File size: 487.65 KB
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Last download on: Mon May 20, 2013 11:43:08 PM
Key-Words: - Power actuator, sensor, ratiometric measurement, high temperature ... hermetic seal, closed-loop control 1 Introduction ... Thus, only two precision components are required ...
This paper presents a sensor/actuator system for high-temperature applications with the complete measurement electronics and sensors integrated into the actuator. The data transmission is implemented as point-to-point Power Line Communication (PLC), between the sensor/actuator system and its control unit. A separable transformer serves as an inductively coupled contactless connector for both power and bidirectional PLC-data, allowing for a perfect hermetic seal. We discuss the increased requirements for the measurement electronics at high operating temperatures and we present a special ratiometric self-calibration technique to eliminate temperature drifts that is also suitable for integration into an Application Specific Integrated Circuit (ASIC).
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"Inductively Coupled Sensor/Actuator System for Digital Closed-Loop"
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