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The paper firstly establishes a port-controlled Hamiltonian dissipation (PCHD) based model of a direct-drive permanent magnet synchronous generator (D-PMSG). A new double loop control of the D-PMSG is proposed with the outer speed loop controlled by a non-singular higher-order terminal sliding mode (NHTSM) controller to undertake maximum wind power point tracking (MPPT). In the inner current control...
Recently, devices for manufacturing semiconductor products require plasma. Plasma is generated by two types of high frequency power, a High/Low and an ON/OFF output. A power supply, which can output the high frequency power is required to be more efficient and more compact. In order to achieve high frequency output with the High/Low pulse, the output capacitance in a power supply should be reduced...
This paper proposes a reduction method of stochastic disturbance that is focused on haptic information in the micro space. Presently in the industry, haptic information is attracting attention as the tertiary media following audio and visual information. Haptic information has characteristics of bidirectionality and scaling that extended human ability by using master and slave robots. Especially,...
Modular multilevel converter (MMC) is a promising multilevel topology for high-voltage applications that has been developed in recent years. The control of MMCs has been analyzed in detail in many papers, showing that the converter capacitors can be kept charged and balanced by controlling the circulating current of each leg. The set-point signal of the circulating current is probably the most difficult...
A fully instrumented surface vessel involving underactuated structure was designed. The problem of straight line course tracking of the underactuated surface vessel at a constant forward speed is addressed. The Serret-Frenet frame is used to define the tracking error, therefore the position tracking errors could be stabilized by stabilizing the single distance error. Least Squares Support Vector Machines...
This paper aims to introduce generalized statespace models of power plant gas turbine system. Once verified, those models can be used in system real-time monitoring and control of power plants. The models are of generalized statespace structure and their parameters are optimized from normal operating records first using subspace identification method. Then those results are compared with the identified...
Compartmental models are widely used in in many fields of science including pharmacokinetics, epidemiology, bioengineering, complexity theory, and even economics and the social sciences. The reason of such a success lies in their ability to describe the way materials or energies are transmitted among the compartments. Often, it is assumed that these exchanges depend linearly on the compartments. However,...
A novel supercapacitor module using input-series and output-series configuration of flyback converters is proposed in this paper. First, the working principles under charging and discharging process are analyzed. Second, the design pattern of the flyback converter and the control system of the module are discussed. The proposed control system uses one set of peak current control circuit to control...
A nonsingular terminal sliding mode control strategy with constant switching frequency for the voltage regulator of doubly salient electro-magnetic generator has been proposed in this paper. Next, operating principle for the terminal sliding mode controller was described in detail and the stable condition of the system was deduced by Lyapunov function based on mathematical model and working principle...
The simple adaptive-robust control algorithm for time-invariant uncertain linear plants is proposed. Only scalar input and output of the plant are available for measurement. Algorithm provides tracking of a plant output to a reference signal with required accuracy. Simulations results illustrating an efficiency of proposed scheme are presented.
This paper proposes a design mainly using of model predictive control for the chained non-holonomic systems. Reorganising the chained system into two subsystem, combine a exponential decaying term to deal with the uncontrollable which carry by the vanishing of u1. After state scaling transformation, a model predictive control (MPC) method is developed for the chained systems. The MPC method iteratively...
This paper presents a new design methodology of multivariable Smith predictor for stable 2×2 time delay processes based on the centralized inverted decoupling structure. The controller elements are calculated in order to achieve good reference tracking and decoupling response, and the obtained general expressions result very simple. The realizability conditions are stated and the particular case of...
In this paper, we study the finite-dimensional stabilization problem of the cascade consisting of the one-dimensional transport-diffusion process and an unstable Ordinary Differential Equation (ODE) plant, where the ODE plant is connected with the transport-diffusion process through a filter. The input to the whole system is only Dirichlet boundary input to the transport diffusion process, and the...
Inverted pendulum is a nonlinear, multivariable and instability system. In the past, without considering the effects of measurement noise and output noise of the sensor in the processing of inverted pendulum control, the strong random jitter occur, and the control accuracy and stable of the inverted pendulum is reduced. Because the Kalman filter can estimate the signal is corrupted by the noise, the...
Constant voltage generation for a wide speed and power range of PMSM(Permanent Magnet Synchronous Motor) control system is widely employed in separate power supplies. This paper presents a analysis of inner current and outer voltage double closed loops control strategy and the influence of PI parameters on system stability through establishing small signal model. Using it as a base, a control strategy...
Location tracking control system is developed for an unmanned small scale helicopter using sliding mode controller and cascade controller. The developed control system consists of an inner loop and outer loop. The inner loop control system determines the attitude of the helicopter based on the equation of motion with sliding mode controller. The outer loop control system based on the linear model...
Considering nonlinear and energy dissipation characteristics of STATCOM, realization of the generalized Hamiltonian system based on the model of system, and design nonlinear controller. This paper discussed the generalized Hamiltonian system and its realization, and established nonlinear dynamic model according to the work principle of STATCOM, completed realization of the generalized Hamiltonian...
Contact scanning scanners system can check deterioration of structure and inside matter during the production process. However, in case of high-speed scanning, oscillation occurs in the sensor part due to unevenness and friction on the measured surface. To overcome the problem, we have proposed an oscillation control scheme for scanning scanners system. In this paper, to show usefulness of the proposed...
This paper introduces a general method to transform dynamic system models between two-axis reference frames that are rotating at different angular frequencies. Such a transformation is needed in the analysis and implementation of a control system where the entire system is not presented in the same reference frame. Detailed derivation of the transformation for transfer function matrices is presented...
This paper presents two new design methods for self-repairing control systems (SRCSs) based on nonlinear high-gain feedback. The SRCS can replace the failed sensor with the back-up. For self-repairing against sensor failures, the nonlinear detection filter is utilized, that has a finite escape time if the sensor fails. Monitoring the diverging signal from the detection filter makes it possible to...
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