An approach to the reduction of contact bounce using fuzzy control

Carse, Brian; Larsen, N.; Nouri, Hassan; Davies, T.S.

doi:10.1109/isie.1999.796767

Cited by 18 publications

(12 citation statements)

References 6 publications

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“…One approach to the control of contactor bounce using fuzzy control provides, as output, a voltage which controls the closing rate of the contacts. This is an indirect control of the closing of the contactor since the attractive magnetic force is caused by the current in the coil [27].…”

Section: A Fuzzy Control Of the Contactormentioning

confidence: 99%

Closed-Loop Controller for Eliminating the Contact Bounce in DC Core Contactors

Espinosa¹,

Riba²,

Cusidó³

et al. 2010

IEEE Trans. Comp. Packag. Technol.

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Abstract-The undesirable phenomenon of the contact bounce causes severe erosion of the contacts and, as a consequence, their electrical life and reliability are greatly reduced. On the other hand, the bounce of the armature can provoke re-opening of the contacts, even when they have already been closed. This paper deals with the elimination of the bounce in both contacts and armature of a commercial dc core contactor. This is achieved by means of a current closed-loop controller, which only uses as input the current and voltage of the contactor's magnetizing coil. The logic control has been implemented in a low cost microcontroller. Moreover, the board control can be fed by either dc or ac, and either in 50 Hz or 60 Hz so as to extend its applicability. A set of data is obtained from the measurement of the position and velocity of the movable parts for different operating voltages, and the dynamic behavior of the contactor is discussed.

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Section: A Fuzzy Control Of the Contactormentioning

confidence: 99%

Closed-Loop Controller for Eliminating the Contact Bounce in DC Core Contactors

Espinosa¹,

Riba²,

Cusidó³

et al. 2010

IEEE Trans. Comp. Packag. Technol.

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“…During the making phase of the conductor, the presence of the bouncing behavior results in producing the electric arc that causes erosion damage on the conducting surface and greatly reduced the lifespan of the conductor. Some researches proposed methods on solving this problem [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Development of a new IC-controlled interchangeable AC and DC contactor

Chi

Chao

2009

Analog Integr Circ Sig Process

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In this paper, we aim at developing an interchangeable electromagnetic contactor that essentially features with high power efficiency, low electromagnetic noise, and high power resource usage. The magnetic coils of the new IC-controlled method can be excited by AC or DC voltage and the range of the operating voltage is shown to be much larger than the conventional contactor. This leads to a wider area of applications for the new contactor. According to the electric performance requirement, the pulse width modulation (PWM), which provides the suitable energy for the exciting coils under the different operating condition, is implemented in the proposed contactor. This is resulted in a stable operation between make or break phase of the contactor and greatly reduced in the electromagnetic noise and energy loss for the exciting coils. Thus, the lifespan of operation of the contactor can be greatly extended. In order to prove the validity of the proposed IC-controlled method, several experiments had been conducted and the results are shown the feasibility and reliability of the new design.

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“…In order to reduce the rebounds and control the closing speed, some researchers have investigated lately on designing new types of the contactor electromagnetic drives supplied by electronic circuits with microprocessors [1][2][3]. Unfortunately, this solution is relatively expensive; moreover, the use of this type of drive results in the considerable increase of the contactor closing time.…”

Section: Introductionmentioning

confidence: 99%

“…For the multi-objective problem given by (1), the bargaining function B(X) which helps to determine a compromise solution amongst the k-objective functions is defined as in (2). k B(X)= I[f, -f (X)]i (2) here wi is the relative degree of importance of distinct objective function f, and fw denotes the worst value of objective function f that the designer is able to accept.…”

Section: Introductionmentioning

confidence: 99%

“…k B(X)= I[f, -f (X)]i (2) here wi is the relative degree of importance of distinct objective function f, and fw denotes the worst value of objective function f that the designer is able to accept. The worst values, fw are determined by solving k single objective optimization problem and by finding f m=maxfi(xi (3) jl, k iJ where x denotes the optimum solution of the jth objective function when solved as a single objective optimization problem.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Determination of the Best Closing Phase Angle for AC Contactor Based on Game Theory

Lü

Gao

et al. 2006

Electrical Contacts - 2006. Proceedings of the 52nd IEEE Holm Conference on Electrical Contacts

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Any contactor bounce is undesirable since this causes arcing which shortens the life of the contacts when contacts close. The rebounds and the closing speeds are different with the closing phase angle of the electromagnetic coil voltage switching on when contactors close. This paper discussed the determination of the best closing phase angle of the electromagnetic coil voltage switching on. Taking closing phase angle as optimization variable, the closing velocities of three phase contacts and armature as objectives, and taking moving velocities lower than their worst values as restrictions, the optimization model was established. Game theory was introduced and adopted to solve the multi-objectives optimization problem. Taking CJ20 AC contactor as an example, the best closing phase angle was determined by combing the calculating and testing results.

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An approach to the reduction of contact bounce using fuzzy control

Cited by 18 publications

References 6 publications

Closed-Loop Controller for Eliminating the Contact Bounce in DC Core Contactors

Closed-Loop Controller for Eliminating the Contact Bounce in DC Core Contactors

Development of a new IC-controlled interchangeable AC and DC contactor

Determination of the Best Closing Phase Angle for AC Contactor Based on Game Theory

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