Results 201 to 210 of about 18,006 (243)

Adaptive null steering beamformer implementation for flexible broad null control

Signal Processing, 2011
An implementation of adaptive null steering beamformer for flexible broad null control, based on constrained recursive updating of array response zeros and spatial FIR filters, is presented. The design allows the beamformer to form broad nulls and control their widths readily. The new method is of great advantage for sensor array in which the number of
S. Leng, W. Ser
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Comparison of null-space and minimal null-space control algorithms

Robotica, 2007
SUMMARYThis paper deals with the stability of null-space velocity control algorithms in extended operational space for redundant robots. We compare the performance of the control algorithm based on the minimal null-space projection and generalized-inverse-based projection into the Jacobian null-space.
Bojan Nemec, Leon Žlajpah, Damir Omrčen   +2 more
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Estimation of Null Controllable Region

2019
In recent results on linear systems subject to actuator saturation, characterizations of null controllable regions form a guideline for searching feedback laws. Null controllable region , which is also called controllable set, is closely relative with time optimal control [25]. Null controllability of a control system is the possibility of steering its
Hongjiu Yang, Yuanqing Xia, Qing Geng
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Null Controllability of Nonlinear Functional Differential Equations

SIAM Journal on Control and Optimization, 1979
For various types of linear and nonlinear functional differential equations null controllability (local or global) is established. Previously it was believed that for a broad class of nonlinear equations local null controllability was implied by the null controllability of the linear approximation.
Underwood, Robert G., Young, Donald F.
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Null Controllability of Semilinear Delay Control Systems

International Journal of Dynamical Systems and Differential Equations
Summary: In this paper, the null controllability results for a class of semilinear delay control systems have been established. The fundamental semigroup is generated by using the perturbation due to the linear delay operator, which defines the fundamental solution of the system.
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Null Controllability — Continuous-Time Systems

2001
This chapter studies null controllability of continuous-time linear systems with bounded controls. Null controllability of a system refers to the possibility of steering its state to the origin in a finite time by an appropriate choice of the admissible control input.
Tingshu Hu, Zongli Lin
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Null Controllability of Coupled Parabolic Systems with Switching Control

Applied Mathematics & Optimization
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liu, Yuanhang, Wu, Weijia, Yang, Donghui
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Null Subjects and Control

2002
Abstract The standard, albeit problematical, assumption that PRO and pro are distinct is retained as a working hypothesis. Safir (1996: 84ff.) discusses criteria to differentiate PRO and pro: (i) pro, but not PRO, can be a resumptive pronoun in relative clauses in null subject languages; (ii) pro, but not PRO, can be an expletive; (iii ...
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Null Controllability —Discrete-Time Systems

2001
This chapter studies null controllability of discrete-time linear systems with bounded controls. As in the continuous-time case, when the control input is limited by the actuator saturation, a discrete-time linear controllable system might not be globally null controllable. We are thus led to the characterization of the null controllable regionCthe set
Tingshu Hu, Zongli Lin
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Stabilization on Null Controllable Region

2019
A set of equilibrium points in a null controllable region is obtained based on an important assumption. A stable equilibrium line is given for DOSs subject to actuator saturation . A complex controller is constructed to achieve global stabilization of DOSs with actuator saturation .
Hongjiu Yang, Yuanqing Xia, Qing Geng
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