Engineering Review最新文献

An adaptive neuro-fuzzy based on a fractional-order proportional integral derivative design for a two-legged robot with an improved swarm algorithm 基于改进群算法的分数阶比例积分导数神经模糊自适应两足机器人设计

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.1916

Mustafa Wassef, Nizar Hadi

引用次数: 0

Energy dissipation characteristics of an in-chamber longitudinal culvert system with three-layer side ports designed for a large-scale lock with 60m water head 大型水头60m船闸三层侧孔纵向涵洞系统消能特性

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2051

Ming Chen, Xu-shen Zhou, Rengmin Li, Xueyi Li

{"title":"Energy dissipation characteristics of an in-chamber longitudinal culvert system with three-layer side ports designed for a large-scale lock with 60m water head","authors":"Ming Chen, Xu-shen Zhou, Rengmin Li, Xueyi Li","doi":"10.30765/er.2051","DOIUrl":"https://doi.org/10.30765/er.2051","url":null,"abstract":"With the rapid development of the water transportation industry in China, the scale of ships navigating in the inland waterway is increasing. However, the water head formed by dams is very high, especially for the hydroelectric projects constructed in the upper mountain river. Therefore, it is critically urgent to build several high-head and large-scale locks. Moreover, when the water head is increased to 60 m, huge water energy could be generated and then introduced into the corresponding lock chamber if the valve operating time is limited. This paper presented the in-chamber longitudinal culvert system with three-layer side ports to efficiently dissipate the water energy to ensure safe mooring conditions for ships during a lock operation. A three-dimensional CFD model for 1/4 local region of the corresponding chamber was developed to predict its hydraulic behavior. The numerical simulations were conducted to examine the effect of the vertical spacing between side ports on the energy dissipation result. Results showed that good energy dissipation performance was gained when the relative vertical spacing was set B/D=0.25 (B is the vertical spacing between side ports, D is the inner height of the culvert). Furthermore, the energy dissipation mechanism of this arrangement was presented based on the results of a three-dimensional hydraulic characteristic. In addition, the corresponding dissipation result of the present arrangement was compared with those of the single-layer and two-layer side ports. The dissipation performance of the present design was found to be the best if all the side ports’ cross-section area of each arrangement keeps the same.","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69598813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of fuel filter cap of comet diesel engine using structural optimization technique and additive manufacturing 采用结构优化技术和增材制造技术研制comet型柴油机燃油滤清器盖

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2115

Hanmant Shete, V. Chavan

引用次数: 0

Enhancement of the behaviour of reinforced concrete dapped end beams including single-pocket loaded by a vertical concentrated force 增强钢筋混凝土端梁的性能，包括单袋垂直集中力加载

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.1853

Qasim M. Shakir, Sara A. Hamad

{"title":"Enhancement of the behaviour of reinforced concrete dapped end beams including single-pocket loaded by a vertical concentrated force","authors":"Qasim M. Shakir, Sara A. Hamad","doi":"10.30765/er.1853","DOIUrl":"https://doi.org/10.30765/er.1853","url":null,"abstract":"In precast building construction, some beams are designed to support one or several concentrated loads resulting from the reactions of the attached cross beams. Consequently, the pocket beams without or with dapped ends may represent one of the innovative solutions to constitute the joints between the two attached members. In the present research work, the behaviour of dapped end beams that included rectangular opening loaded with in-plane force, have been investigated. Several detailing have been proposed, in addition the vertical stirrups, to improve the strength of the opening region including the use of steel fibre concrete (SFC),Configuration of the inclined crossed bars, jacketing with steel plates and the composite section technique with two arrangements of the reinforcement of the dapped end . Ten specimens have been tested under gradually increased vertical static loading. The tested specimens are categorized into two sets based on the configuration of dapped end reinforcement. Two variable have been considered which are the strengthening configuration of the opening region and the configuration of the dapped end reinforcement. The response has been discussed in terms several indicators including, the cracking and failure loads, maximum deflection, mode of failure, load-deflection curves, crack patterns, crack width, to recognize the optimum strengthening proposal of the opening. Results revealed that using the inclined steel bars (modified arrangement) yield better response than the conventional (standard) reinforcement (vertical stirrups) within the dapped end. For beams with pockets strengthened with crossed inclined bars, failure load enhanced in range of (8.5-11%) whereas the enhancement was in ranged in (8-10%) for the steel SFC method. Moreover, an improvement by about (11-13%) in load capacity increased when the jacketing with steel plates was applied. The maximum improvement was obtained when using the embedded rolled section within the opening with values of (21-23%).","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69598517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Stability analysis of VSC-HVDC system based on new phase-locked-loop less voltage oriented control method 基于新型低锁相环电压定向控制方法的vdc - hvdc系统稳定性分析

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2101

Guessabi Anwar, Gherbi Ahmed, Chebabhi Ali

{"title":"Stability analysis of VSC-HVDC system based on new phase-locked-loop less voltage oriented control method","authors":"Guessabi Anwar, Gherbi Ahmed, Chebabhi Ali","doi":"10.30765/er.2101","DOIUrl":"https://doi.org/10.30765/er.2101","url":null,"abstract":"Voltage Source Converters-based High Voltage Direct Current (VSC-HVDC) systems are generally implemented to transmit power across long distances due to their low cost and flexibility. This paper will discuss a new simple and low-computational-burden phase-locked loop less voltage-oriented control strategy (PLL-less-VOC strategy) for controlling and synchronizing a VSC-HVDC system in a synchronous rotating frame (dq frame). The proposed method is used not only to control the VSC-HVDC but also to obtain the mathematical model of both VSCs-based HVDC systems in the dq frame using the basics of the direct instantaneous power control theory (DPC) without using PLL and Park transformations. The proposed PLL-less-VOC strategy is equivalent to the conventional VOC strategy for steady-state stability, but it has the benefit of both conventional VOC and DPC, better transient stability performance, and low computational burden in the implementation. The experimental tests using STM32F407G microcontroller demonstrate that the proposed control strategy has better dynamic stability under certain exceptional conditions such as step changes on DC-link voltage change, powers change, and three-phase fault.","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69598994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure investigation of cast irons with nodular and flake graphite via nanoindentation 用纳米压痕法研究球墨和片状石墨铸铁的显微组织

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.1861

Peter Petruš, Igor Barényi, Jozef Majerík

引用次数: 0

Contact analysis of heavy-duty apron feeder with clearance 带间隙的重型胶圈给料机接触分析

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2229

Jiahui Peng, Xiangwen Cheng, Jia Wang, Lichun Xiao

{"title":"Contact analysis of heavy-duty apron feeder with clearance","authors":"Jiahui Peng, Xiangwen Cheng, Jia Wang, Lichun Xiao","doi":"10.30765/er.2229","DOIUrl":"https://doi.org/10.30765/er.2229","url":null,"abstract":"The problem of clearance contact between the bearing plate and the supporting guide rail is studied when the heavy‐duty Apron Feeder is subjected to impact load. Based on the energy method, the impact force of the falling ore was calculated, and the nonlinear contact finite element analysis of the structure with clearance was performed using ANSYS Workbench. The results show that at the first moment of contact, the initial contact shape is an approximately linear contact, and then a deformation occurs near the contact line, which quickly evolves from a linear contact to a surface contact. The contact stress distribution is diffused outward along the initial contact boundary and gradually decreases, and the stress concentration occurs at the contact boundary. When the distance is different, the shape of the contact area is similar, but when the distance is large, the contact area is small and the stress distribution is more concentrated. The nonlinear contact calculation of the skirt feeder reveals the instantaneous contact process of the plate rail under the impact force and determines the influence of the distance size on the contact properties, which provides a theoretical basis for the selection of the distance value.","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135400224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Proper maintenance way for the multifunctional windows 正确的多功能窗维护方法

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2008

Amal Shamseldin

引用次数: 0

Thermal performance improvement of artificially roughened solar air heater 人工粗化太阳能空气加热器的热性能改善

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2036

N. M. Bader, K. S. Mushatet

{"title":"Thermal performance improvement of artificially roughened solar air heater","authors":"N. M. Bader, K. S. Mushatet","doi":"10.30765/er.2036","DOIUrl":"https://doi.org/10.30765/er.2036","url":null,"abstract":"Solar air heaters are useful because they can lessen the need for fossil fuel–powered electricity, thereby lowering emissions and cutting down on energy costs. Experiments were conducted to inspect the thermal performance of a solar air heater with combined ribs and delta-winglet in a single-pass solar air heater. The present goal was boost the thermal performance of a solar air collector. A constant relative roughness height ratio of 0.6 was used to organize eight delta-winglets and seven rectangular ribs on the absorber duct's bottom surface. The attack angles for both winglets and ribs were maintained at 60° and 90°, respectively. The winglet vortex generators were set in a common flow-down configuration with a pitch ratio of 10. This experimental investigation was performed at a mass flow rate of 0.022 kg/s with typical ranges of solar irradiance from 330 W/m2 to 850 W/m2. Results show that the useful energy and thermal efficiency were enhanced by 19.2% and 21.2%, respectively, at maximum solar irradiance compared to a smooth duct. The considered compound ribs and vortex generators affect the temperature of the outlet air, resulting in a considerable improvement in the heat transfer convective rate.","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69598763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Hybrid sensorless control of PMSM in full speed range using HFI and back-EMF 利用HFI和反电动势在全速范围内混合无传感器控制永磁同步电机

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2103

S. Medjmadj

{"title":"Hybrid sensorless control of PMSM in full speed range using HFI and back-EMF","authors":"S. Medjmadj","doi":"10.30765/er.2103","DOIUrl":"https://doi.org/10.30765/er.2103","url":null,"abstract":"The permanent magnet synchronous motors (PMSM) are more and more used because of their high performance compared with other AC motors. The present paper proposes a hybrid controller which consists of a high frequency injection estimator and a back-electromotive-force observer in full speed range for the sensorless control of PMSM. The aim objective of the study to prevent speed overshot in startup time of the motor and provides a better dynamic response in transient and permanent states using this structure. A hybrid algorithm is applied to realize a smooth transition from low to high speed. At standstill and very low speed region, HF injection technique is used to detect the rotor initial position. In this first step study, the position estimation is derived from a HF current injection by using only one filter. When the rotor speed goes up to a certain value where back-EMF can provide adequate information, a back-EMF observer will dominate. Thanks to this structure, the mechanical sensor can be engaged using the best estimates and the developed control method is fast, simple, and flexible. The effectiveness, superiority, and performance of the proposed control method and extensive simulation results are provided on a 1 kW permanent magnet synchronous motor drive, demonstrating the expected performances.","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69599052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0