Fast force control using acceleration-aided Kalman filter and reaction force observer for probing systems

摘要: In-circuit tests play a key role in manufacturing electronic devices with high level of reliability. One the most flexible technology for is based on flying probes, which set conductive needles automatically positioned multiple test points device under test. The probes are controlled at speed within working space, to increase production rate, Position and contact force probing system should be accurately controlled, prevent damages parts. A sensor usually used detection controlling force. However, weak against impact expensive. Reaction Force Observer (RFOB) often control without sensors. This paper proposes fast controller systems sensor. In this study, MEMS accelerometer improve performance RFOB. Acceleration-aided Kalman Filter (aaKF) combined RFOB derive accurate estimates velocity acceleration signals. conducted using jerk signal, can obtained by differentiating acceleration. After detection, negative constant applied short period, decelerate motion probe. Finally, applied. Experiments were validate effectiveness proposal. As result, proposed method quickly overshoot, settling time 10 ms. effective circuit systems, because time, so making in-circuit short.