Whether China has introduced maglev train technology from Germany and has built maglev rail transit

At present, the countries that have studied maglev trains in the world are mainly Germany, Japan, the United Kingdom, Canada, the United States, the former Soviet Union and China. The United States and the former Soviet Union abandoned research programs in the 70s and 80s, respectively, but the United States has recently started research programs again. The UK has only been working on maglev trains since 1973, but it was one of the first countries to put maglev trains into commercial operation.

In April 1984, the 600m long maglev transport system between Birmingham Airport and the railway station was officially put into operation, and passengers took only 90 seconds to take the maglev train from the airport to the railway station. However, in 1995, after 11 years of operation, it was discontinued, and the most mature research on maglev trains is currently in Germany and Japan.

Germany began to study maglev trains in 1968, and at the beginning, both normal and superconducting types were emphasized, and in 1977, they developed normal and superconducting test trains. However, after analysis and comparison, it was decided to concentrate on the development of only the constant-conducting maglev train. At present, Germany's technology in the research of normal conduction maglev trains has matured.

Japan began to study the constant-conducting maglev train in 1962, and later due to the development of superconducting technology, Japan began to turn to the study of superconducting maglev trains in the 70s. In December 1972, on the Miyazaki Maglev Railway test line, the speed reached 204 km/h. In December 1979 it was further raised to 517 km h.

In November 1982, the manned test of the maglev train was successful. In 1995, the maglev train was tested at a speed of 411 km/h. In December 1997, the world record of 550 km/h was set on a test line in Yamanashi Prefecture.

The maximum speed is related to the length of the test line, the German test line is circular at both ends, and the straight part is only about 7km, and the Japanese test line is straight and very long, so it can achieve a higher speed.

In the early 80s of the last century, China began to conduct research on low-speed and constant-conducting maglev trains. In October 1994, Southwest Jiaotong University built the first maglev railway test line, and at the same time carried out the manned test of the maglev train, successfully carried out the maglev train test with 4 seats, weight 4t, suspension height of 8mm, speed of 30km h, and passed the expert appraisal organized by the Ministry of Railways in January 1996. Then, on the indoor maglev test line with a length of 2m, a length of 36m and a design speed of 100km per hour, the low-speed constant conduction 6t single bogie maglev test vehicle with a length of m, a width of 3m, a weight of 4t, 15 seats and a design speed of 100km per hour was successfully tested on the indoor maglev test line of the annular test line of the Academy of Railway Sciences, which passed the appraisal of scientific and technological achievements of the Ministry of Railways in November 1998 and filled the gap in the field of maglev train technology in China.

Japan: Superconducting electric magnetic levitation: Magnetic levitation using the diamagnetism of superconductors.

The electromagnet is placed on the superconducting disk, and because the superconducting disk repels the magnetic induction wires, there is a repulsive force between the superconducting disk and the magnet, resulting in the magnet floating above the superconducting disk. This kind of superconducting levitation can be greatly utilized in engineering technology, such as the superconducting levitation train. Let the train levitate and disengage from the track, so that the resistance of the train during operation is much lower, and the speed of "flying" along the track can reach 500 km h.

After the discovery of high-temperature superconductors, superconducting states can appear in the temperature region of liquid nitrogen (above minus 169 degrees), and the superconducting suspension device is simpler and the cost is greatly reduced.

Germany: Conventional electromagnetic levitation: the bottom of the train and the top of the bogie on both sides of the electromagnet are installed, and the reaction plate and the induction steel plate are respectively set up above the "work" track and below the upper arm part, and the current of the electromagnet is controlled to keep a gap of 1 cm between the electromagnet and the track, so that the attraction between the bogie and the train and the gravity of the train are balanced with each other, and the train is floated about 1 cm by using the magnet attraction to make the train suspend on the track.

The drive of the hovering train is exactly the same as that of the synchronous linear motor. In layman's terms, the alternating current flowing in the coils on both sides of the track turns the coils into electromagnets, which make the train run due to its interaction with the electromagnets on the train. The n pole of the electromagnet at the head of the train is attracted to the s pole of the electromagnet mounted on the track a little earlier, and at the same time repelled by the n pole of the electromagnet installed a little later on the track.

As the train advances, the direction of the current flowing in the coil is reversed, i.e., the original S pole becomes the N pole, and the N pole becomes the S pole. The cycle alternates, and the train runs forward. Stability is controlled by the guidance system.

The "Normally Conductive Magnetic" guidance system is a set of electromagnets specially designed for guidance installed on the side of the train. When the train shifts left and right, the guide electromagnet on the train interacts with the side of the guide rail, generating a repulsive force that returns the vehicle to its normal position. When the train runs on a curve or ramp, the control system controls the current in the guide magnet to achieve the purpose of controlling the operation.

I think of course China can, as long as China's science and technology develops fast enough. It's all possible!

I think there should be no problem with our own technological development at the moment.

China's development is now very good, and the technical conditions are also very good.

I think it's okay, but it might take a little longer.

Yes, now we pay attention to Made in China, and we have a lot of technical talents, united as one.

Yes, China leads the world in research on transportation.

I think it's completely possible, the Chinese are very smart, very powerful, very powerful.

Yes, after all, they all have their own characteristics.

I think this is okay, after all, China's current technology is completely okay, but now is the global era.