Recent Patents on Mechanical Engineering - Volume 16, Issue 5, 2023

Background: Crashworthiness studies the safety qualification of a vehicle (both airborne and road transports) to protect its occupants during an impact. Before an aircraft can receive transport certification, it must meet a number of crashworthiness requirements, such as the structure's deformation pattern, absorbed kinetic energy profile, and acceleration responses experienced by the components and human body mo Read More

Background: The electro-hydraulic servo system has the advantages of high stiffness, fast response speed, high precision and power-to-weight ratio.Objective: In this patent, an adaptive robust control strategy based on friction compensation is proposed for insufficient control accuracy due to a large number of nonlinearities and uncertainties in the system.Methods: In this patent, the mathematical relationship between the p Read More

Background: At present, due to the widespread use of robotic arms for the automatic loading and unloading of CNC gear milling machines, there has been an increase in patents related to robotic arms. However, these robotic arms have issues of low efficiency and large space occupation. To solve these problems, a CNC gear milling machine with an automatic loading and unloading manipulator device needs to be designed.M Read More

Background: Hydrocarbons are increasingly being considered as potential fourth-generation refrigerants due to their environmentally-friendly properties. However, accurate prediction and calculation of their thermal properties are essential for their industrial application.Objective: In this study, molecular dynamics simulations were performed to calculate the density, selfdiffusion coefficient, viscosity and thermal conductiv Read More

Background: The present work numerically models the incompressible, continuous phase, viscous flow of Newtonian fluid flow in a bounded domain of two-dimensional cavity that is driven by walls and contains grooves in the shape of squares on the lower wall. With the help of the mesoscopic lattice Boltzmann method (LBM) and D2Q9 square lattice model, simulation results are found stable and reliable. The flow physics of the Read More

Background: With the rapid development of artificial intelligence, the traditional cloud computing model has serious bandwidth and energy consumption problems when storing and processing massive amounts of raw data. To address this problem, recent patents have investigated methods for intelligent task offloading and allocation in mobile edge computing.Objective: A Directed Acyclic Graph (DAG) task unloadin Read More

Background: Rickshaws are a popular and inexpensive mode of transportation in Bangladesh for short-distance travel. However, the eye leaf spring in a typical rickshaw suspension system does not provide adequate shock isolation. The coil spring-damper suspension system is more effective, but is costly and not affordable for most manufacturers. Thus, the goal is to modify the eye leaf spring to be inexpensive but a safe and com Read More

Background: Stick-slip actuators are commonly used in Nano/Micro precision positioning systems, but their control is challenging due to factors like nonlinear friction, PEA hysteresis, and uncertainty. Researchers have made efforts to address these challenges and documented their findings in articles and patents.Methods: This study introduces a novel vertical stick-slip actuator and proposes two different methods for overcomi Read More