The Automated Guided Vehicle (AGV) is also commonly referred to as the AGV trolley. Refers to a transport vehicle equipped with an automatic guiding device such as electromagnetic or optical, capable of traveling along a prescribed guiding path, with safety protection and various transfer functions. A driver's van is not required for industrial applications, and a rechargeable battery is used as a power source. Generally, the travel route and behavior can be controlled by a computer, or the electromagnetic track can be used to set up a travel route, the electromagnetic track is adhered to the floor, and the unmanned transport vehicle relies on the information brought by the electromagnetic track to move. Its main features are car programming, parking selection device, safety protection and various transfer functions. Under the supervision of the computer, it can drive autonomously according to the instructions and automatically travel along the prescribed guiding route to the designated place. Complete a series of assignment tasks. Its system technology and products have become important equipment and technology for flexible production lines, flexible assembly lines, and warehouse logistics automation systems.
Advantages of AGV trolleys1. Replacing manual handling to reduce labor intensity;
2. It can be combined, and the vehicle and drive control unit can be easily realized;
3. Good flexibility, high degree of automation and high level of intelligence. The driving path of AGV can be flexibly changed according to the changes of storage location requirements, production process, etc., and the cost of running path changes with traditional conveyor belts and rigid transmission lines. Very cheap compared to.
4. Advanced: AGV integrates light, machine, electricity and computer, and integrates advanced theory and application technology in the field of science and technology. Strong guiding ability, high positioning accuracy and good self-driving performance. Reduce labor, reduce the loss of man-made operations; reduce personnel, save time, shorten staffing; optimize production structure in places where people are inconvenient to enter, saving manpower, material resources and financial resources
5. Fast action: AGV is characterized by wheeled movement. Compared with walking, crawling or other non-wheeled mobile robots, it has the advantages of quick action, high work efficiency, simple structure, strong controllability and good safety. Compared with stackers, monorails, conveyors, conveyor chains, conveyor tracks and stationary robots commonly used in material handling, the AGV's active area does not require the installation of rails, support frames and other fixtures, and is not subject to site, road and space. limit. Therefore, in the automated logistics system, it can best fully reflect its autonomy and flexibility, and achieve efficient, economical and flexible unmanned production. AGV is widely used in factory companies
6. Corresponding adjustment is very simple when the production layout changes. Installation and debugging can be carried out at production time without affecting production. The trajectory changes flexibly, and the layout can be changed at any time without affecting production.
7. The investment period is 1 to 2 months, and the transformation period is 1 day to 1 week. Compared with the logistics line equipment, the investment cycle is doubled and the transformation period is shortened by more than 8 times.
88. Comparison of cost and logistics line equipment The new construction cost is greatly reduced, the operation cost is extremely small, and there is no waste operation of the logistics line equipment. When the production layout changes, the transformation cost is extremely low, and only the track is changed, the waste is zero.
The guidance of the AGV refers to calculating the actual control command value of the AGV according to the position information provided by the AGV steering sensor, that is, giving the set speed and steering angle of the AGV, which is the AGV control. The key to technology. In short, AGV's guidance control is AGV trajectory tracking. There are several ways to guide the AGV. For example, using the center point of the guiding sensor as a reference point, tracking the virtual point on the guiding magnetic strip is one of them. The control target of the AGV is to correct the rotational speed of the driving wheel to change the traveling direction of the AGV by detecting the relative position of the reference point and the virtual point, and try to make the reference point above the virtual point. This way the AGV can always track the boot line.
After receiving the material handling instruction, the controller system calculates, plans and analyzes according to the stored running map and the current position and driving direction of the AGV trolley, selects the best driving route, and automatically controls the driving and steering of the AGV trolley when the AGV is used. After reaching the loading position and accurately parking the position, the transfer mechanism moves to complete the loading process. Then the AGV car starts and drives to the target unloading point. After the accurate parking, the transfer mechanism acts, completes the unloading process, and reports its position and status to the control system. The AGV car then starts and heads for the standby area. Wait until the new order is received before making the next move.
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