Recent Patents on Mechanical Engineering - Volume 15, Issue 1, 2022

Background: As the basis of mechanical manufacturing, large-scale machine tools are being developed for improving processing accuracy, load-bearing capacity and rigidity. Hydrostatic thrust bearing, hydrostatic guide and hydrostatic ram are important components of large machine tools; with the continuous improvement of product accuracy requirements, the research on the hydrostatic thrust bearing, hydrostatic guide a Read More

Background: In machine vision, 3D reconstruction is widely used in the medical system, autonomous navigation, aviation and remote sensing measurement, industrial automation, and other fields, and the demand for reconstruction precision is significantly highlighted. Therefore, 3D reconstruction is of great research value and will be an important research direction in the future. Objective: By reviewing the latest dev Read More

Background: With the continuous pursuit of high-quality and high-precision bearings in industrial production, the processing accuracy of bearing balls is increasing, and high surface quality has become the most basic requirement for high-quality bearing balls. Studying the working principle of the detection devices for surface defects on bearing balls is beneficial to improve the surface accuracy of bearing balls and the quality o Read More

Background: In the process of high-speed driving, there are many source signals that affect the ear noise of passengers in the car. It is important to obtain the reference signal of Active Noise Control (ANC) of the vehicle at high-speed conditions. Objective: This paper introduces a method to study the time-domain signal reconstruction of interior noise based on a data-driven method. Methods: Based on the noise signal collect Read More

Background: Quadruped crawling robots face challenges when working in the raised terrain of a slope. The robot is affected by gravity and gait under this terrain. The ground reaction force on its hind legs is relatively large. This has strict requirements for the structure and gait planning of the quadruped crawling robot. Objective: Aimed at the problem of a large ground reaction force on the rear legs of the quadruped craw Read More

Background: The vibration control loop is the key technology adopt to improve the control performance of the vibration table, which is set outside of the hydraulic vibration table servo control loop. However, the huge number of signal processing work prompts high demands on the calculation ability of the vibration controller. One kind of multi-CPU embedded vibration controller constructed by Digital Signal Processor (DSP) is pr Read More

Background: The thermal bubble-driven micro actuators have advantages of simple structure and low working voltage, which have broad prospects in the field of micro-fluidic systems. Methods: This paper presents a new type of micro-planar induction heater which can realize the fixed-point growth of thermal bubbles by adding some active cavities. The micro-planar induction heater is composed of a metal heating plate, a gl Read More

Background: Stereo-vision-based three-dimensional coordinates measurement technology has been widely applied in the military or civil fields. There are two problems that need to be solved. The first problem is that each camera’s internal parameters and the two cameras' external parameters need to be calibrated. To increase the measurement range, usually, the turntable is used with the stereo vision system toge Read More

Background: Owing to the rising trend of agro wastes, efforts are being geared towards producing environmentally friendly welding flux. This project developed a nano-flux powder (MnO) from banana peel using nano-technology. For the first time, manganese was synthesized from banana peel ash. After that, the nano mixtures were centrifuged and calcinated to obtain nano flux powder. Methods: The surface morphology a Read More