For optimized productivity, increased efficiency and top quality end products every production plant or factory should be equipped with an advanced motion control system that is designed to provide both simple and complex control strategies for all the machines and applications used in the process of manufacturing. Advanced control systems for any industrial process are made up of four basic elements including measuring device, controller and and output signal. Measurement is necessary to identify the current status and the conditions of the overall manufacturing process. A controller is used to optimize the performance of the application based on the obtained values and measurements, while an output signal is used to adjust the results delivered by the controller. In this article we will focus on one of the most important elements of one motion control system- the controller. As electro-mechanical devices controllers are designed to enhance the accuracy and stability of the motion control process and can also be used to speed up the response of a slow system. These devices range from basic controls used in simple applications to advanced ones with various input and output required for the automation of the whole factory.
Depending on the design of the controller, the inputs can be delivered by external sensors and the outputs through electrical loops or switches, while some models make use of built-in sensors for both the input and output. Once they receive the voltage inputs the controllers perform an analysis of the inputs then identify any changes in the values through the output signals. There are various types of controllers that have different features and uses. Level controllers- are devices that use sensors or switches to detect and control the level of products in containers, tanks, vats, etc. The level controller operates on basic principles. It compares the received signal to a set point and adjusts the level through an output signal. The device can be used for both liquids and dry goods. Flow controllers- are designed to accurately control the elements utilized to provide continuous flow in the manufacturing process. They incorporate measuring sensors and are available in various configuration and sizes to suit a variety of applications. Programmable controllers- are electronic devices that are designed to control the operation of automatic machinery. Through multiple programmed instructions they are able to adjust the functions of the machine to suit the specific conditions of the manufacturing process. Universal controllers- can be used to adjust the parameters of many different applications including lasers, tanks, pumps, boilers, etc. Their main purpose is to keep the values of the manufacturing process within the required operational range. Reference: www.fcrmotion.com.au/automation/
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