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.
A crank slide-way mechanism is a kind of mechanisms between crank slide mechanisms and crank rocker mechanisms, the main difference is that: in the same case of taking uniform speed as input, the output is neither linear displacement nor the arc path, but a specifically curve. So in some cases, A complex output path can be realized when kinematical curves with special shapes have been accepted. The...
The permanent magnet synchronous motor (PMSM) is increasingly playing an important role in alternating current(AC) transmission system. Recently, lots of researches have been investigated for the PMSM system without speed and position sensors. The Vector-control system based on fuzzy self-tuning PID is proposed in this paper. The new algorithm based on fuzzy self-tuning PID can improve the performance...
New analytical equations are proposed for oscillation amplitude of the MOS Colpitts oscillator. These equations are obtained from a large signal analysis. The analysis is based on a reasonable estimation for the output waveform. The estimated waveform should satisfy the nonlinear differential equations governing the circuit. The validity of the resulted equations is verified through simulations using...
Mathematical equations are possible to simulate with various electronic circuits. Inductors and capacitors intrinsically are capable of integrating and differentiating, and active components alone can realize such algebraic operations as addition and multiplication. In this work, linear differential equations are shown to be implemented with three active components, namely operational amplifiers(Opamp),...
Linear design methods for state-quantity observers are used dominantly for power-electronic systems. The main reasons are the problems related to advanced approaches - namely complexity and the high time effort of the necessary stability prove and the design process. In observer and control design, the special characteristics of power-electronic systems are often neglected. The robustness and the...
In this paper, we develop a state observer in order to estimate the velocity of a ball and angular velocity of a motor. With the observer, we propose a sliding mode controller where sliding surface consists of some measured and estimated states. Then, a new rigorous analysis will be done to show the behavior of the system on the sliding surface. We show the stability analysis and convergence analysis...
In order to improve the performance of three phase voltage source PWM rectifiers, this paper presents a passivity-based control (PBC) strategy based on port-controlled Hamiltonian with dissipation (PCHD) model established from the rectifierspsila power circuit. With the model, a passivity-based controller for PWM rectifiers is designed by using Inter-connection and Damping Assignment passivity-based...
Taking Matlab/Simulink as a platform, a single-machine infinite-bus system simulation model of AC excited generator (ACEG) is established. The stator flux oriented vector control strategy and direct power control strategy of ACEG are proposed in this paper. With this model of ACEG, the steady state regulation characteristics of active power and reactive power and the transient processes of a sudden...
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.