A new procedure and driver to control brushless micromotors
ABSTRACT It is presented a new method to control brushless micromotors which eliminates freewheeling currents. To test the method, a new driver has been designed and fabricated in a 0.35 Â¿m standard CMOS process. It is shown in the paper how the driver is effectively reducing the freewheeling currents.
Conference Proceeding: Enabling multiple robotic functions in an endoscopic capsule for the entire gastrointestinal tract exploration[show abstract] [hide abstract]
ABSTRACT: Commercial endoscopic capsules are passive. Nevertheless, active capabilities such as active locomotion, drug delivery or biopsy, among others, can now be offered with the aid of robotics. New robotic functions require additional electronics for control purposes, as well as for the sensors and actuators. To avoid increasing the capsule size as a consequence, it is useful to incorporate all the electronics into the minimum number of elements, preferably in a single ASIC. This paper describes the ASIC included in a robotised capsule with the abovementioned active functions. The ASIC is a system-on-chip (SoC) integrating all the electronics needed to control the other electronic elements in the capsule. It also enables the movement of two BLDC motors, illuminates the exploration region and focuses a liquid lens used to achieve advanced vision capabilities. Details of the complete system integration are also given.ESSCIRC, 2010 Proceedings of the; 10/2010