The use of linear Motors
time£º2013/12/5 click£º8427
(1) In the transportation industry, China successfully produced a magnetic levitation train dragged by a linear motor in 2002. The car uses a new shape curve and a streamlined bullet warhead front circumference. With a length of 15 meters, a width of 3 meters and an empty weight of 20 tons, it has 44 seats and can carry 100 people. The peak load is 16 tons. The design speed is 150 km/h and the test speed is 80 km/h. China has become a master. One of the few regions of magnetic levitation technology.
(2) In the construction industry, for example, elevators driven by linear motors are now widely used in smart buildings. The elevator driven by the early use of linear Motors was installed in the Wanshi Building in Shimashima, Tokyo, Japan, in April 1990. The elevator has a load of 600kg, a speed of 105m/min, and a height of 22.9 M. Because there is no tracer unit for a linear motor driven elevator, the computer room at the top of the building can be omitted. If the height of the building increases to about 1,000 meters, a steel-free rope elevator must be used. This elevator is driven by a linear motor with high temperature superconductivity technology. The coil is installed in the shaft and the car is equipped with a high-performance permanent magnet material.
(3) In the semiconductor industry, linear motors are widely used in various processing equipment such as photolithography machines, IC bonding machines, and IC sealing machines due to their high-speed and high-precision characteristics, and single equipment often requires multiple linear Motors.
(4) In the medical industry, linear motors have also emerged, ranging from electric nursing beds, X-ray perspective beds, electric operating tables, and small pacemakers.
(5) In the CNC machining industry, the maximum feed speed that can be achieved by the traditional "rotating motor + ball screw" transmission form is 30m/min, and the acceleration is only 3m/2s. The linear motor drives the worktable at a speed of 30 times that of the traditional transmission mode, the acceleration is 10 times that of the traditional transmission mode, and the peak value can reach 10g; Stigma increased by 7 times; The workbench driven directly by linear motor has no reverse working dead zone; Due to the small inertia of motor transmission, the linear servo system can achieve higher frequency response.
(6) In the military industry, the "SPECTRUM ONLINE Website" of the IEEE Institute of Electrical and Electronics Engineers reported on November 12, 2004 that the US Navy began testing two systems that revolutionized the way aircraft carriers eject aircraft. The heart of the electromagnetic aircraft ejection system is a 103-meter-long linear induction motor. Electromagnetic aircraft ejection system has better performance and ejection control range, suitable for ejection aircraft wide range. It will accelerate the weight of the aircraft to be about 4.5 to 45 tons, and the ejection speed is between 100 and 370 km/h. The control sensitivity is flexible, which can not be achieved by steam catapults. The use of linear Motors is extensive and has penetrated into economic development. In all fields, The demand for linear motors will also increase day by day, and the application prospects are very broad ~ information is reproduced in the network.
Linear motor