Listar E - Artículos por fecha de publicación
Mostrando ítems 1-20 de 42
-
A multiplexing architecture for mixed-signal CMOS fuzzy controllers
(Institution of Engineering and Technology, 1998)Limits to precision impose limits to the complexity of analog circuits, hence fuzzy analog controllers are usually oriented to fast low-power systems with low-medium complexity. This paper presents a strategy to preserve ... -
A Modular Programmable CMOS Analog Fuzzy Controller Chip
(IEEE Circuits and Systems Society, 1999)We present a highly modular fuzzy inference analog CMOS chip architecture with on-chip digital programmability. This chip consists of the interconnection of parameterized instances of two different kind of blocks, namely ... -
Three Realizations and Comparison of Hardware for Piezoresistive Tactile Sensors
(MDPI, 2001-03-17)Tactile sensors are basically arrays of force sensors that are intended to emulate the skin in applications such as assistive robotics. Local electronics are usually implemented to reduce errors and interference caused by ... -
Neuro-fuzzy chip to handle complex tasks with analog performance
(IEEE Computational Intelligence Society, 2003)This paper presents a mixed-signal neuro-fuzzy controller chip which, in terms of power consumption, input–output delay, and precision, performs as a fully analog implementation. However, it has much larger complexity ... -
Tactile Sensors Based on Conductive Polymers
(Springer Berlin / Heidelberg, 2010)This paper presents results from a selection of tactile sensors that have been designed and fabricated. These sensors are based on a common approach that consists in placing a sheet of piezoresistive material on the top ... -
A large area tactile sensor patch based on commercial force sensors
(MDPI, 2011)This paper reports the design of a tactile sensor patch to cover large areas of robots and machines that interact with human beings. Many devices have been proposed to meet such a demand. These realizations are mostly ... -
Hysteresis correction of tactile sensor response with a generalized Prandtl–Ishlinskii model
(Springer-Verlag, 2012)Tactile sensors are basically arrays of force sensors. Most of these force sensors are made of polymers or conductive rubber to lower cost, especially in the case of large area low-medium resolution tactile sensors. The ... -
Driving Interface Based on Tactile Sensors for Electric Wheelchairs or Trolleys
(MDPI, 2014)This paper introduces a novel device based on a tactile interface to replace the attendant joystick in electric wheelchairs. It can also be used in other vehicles such as shopping trolleys. Its use allows intuitive driving ... -
Insights into the Mechanical Behaviour of a Layered Flexible Tactile Sensor
(MDPI Open Access Journal, 2015)This paper shows realizations of a piezoresistive tactile sensor with a low cost screen-printing technology. A few samples were fabricated for different materials used as insulator between the conductive layers and as top ... -
Influence of Errors in Tactile Sensors on Some High Level Parameters Used for Manipulation with Robotic Hands
(MDPI, 2015)Tactile sensors suffer from many types of interference and errors like crosstalk, non-linearity, drift or hysteresis, therefore calibration should be carried out to compensate for these deviations. However, this procedure ... -
High-Accuracy Readout Electronics for Piezoresistive Tactile Sensors
(MDPI, 2017)The typical layout in a piezoresistive tactile sensor arranges individual sensors to form an array with M rows and N columns. While this layout reduces the wiring involved, it does not allow the values of the sensor resistors ... -
FPGA-Based Tactile Sensor Suite Electronics for Real-Time Embedded Processing
(IEEE, 2017)Dexterity in robotic hands is not enough to cover the demands for more flexibility in the manufacturing process. Specifically, processes that involve cooperation or learning from humans, slippage detection and tactile ... -
Tactile Sensor-Based Steering as a Substitute of the Attendant Joystick in Powered Wheelchairs
(IEEE Transactions on Neural Systems and Rehabilitation Engineering, IEEE, 2018)Attendant joysticks of powered wheelchairs are devices oriented to help caregivers. Diseases and disabilities such as dementia, spinal cord injuries or blindness make the user unable to drive the chair by his or her own. ... -
Assistive handlebar based on tactile sensors: control inputs and human factors
(Sensors, MDPI, 2018)Tactile sensors can be used to build human-machine interfaces, for instance in isometric joysticks or handlebars. When used as input sensor device for control, questions arise related to the contact with the human, which ... -
Fast Calibration Methods for Resistive Sensor Readout Based on Direct Interface Circuits
(MDPI, 2019-09-07)A simple method to measure the resistance of a sensor and convert it into digital information in a programmable digital device is by using a direct interface circuit. This type of circuit deduces the value of the resistor ... -
Quasi single point calibration method for high-speed measurements of resistive sensors
(MDPI, 2019-09-30)Direct interface circuits are a simple, inexpensive alternative for the digital conversion of a sensor reading, and in some of these circuits only passive calibration elements are required in order to carry out this ... -
Improved calibration method for resistive sensors using direct interface circuits
(Institute of Electrical and Electronics Engineers (IEEE), 2019-12-10)Traditional calibration methods for measuring resistance values using a direct interface circuit, comprising a capacitor and some calibration resistors, offer a straightforward, economical option. However, such methods ... -
Adding Proximity Sensing Capability to Tactile Array Based on Off-the-Shelf FSR and PSoC
(IEEE, 2020)Tactile sensors have been incorporated into robots to help in many tasks, such as preventing damage to humans in collaborative works or assistance or in dexterous manipulation. Proximity sensors are also common in robotics ... -
Method to reduce quantization error in direct interface circuits for resistive sensors
(Institute of Electrical and Electronics Engineers (IEEE), 2020-02-03)Reading resistive sensors and converting their information to digital values is a matter of great interest in practical applications. Direct Interface Circuits (DICs) perform this task efficiently through a resistance-to ... -
Reducing measurement time in direct interface circuits for resistive sensor readout
(MDPI, 2020-05-02)Direct Interface Circuits (DICs) carry out resistive sensor readings using a resistance-to-time-to-digital conversion without the need for analog-to-digital converters. The main advantage of this approach is the simplicity ...