Recent Patents on Engineering - Current Issue

BackgroundDue to the difficulty of obtaining the real dataset of paired underwater images, it is urgent to build an unsupervised underwater image enhancement network.ObjectiveTo address the problem, a novel underwater image enhancement based on Retinex decomposition and Unsupervised Generative Adversarial Network (RUGAN) is proposed.MethodsA color correction module is proposed considering the differ Read More

In various specific application domains, electro-hydraulic servo systems are widely adopted due to their high power-to-volume ratio, superior dynamic response performance, and extremely high control accuracy. However, the inevitable presence of nonlinear factors in the system poses a series of challenges for precise mathematical modeling and the design and application of different forms of control strategies. This articl Read More

BackgroundWith the continuous progress of electronic information technology, people have begun to study the combination of electronic information technology and hydraulic technology to achieve more accurate and flexible control. Electro-hydraulic servo technology was thus developed. Much attanetion has been paid to electro-hydraulic servo valve, a key component of electro-hydraulic servo technology.Obje Read More

BackgroundAs the ecological environment deteriorates, manufacturing and construction, as major industries that consume energy and cause environmental degradation, urgently need a new technology that is more efficient and sustainable. 3D printing has become a suitable choice for the manufacturing and construction industries to solve sustainability problems and environmental pollution problems due to its lower ma Read More

Industrial robots are mainly used in metal forming, automotive, and electrical and electronics industries. After decades of unremitting efforts, industrial robots have achieved great success. However, problems such as low safety, weak environmental adaptability, and insufficient human-computer interaction ability of industrial robots have greatly limited the application of industrial robots, and multi-arm collaborative robo Read More

BackgroundWith the continuous progress of technology and the development of shield enterprises, higher requirements are put forward for speed estimation and system stability in the sensorless control system of induction motors in shield machines.MethodsIn order to solve the problems of velocity observation error and sliding mode vibration of the induction motor velocity observation method based on sliding mold observer Read More

BackgroundThe method was proposed to optimize the warpage and volume shrinkage of the blade of a plant protection unmanned aerial vehicle (UAV) during injection molding. The influence of molding defects on the geometric parameters of airfoil was analyzed from two aspects of blade geometry structure and molding process based on blade element theory. This paper focuses on reducing the warpage and volume shrin Read More

Diamond grinding wheels, particularly the advanced single-layer brazed variants, are indispensable for efficiently machining hard materials such as ceramics. Effective dressing is crucial, as it optimizes the wheel's isotropy and rotational accuracy, thereby ensuring precise machining. The selection of dressing tools and the conditions under which they operate significantly influence wheel quality, impacting key factors includ Read More

Deflector plate jet servo valves are mostly used in high-temperature and high-pressure situations, and are widely used in both military and industrial applications. The deflector plate servo valve does not need a winding oil supply pipe, which overcomes the vibration that may occur in the structure. Although the deflector jet tube-type electro-hydraulic servo valve is widely used, its structure is complex, involving a large vol Read More

Primarily, concrete undergoes wide self-desiccation, autogenous shrinkage, and other mechanical properties that may be influenced by inadequate curing methods. Various researchers have explored different materials for self-curing in concrete, including lightweight aggregates, water-retaining admixtures, superplasticizers, polymers, natural fibers, and pozzolanic materials, each with patented formulations capable of withstandi Read More

BackgroundAs the pace of human conquest of space continues to accelerate, the number of spacecraft carrying out various activities in space continues to increase, so that the available orbital space continues to decrease, the amount of space debris continues to increase, and thus the probability of orbiting spacecraft being impacted by space debris is also increasing. Research on the development of protective structur Read More

BackgroundHip suffering is a serious concern for human health, which may be caused by arthritis, accidents, and childhood disorders; hence, man-made joints are the only option for restoring the function of natural hips and ensuring a comfortable life. To design an effective hip joint is a challenging task; there are myriads of novel designs continuously patented over the last two decades.MethodsThe finite element approa Read More

BackgroundIn recent years, observers have been crucial for controlling quadruped crawling robots, especially for feed-forward compensation in complex terrains. However, their tracking performance in continuous convex terrains requires optimization.ObjectiveIn order to improve the mobility of quadruped crawling robots by reducing posture adjustment time in continuous convex terrain, a finite-time observer with inte Read More

Artificial intelligence (AI) has made its own place in the present world. Almost in every field, AI is being utilized for betterment and advancement. Machine learning (ML) is a part of AI and has been applied extensively currently in various fields of science and technology including healthcare system. ML is the technique that uses AI to analyze, interpret and make decisions.To summarize the applications of ML in various healthc Read More

BackgroundLower limb-assisted exoskeleton robots have gained wide attention today because of their practicality, complete functions, and advanced technology.ObjectiveBy analyzing the current research status and key technology classification of lower limb-assisted exoskeleton robots and thinking about the future development direction of lower limb-assisted exoskeleton robots, the feasibility of future development is p Read More