We present a sliding mode based control law for stabilizing an underactuated underwater vehicle (UUV) moving in a horizontal plane. The novelty of the proposed control law is that we exploit the dynamics of the vehicl...
详细信息
We present a sliding mode based control law for stabilizing an underactuated underwater vehicle (UUV) moving in a horizontal plane. The novelty of the proposed control law is that we exploit the dynamics of the vehicle to define three sliding surfaces, at whose intersection the system is asymptotically stable. The task of the available two actuators is then to steer the system to this intersection set.
Active vibration control is one of the interesting problems for control engineers. The problem is tackled by making a smart, adaptive and self-controlling structure that requires robust controller. The newly invented ...
详细信息
Active vibration control is one of the interesting problems for control engineers. The problem is tackled by making a smart, adaptive and self-controlling structure that requires robust controller. The newly invented second order sliding mode controller (SSMC) not only retains the robustness properties of the classical sliding mode controller (SMC) but also eliminates the drawback of the SMC that is high frequency chattering due to high frequency switching. The high frequency switching can excite the unmodelled dynamics and makes the system unstable. The work presented in this paper is the second order sliding mode controller design for active vibration control of the smart structure. The controller is designed for SISO plant and also for MIMO plant. The main objective of the active vibration controller is to reduce vibration of the system using system response. The efficacy of the controller is checked at various positions of the sensor/actuator on the structure and the conclusion is drawn
The paper presents a new method for design of power system stabilizer (PSS) using discrete time power rate reaching law based sliding mode control technique. The control objective is to enhance the stability and to im...
详细信息
The paper presents a new method for design of power system stabilizer (PSS) using discrete time power rate reaching law based sliding mode control technique. The control objective is to enhance the stability and to improve the dynamic response of a single machine infinite bus (SMIB) system, operating in different conditions. The control rules are constructed using discrete time power rate reaching law based sliding mode control. We apply this controller to design power system stabilizer for demonstrating the efficacy of the proposed approach
The paper presents a new method for design of power system stabilizer based on fuzzy logic and output feedback sliding mode controller. The control objective is to enhance the stability and to improve the dynamic resp...
详细信息
The paper presents a new method for design of power system stabilizer based on fuzzy logic and output feedback sliding mode controller. The control objective is to enhance the stability and to improve the dynamic response of the single machine infinite bus(SMIB) system operating in different conditions. First, the control rules are constructed according to the concepts of output feedback sliding mode control, and the fuzzy sets, whose membership functions are defined. Then, hitting control, which guarantees the stability of control system, is developed. Finally, the hitting control is smoothed via the constructed heuristic control rules. We apply this output feedback fuzzy sliding mode controller to design power system stabilizer for demonstrating the availability of the proposed approach [J-Y Chen, 2001].
In this paper, a new approach to Fault Detection and Diagnosis that is based on Correspondence Analysis is proposed. Correspondence analysis is a powerful multivariate technique based on the generalized singular value...
详细信息
In this paper, a new approach to Fault Detection and Diagnosis that is based on Correspondence Analysis is proposed. Correspondence analysis is a powerful multivariate technique based on the generalized singular value decomposition. The advantage of using correspondence analysis is that it depicts rows as well as columns as points in the dual lower dimensional vector space. Correspondence analysis has been shown to capture association between various features and events quite exoectively. In this paper, the correspondence analysis approach is used for Fault Detection and Diagnosis (FDD) and is validated on representative process systems.
This paper presents the design of state charts for 4 types of systems, viz., a voice-mailing system, a washing machine, a microwave oven and a fax system. Once the state chart is drawn, a software is designed which wi...
详细信息
With the coming of microprocessor and associated peripheral chips, the whole process of control and automation has underwent a radical change. Instead of achieving the desired control or automation through physical wi...
详细信息
As neural networks are parallel machines, they hold great promise for solving complex problems. Due to the ability of neural networks to approximate arbitrary non-linearities, neural networks play a vital role in cont...
详细信息
As neural networks are parallel machines, they hold great promise for solving complex problems. Due to the ability of neural networks to approximate arbitrary non-linearities, neural networks play a vital role in control field. To implement a neural network based predictive control, dynamic modeling of the process is required. The developed dynamic model is used to predict the output and try to minimize the difference between the predicted outputs and desired trajectory. A neural network based predictive control is implemented for a PMTD process
Power system stabilizers (PSSs) are added to excitation system to enhance the damping of low frequency oscillations. In this paper, the design of PSS for multimachine power system (MMPS) using output feedback sliding ...
详细信息
Power system stabilizers (PSSs) are added to excitation system to enhance the damping of low frequency oscillations. In this paper, the design of PSS for multimachine power system (MMPS) using output feedback sliding mode control is proposed. The nonlinear model of a multimachine power system is linearized at various operating points and the linearized model of the plant is obtained. The multirate output feedback sliding mode controller is designed and is applied to nonlinear plant model of the multimachine power system at those operating (equilibrium) points. This method does not require the complete states of the system for feedback and is easily implementable
We consider the problem of computing the frequency response of a non-rational transfer function having uncertainties in the parameters. A complete characterization of the frequency plots of such a transfer function is...
详细信息
We consider the problem of computing the frequency response of a non-rational transfer function having uncertainties in the parameters. A complete characterization of the frequency plots of such a transfer function is provided and an efficient and guaranteed algorithm for computing the envelope of the Bode plot using interval analysis (IA) is devised. In particular, it is shown that the range enclosure property of the interval analysis can be used to compute the Bode envelopes of the non-rational transfer function with parametric dependencies. The range enclosures computed using IA are guaranteed to contain the minima and maxima of the function over a given box. The IA is combined with uniform subdivision technique to obtain the range enclosures of desired accuracy. We also show, how the well known Richardson extrapolation technique helps in accelerating the convergence process of the algorithm.
暂无评论