Recent Patents on Engineering - Volume 18, Issue 1, 2024

Privacy leakage that occurs when many IoT devices are utilized for training centralized models, a new distributed learning framework known as federated learning was created, where devices train models together while keeping their private datasets local. In a federated learning setup, a central aggregator coordinates the efforts of several clients working together to solve machine learning issues. The privacy of each devi Read More

Early detection and treatment of breast cancer are very necessary, and effective classification of breast tissue is helpful for the diagnosis of breast cancer; so, a classification method named FT_GA_GBDT is proposed. First, the correlations between the features and classification labels of breast tissue samples were determined, and features with higher correlation were analyzed statistically and combined by weight. Thus, feature Read More

Background: The safe and stable operation of large-capacity hydro-generators is of great significance to the power grid. However, due to the armature reaction and the stator slots of the hydroelectric generator, the torque ripple of the generator is usually large. Long time running under the condition of large torque ripple will cause damage to the generator components and even threaten the safety of the power grid. Obj Read More

Background: At present, the tree whitewashing in China is mainly based on the traditional manual whitewashing method, which has the shortcomings of high labor intensity, low efficiency, excessive wastage of paint, danger to human health, and poor adaptability to the strong seasonality of tree whitewashing. Objective: To reduce the sunburn and water evaporation of trees, prevent the invasion of diseases and Read More

Background: Proportional-integral-differential (PID) controller is widely used in the engineering field because of its simple structure, high control accuracy, and easy operation. Different patented PID control technologies have their own advantages, disadvantages, and application scenarios. Objective: By analyzing and discussing the improved PID control techniques in the electrohydraulic servo system, some valuable conclusi Read More

High-speed motorized spindle is the core component of high-speed machining machine tools, and thermal error is the main factor affecting the machining accuracy of the motorized spindle. Reducing thermal error has become the most important research topic in the case of motorized spindles. The development status of the cooling strategy of the motorized spindle is explored, and the methods to improve the cooling e Read More

Background: Traditional rigid robots are difficult to adapt to complex unstructured environments due to their limited degree of freedom and lack of flexibility. Therefore, soft crawling robots are concerned widely by their powerful deformation ability, infinite number of degrees of freedom, and effective interaction with humans. Objective: This paper aims to report the recent progress of soft crawling robots and provide a referen Read More

Background: Capacitive micromachined ultrasonic transducers (CMUTs) is a promising component of mechanical-electrical-acoustical conversion, which shows valuable applications in non-distructive testing and obstacle detection fields. In order to study the influence of dimension parameters on the directivity of CMUTs, the three-dimensional multi-physics coupling model is proposed for CMUTs in this paper. Methods: The model Read More

Background: Surface microtextured technology is an expansion and extension of biomimicry in the tribology field, promoting vigorous development in microtextured tribology. Through artificial means, tiny convex hulls, craters, or stripes of specific size and arrangement are processed on the friction surfaces to change the morphology and contact angle of the surfaces and improve the surface contact state or the lubrication e Read More

With the improvement of living standards and the acceleration of the pace of modern life, people pay more and more attention to health. All kinds of ball games are deeply loved by people. Most people like to go to all kinds of equipment halls for all kinds of sports. However, at present, there are few types of service machines, and there is still a lot of room for development. With the development of ball games, small simple se Read More