out on the experimental platform. The experimental results reveal that the evolutionary algorithm-based friction feedforward compensation greatly improves the position tracking accuracy and positioning accuracy, and that the differential evolution-based case achieves better accuracy. Also, the system with the friction feedforward compensation still maintains high accuracy and strong stability in the case of load.

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“…Equations (3), (8) and (9) can be transformed into the following form by Laplace transform, respectively.…”

Section: Block Diagram and Transfer Function Of The Valve-controlled mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evolutionary Algorithm-Based Friction Feedforward Compensation for a Pneumatic Rotary Actuator Servo System

Zhang

Wei

et al. 2018

Applied Sciences

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show abstract

“…Limited by its hardware structure, the transmission rate is low, so the SPI mode is suitable for tasks with short development cycles and small amounts of storage and transmission data [19][20][21]. In contrast, the SD mode has complex drivers and numerous internal functions, but its transmission rate is fast and its performance is stable, which makes it suitable for projects with a large amount of data storage [22,23]. Therefore, the SD mode is selected for this study for its higher transmission rate.…”

Section: Introductionmentioning

confidence: 99%

A Fast Storage Method for Drone-Borne Passive Microwave Radiation Measurement

Wan

Jiang

et al. 2021

Sensors

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A drone-borne microwave radiometer requires a high sampling frequency and a continuous acquisition capability to detect and mitigate radio frequency interference (RFI), but existing methods cannot store such a large amount of data. In this paper, the dual polling write method (DPSM) for secure digital cards triggered by a timer under a multitask framework based on STM32 MCU is proposed to meet the requirements of continuous data storage. The card programming step was changed from a query waiting structure to a polling query flag bit structure, and time-sharing processing and parallel processing were used to simulate multithreading. The experimental results were as follows: (1) the time consumption of the whole storage procedure was reduced from 4000 microseconds to 200–400 microseconds; (2) the time consumption of the card programming step was reduced from 3000 microseconds in the first block and 1000 microseconds in the second and subsequent blocks to 17–174 microseconds and 18–71 microseconds, respectively, compared with the existing method; (3) the delay in the whole sampling cycle was reduced from 3942 microseconds to 0 microseconds. The results of this paper can meet the data storage requirements of a drone-borne microwave radiometer and be applied to the high-speed storage of other devices.

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“…In 1984, Geck and Patton 17 from Ford Motor Company considered PMS together with a vehicle system, take all factors into consideration, improved the optimization design theory of PMS; in 1993, Bretl 18 believed that the ultimate goal of PMS design optimization is to minimize the body's vibration response; in 2016, Shangguan et al 19 analyzed and optimized the stiffness of the PMS based on a 13 degree-of-freedom model of the vehicle, and the results have been verified. In 2016, Y Shi et al 20,21 built the power system of a new kind of air-powered vehicle using hydropneumatic (HP) transformer as the pneumatic pressure boosting structure and hydraulic motor as the power unit, but it does not take into account the vibration isolation of the suspension system.…”

Section: Introductionmentioning

confidence: 99%

Optimization design of powertrain mounting system considering vibration analysis of multi-excitation

Dong

et al. 2018

Advances in Mechanical Engineering

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The stiffness of mounting system determines the vibration isolation ability of the transmitted path, which is the key factor that affects the vibration and noise of vehicle. In order to improve the vibration isolation ability of the powertrain mounting system, considering the powertrain of front wheel drive car as the research object, the vibration decoupling rate and its corresponding frequency of the powertrain mounting system are analyzed by rigid body dynamics and energy method. The correctness of the calculation program with energy method has been verified by calculated vibration decoupling rate. Based on the genetic algorithm and the fusion robustness analysis, the decoupling rate and modal frequency of the mountings in all directions are considered as the objectives; the stiffness of the three mountings is optimally designed. Through multi-excitation of three methods and vehicle test, the vibration response characteristics and the vibration noise test data of the optimization stiffness are compared and the results shown that the vibration isolation performance has been significantly improved more than 10%. An integrated design method of stiffness optimization design and vibration analysis in vehicle PMS is formed, which has theoretical and practical value, and can reduce vehicle vibration and noise.

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High-precision diameter detector and three-dimensional reconstruction method for oil and gas pipelines

Cited by 23 publications

References 11 publications

Evolutionary Algorithm-Based Friction Feedforward Compensation for a Pneumatic Rotary Actuator Servo System

Evolutionary Algorithm-Based Friction Feedforward Compensation for a Pneumatic Rotary Actuator Servo System

A Fast Storage Method for Drone-Borne Passive Microwave Radiation Measurement

Optimization design of powertrain mounting system considering vibration analysis of multi-excitation

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