نتایج جستجو برای: actuator dynamics

تعداد نتایج: 451450  

2010
Somashekhar S. Hiremath M. Singaperumal

This paper gives a new approach for modeling the fluid-structure interaction of servovalve component-actuator. The analyzed valve is a precision flow control valve-jet pipe electrohydraulic servovalve. The positioning of an actuator depends upon the flow rate from control ports, in turn depends on the spool position. Theoretical investigation is made for No-load condition and Load condition for...

Journal: :modeling and simulation in electrical and electronics engineering 2015
arash khatamianfar mehdi bagheri

in this study, a new servo control system is presented for the overhead crane based on discrete-time state feedback approach. it provides both robust tracking and load swing suppression. inspired from independent joint and computed torque control in robot manipulator field, a new model is derived in which the crane actuators are considered as the main plant. the crane nonlinearities are then tr...

Journal: :J. Field Robotics 2015
Nicholas Paine Joshua Mehling James Holley Nicolaus A. Radford Gwendolyn Johnson Chien-Liang Fok Luis Sentis

This paper discusses the actuator-level control of Valkyrie, a new humanoid robot designed by NASA’s Johnson Space Center in collaboration with several external partners. We focus on several topics pertaining to Valkyrie’s series elastic actuators including control architecture, controller design, and implementation in hardware. A decentralized approach is taken in controlling Valkyrie’s many s...

2004
Walter VERDONCK Joris De Schutter

Industrial robot manipulators have become an indispensable means of automation to increase flexibility and productivity. The ever increasing quality standards and new applications impose higher requirements on accuracy, reliability and performance. Due to the complex nonlinear robot dynamics, the design of robot controllers should include accurate dynamic robot models. Robot identification is a...

2018
Mithun Babu Raghu Ram Theerthala Arun Kumar Singh Bharath Gopalakrishnan K.Madhava Kirshna

In this paper, we propose a new model predictive control (MPC) formulation for autonomous driving. The novelty of our formulation stems from the following new results. Firstly, we adopt an alternating minimization approach wherein linear velocities and angular accelerations are alternately optimized. We show that in contrast to the joint formulation, the alternating minimization better exploits...

2010
Seyed Ehsan Shafiei

1.1 Robot manipulators Robot manipulators are well-known as nonlinear systems including strong coupling between their dynamics (Craig, 1996). These characteristics, in company with: 1) structured uncertainties caused by model imprecision of link parameters, payload variation, etc., and 2) unstructured uncertainties produced by un-modeled dynamics –such as nonlinear friction and external disturb...

1999
Jonathan E. Luntz William C. Messner Howie Choset

The Modular Distributed Manipulator System (MDMS) is a macroscopic actuator array which can manipulate objects in the plane. The piecewiseconstant dynamics of manipulation on the MDMS are developed based on an exact discrete representation of the system. The resulting dynamics are inverted enabling the calculation of an open-loop vector eld which provides arbitrary uniform object dynamics. The ...

1999
Jonathan E. Luntz William Messner

The Modular Distributed Manipulator System (MDMS) is a macroscopic actuator array which can manipulate objects in the plane. The piecewise-constant dynamics of manipulation on the MDMS are developed based on an exact discrete representation of the system. The resulting dynamics are inverted enabling the calculation of an open-loop vector eld which provides arbitrary uniform object dynamics. The...

The objective of current paper is 3D simulation of turbulent, developing flow and unsteady within a circular duct in presence of the body force vector persuaded by Dielectric barrier discharge (DBD) plasma actuator inside the surface of geometry for the first time. This article aims at investigating of applying plasma actuator to control separation with special arrangement of electrodes. For th...

Journal: :Adaptive Behaviour 2006
David M. Michael

This paper explores the use of dynamical systems as a framework for understanding how musically autonomous behavior can be achieved in artifact. Just as dynamics has offered a breakout strategy for the perceived limitations of artificial intelligence, so too can dynamics offer a solution to the current limitations of autonomous generative music systems. By studying the biophysics of birdsong, a...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید