Showing papers in "Mechatronics in 2000"

TL;DR: Magnetorheological (MR) fluids, foams and elastomers comprise a class of smart materials whose rheological properties may be controlled by the application of an external magnetic field.

TL;DR: A synergistic combination of neural networks with sliding mode control (SMC) methodology is proposed, requiring a minimal amount of a priori knowledge and robust in the face of parameter changes.

TL;DR: An overview of microactuators, focussing on devices made by microfabrication technologies which are based on silicon processes like photolithography, etching, thin film deposition etc, which are promising devices for future medical, biological and technical applications like minimal invasive surgery or the vast field of information storage and distribution.

TL;DR: Shape memory materials fulfill an important role in both actuation and mechanical coupling between actuators and associated dynamic systems as discussed by the authors, but the basic physical principles are very different and this paper attempts to outline the current state-of-theart to those already involved with the technology and perhaps open a fresh chapter in smart materials to those who are new to it.

TL;DR: In this article, an adaptive position control using artificial neural networks (ANNs) was proposed for a 4/3 way proportional valve, a differential cylinder and a variable load force.

TL;DR: In this article, a controller consisting of two control loops is proposed to attain this goal, the inner loop controls a nonlinear hydraulic actuator to achieve tracking of a desired actuation force.

TL;DR: In this paper, a study has been undertaken of two novel forms of actuators (polymeric and pneumatic muscle), that have characteristics that can be broadly classified as giving them a range of bio-mimetic functions.

TL;DR: In this paper, the theory of water electrolysis in a closed electrochemical cell, that contains two electrodes, an electrolyte and a pressure sensor is described, and an electronic feedback system is connected to the cell.

TL;DR: This paper proposes the hierarchical evolutionary algorithm to generate a walking motion through energy optimization and aims to generated a natural motion by considering ZMP, and obtains natural walking motions on some slopes using this algorithm.

TL;DR: In this article, a feedforward-feedback control structure is proposed for precision motion control of a permanent magnet linear motor (PMLM) for applications which are inherently repetitive in terms of the motion trajectories.

TL;DR: In this article, a switching-type fuzzy sliding mode controller for the cart-pole system is proposed, which makes a vertical pole straight up and regulates the position of the cart simultaneously.

TL;DR: In this paper, the authors presented the design aspects of a compact tip/tilt, fast steering laser scanner composed of one single mirror with a large active area, driven by linear electromagnetic actuators.

TL;DR: In this article, the authors discuss some practical issues concerning the identification of electrohydraulic actuators, using discrete-time linear models, and discuss their application in the design of adaptive controllers.

TL;DR: In this paper, the authors proposed a different kind of motor principle by the combination of a harmonic drive gearbox and stack piezoactuators, which replaced the functionality of the wave generator generating a travelling wave into the flexspline element of the gearbox.

TL;DR: In this paper, the authors applied and evaluated system identification methods using both commercial software and dedicated subspace model identification software (MOESP) to identify state-space models in robotics.

TL;DR: In this paper, a large Stewart platform for fine tuning of the feed source tracing is presented, and the model of kinematics control is developed with coordinate transformation, and a quasi-static load analysis is made by virtual work principle with Jacobian matrix because the tracing speed is slow.

TL;DR: In this article, the transduction properties of magnetostrictive alloys have improved significantly over earlier nickel based alloys, and terbium, dysprosium and iron are now available in commerical quantities.

TL;DR: A new automated sewing system is described, consisting of two robots handling the fabric on the table in a similar manner as does a human operator during sewing, and visual feedback was adopted to control seam path and its deviation from the desired trajectory.

TL;DR: The intelligent sensor embeds the extra functionality into a sensor/instrument, given the availability of internal computing power and digital communications, based on a frequency output sensor and Fieldbus and applies computing algorithms for separating sensor data errors and predicting sensor status.

TL;DR: In this article, the use of structural control for reduction of sound radiation is presented, where the actuators are generated by piezo-electric actuators directly attached to the panel surface and the Finite Element Method is derived to find suitable locations for these elements.

TL;DR: In this article, a novel airflow sensor has been developed for applications involving miniature chemical sensing robots, which can measure both wind direction and velocity at airflow rates commonly encountered in an indoor environment.

TL;DR: A visual servoing algorithm is proposed for a robot with a camera in the hand to track a moving object in terms of image features and their variations, where fuzzy logics and fuzzy-neural networks are involved to learn feature Jacobian-based kinematic control law.

TL;DR: In this article, the reference phase current pattern is modulated with the aid of fuzzy logic, which is well suited to compensate for the nonlinearities of the system, so that the torque ripples are further suppressed.

TL;DR: In this article, a quick-return mechanism with fuzzy neural network (FNN) control is proposed, which is driven by a field-oriented control permanent magnet (PM) synchronous servomotor.

TL;DR: In this article, a planar and cylindrical electrorheological microdevices with 50μm gap size were developed for control of fluidic microactuators, which confine a flow channel of 10-20mm length.

TL;DR: In this paper, two reference input preshaping methods are considered; (i) superposing a ramp function onto another function, and (ii) convolving a sequence of impulses with a desired reference input to generate a shaped input.

TL;DR: In this article, a self-tuning adaptive control (STA) control for a magnetically levitated (maglev) guiding system is presented, where the stabilizing forces are produced by electromagnets.

TL;DR: ROSUM focuses on treating undesirable crosstalk data with a heuristic pattern classification technique, which enables full panorama scanning to be performed more rapidly then error eliminating rapid ultrasonic firing (EERUF), currently the most rapid method available.

TL;DR: In this paper, an adaptive robust control is implemented to the media advance system in thermal inkjet printers to achieve the transient performance and final tracking error guarantees the transient and asymptotic tracking.

TL;DR: In this article, the authors have applied two-degree-of-freedom feedback control with feed-forward control for the motor servo control so that the rear steering actuator can track the target rear steering angle accurately and stably.