1. Controller, the brain of an automated factory
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.
Commonly used controllers in automation plants include plc, industrial computer, and so on.
Programmable Logic Controller (PLC), which uses a type of programmable memory.
It is used to store programs internally, perform user-oriented instructions such as logic operations, sequence control, timing, counting, and arithmetic operations, and control various types of mechanical or production processes through digital or analog input/output.
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 the automation 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, powered by the power plant 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. Sensors, automated factories feel 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.
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