The difference between ABB robot movej and movel

ABB robots are intelligent devices widely used in the field of industrial automation, with high flexibility and reliability. In the programming and operation of ABB robots, movej and movel are two commonly used motion commands. This article will provide a detailed introduction to the differences between movej and movel, as well as their advantages and disadvantages in practical applications.

introduction
In the field of industrial automation, the application of robots is becoming increasingly widespread, especially in assembly, welding, and handling processes. ABB robots, as a leading global manufacturer of industrial robots, have high flexibility and reliability in their products. In the programming and operation of ABB robots, movej and movel are two commonly used motion commands. Understanding their differences and application scenarios is of great significance for improving the efficiency of robots and reducing production costs.

Basic concepts
2.1 movej

Movej (Joint Space Motion) is a type of joint space motion command that controls the movement of a robot by specifying the angles of each joint. In the movej instruction, the movement of the robot is achieved by changing the angles of each joint, rather than by changing the position or posture of the robot’s end effector.

2.2 movel

Move (Linear Space Motion) is a type of linear space motion instruction that controls the motion of a robot by specifying the position or posture of its end effector in space. In the move command, the movement of the robot is achieved by changing the position or posture of the end effector, rather than by changing the angles of each joint.

Sports characteristics
3.1 Motion characteristics of movej

The motion characteristics of movej are mainly reflected in the following aspects:

(1) Joint space control: movej achieves motion by controlling the angles of each joint of the robot, thus having high control accuracy in joint space.

(2) Speed control: Movej can easily control the speed of each joint of the robot, thereby achieving precise control of the robot’s motion speed.

(3) Flexibility: As movej achieves motion by controlling joint angles, it has high flexibility in some complex motion scenarios, such as when it is necessary to bypass obstacles or work in narrow spaces.

3.2 Motion Characteristics of Movel

The motion characteristics of a move are mainly reflected in the following aspects:

(1) Linear space control: Movel achieves motion by controlling the position or posture of the robot’s end effector in space, thus having high control accuracy in linear space.

(2) Path planning: Movel can facilitate path planning and achieve continuous motion of robots in space.

(3) Simplified programming: As movel achieves motion by controlling the position or posture of the end effector, it can simplify motion instructions and improve programming efficiency during programming.

Application scenarios
4.1 Application scenarios of movej

Movej is suitable for the following scenarios:

(1) Scenarios that require precise control of robot joint angles, such as welding, assembly, etc.

(2) Scenes that require bypassing obstacles or working in narrow spaces.

(3) Scenes that require complex motion trajectories, such as painting, writing, etc.

4.2 Application scenarios of movel

Movel is suitable for the following scenarios:

(1) Scenarios that require precise control of the position of the robot’s end effector, such as handling, spraying, etc.

(2) Scenarios that require continuous motion trajectories, such as cutting, polishing, etc.

(3) Scenarios that require simplified programming, such as automated production lines.

Advantages and disadvantages analysis
5.1 Advantages and disadvantages of movej

advantage:

(1) High precision joint space control, suitable for scenarios that require precise control of robot joint angles.

(2) Good flexibility, suitable for scenarios with complex motion trajectories.

(3) It is convenient to control the speed of each joint of the robot.

Disadvantages:

(1) Programming is relatively complex, requiring consideration of the angles and velocities of each joint.

(2) The control accuracy in linear space is relatively low.

5.2 Advantages and disadvantages of movel

advantage:

(1) Linear space control has high accuracy and is suitable for scenarios that require precise control of the position of the robot’s end effector.

(2) It can facilitate path planning and achieve continuous motion trajectories.

(3) Programming is relatively simple and can improve programming efficiency.

Disadvantages:

(1) The control accuracy in joint space is relatively low.

(2) Relatively poor flexibility, not suitable for scenarios that require bypassing obstacles or working in narrow spaces.

conclusion
Through the above analysis, we can see that there are significant differences between movej and movel in terms of motion characteristics, application scenarios, and advantages and disadvantages. In practical applications, it is necessary to select appropriate motion commands based on specific scenarios and requirements. Meanwhile, understanding their advantages and disadvantages can help us better utilize the flexibility and reliability of ABB robots, improve production efficiency, and reduce costs.