SU949331A1

SU949331A1 - Apparatus for measuring moving band material elongation

Info

Publication number: SU949331A1
Application number: SU792716601A
Authority: SU
Inventors: Руслан Иванович Батырев; Владимир Борисович Муляр; Надежда Исааковна Сарбатова; Геннадий Яковлевич Эстрайх; Леонид Аронович Рубинштейн; Владислав Александрович Леонтьев; Павел Васильевич Зобнин
Original assignee: Предприятие П/Я В-2262
Priority date: 1979-01-24
Filing date: 1979-01-24
Publication date: 1982-08-07

Description

(5) УСТРОЙСТВО дл ИЗМЕРЕНИЯ ВЫТЯЖКИ ДВИЖУЩЕГОСЯ ЛЕНТОЧНОГО МАТЕРИАЛА(5) DEVICE FOR MEASURING THE EXTRACT OF A MOVING BELT MATERIAL

1one

Изобретение относитс к измерительной технике и может быть примене .но дл контрол при производстве и , обработке движущегос полотна,например бумаги.The invention relates to a measurement technique and can be used to control the production and processing of a moving web, such as paper.

Известно устройство дл измерени выт жки движущегос материала, содержащее измерительные ролики и преобразователь относительного поворота роликов 1 A device for measuring the draw of a moving material is known, comprising measuring rollers and a transducer for relative rotation of the rollers 1

Недостатком устройства вл етс невысока точность измерени .The drawback of the device is the low measurement accuracy.

Наиболее близким к изобретению по технической сущности и достигаемому эффекту вл етс устройство дл измерени выт жки движущегос ленточного материала, содержащее два датчика скорости, устанавливаемые до и после участка выт жки и предназначенные дл контакта с движущимс материалом, и блок вычитани 2.Closest to the invention in terms of its technical essence and the effect achieved is a device for measuring the stretching of a moving tape material, containing two speed sensors, installed before and after the stretching section, and intended to come into contact with the moving material, and a subtraction unit 2.

Недостатком устройства вл етс невысока точность измерени выт жки , как выт жка равна относительной разности скоростей лишь в установленном режиме.The drawback of the device is the low measurement accuracy of the exhaust, as the exhaust is equal to the relative velocity difference only in the set mode.

Цель изобретени - повышение точности измерени .The purpose of the invention is to improve the measurement accuracy.

Поставленна цель достигаетс тем, что устройство снабжено интегратором , блоком умножени и блоком делени , первый вход которого соединен с выходом блока вычитани ,второй - с выходом интегратора, вход блока вычитани сЪедин н с выходом интегратора, первый вход которого соединен с выходом блока умножени , второй - с выходом первого датчика скорости, первый вход блока умножени соединен с выходом второго датчика скорости, второй - с выходом интегратора, а выход блока делени вл етс выходом устройства.The goal is achieved by the fact that the device is equipped with an integrator, a multiplication unit and a division unit, the first input of which is connected to the output of the subtraction unit, the second - to the output of the integrator, the input of the subtraction unit of the United States to the output of the integrator, the first input of which is connected to the output of the multiplication unit, the second - with the output of the first speed sensor, the first input of the multiplier unit is connected to the output of the second speed sensor, the second one - with the integrator output, and the output of the dividing unit is the device output.

На чертеже показана блок-схемаThe drawing shows a block diagram

Claims

the proposed device. 3З A device for measuring the drawdown of a moving tape material contains a sensor 1 input speed, sensor 2 output speed, unit 3 multiplication, subtraction unit, integrator 5 and block 6 dividing. The device works as follows. Provided there is no slipping between the moving web and the sensors, the difference in the readings of sensors 1 and 2 is due to the stretching of the web in this area. The signal from sensor 1 is fed to the first input of the integrator 5 directly, the signal from sensor 2 after multiplying it in block 3 multiplying with the output signal of the integrator 5. At the output of the integrator 5, a signal appears whose value is determined by the expression, a. where L. is the length of the area under consideration; Vj, Vo SPEED at the entrance and you course the plot; - relative length of unstretched cloth; t time Next, the signal from the output of the integrator 5 is fed to the subtraction unit where it is subtracted from the normalized signal, and then this difference goes to the division unit 6. The signal from the output of integrator 5 will sink there. In block 6 of magnitude relative to the relative length of the unstretched web K, the stretching f.ldl is determined. t- (The proposed device allows a high accuracy (up to 0.1% to measure the stretching of the web, as well as to ensure its more rigid stabilization by creating a direct system for stretching exhausting. Invention Apparatus for measuring the stretching of moving tape material comprising two speed sensors, installed upstream from the stretch section, designed to contact the moving material, and a subtraction unit, characterized in that, in order to improve the measurement accuracy, it is equipped with an integrator, a multiplication unit and a dividing unit, the first input of which is connected to the output of the subtraction unit, the second one - with the output of the integrator, the input of the subtraction unit is connected to the output of the integrator, the first input of which is connected to the output of the multiplication unit, the second - to the output of the first speed sensor, the first input of the multiplication unit is connected to the output the second speed sensor, the second one with the integrator output, and the output of the dividing unit is the device output.Sources of information taken into account in the examination 1. SI Rybnikov, Automatic control of the winding. ., Energie, 1977, p. 15, Fig.9. USSR author's certificate W 2k2kQ5, cl. G 01 B 7 / Oi, 19b7 (prototype).