Implementation of discrete PID controller using Atmel AVR 8-bit microcontroller

Бесконтактные двигатели постоянного тока (БДПТ) широко распространены в различныхприложениях, где важны широкий диапазон изменения угловой скорости, отсутствие узлов, которые требуются частое обслуживание, высокая долговечность и надежность. Управление данными двигателями и регулирование их скоростей вращения являются важнейшей научной и инженерной задачей, Космические аппараты и приборы18 решения которой можно достичь при помощи микроконтроллера. На практике оказывается, что при проектировании различных устройств автоматики неоднократно сталкивается задача обеспечения заданной угловой скорости вала двигателя, которая не зависит от действующей нагрузки. В работе представлены теоретический подход и результаты применения дискретного ПИД - регулятора для регулирования угловой скорости бесконтактного двигателя постоянного тока с применением 8-разрядными микроконтроллерами Atmel AVR. На основе полученных данных построены графическиезависимости.Brushless direct current (BLDC) motors are widely distributed in a variety of applications where a wide range of changes in angular velocity is important, the absence of nodes that requires frequent maintenance, is high durability and reliability. BLDC motor control and regulation of their speeds are essential scientific and engineering tasks which can be accomplished by using a microcontroller. In practice the fact is that the task of providing a predetermined angular velocity of the motor shafts, which is independent of the actual load, repeatedly meets in the design of various control devices. The article presents the theoretical approach and the results of application of discrete PID - controller for regulation the rotation speed of brushless direct current motor using Atmel AVR 8-bit microcontroller. Characteristic curves are built on basic of the received data

Goltsov phenomenon as a natural-technogenic electromagnetic discharge of the lithosphere

The article presents data on an unusual natural phenomenon that occurred on November 30, 1984 in the village of Goltsovka, Zmeinogorsky District, Altai Territory. It manifested itself in the passage above the village of a luminous ball, which was accompanied by an impact on the surface of the earth and led to some damage to structures and buildings. A detailed description of this unusual phenomenon in the published scientific literature, as far as we know, is practically absent. The article describes this phenomenon, based on data collected soon after the event, with the addition of upto-date clarifying information. A comparison is made with several known cases of ball lightning and a whirlwind. The conclusion is made about an unusually large energy release in the Goltsovka event