The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper addresses the stability results of a Markov jump linear system with parameter uncertainties and time-varying delay. A geometric sequence based method is used for delaypartitioning. Then, a modified geometric sequence division (GSD) dependent augmented Lyapunov-Krasovskii functional (LKF) is constructed with respect to the state variables forming in geometric progression. By employing the...
This paper addresses the stability issues of delayed nonlinear systems of the form x(t) = A(t, x(t), x(t − d(t)))x(t)+B(t, x(t), x(t − d(t)))x (t − d(t)), that is, the system matrices depend on time and the present and past states. By means of a trajectory-based comparison approach, the stability of original nonlinear system is transformed into that of a positive linear system called comparison system...
In this paper consensus control of autonomous vehicle platoon is investigated for connected vehicle systems (CVSs) with time delays. Information interaction of the CVSs can be modeled as a network topology. The network topology is extended into the generic framework adapting to any topology, which is represented by a Laplacian matrix. Based on the generic framework, the distributed control protocols...
In this paper, we present a general quadruped locomotion planning method for traversing unstructured terrain. Novel features of our method include the procedure that a body trajectory optimizer based on the Zero Moment Point (ZMP) stability criterion and Linear Inverted Pendulum Model (LIPM). The ZMP trajectory optimizer can be applied to any legged robot which can be approximated by the LIPM model...
In this paper, the problem of finite-time stabilization for switched stochastic nonlinear systems is investigated. The power orders of switched stochastic systems are dependent of the switching signals. Under reasonable conditions, a controller is designed by adding a power integrator technique. It is shown that the system state converges to the origin almost surely in a finite time.
In this paper, finite-time synchronization for delayed complex-valued bidirectional associative memory (BAM) neural networks is investigated. Based on the finite-time stability and some inequality techniques, a synchronization criterion is provided to guarantee that the drive-response systems achieve synchronization in finite time, and the settling time can be estimated effectively. Meanwhile, a suitable...
We establish the dynamics relative to flapping angle of the flapping wing vehicle based on the quasi-steady aerodynamics model and Newton-Euler motion equations, and describe the stability analysis method of linearized perturbation equation under active control by varying flapping frequency based on the Routh-Hurwitz stability criterion. To give a demonstration, we design a flapping wing mechanism...
The correct analysis of power system transient stability is of great significance to the safe and stable operation of power system and the construction of smart grid. Based on the basic theory of Extreme Learning Machine (ELM), this paper studies the transient stability of power system. Firstly, the simulation model is built to simulate power system for obtaining data sets. Then, the implementation...
A PD nonlinear dynamic inverse guidance law finite time convergence is proposed for the problem of UAV's collision avoidance in this paper. First, a proportional-derivative nonlinear dynamic inverse guidance law, which can be applied to multiple initial angles and speeds, is designed to ensure the security of UAV's collision avoidance. In addition, the stability of guidance law is proved by the circle...
This paper presents a lateral stability study of a vehicle fitted with a hydraulically interconnected suspension (HIS) system. The HIS can decouple suspension modes and provides both stiffness and damping to suspension roll mode without stiffing its warp mode. The performance of the HIS in improving vehicle roll stability has been intensively studied in the past decade, while only minimal efforts...
In DC microgrid with increasing number of constant power loads(CPLs), conventional control is difficult to guarantee the stability and dynamic performance of the whole system. For this reason, this paper introduces a property of passivity theory and deduces the passivity-based stabilization criteria in DC microgrid. Based on this stabilization criteria, a passivity-based stabilization method considering...
This work is devoted to the admissibility analysis for singular time-delay systems by using delta operator approach. By estimating the delay term with a two-term approximation, the singular system in delta operator domain is transformed into an interconnection of a time-invariant subsystem with constant delay and a uncertain one. By resorting to the input-output approach, a delay-range-dependent admissibility...
In this paper, the problem of stability for complex-valued neural networks involving both discrete and distributed delays is considered. Assuming that the activation function can be separated into its real and imaginary part, a sufficient condition is proposed for the asymptotical stability of the addressed neural networks by employing some analysis techniques. Finally, a numerical example is presented...
When designing a controller in DC Microgrid, normally the communication delay, which may cause system instability, has not been taken into account. In this paper, the effect of communication delay on system stability is studied based on a distributed control strategy. To obtain a less conservative condition for system stability, the delay-dependent stability is analyzed. In the case of time-invariant...
This paper focuses on yaw stability control of in-wheel-motored electric vehicles (EVs), a nonlinear incremental model predictive control combines the error prediction control is proposed. By inputting a suitable reference model from driver action, the controller output of EV stability tracks the input. So this problem can be described as a tracking problem under constraints. To solve tracking problem,...
An improved forward considering car-following model was proposed to describe the automated vehicle's flow behavior. A theorem was proved as a criterion for judging the stability of homogenous automated vehicles flow. The greater forward considering vehicles' number means more stability. A series of simulations were carried out to verify the new model and analyze the stability of automated flow. From...
As the walking speed of the discontinuous crawl gait of the quadruped robot is rather slow, an optimized method is proposed for improving the forward walking velocity. To ensure the walking stability, the adjustment process of the center of gravity (COG) of the robot is divided in two types, lateral movement and forward movement respectively. Based on the definition of the inner support polygon, the...
Time-delay systems disturbed by white noises were comprehensively modeled as stochastic functional differential equations in the existing literature. However, in some specific situations, they cannot always precisely describe dynamic characters of time-delay systems subject to nonwhite noise disturbances. In this paper, color noises with finite 2-order moments are introduced to time-delay systems...
In this paper, the problem of input-to-state stability robust model predictive control(MPC) is studied for the discrete time uncertain singular system with input constrain and bounded disturbances. By constructing the ISS-Lyapunov function with the method of linear matrix inequality (LMIs), the “quasi-min-max” optimization problems are converted into finite time convex programming problems. Then the...
The stability of a network is not simply determined by the stability of its nodes. Network topology and disturbances of the edge weights might lead to the significant difference of network stability. In this work, we find several topological characteristics that affect network stability. By this finding, network stabilization has been more realizable and more effective. Therefore, by removing some...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.