Top ten control systems for automation equipment
1. Controller: the brain of an automated factory
Commonly used controllers in automation plants include plc and industrial computer.
The controller (English name: controller) refers to the main device that changes the wiring of the main circuit or the control circuit in a predetermined order and changes the resistance value in the circuit to control the starting, speed regulation, braking and reversal of the motor. It consists of a program counter, an instruction register, an instruction decoder, a timing generator, and an operation controller. It is the "decision-making body" that issues commands, that is, completes the coordination and direct operation of the entire computer system.
Programmable Logic Controller (PLC), which uses a type of programmable memory for its internal memory program, performing user-oriented instructions such as logic operations, sequence control, timing, counting, and arithmetic operations, and by digital or Analog input/output controls various types of mechanical or production processes.
Industrial Personal Computer (IPC) is an industrial control computer. It is a general term for tools that use the bus structure to detect and control the production process, electromechanical equipment and process equipment. Industrial computer has important computer attributes and features, such as computer CPU, hard disk, memory, peripherals and interfaces, and has an operating system, control network and protocol, computing power, and friendly human-machine interface. The industrial control products and technologies are very special and belong to intermediate products. They are reliable, embedded and intelligent industrial computers for other industries.
2. Robot: a firm performer of an automated factory
A robot is a machine that automatically performs work. It can accept human command, run pre-programmed procedures, or act on principles that are based on artificial intelligence techniques. Its mission is to assist or replace the work of human work, such as production, construction, or dangerous work. Robots generally consist of actuators, drives, detection devices and control systems, and complex machinery.
3. Servo motor: the powered muscle of the automated factory
A servomotor (servomotor) is an engine that controls the operation of a mechanical component in a servo system, and is an auxiliary motor indirect transmission. The servo motor can control the speed and position accuracy very accurately, and can convert the voltage signal into torque and speed to drive the control object. The servo motor rotor speed is controlled by the input signal and can be quickly reacted. It is used as an actuator in the automatic control system, and has the characteristics of small electromechanical time constant, high linearity, and starting voltage, which can receive the received electrical signal. Converted to an angular displacement or angular velocity output on the motor shaft. Divided into two major categories of DC and AC servo motor, its main feature is that when the signal voltage is zero, there is no rotation phenomenon, and the rotation speed decreases uniformly with the increase of torque.
A servo system is an automatic control system that enables an output controlled amount of an object to follow an arbitrary change of an input target (or a given value). The servo is mainly positioned by pulse. Basically, it can be understood that when the servo motor receives one pulse, it will rotate the angle corresponding to one pulse to realize the displacement. Because the servo motor itself has the function of emitting pulses, the servo motor has every When you rotate an angle, a corresponding number of pulses are emitted, so that it responds to the pulse received by the servo motor, or closed loop. In this way, the system knows how many pulses are sent to the servo motor, and how many pulses are received at the same time. In this way, the rotation of the motor can be controlled very accurately, so that accurate positioning can be achieved, which can reach 0.001 mm. DC servo motors are divided into brushed and brushless motors. The brush motor has low cost, simple structure, large starting torque, wide speed regulation range, easy control, maintenance, but inconvenient maintenance (replacement of carbon brushes), electromagnetic interference, and environmental requirements. It can therefore be used in cost-sensitive general industrial and residential applications.
4. Sensor: Automated factory feels the touch of outside information
The sensor (English name: transducer/sensor) is a detection device that can sense the measured information and can transform the sensed information into an electrical signal or other required form of information output to meet the information. Requirements for transmission, processing, storage, display, recording, and control. It is the first step in achieving automatic detection and automatic control.
In modern industrial production, especially in automated production processes, various sensors are used to monitor and control the various parameters of the production process, to operate the equipment in a normal or optimal state, and to achieve the best quality of the product. Therefore, it can be said that without many excellent sensors, modern production will lose its foundation.
Variable-frequency drive (VFD) is a power control device that controls the AC motor by changing the working frequency of the motor by applying variable frequency technology and microelectronic technology. The frequency converter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, and detection unit micro processing unit. The inverter adjusts the voltage and frequency of the output power supply by the breaking of the internal IGBT, and supplies the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter has many protection functions. Such as overcurrent, overvoltage, overload protection and so on.
6. Solenoid valve
Electromagnetic valve (Electromagneticvalve) is an electromagnetically controlled industrial equipment. It is an automatic basic component used to control fluids. It is an actuator and is not limited to hydraulic or pneumatic. Used in industrial control systems to adjust the direction, flow, speed and other parameters of the media. Small robots who love machinery can pay attention to the micro-signal of visual learning machinery. The solenoid valve can be used with different circuits to achieve the desired control, while the precision and flexibility of the control can be guaranteed. There are many kinds of solenoid valves. Different solenoid valves play different roles in the control system. The most common ones are check valves, safety valves, directional control valves, speed control valves, etc.
7. Industrial camera: the eyes of an automated factory
Industrial cameras are a key component in machine vision systems. The most essential function is to convert optical signals into ordered electrical signals from the AFT-808 compact HD industrial camera. Choosing the right camera is also an important part of the design of the machine vision system. The camera not only directly determines the image resolution and image quality, but also directly relates to the operating mode of the whole system.
Industrial cameras are generally installed on the machine line instead of the human eye for measurement and judgment. The digital image capture target is converted into an image signal and transmitted to a dedicated image processing system. The image system performs various operations on these signals to extract the features of the target. Further, based on the result of the discrimination, the device operation at the site is controlled.
Instruments (instrumentation) Instruments are instruments or equipment used to detect, measure, observe, and calculate various physical quantities, material compositions, physical parameters, and the like. Vacuum leak detectors, pressure gauges, length measuring instruments, microscopes, multipliers, etc. are all instruments. Broadly speaking, instrumentation can also have functions such as automatic control, alarm, signal transmission and data processing, such as pneumatic adjustment instruments for automatic control of industrial production processes, and electric adjustment instruments, as well as distributed instrument control systems. Instrumentation.
Because of the improvement of microelectronics skills, instrumentation products are further integrated with micro-processors and PC skills. The digitization and intelligence of instrumentation are improved from time to time, enabling new skills such as multimedia skills, human-computer interaction, temperance, and artificial neuron collection. It is widely used in modern instrumentation.
Various instruments and meters need to be applied in an automated factory. For example, measuring the pressure, liquid level, flow rate, temperature and other parameters required for some control processes requires relevant instrumentation.
9. Automation software
Automation software plays an important role in industrial systems. Its main function is to control the automation of production processes. The rapid development of industrial control systems in technology, industry and applications has gradually become highly integrated, intelligent and networked. Development trends and characteristics. As the industrial control system is connected to the traditional IT management system and the Internet, the general control software, general hardware and general protocols are increasingly used internally. More common is the SCADA automation software.
The SCADA automation system (supervisorycontrolanddataacquisition) is what we call the data acquisition and monitoring system. It is mainly a system that is supported by computer technology and performs automatic control of scheduling of various production processes. At present, SCADA software not only plays a large role in data information collection, supervision and control in petroleum, chemical and other industries, but also widely used in the supervision of water conservancy and electric power industry. SCADA automation software can automatically and accurately monitor production for a long time without being supervised, and obtain effective information data from it, providing a powerful evaluation reference for regulatory administrators.
10. Control cabinet
The control cabinet also includes many kinds of electrical control cabinets, frequency control cabinets, low voltage control cabinets, high voltage control cabinets, water pump control cabinets, power control cabinets, explosion control cabinets, elevator control cabinets, PLC control cabinets, fire control cabinets, brick machines. Control cabinets and more.
The automation plant involves electrical, variable frequency, power supply, water pump and other control cabinets, and different control cabinets are selected according to different needs to achieve different control functions.