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Frequency conversion speed regulation of packaging equipment is a very technical activity. If one is not done well, it will cause damage to the equipment. What are the basic design steps of frequency conversion speed regulation control system?
Regardless of the requirements of dynamic and static indicators put forward by the production process, the design process of the variable frequency speed control system is basically the same. The basic design steps are as follows:
1. Understand the requirements of production process for speed change, analyze the factors affecting speed change, and establish the principle block diagram of speed control system according to the formation theory of automatic control system.
2. Understand the operation process of production process, according to the design method of electrical control circuit, establish the principle block diagram of electrical control circuit of speed control system.
3. Select the motor, frequency converter and its peripheral equipment according to the load and production process requirements. If it is closed-loop control, it is better to choose a universal frequency converter that can operate in four quadrants.
4. According to the known situation of mastering the mathematical model of the controlled object, it is decided whether to choose the conventional PID regulator or the intelligent regulator. If the mathematical model of the controlled object is not clear, we also want to know the mathematical model of the controlled object. If conditions permit, we can use the dynamic signal tester (such as HP3562A dynamic signal tester produced by HP Company) to test the mathematical model. The mathematical model of the controlled object has no strict regulator, so it should belong to unconventional PID regulator.
5. Purchase of basic equipment for universal frequency converter, feedback components, programmable controller, regulator and motor. If the design project belongs to the old equipment transformation project, the motor may not need to be re-purchased.
6. Draw the electrical control circuit schematic diagram of the speed control system, compile the program of the control system and modify the schematic diagram of the speed control system according to the actual equipment purchased by S.
Above is the basic design steps of frequency conversion speed control system, how to make the vacuum packaging machine more effective use, you can see its information!
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