Development of a robust electro-optical proximity sensor
نویسندگان
چکیده
The development of a robust fiber-optic proximity sensor is presented. A method is proposed by which to solve tli-oblem of robustness of amplitudeand phase-modulated electro optical proximity sensors to variations in surface-reflection characteristics, a n d to reduce the influence of dis tance a n d or ientat ion measurements on one other. The method comprises three different methodologies, which a r e combined for bet ter efficiency: integrat ion of dis tance a n d or ientat ion sensors, a novel polarization-based optical-filtering approaeh, and active sensing. Emphasis is given to unique solutions for background-noise interference and dynamic-range-limitation problems. s,
منابع مشابه
Robust Lyapunov-based Control of MEMS Optical Switches
In this paper, a robust PID control scheme is proposed for Micro-Electro-Mechanical-Systems (MEMS) optical switches. The proposed approach is designed in a way which solves two challenging and important problems. The first one is successful reference tracking and the second is mitigating the system nonlinearities. The overall system composed of nonlinear MEMS dynamics and the PID controller is ...
متن کاملRobust Lyapunov-based Control of MEMS Optical Switches
In this paper, a robust PID control scheme is proposed for Micro-Electro-Mechanical-Systems (MEMS) optical switches. The proposed approach is designed in a way which solves two challenging and important problems. The first one is successful reference tracking and the second is mitigating the system nonlinearities. The overall system composed of nonlinear MEMS dynamics and the PID controller is ...
متن کاملDual-Fiberoptic Microcantilever Proximity Sensor
Microcantilevers are key components of many Micro-Electro-Mechanical Systems (MEMS) and Micro-Optical-ElectroMechanical Systems (MOEMS) because slight changes to them physically or chemically lead to changes in mechanical characteristics. An inexpensive dual-fiberoptic microcantilever proximity sensor and model to predict its performance are reported here. Motion of a magnetic-material-coated c...
متن کاملA novel electrooptical proximity sensor for robotics: calibration and active sensing
An electro-optical proximity sensor capable of measuring the distance and two-dimensional orientation of an object’s surface is presented. The robustness of the sensor, targeted for utilization in robotic active sensing, is achieved via the development of a novel amplitude-modulated-based electrooptical transducer, an electronic-interface circuit that provides very good noise immunity and a wid...
متن کاملDesigning voltage tunable single and multi-channel optical filter with 1DDPC nano-structure
An electro-optic tunable single and multi-channel optical filter based on one-dimensional defective photonic crystal (1DDPC) structure is proposed. A couple of externally tunable defects in arrangement of (AB)5D1(BA)D2(BA)5, where A and B are dielectric materials, D1 and D2 are the tunable defects are used. The defects are composed of the ferroelectric LiNbO3 crystals and two pairs of thin Ag l...
متن کامل