App020 en position-checking-robots
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The document describes an eddy current displacement sensor system for measuring the position of robots. The system uses 6 eddy current sensors to measure the position of a measurement cube as a robot moves it. Measurements have an accuracy of 10 micrometers over a range of 0-15 mm. Reasons for using this system include its non-contact operation, high accuracy, economical price, and insensitivity to dirt, oil, and electromagnetic fields.
App020 en position-checking-robots
- 1. A020_e Eddy current displacement sensors eddyNCDT Position checking on robots The introduction of the international standard ISO Technical details 9283 demands new non-contacting measurement - Measuring range: 0 - 15 mm methods. The measurement system for the position - Accuracy: 10 µm measurement is composed of a measurement cube - Band witdh: < 2 kHz with a defined weight, a sensor and a support. The sensor is equipped with six U15 eddy current Ambient conditions sensors. During the measurement the robot moves - Temperature: Room temperature 15 - 25 °C the measurement cube into the sensor range. The - Medium: Air data from the eddy current sensors is passed via a - Interference fields: EM fields due to the robot fast interface to the PC where it is processed. drive motors Measurement inaccuracies due to linearity and - Measurement object may be slightly oily. tilting errors (parallelism between the sensor and measurement object) and thermal effects are Reasons for the system selection additionally compensated in the measurement - Non-contacting method (preference for non- software. contacting systems in ISO 9283) - High accuracy (bandwidth) - Economical price - Insensitive to dirt, oil, electrical and magnetic fields Principle Measurement cube Principle Calibration point Roboter displacement sensors Measuring head Principle Support MICRO-EPSILON A member of micro-epsilon group. Koenigbacher Str. 15 Tel.: 0 85 42/1 68-0 info@micro-epsilon.com Certified DIN EN ISO 9001 : 2000 94496 Ortenburg / Germany Fax: 0 85 42/1 68 90 www.micro-epsilon.com Modifications reserved Y9781020