PROPOSTA DE AUTOMAÇÃO DO PROCESSO DE ENFARDAMENTO DE UMA PERFILADEIRA DRYWALL DE UMA INDÚSTRIA METALÚRGICA

The fundamentals of industrial automation are based on communication and data monitoring, on realtime control of industrial processes without human interference, with that providing opportunities improvements in various ways in the equipment of industries. This article seeks to propose an advance to the final process of a Drywall Roll Forming Machine through an automated baling system to improve the production process of a Metallurgical Industry. That way, a system was built with conveyor and lift tables by rollers and chains with support of sensors and electrical and pneumatic actuators for its operation. The proposal was carried out and successful through computational simulations, using engineering software based on discrete variables of components and communication of a Virtual PLC (Programmable Logic Controller) and a Supervisory System.

Tunable characteristics of low-frequency bandgaps in two-dimensional multivibrator phononic crystal plates under prestrain

In view of the influence of variability of low-frequency noise frequency on noise prevention in real life, we present a novel two-dimensional tunable phononic crystal plate which is consisted of lead columns deposited in a silicone rubber plate with periodic holes and calculate its bandgap characteristics by finite element method. The low-frequency bandgap mechanism of the designed model is discussed simultaneously. Accordingly, the influence of geometric parameters of the phononic crystal plate on the bandgap characteristics is analyzed and the bandgap adjustability under prestretch strain is further studied. Results show that the new designed phononic crystal plate has lower bandgap starting frequency and wider bandwidth than the traditional single-sided structure, which is due to the coupling between the resonance mode of the scatterer and the long traveling wave in the matrix with the introduction of periodic holes. Applying prestretch strain to the matrix can realize active realtime control of low-frequency bandgap under slight deformation and broaden the low-frequency bandgap, which can be explained as the multiple bands tend to be flattened due to the localization degree of unit cell vibration increases with the rise of prestrain. The presented structure improves the realtime adjustability of sound isolation and vibration reduction frequency for phononic crystal in complex acoustic vibration environments.

Rancang Bangun Perangkat Kendali ROV Berbasis Joypad Dan Aplikasi Pemantauan Kondisi Bawah Air Berbasis Video Streaming

Intisari — ROV merupakan sebuah robot penjelajah bawah air yang dikendalikan oleh operatormenggunakan sistem pengendali ROV dengan perangkat remote control. Pada penelitian ini digunakanperangkat remote control berupa Joypad yang telahdiintegrasikan denganJoypad dan mikrokontrolerArduino Pro Mini.ROV dilengkapi dengan Raspberry Pi, kamera, sensor suhu, sensor gyroscope, sensortegangan dan sensor tekanan air untuk mengakuisisi data kondisi bawah air untuk kemudian dikirimkanke laptop operator dan kemudian ditampilkanpada sebuah aplikasi pemantauan berupa GUI (GraphicUser Interface) yang dibangun denganbahasa pemrograman Python 2.7. Hasil pengujian diperolehbahwa GUI dapat memantau kondisi bawah air dengan menampilkan video streaming, data suhu, dankedalaman ROV secara realtime. Perangkat kendali pada ROVmampu mengendalikan laju pergerakanROV untuk turun, naik, belok kanan, belok kiri, maju dan mundur tanpa adanya halangan padakedalaman 0 meter – 4,2 meter dengan jangkauan radius 20 meter.Kata kunci — ROV, Aplikasi Pemantauan, Sistem Kendali ROV, Joypad, Phyton 2.7.Abstract — ROV is an underwater explorer robot that is controlled by the operator using the ROVcontroller system with a remote control device. In this study a remote control device in the form ofJoypad was integrated with Joypad and Arduino Pro Mini microcontrollers. The ROV is equipped withRaspberry Pi, cameras, temperature sensors, gyroscope sensor, voltage sensor and water pressuresensors to acquire underwater conditions to be sent to the operator's laptop and the displayed on anmonitoring application in the form of a GUI (Graphic User Interface) built in Python 2.7 programming.The test results are obtained that the GUI can monitor underwater conditions by displaying videostreaming, temperature data, and ROV depth in realtime. Control devices in the ROV are able to controlthe movement of the ROV to go down, up, turn right, turn left, forward and backward without anyobstacles at a depth of 0 meters - 4.2 meters with a radius range of 20 meters.Keywords — ROV, Monitoring Aplication, ROV Control System, Joypad, Phyton 2.7.