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The electronic throttle control (ETC) of an intake air control system for a gasoline engine is a typical nonlinear system because of its discontinuous nonlinear spring and model-parameter changes caused by external environmental variables. In this paper, we propose the use of an expanding sliding mode control (ESMC) in order to improve the responsiveness of the ETC and so realize higher intake-air...
In order to explain the phenomena of swarm systems form a synchronization behavior, a simple style of Boid model- Vicsek model is adopted. Vicsek model establish a mathematical model of the swarm agent's synchronization. The self-organization regulations have been proposed to aim directly at three components: flock centering, direction coincidence, collision avoidance. We attempt to show the reasons...
In this paper, we propose a linear consensus protocol for networked multiagents. Different from the other protocols proposed before, it uses a state space form which can take the dynamics of the agents into account in a natural way. To deal with switching communication topology, the whole group dynamics is regarded as a time-varying system. Directed networks and undirected networks are both covered...
This paper presents a design of residue amplification circuit (MDAC) used in the first 1.5-bit pipeline stage of an ADC, and the MDAC should meet requirements of a 100MS/s 14-bit pipeline ADC with 1.8V supply voltage. In order to obtain the corresponding performance, the circuits such as operational amplifier and bootstrap circuit are designed which could realize the objective of high-speed and high-resolution...
It requires accurate synchronization among the MCU, servo controllers and sensors in CNC systems for time stamping of data and motion control. This paper presents the design and implementation of time synchronization for CNC systems which employ switched Ethernet as its communication module. The method adopts the clock of switches as the master clock instead of that of MCU which usual is. To obtain...
To improve maneuverability, dynamic configurability and functional integration level of scene simulation system, the method on how to integrate Vega Prime into MFC programming framework, and how to forward messages coming from windows of Vega Prime to message loop of application program based on MFC are proposed in this paper. Furthermore, switch for multiple scenes in a simulative system is introduced...
Algorithms for dynamic resource allocation in OFDM based wireless systems, known as Rate Adaptive optimization (RA), aim at maximizing the minimum rate of a user while satisfying a power constraint. Nowadays we can communicate with people who are at the most remote places. This has become possible thanks to the fact that technologies for mobile communications are continuously developing: from the...
In the network control system (NCS), stochastic network time-delay makes the system performance reduction and even instability. For the issue of compensation for network time-delay, this paper launced a switching control strategy based on the building of switching model of the NCS, which means to switch to a different controller according to the different intervals where network time-delay fall into...
In this paper, we discuss the modeling and control of a class of networked control systems (NCSs) with packet dropouts. For the case that there may be packet dropouts in both the backward and the forward channels in the communication network, the closed-loop NCSs is modeled as a discrete time switched system with four subsystems. By using the average dwell time method, sufficient conditions for the...
In this paper a hybrid controller for wheel slip ratio control has been designed base on a quarter vehicle model. The proposed controller is a combination of a sliding mode controller (SMC) with a fuzzy controller to improve sliding mode controller efficiency. Three different sliding mode controllers are compared and the best one of them combined with a fuzzy controller to increase controller performance...
Saber simulation software is one of the most powerful power electronic simulation software in the world. A typical three-phase PWM rectifier is in order to investigate the EMI. In this paper, the lumped equivalent circuit model of DM EMI is analyzed and a simple equivalent circuit is proposed. Through the simulation we can get time-domain analysis, and obtain frequency-domain analysis after FFT. The...
According to the nonlinear and parameter time-varying characteristics of vehicle stability control, a sliding control algorithm is proposed based on radial base function (RBF) neural network. The algorithm not only can reduce the chattering caused by the conventional sliding mode, but also improve the robust of the adaptive neural network control. The simulation results show the algorithm ensures...
Transfer functions of n zones and arbitrary ki on the time-sharing working mode of the multi-zone space crystal growth furnace made in china were constructed. Taking two and three zones with equal time-sharing mode for example, the static characteristics while s = 0 and transient properties while ω = 2π were offered and Comparisons with zero-order holder were made. At last, conclusions that the time-sharing...
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