Magnet linear motor with magnet long what look like
Linear motor, mainly used in some of the automatic control system, is a kind of can convert electric energy directly into linear motion of the actuator.
Because it is a kind of new and high technology, applied more and more, so the overall outlook is pretty good.
Why a lot of people ask, linear motor is more expensive?
Actually affect the price of linear motor is one of the main factors of linear motor hardware is one of the rare earth magnet.
What is the magnet linear motor use?
Linear motor with permanent magnets, is a high performance ndfeb magnet cubes, specifications are different.
Recently CCTV report us aircraft carriers and nuclear submarines are successful launch underwater unmanned aerial vehicle (uav).
Already a member of the European Union and Israel are nervous development unmanned aerial vehicle (uav).
Because of the airspace in the future will be dominated by unmanned aerial vehicle (uav).
Described below under the application of rare earth permanent magnets in unmanned aerial vehicle (uav) : with the rare earth permanent magnet materials, power electronics, microelectronics, computer, new control theory and the progress of the theory of motor, rare earth permanent magnet motor technology development is very rapid, shows a wide application prospect in aviation and strong vitality.
The application of rare earth permanent magnet motor in aviation has the following characteristics: 1, due to the high magnetic energy product of rare earth magnet materials, makes the motor can significantly reduce weight, reduce the volume.
Aviation with motor has very strict requirements on the size, weight.
Modern aviation aircraft, each 1 kg weight equipment takes about 15 ~ 30 kg to support the additional weight.
2, high coercive force Hc of rare earth permanent magnet material, remanence Br, thus can produce very big air-gap flux, greatly reduce the permanent magnet rotor diameter, thereby reducing the moment of inertia of the rotor, reduce the time constant, improve the dynamic characteristics of the motor.
3, you can pick and choose the larger air gap width value, so that we can reduce the torque fluctuation caused by the cogging effect, also can inhibit the armature reaction on the fluctuation of torque.
Armature reaction of rare earth permanent magnet demagnetization effect is small, more suitable for sudden reversal, locked-rotor drive and other special performance requirements.
4, the use of brushless dc motor has the following marked characteristics: long service life.
Currently has a brush dc motor is widely used in plane, life is only a few hundred hours.
With the continuous development of aviation technology, the aviation motor factory all face pressure to extend the life of the product technology.
When life calls for increased to 1000 to 2000 hours, have the characteristics of brushless dc motor have been unable to meet the requirements.
Brushless dc motor without brush and commutator, life indicators can be greatly improved.
Suitable for high speed running.
The higher the speed, the motor can do the smaller volume weight.
But because of the limitation of mechanical commutator brush dc motor speed is difficult to further improve based on the current.
Brushless dc motor under the condition of bearing allows, speed can be doubled.
High-altitude commutation cremation increase, affect the reliability and electromagnetic compatibility;
Upper air brush wear, carbon powder insulation performance, reducing the life of motor.
Brushless dc motor is not these problems.
Brushless dc motor of the major heat source on the stator, natural cooling condition is good.
At the same time can easily in the stator housing for oil cooling or water cooling, especially following oil or oil spray cooling can greatly improve the power density of the machine.
For the brush dc motor is very dangerous.
Redundant control is convenient.
The reliability of brushless dc motor on the weak links in the controller and motor winding, flexible redundancy control method.
Has the weak link in the reversing of brush dc motor, more difficult to achieve uniaxial output of redundant control.
Rare earth permanent magnet material of high intrinsic coercive force, magnetic field orientation and thus easier to achieve approximate to the rectangular wave set up in the air gap magnetic field, realize the square wave drive, increase the output of the machine.
Because the rare earth permanent magnet motor has the above a series of advantages, and therefore is very suitable for the performance, size, weight requirements special aviation;
Rare earth permanent magnet brushless dc motor, in particular, is thought to be most promising in the field of the motor.
Linear motor magnets used in where?
According to the query, the magnet track is to put the magnets on the steel.
PS: how long is this motor use?
Under normal use and without life problem, but the collocation of linear slide rail, cable, run trough and so on are consumable, so life is restricted to these parts and materials.
Six years of normal use, there should be no problem.
Our company focus on high performance ndfeb magnets, specifications and shape of heat resistance can be customized in size according to your requirements, welcome to contact us.
Magnet company is the specialized production (
Powerful magnet company, has factories in dongguan city based wangniudun pier town.
Magnet products used in toys, jewelry, crafts gifts, handmade gift box, leather handbags invisible magnetic button, plastic hardware products, audio equipment and other industries.
Our company is located in dongguan city based wangniudun block cao beijiao town five chung village industrial zone, the company can provide customers 24 hours delivery, 36 hours to the customers specifications template.
Magnet experts to find and package your satisfaction, more magnets can view our company website WWW information.
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