PECS-an efficient solution for simulating switched networks with nonlinear elements

Li, D.; Tymerski, R.; Ninomiya, Tamotsu

doi:10.1109/41.915415

Cited by 12 publications

(4 citation statements)

References 30 publications

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“…These researches focus the control on the suppression of load swing, but did not solve the problem of position error at the end of crane motion [15]. Some fuzzy-based methods [15][16][17][18][19] were also proposed to control the crane. Unfortunately, such fuzzy controllers cannot provide the desired performance for the crane system, due to the uncertainty and large disturbances of the fuzzy system, reducing the working efficiency.…”

Section: Introductionmentioning

confidence: 98%

Overhead cranes fuzzy control design with deadzone compensation

Chang

Chiang²

2009

Neural Comput & Applic

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This article proposes a simple but effective way to control 3D overhead crane. The proposed method uses PID control at the start for rapid transportation and fuzzy control with deadzone compensation when the crane is close to the goal for precise positioning and moving the load smoothly. Only the remaining distance and projection of swing angle are applied to design the fuzzy controller. No plant information of crane is necessary in this approach. Therefore, the proposed method greatly reduces the computational efforts. Several experiments illustrated the encouraging effectiveness of the proposed method through a scaled 3D crane model. The nonlinear disturbance, such as abrupt collision, is also taken into account to check the robustness of the proposed method.

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Section: Introductionmentioning

confidence: 98%

Overhead cranes fuzzy control design with deadzone compensation

Chang

Chiang²

2009

Neural Comput & Applic

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“…This method is used because it converges fast and is suitable for matrix state-space system's representation [4].…”

Section: Internal Switchingmentioning

confidence: 99%

“…Piecewise-linear simulators [4] assume a switching converter with its linearized model for each state of the switch, being on or off. However, not every type of switching is possible in circuits and the operation state (mode) of the converter cannot be easily checked.…”

Section: Introductionmentioning

confidence: 99%

Simulation of PWM DC-DC converters using eigenvalues and eigenvectors

Lekić

2017

Journal of Electrical Engineering

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In this paper, a time-domain simulation of the DC-DC converters' dynamic behavior is described. Corresponding to the state-space model for each possible operation mode of the circuit, an analytic solution is provided. Converter's regulator is discretized using the pole-zero placement technique based on its Laplace transfer function. An algorithm results in a very accurate simulation due to the exact solution of the circuit's equations.

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“…The convergence problems occur in Newton Raphson iteration over nonlinearity [2], and they frequently follow simulations in power electronics since the essentially discontinuous waveforms encountered there cause the initial guess for the Newton-Raphson iteration to be poor in the vicinity of switching transitions. To overcome some of the problems mentioned, special simulation techniques for power electronic circuits have been developed [3,4]. The methods are primarily based on piecewise linear device models, and avoid iteration over nonlinearity.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Power Electronic Converters Using Quasi Steady State Approximation

Pejović¹

2012

ELS

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Abstract-A new method to compute voltage and current waveforms of power electronic converters is proposed in the paper. The method relies on simulation result of averaged circuit model, and superimposes the ripple of the inductor currents to the obtained average values, assuming that the linear ripple approximation applies. To determine the amplitude of the switching ripple, a quasi steady state approximation is proposed. After the inductor currents are obtained, currents of switching components are computed by multiplying them with appropriate switching functions. The algorithm provides an efficient tool to generate the converter waveforms in order to compute their spectra, mean and RMS values, which are of interest in designing filters and estimating converter losses.

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PECS-an efficient solution for simulating switched networks with nonlinear elements

Cited by 12 publications

References 30 publications

Overhead cranes fuzzy control design with deadzone compensation

Overhead cranes fuzzy control design with deadzone compensation

Simulation of PWM DC-DC converters using eigenvalues and eigenvectors

Simulation of Power Electronic Converters Using Quasi Steady State Approximation

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