Prediction of Mass Flow Rate in Pneumatic Conveying Using a System Identification Modeling Approach

Sæther, Arild; Arakaki, Cecilia; Ratnayake, Chandana; Ruscio, David Di

doi:10.1080/02726350902991007

Cited by 5 publications

(6 citation statements)

References 11 publications

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“…It can be seen that the clusters of the sample points shifted to the right as the opening angle of the guide vane increased, which is consistent with the performance maps of variable speed blowers generated at different rotational speeds. 24,25) The GVOs do not change substantially over the 10-second intervals and are only recorded with an accuracy rounded to the nearest 0.5%, and so the GVOs typically transition to a value within 1.5% of their current value. The two-hour record of the GVOs from our monitoring system is shown in Fig.…”

Section: Analysis Of the Influence Of Gvo Variationsmentioning

confidence: 99%

Guide Vane Opening Prediction for Constant Speed Axial Blowers in Blast Furnace Ironmaking with Variation Information

et al. 2021

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Determining appropriate guide vane openings (GVOs) of axial blowers under varying industrial conditions is vital for smooth operations in blast furnace ironmaking. This work analyses the influence GVO variations have on outlet air flow rate and pressure by using data taken from operating, industrial blast furnaces, based on which a support vector machine (SVM)-based GVO prediction model is developed. Outcomes reveal that the change status of GVOs, i.e., whether the GVO angle increases or decreases, is critical in determining the relationship between air flow and pressure. By introducing the change status and removing the transition outliers, predictions for the optimal GVOs required to meet the desired air flow rate and pressure in real time can be more accurately determined. The measured values of GVOs range from 0% to 100%, and the SVM-based model developed in this work predicted the GVOs with an RMSE of 0.2480%, significantly improving upon the baseline model which had an RMSE of 0.6047%. The resulting method can provide insights into the operation of complex ironmaking processes, enabling a more efficient adjustment of GVOs.

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Section: Analysis Of the Influence Of Gvo Variationsmentioning

confidence: 99%

Guide Vane Opening Prediction for Constant Speed Axial Blowers in Blast Furnace Ironmaking with Variation Information

et al. 2021

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“…At present, in pharmaceutical, medical devices, electrical, automotive, and other industries, air tightness detectors are used to detect the air tightness of bottles, cans, and tubes. Air tightness detection is very important not only in pneumatic servo control system [1] but also in other pneumatic fields, such as pneumatic transmission [2][3][4], geological detection [5], pneumatic spring, and semiconductor manufacturing process [6], even the on-orbit operation of spacecraft is very important [7].…”

Section: Introductionmentioning

confidence: 99%

Analysis on Influence Factors of Differential Pressure Detection of Gas Leakage

et al. 2022

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Pneumatic technology takes compressed gas as the power source, but the leakage of gas in the pipeline due to poor sealing or pipeline rupture affects the accuracy of pneumatic control, the flow of gas transmission, and even the emission of harmful gas. The air tightness of differential pressure method has broad significance in the study of tight leakage because of its simple operation, short detection time, and high precision. Bubbling method, acoustic emission detection method, and direct pressure detection method have the characteristics of difficult operation, environmental sensitivity and low detection accuracy. They are not suitable for effective and high-precision detection of leakage in harsh environment. The air tightness detection method of differential pressure method has the advantages of simple operation, short detection time, and high accuracy. It has extensive significance in the research of air tightness leakage. At present, the focus of differential pressure method is to keep the same charging state of the master tank and the tested tank. However, when the shape of the tested tank is irregular or difficult to copy, the influence of different master tank on differential pressure method leakage detection needs to be considered. In this study, a gas leakage flow calculation model is established. The influence of the inherent parameters of the master tank on the calculation of the pressure difference, temperature difference, and leakage between the two cavities is analyzed in the simulation. Finally, the master tank is set as a quasi-isothermal cavity, and the tested tank is set as 3 L and 5 L air tanks for leakage test. The maximum error of experiment of 3 L tank reaches 39 mL/min at the later stage of measurement, with a detection deviation of 14.4%. The maximum error of experiment of 5 L tank is 412.4 mL/min, with a deviation rate of 28.3%. This method can detect leakage with high precision in harsh environment.

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“…The flow characteristic reflecting the relationship between pressure and flow is the most important parameter of pneumatic components. Pneumatic flow detection is widely used in the mass flow feedback of pneumatic servo control [1] and in pneumatic transportation [2][3][4]. Specific application scenarios include the pneumatic muscle, pneumatic spring, and air floating vibration isolation platform.…”

Section: Introductionmentioning

confidence: 99%

Gas Flow Measurement Method with Temperature Compensation for a Quasi-Isothermal Cavity

et al. 2022

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Pneumatic transmission is a technology that uses compressed air as a power source to drive and control various mechanical equipment to realize the mechanization and automation of production processes. With the development of industrial mechanization and automation, pneumatic technology, represented by pneumatic muscle, is increasingly becoming more widely used in various fields. The current standards for research are more complex for the measurement of flow without a flowmeter, some of them do not consider the influence of temperature change on flow measurement, and some of them are simplified as adiabatic or isothermal models, which are inaccurate measurement methods in actual practical application. This paper describes a method to determine flow rate by measuring the pressure change in the process of gas tank inflation. This study used the method of temperature compensation to eliminate the influence of temperature in the isothermal formula. The measurement structure was simple and the calculation was accurate, which has a certain practical significance. Based on this method, charging experiments were carried out with a gas tank that had a volume of 3 L or 5 L with or without copper wire filling, and the experimental results were used in the processed research. The temperature compensation parameters were identified with or without an isothermal environment and in different sizes of tanks. This method identified the different parameters of the 5 L tank and 3 L tank. Finally, the flow compensation was completed for the gas tank filled with copper wire. After verification, the results of the quasi-isothermal calculation formula and temperature compensation formula were close to those measured by a high-precision flow sensor in the experiment. The method introduced in this study is a novel flow calculation method that is simple in structure and accurate in calculation compared with the conventional isothermal calculation method; furthermore, it can be used in real world situations without the need for a high-precision flow sensor.

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Prediction of Mass Flow Rate in Pneumatic Conveying Using a System Identification Modeling Approach

Cited by 5 publications

References 11 publications

Guide Vane Opening Prediction for Constant Speed Axial Blowers in Blast Furnace Ironmaking with Variation Information

Guide Vane Opening Prediction for Constant Speed Axial Blowers in Blast Furnace Ironmaking with Variation Information

Analysis on Influence Factors of Differential Pressure Detection of Gas Leakage

Gas Flow Measurement Method with Temperature Compensation for a Quasi-Isothermal Cavity

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