Built-in Temperature Detecting System for Diagnosing Ball-Screw Preload Variation of a Feed Drive System
Abstract:This paper presents a built-in detecting system for precisely measuring temperature of interest points on a ball-screw structure and the method of diagnosing different ball-screw preload based on processing acquired signals with further classification by support vector machines (SVM). The detecting system mainly consists of a sensing unit and a hardware signal processing unit. The core sensor, utilizing a glass-type SMD PT-100 with a Wheatstone bridge circuit configuration, is implemented onto a 1 cm × 1 cm circuit board and then packaged by a metal housing as a sensing unit with a dimension less than 1.5 cm3. The resolution of the measured temperature can be reached 0.01 °C within the range of –40 to 125 °C through our developed signal processing circuit unit. A preload-adjustable ball screw is designed, manufactured, and installed into a computer-controlled single-axis feed drive system. The temperature sensing unit is built into the screw nut for acquiring signals with different ball-screw preload level settings. Results show that diagnosis of ball-screw preload can be achieved less than 100 sec, and the preload level classification reaches nearly 100%. The developed built-in temperature detecting system and analysis method demonstrated the feasibility of evaluating ball-screw health condition and would be very useful in many industrial applications.
Document Type: Research Article
Publication date: 2012-05-01
More about this publication?
- The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites