The industrial robot control system is the brain of the industrial robot; it is responsible for receiving input signals, processing information, controlling the robot's movement, and performing tasks. A complete industrial robot control system typically includes the following basic components:
Sensor system:
Position sensor: Used to detect the angular position of robot joints.
Speed sensor: measures the rotational speed of robot joints.
Force/torque sensor: detects the interaction forces between the robot's end effector and the environment.
Visual sensors: provide robots with the ability to visually perceive their environment.
Actuator system:
Motor driver: Converts electrical signals into mechanical motion to control the rotation of robot joints.
Hydraulic or pneumatic systems: In some robots, hydraulic or pneumatic systems may be used to generate power.
Controller:
Central Processing Unit (CPU): Executes program instructions and processes data.
Input/output interface: Connects sensors, actuators and other peripheral devices.
Memory: Stores programs and data.
Software system:
Operating system: Manages computer hardware resources and provides a software runtime environment.
Programming languages and development environments: used for writing and testing robot control programs.
Motion control algorithm: plans and executes the robot's motion path.
Task planning software: Defines the tasks and sequence of operations that the robot needs to complete.
Human-computer interaction interface:
Control panel: Provides physical buttons and a touch screen for manual control of the robot.
Computer interface: Programming and monitoring the robot's status via computer software.
Communication system:
Internal communication: Data exchange between various components within the controller.
External communication: Data exchange with other devices or systems (such as PLC, CNC, etc.).
Security system:
Emergency Stop: Quickly stop the robot's movement in an emergency.
Safety sensors: detect the robot's surroundings to prevent collisions or injuries.
Power Management:
Power supply: Provides a stable power supply for the robot control system.
Power monitoring: Ensures the power system is working properly and prevents power failures.
Mechanical structure:
Robot body: including the robot's skeleton, joints, and end effector.
Transmission mechanism: transmits the power of the motor to the robot joints.
Auxiliary systems:
Cooling system: Keeps the robot operating at a suitable temperature.
Lubrication system: Reduces friction and wear on robot joints.
In-depth analysis
Sensor system
Sensor systems are the sensory organs of industrial robots, providing real-time data on the robot's status and environment. Position sensors typically employ photoelectric encoders or magnetic encoders, providing high-precision position feedback. Velocity sensors, whether incremental or absolute, are used to detect and control the robot's movement speed. Force/torque sensors are particularly important for robots requiring delicate manipulation or human collaboration. Vision sensors, whether 2D or 3D, are used for object recognition, localization, and measurement.
Actuator System
The actuator system is the power source of a robot, typically consisting of a motor and its driver. The motor can be a stepper motor, servo motor, or DC motor, each with its specific applications and advantages. The motor driver is responsible for receiving commands from the controller and converting them into precise motor movements.
controller
The controller is the brain of an industrial robot, responsible for processing sensor data, executing program instructions, and controlling the robot's movement. The controller's CPU needs sufficient computing power to handle complex algorithms and large amounts of data. Input/output interfaces are used to connect sensors, actuators, and other peripheral devices. The memory stores programs and data, ensuring the robot can resume operation after a power outage.
Software System
The software system is the intelligent core of an industrial robot, comprising the operating system, programming language, development environment, motion control algorithms, and task planning software. The operating system manages computer hardware resources and provides the software runtime environment. Programming languages and development environments enable developers to write and test robot control programs. Motion control algorithms plan and execute the robot's motion paths, while task planning software defines the tasks and sequence of operations the robot needs to complete.
Human-computer interaction interface
The human-machine interface (HMI) serves as a bridge between the operator and the robot. The control panel provides physical buttons and a touchscreen for manual robot control. The computer interface, on the other hand, allows for software programming and monitoring of the robot's status, enabling operators to easily set parameters, monitor the robot's operating status, and diagnose faults.
Communication system
The communication system is responsible for data exchange between the robot's internal components, as well as with other devices or systems. Internal communication typically uses high-speed bus technologies such as EtherCAT or CANopen. External communication may involve industrial Ethernet, serial communication, or wireless communication technologies.
security system
Safety systems are a crucial part of protecting operators and equipment. Emergency stop functions can quickly halt the robot's movement in emergency situations. Safety sensors are used to detect the robot's surroundings and prevent collisions or injury.
