Drive electrical parameters applicability evaluation to determine loads on bridge crane lifting mechanism

Иванов, С. Д.; Назаров, А. Н.

doi:10.26518/2071-7296-2022-19-1-36-47

Cited by 3 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…В качестве экспериментальной установки использован двухбалочный мостовой кран КМГ-201 6 , установленный в лаборатории кафедры «Подъемнотранспортные системы» МГТУ им. Н. Э. Баумана [14]. Механизм подъема приводится в движение электродвигателем с короткозамкнутым ротором.…”

Section: основные параметры экспериментальной установкиunclassified

“…Способ учета движущего усилия двигателя 4 в известных динамических моделях не позволил описать часть введенных расчетных случаев с требуемой точностью 5 , а часть вовсе [12,13,14].…”

Section: Introductionunclassified

“…При подъеме с веса в большинстве динамических моделей [7,10,11,12,14] движущее усилие двигателя на неустановившейся части механической характеристики принимается равным среднепусковому усилию, что, с одной стороны, позволяет сохранить возможность получения аналитического решения во время переходного процесса, но, с другой стороны, снижает точность описания динамических нагрузок и кинематических характеристик.…”

Section: Introductionunclassified

“…По этой причине движущее усилие двигателя учитывается линейной исимостью от текущей скорости двигателя. При подъеме с веса в большинстве динамических моделей [7,10,11,12,14] движущее лие двигателя на неустановившейся части механической характеристики принимается ным среднепусковому усилию, что, с одной стороны, позволяет сохранить возможность учения аналитического решения во время переходного процесса, но, с другой стороны, жает точность описания динамических нагрузок и кинематических характеристик. В динамической модели Н. А. Лобова [15] и моделях, построенных на ее основе, движущее лие двигателя описывается согласно статической механической характеристике по формуле ] = 2𝑥𝑥𝑥𝑥 ̇с; 𝛼𝛼𝛼𝛼 -коэффициент, указывающий часть механической характеристики, на которой работает ктродвигатель; 𝛼𝛼𝛼𝛼 = 0 для работы на линейной части установившейся ветви механической актеристики; 𝛼𝛼𝛼𝛼 = 1 для работы на любой ветви механической характеристики.…”

Section: Introductionunclassified

See 3 more Smart Citations

Motor driving force of bridge-type crane lifting mechanism under real operating use

Назаров

2023

Vestn. SibADI

Self Cite

View full text Add to dashboard Cite

Introduction. The requirement for modelling the dynamic processes of a hoisting mechanism in real operating situations has been revealed. The necessity of increasing the accuracy of moving effort description for the most common types of crane hoist drive control has been determined.Materials and Methods. The operation of a single-speed electric motor with squirrel-cage rotor without speed control, with a phase rotor and additional resistors in the rotor winding and with a squirrel-cage rotor and control by a frequency converter has been considered. The static characteristic of the electric motor is taken as the initial function. The Clauss formula with the corresponding values of the parameters synchronous speed, critical force and critical slip was used to take into account the driving force of the motor for frequency control and for relay-contactor control and a motor with a phase-rotor and additional resistances in the rotor circuit.Results. The dependences for the motor driving force with the most common methods of speed control of the crane hoisting mechanism drive are presented. In the case of the frequency control system, the form of the motor driving force is given in the case of steady-state motion and in the case of transient starting/braking processes when the corresponding algorithms are implemented by a frequency converter. Experimental and theoretical graphs of the load lifting processes for the cases of lifting with pickup in the relay-contactor control system and with elastic pickup in the frequency control system are given.Conclusion. The conclusion about applicability of static mechanical characteristic for description of electric motor operation in crane drives is given. The presented dependences provide an opportunity to model the full working cycle of the hoisting mechanism. The dependences are valid both during steady motion of the mechanism and during transients. It is concluded about the use of the dynamic model taking into account the presented form of the motor driving force for practical purposes for the analysis of the crane operation with regard to the effect of the lifting capacity limiter.

show abstract

Section: основные параметры экспериментальной установкиunclassified

Section: Introductionunclassified

See 2 more Smart Citations

Motor driving force of bridge-type crane lifting mechanism under real operating use

Назаров

2023

Vestn. SibADI

Self Cite

View full text Add to dashboard Cite

show abstract

“…Для распознавания аварийного превышения массы груза возможно использовать методы косвенного контроля, в том числе анализ динамического состояния приводных электродвигателей [13,14]. Методы косвенного контроля массы груза в процессе подъема для кранов различного назначения описаны в [15][16][17] для мобильного, башенного и мостового кранов соответственно.…”

Section: аннотация в статье рассматриваются процессы изменения величи...unclassified

Untitled

2023

Gorn. oborud. èlektromeh.

View full text Add to dashboard Cite

Use of weight measurement algorithm on the basis of moving average filter in the recorder of overhead crane operation parameters

Nazarov,

Ivanov

2023

Vestn. SibADI

Self Cite

View full text Add to dashboard Cite

Introduction. The problem of primary information low quality of crane operation parameters recorders is analyzed. The accepted direction to improve the quality of information about the mass of the cargo is to improve the algorithm of weight measurement. Shortcomings of algorithms of serially produced parameter recorders are described. The design of the algorithm based on the moving average filter is proposed.Materials and Methods. The principle of operation of the proposed weight measurement algorithm is described. The algorithm consists of preliminary (determination of the dynamic process section suitable for weight measurement, calculation of the smoothing window length) and main stages (application of filter, calculation of mass and measurement error). Two methods for determining the length of the smoothing window are given. The parameters of the overhead crane, load cell and motor speed sensor used in the experimental part are given.Results. Graphs of lifting mechanism force and motor rotation speed at the moment of weight measurement are given. The work of the steady-state motion control function is shown. The results of algorithm operation at fixed measurement accuracy of 3% with determination of algorithm operation time and fixed algorithm operation time of 10 seconds with determination of measurement accuracy are given.Discussion. The time of weight measurement with the accuracy required for parameter recorders was 2...5 seconds. Increase in speed of weight measurement is achieved due to adjustable parameters of the algorithm at each switching on of the lifting mechanism. For cranes with duration of lifting time continuously more than 10 seconds the algorithm allows to calculate the mass of the load with an accuracy of 1%. This ensures the accuracy of the crane intensity indicators with an accuracy of 3%.Conclusion. Evaluation of accuracy and time parameters showed the applicability of the developed algorithm of weight measurement in the task of determining the mass of the load to recorders of crane operation parameters. The advantage of the developed algorithm is the guaranteed accuracy of weight measurement. The algorithm of weight measurement allows to adapt the parameter recorder to the technological process of crane operation and effectively use the areas of the dynamic process suitable for measurement.

show abstract

Drive electrical parameters applicability evaluation to determine loads on bridge crane lifting mechanism

Cited by 3 publications

References 9 publications

Motor driving force of bridge-type crane lifting mechanism under real operating use

Motor driving force of bridge-type crane lifting mechanism under real operating use

Untitled

Use of weight measurement algorithm on the basis of moving average filter in the recorder of overhead crane operation parameters

Contact Info

Product

Resources

About