Patents represent a quid pro quo between the public and the inventor: in exchange for disclosing the invention, the inventor receives the right to exclude others from practicing her invention. They therefore serve as a source of technical information. Patents also communicate information to markets and companies that serve to reduce various transaction costs, allowing more efficient transaction...

Abstract This article investigates the bearing‐based formation control problem for second‐order multiagent systems (SMS) in presence of bounded disturbances their models. The main contributions this are listed as follows: (1) We extend bearing to SMS. (2) propose two novel robust distributed laws. In first law, measurement global inertial frame is required. law guarantees that inter‐agent beari...

Paraxial light in a Cole-Cole nonlocal medium: integrable regimes and singularities. ABSTRACT Nonlocal nonlinear Schrödinger-type equation is derived as a model to describe paraxial light propagation in nonlinear media with different 'degrees' of nonlocality. High frequency limit of this equation is studied under specific assumptions of Cole-Cole dispersion law and a slow dependence along propa...

This paper presents a Lie group setting for the problem of control of formations, as a natural outcome of the analysis of a planar two-vehicle formation control law. The vehicle trajectories are described using the planar Frenet–Serret equations of motion, which capture the evolution of both the vehicle position and orientation for unit-speed motion subject to curvature (steering) control. The ...

We measured thresholds and reaction times for detecting a target, defined by orientation contrast, as a function of the number of elements displayed simultaneously and of the linear orientation gradient present in the display. This test served to evaluate how well the human visual system is able to ignore smooth gradients in orientation - similar to what it does with gradients of luminance or w...

This paper studies dexterous manipulation in the plane by a two-fingered hand in the plane. The dynamics of each finger, which consists of two links with coupled joints, are derived based on Lagrangian mechanics. As an object is being manipulated, its orientation and the two independent joint angles of the hand constitute the state of the entire system. Contact kinematics, accounting for both s...

Abstract: Two models of mini-flying robots with four rotors called X4-flyer presented and studied for the stabilization. Both cases with and without motion planning are proposed in this paper. The first is called inertial model with axes orientation and the second is called the inertial model without axes orientation. The control algorithm of the X4-flyer is based on the Lyapunov method and obt...

Abstract : This paper proposes a speed tracking control of induction motors based on the inpuVoutput linearization method, which can also achieve the maximal power transfer. A simple group of observers are designed to estimate the rotor flux in order to determine the orientation of rotor flux. The control law of the maximal power transfer to the rotor gives the relationship between the stator v...

The determination of residual or applied stress through X-ray or neutron diffraction is generally regarded as a mature method. Most x-ray diffractometers can be used to perform a measurement of lattice strain vs. tilt angle, which is then converted into stress. The apparent simplicity of the conversion (the sinø law comes to mind) betrays the fact that elastic and plastic anisotropy often cause...

In this paper, we investigate coverage control problem for mobile sensor networks. The novelty is to consider an anisotropic sensor model whose performance depends not only on the distance but also on the orientation to a target point. By adapting Lloyd algorithm, a distributed control law is derived. Aside from coverage, we also show that the control law guarantees collision avoidance between ...