The Fountain Company Tells You Why the Music Fountains Follow the Rhythm?
Publish Time：2019/04/15 News Number of views：455
A fountain is a combination of water or other liquid that has a specific shape sprayed through a nozzle under a certain pressure. Nowadays, fountains are generally artificial scenery fountains that rely entirely on fountain equipment. Mainly through the control of frequency converter to achieve rhythm and rhythm, music fountain water changes abundantly, with lighting to give people a real and intuitive aesthetic feeling. The various swings in the music fountain can make people feel the soft beauty of the fountain. The radial swing is caused by the swing mechanism under the water surface, which makes the water scenery beautiful and pleasing, and gives people a magical feeling. It is the performance of the high-tech development of the times.
The position of the swinging fountain and the change of the speed of movement are important factors in the generation of the swinging water type. The position sensor of the fountain swing mechanism should be a waterproof, non-contact positioning device. A Hall sensor induced by a magnet, a fiber-guided photoelectric sensor, or a rotary position encoder attracted by a magnet is often used. For example, the positioning device of the fountain swing mechanism using position coder includes position coder mounted on the swing motor shaft, high-speed counter, control computer and communication interface. Because the connecting rod of the swing mechanism usually has large clearance, in order to achieve accurate positioning, the swing mechanism can only reach the positioning point from one direction to ensure its repetitive accuracy. Therefore, when the swing mechanism needs to stop, it must reach the anchor point from one direction each time.
The positioning accuracy of the swing mechanism is affected by the movement moment and resistance moment. The torque depends on the power supply voltage of the motor and the speed of the motor before stopping. While resistance moment is composed of friction force of the swing mechanism, the speed of water flow and the wind force around it. Obviously, these are factors that cannot be determined beforehand. Therefore, in order to achieve the purpose of precise positioning, we must change its control parameters each time. There are generally two control parameters for accurately positioning the motor energy consumption brake, the magnitude of DC brake current and the starting brake time. A more convenient way to control the computer is to change the braking time.
In the control system, the braking time of the motor can be corrected by the deviation of the detected position. According to the statistic data of the positioning deviation value of the swing mechanism, the braking time is finally determined by calculating the mathematical model.
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