Results 41 to 50 of about 4,154,888 (239)

Trajectory-Free Control of Lower-Limb Exoskeletons Through Underactuated Total Energy Shaping

open access: yesIEEE Access, 2021
Kinematic control approaches for exoskeletons replicate normative joint kinematics associated with one specific task and user at a time, which makes it difficult to adjust to continuously-varying activities during gait training.
Ge Lv, Jianping Lin, Robert D. Gregg
doaj   +1 more source

Using a Second Order Sigma-Delta Control to Improve the Performance of Metal-Oxide Gas Sensors [PDF]

open access: yes, 2018
Controls of surface potential have been proposed to accelerate the time response of MOX gas sensors. These controls use temperature modulations and a feedback loop based on first-order sigma-delta modulators to keep constant the surface potential ...
Domínguez Pumar, Manuel   +4 more
core   +3 more sources

Modeling and Control of a Flexible Structure Incorporating Inertial Slip-Stick Actuators [PDF]

open access: yes, 1999
Shape and vibration control of a linear flexible structure by means of a new type of inertial slip-stick actuator are investigated. A nonlinear model representing the interaction between the structure and a six-degree-of-freedom Stewart platform system ...
Darby, A. P., Pellegrino, S.
core   +1 more source

Investigation of Multi-Input Multi-Output Robust Control Methods to Handle Parametric Uncertainties in Autopilot Design. [PDF]

open access: yesPLoS ONE, 2016
Some level of uncertainty is unavoidable in acquiring the mass, geometry parameters and stability derivatives of an aerial vehicle. In certain instances tiny perturbations of these could potentially cause considerable variations in flight characteristics.
Coşku Kasnakoğlu
doaj   +1 more source

Decoupled Multi-Loop Robust Control for a Walk-Assistance Robot Employing a Two-Wheeled Inverted Pendulum

open access: yesMachines, 2021
This paper develops a decoupled multi-loop control for a two-wheeled inverted pendulum (TWIP) robot that can assist user’s with walking. The TWIP robot is equipped with two wheels driven by electrical motors.
Fu-Cheng Wang   +5 more
doaj   +1 more source

Roller coaster loop shapes revisited [PDF]

open access: yesPhysics Education, 2016
The original paper In 'Rollercoaster loop shapes', (Pendrill 2005 Phys. Educ. 40 517) the author started from the observation that although textbook loops are often circular, real rollercoaster loops are not. In this paper the mathematical description of various possible loop shapes, as well as their riding properties was discussed and also how a study
openaire   +2 more sources

Adaptive Feedforward Cancellation Scheme Temporarily Using Negative Damping to Speed Up the Transient Response When Counteracting Periodic Disturbances

open access: yesIEEE Access
Adaptive Feedforward Cancellation (AFC) is commonly used to counteract periodic disturbances in mechatronic systems in order to enhance the control performance. So far, AFC algorithms either use no or positive damping.
Shota Yabui   +2 more
doaj   +1 more source

H∞ Loop Shaping Robust Control For Tractor-semitrailer

open access: yesMATEC Web of Conferences, 2015
The tractor-semitrailer model is general described and analyzed in road reference coordinate system. The lateral error of look-ahead distance has been chosen as nominal plant and a robust controller using H∞ loop-shaping procedure is designed which can ...
Chang Sheng   +3 more
doaj   +1 more source

High-precision air temperature control considering both hardware elements and controller design

open access: yesCase Studies in Thermal Engineering, 2022
The environment with high-stability temperature is crucial for precision machinery such as lithography and laser interferometer. Some studies have investigated temperature control algorithms and temperature fluctuation attenuators to provide precision ...
He Dong   +5 more
doaj   +1 more source

Casimir-Based Control Beyond the Dissipation Obstacle

open access: yes, 2012
A prevailing trend in the stabilization of port-Hamiltonian systems is the assumption that the plant and the controller are both passive. In the standard approach of control by interconnection based on the generation of Casimir functions, this assumption
Jeltsema, Dimitri, Koopman, Johan
core   +1 more source

Home - About - Disclaimer - Privacy