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Distance measurement using an ultrasonic wave is suitable for environment recognition in autonomous mobile robots. Ultrasonic distance measurement with the pulse-echo method is based on determining the time-of-flight (TOF) of the reflected echoes. The pulse-echo method with pulse compression, the cross-correlation method, can improve the distance resolution(More)
SUMMARY Ultrasonic distance measurement using the pulse-echo method is based on the determination of the time of flight of ultrasonic waves. The pulse-compression technique, in which the cross-correlation function of a detected ultrasonic wave and a transmitted ultrasonic wave is obtained, is the conventional method used for improving the resolution of(More)
High DOF manipulation method is required under microenvironment. In the typical method of micromanipulation by surface tension, however, tilting or rotating of a target is difficult. The multi-needle-type capillary is proposed for high DOF micromanipulation by surface tension. The multi-needle-type capillary is composed of thin needles which are(More)