SU664100A1

SU664100A1 - Rpm transmitter

Info

Publication number: SU664100A1
Application number: SU772522578A
Authority: SU
Inventors: Владимир Николаевич Глушенков
Original assignee: Предприятие П/Я В-8542
Priority date: 1977-08-15
Filing date: 1977-08-15
Publication date: 1979-05-25

Description

1one

Изобретение относитс к бесконтактным датчикам импульсов дл определени и регулировани скорости вращени электродвигателей и может быть использовано во всех установках, оборудовании и приборах где необходимо получать последовательность электрических импульсов, пропорциональную скорости вращени , а также в качестве конечных переключателей в устройствах перемещени .The invention relates to contactless pulse sensors for determining and controlling the speed of rotation of electric motors and can be used in all installations, equipment and devices where it is necessary to obtain a sequence of electric pulses proportional to the speed of rotation, as well as end switches in displacement devices.

В насто щее врем широко используютс датчики оборотов скорости вращени и механических перемещений (11.Nowadays, rotation speed and mechanical displacement sensors are widely used (11.

Они, однако, не могут контролировать ЧИСЛО оборотов при больших скорост х механических перемещений.However, they cannot control the NUMBER of revolutions at high speeds of mechanical movements.

Наиболее близким по технической сущности к изобретению вл етс индуктивный датчик механических перемещений дискретного действи 2. Датчик выполнен на блокинг-генераторе с дополнителкными обмотками, улучшающими стабилизацию амплитуды увеличивающими крутизну переднего фронта выходного сигнала независимо от скорости перемещени .The closest to the technical essence of the invention is an inductive sensor of mechanical movements of discrete action 2. The sensor is made on a blocking generator with additional windings that improve the amplitude stabilization and increase the steepness of the leading edge of the output signal regardless of the speed of movement.

Однако 6 известном индуктивном датчике больша длительность импульса (пор дка 15 мкс) выходного сигнала , обусловленна необходимой массой магнитопровода и кор , не позвол ет использовать его при больших скорост х перемещени , или в малых (пор дка долей микросекунды) временных интервалах. К тому же цмеет место However, a large impulse length (about 15 µs) of the output signal, due to the required mass of the magnetic core and core, does not allow it to be used at high speeds of movement, or in small (about a fraction of a microsecond) time intervals. It also has a place

0 повышенный расход энергии на дополнительной обмотке.0 increased power consumption for additional winding.

Целью изобретени вл етс увели . быстродействи при контроле числа оборотов мощности.The aim of the invention is to increase. speed when controlling the speed of power.

Это достиг:аетс .тем, что в датчике оборотов, корь выполнен в виде двух сердечников , обмотки которых соединены друг с другом, а сердечники статора длй коллекторной и This has been achieved: it’s true that in the speed sensor, the measles is made in the form of two cores, the windings of which are connected to each other, and the stator cores for the collector and

0 базовой Обм9тр к выполнены раздельными . . 0 base Obm9tr to made separate. .

На чертеже ЩйЙ электрйч ска схема предлдженного устройства.In the drawing, GOOD ELECTRIC SKA is a diagram of the proposed device.

Устройство содержит четыре обмот5 ки индуктивности с сердечни ами 1, 2, 3 и 4, которые выполнены из перМалло ИЛИ феррита, включенных следующим об1У1отка с сердечником - в коллекторную цепь транзистора, The device contains four inductance windings with cores 1, 2, 3 and 4, which are made of perMallo OR ferrite, included as follows: with core - in the collector circuit of the transistor,

Claims

0 winding with core 2 - into the base circuit of the transistor /, windings with cores, .3 and 4 are interconnected into a galvanic closed circuit, and the windings with cores 1, 3 and 5, 4 form transformer-sensors in pairs. The device also includes a blocking transistor 5 and an output bus 6, from which the generated pulses are removed. The windings of inductance with cores 3 and 4 are located on the rotating part of the installation (motor cortex) so that the core poles are not shunted by the ferromagnetic parts of the structures and are located on the outer side of the core, and the windings interconnected form an electrically closed circuit. The windings of inductance with cores 1 and 2 are located on a fixed installation (motor stator) so that the pole does not have magnetic shunting and symmetrically under the poles of the windings with cores 3 and 4, -. The device works as follows. When the rotor rotates, when the poles of the cores 3 and 4 are combined with the helixes of cores 1 and 2, feedback is positive in the blocking generator, since the windings of inductance with cores 1 and 2 and 3 and 4 form two transformers in pairs and provide positive feedback From the collector circuit to the base of transistor 5. In this case, blocking r, the generator triggers and an electrical impulse appears on its output bus b, the parameters of which are determined by the selected blocking generator mode, power of transistor 5 and its count Vectorial voltage. The response time of the blocking generator is selected depending on the speed of rotation of the engine so that at the maximum overlap time of the cores (minimum speed) only one impulse is generated. The deep positive feedback provided by the flow inductance with cores 3 and 4, when combined with the inductance windings with cores 1 and 2, allows the formation of impulses with steep fronts and short duration, which ensures the speed of the speed sensor. The invention The speed sensor containing a stator with a collector and base winding M and a blocking generator and measles, in order to increase speed, measles is made in the form of two Cores, the windings of which are connected to each other, and the stator cores for the collector and the base windings are made separate. Sources of information taken into account during the examination 1. USSR author's certificate 366341, cl. q 01 B 7/02, 1971.

2. Authors certificate of the USSR 152192, cl. q 08 C 9/04, 1962.