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The article resolves the problem of examining the possibilities for analytically synthesized regulators use to control a standard production facility with a time delay subjected to random perturbations. We synthesized various kinds of astatic system polynomial controllers for the automatic production facility control. During synthesis, the delay element is represented by the 3rd and the 1st order...
This paper deals with features of robust two-degree-of-freedom system assigned for stabilization of information and measuring systems operated on the ground vehicles in difficult conditions accompanied by influence of the parametric and coordinate disturbances. The optimization criterion and state space model of the augmented plant are derived. The design procedure of robust system for stabilization...
Transfer functions and equivalent transformed structures of observed-based linear time-invariant control systems with the deterministic unmeasured disturbance have been found. They allow to simplify analysis of these systems. To determine the transfer functions used in formulas for the cell matrix.
This paper proposes a dual closed-loop control system for a doubly salient permanent magnet generator (DSPMG). The current loop, as well as the voltage loop, both employ gain scheduling PI controller based on the linearized model of the DSPMG and the drive circuit. In addition, a back-EMF compensator has been implemented to reduce the bandwidth requirements on the controller. Two different design...
The problem of external disturbances rejection is considered for control systems of marine ships steered by autopilot under the action of sea wave disturbances and bias terms. The essence of the problem is to find mathematical models of adjustable corrective items for control law with a special structure, to provide desirable values of correspondent functionals, which characterize accuracy and intensity...
In this paper, an extended version of the FOTF Toolbox is presented which can be used to handle multivariable fractional-order transfer function matrices. A good interface is provided on top of the well-established MFD (Multivariable Frequency Design) Toolbox, which enables the users to perform frequency domain analysis and design of linear fractional-order systems. An illustrative example is also...
The paper is devoted to the desired model method. It is simple and effective controller tuning method which allows tuning of conventional analog and digital controllers for controlled plants with time delay for the desired relative overshoot. Its derivation is described in detail and the detailed analysis of its properties is performed. The use of the desired model method is shown in the example.
The disturbance in chemical process is complex and has the multiple characteristics, and the control performance assessment of multivariable system with multiple disturbances is one of the hot topics. In this paper, the control performance assessment method of multivariable systems, based on multi-time-variant-disturbances mixing generalized minimum variance (MMGMV), is proposed. Firstly, the generalized...
A new decoupling internal model controller design method was proposed for the decoupling problem of the multivariable time-delay systems in industrial processes. This method is based on the adjoint matrix of the controlled object model. According to the basic principle of inversion, decoupling compensator is designed firstly, and then the internal model controller is designed for the decoupling generalized...
In continuous-flow and continuous-process industrial manufacturing equipment, the dynamic accuracy properties of electric drive system and qualities technology are the first important criteria queue. These particular criteria are the cruciality of optimizing process with a general criterion and directly related to dynamic properties of the electric drive system, bandwidth of mechanical control systems...
There is a common trend towards developing low-cost introductory control laboratory equipment. Successful implementation of low cost platforms has many benefits, including easier adoption and maintenance. However, cheaper equipment can also confuse the relationships between theory and the real world due to the limitations of the hardware. These include, but are not limited to, low resolution encoders,...
Hydraulic elevators are widely used in the world because of their simple structure, smooth running and comfortable ride, This paper presents a conventional PID controller and a self-tuning Fuzzy PID controller to control speed of elevator, their performance are compared by analyzing their step response curves, track-feature, error curves as well as ideal speed response curves. Simulation results show...
Complex-valued dynamics can be used for modeling rotationally invariant two-input two-output systems and bandpass systems when they are considered in the baseband. In a few instances, control design has been done in the complex domain, which facilitated analysis and synthesis. While previous work has been application specific, we will discuss more generally how complex valued dynamics arise, basic...
Application of fractional order proportional-integral-derivative-acceleration PIλDμA controller to a bioreactor is presented and studied in this paper. The fractional order PIλDμA controller is an integer order PIDA controller whose integral and derivative orders are fractional numbers rather than integers. Design stage of the fractional order PIλDμA controller consists of determining six parameters...
According to classical control theory my idea In basic first order system discuss impulse response and energy spectral density of first order system transfer function. If system under damped condition impulse response is an energy signal. Hence determine energy and energy spectral density of impulse response. After discussion Its impulse response and energy spectral density are a probability distribution...
This paper investigated the voltage control of V2G (Vehicle-to-grid) system in the off-grid mode. The control method based on voltage differential feedback and repetitive controller was proposed. The novel method based on Rectangular-Trapezoidal was proposed to implement differential discretization. An improved repetitive controller with a novel phase lead compensator is presented and leads V2G system...
This paper employs the design of controllers for magnetic levitation system (Maglev) in Simulink as well as real-time. Since Maglev is one of the most nonlinear and unstable system, which has to be linearized at an equilibrium point. So for obtaining a linearized transfer function model, local linearization around that equilibrium point (−1.5V) has been performed. In this article, the integral-tilted...
An existing method for tuning a generalized predictive control (GPC) law using desired closed-loop transfer functions is applied to preview systems. In the context of preview systems, it is supposed that future values of the reference signal are available a number of time steps ahead. This information can be used to reduce the error between the reference signal and the measured output by adding an...
Fractional-Order Proportional-Integral-Derivative (FOPID) controllers presents a natural extension to PID controllers, which have been used profusely in industrial control systems, and are of great practical preference. This paper presents an implementation of FOPID control in an industrial distributed control system (DCS) that is used here for level process control. The setup is composed of ABB DCS...
The paper describes the procedure to decouple TITO (two input two output) system. The objective is to reduce the complications due to loop interaction in input and output variables and convert it into FOPDT (first order plus time delay) system. Then, for decoupled system PID controller is designed independently based on gain and phase margin algorithm. The performance of system is verified using simulation...
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