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Bone milling is one of the most common operations in various kinds of orthopedical surgeries, such as laminectomy surgery. For safety issue and efficacy, it is very important to recognize the states in milling operation. In this paper, an approach to recognize the states of bone milling is proposed, which identify the cortical tissue layer and cancellous tissue layer. Hilbert-Huang Transform (HHT)...
This paper is based on a new Robotic Spinal Surgical System (RSSS) we have developed in last 2 years. This robotic surgical system focuses on pedicle screw implanting surgery, but can be used on some other orthopedic surgeries. Some safety design principles are presented during development of the RSSS. In this paper, two main aspects of them based on force messages are described. One is admittance...
Monitoring the content of the oxygen in the environment is very important due to the oxygen level having severe effect on human life. Through high-energy ball milling and screen-printing techniques, 40 °C operating temperature for SrTiO3 oxygen gas sensor was obtained. It is much lower than that of the conventional SrTiO3 oxygen sensors above 700 °C. This is significant for application of semiconducting...
In edge envelope process of milling cutter CAD/CAM, the grinding depth is variable which causes grinding force to change on a large scale and the error of edge envelope to increase. To improve form cutter accuracy, a closed-loop control system was designed to accomplish control of envelope process. For complicated dynamic process, fuzzy controller was used to adjust parameters online. By measuring...
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