DE2151608A1 - DEVICE FOR HOVER CONTROL OF A MAGNETIC LIFTING VEHICLE - Google Patents

Description

Device for levitation control of a magnetic levitation vehicle

The invention relates to a device for generating feedback variables for control loops for regulating the levitation of a Magnetic levitation vehicle.

To dampen such control loops that are provided with a position feedback in such a way that the distance between Suspended vehicle and guide or support rail measured inductively or capacitively and in the form of a current or voltage signal is fed to the summation point of the control loop, additional feedback variables are required. For this it has been suggested to use the solenoid current (DRP 644 3o2) or the acceleration of the hovercraft as additional Return variable to be used (Die Bundesbahn, 8/1969, Sej te 2/72, right column).

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There is no direct connection with the current return between the movement of the floating vehicle to be controlled in its position and the returned measured variable, since the Magnetic current with the same magnetic force can be different depending on the size of the air gap.

The use of the acceleration of the hover vehicle as a feedback variable cannot be implemented if unavoidable V / gauges are used for the operation of hover vehicles where the carrying and guiding magnets are attached to the Support and guide rails and the support and guide anchors are arranged on the hover vehicle.

Based on the fact that the force acting on the controlled system can also serve as a feedback variable for a control loop Acts object, the invention is based on the object of a particularly simple but effective return for the levitation control of a magnetic levitation vehicle create.

This object is achieved according to the invention in that the respective magnetic forces alH Feedback signals are used, preferably from strain gauges are removable.

The strain gauges are on the magnetic levitation vehicle and / or arranged on parts of a switch of the support and guide rail system of the magnetic levitation vehicle.

In this amazingly simple way, a force feedback is achieved in the levitation control, in which a direct Relationship between the movement of the suspended vehicle to be regulated in its position and the returned measured variable consists. It is only necessary to ensure that the

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called strain gauges such mechanical elements of the magnetic levitation vehicle or the rail system where there is a reproducible relationship between material expansion and the force to be transmitted.

The invention is described in more detail with reference to two exemplary embodiments shown in the drawing. In detail own:

Fiß'ir 1 a part of a magnetic levitation vehicle with -a » carrying and PUhrurig magnets attached to this in parallel projection and

Figure 2 a part of a magnetic levitation vehicle with this attached anchor anchor.

A magnetic levitation vehicle 3 has a number of carrying and guiding magnets on its chassis 4, of which only the carrying magnet 5 is shown in FIG. 1. Each magnet is held by two cross members 6 and ″ { , which are rigidly connected to the chassis 4.

On these traverses are two strain gauges near the chassis 4 D. and Dp which are the feedback signals for the control loops, not shown here, for the ii .-. ^ neiisohe Sohweoregulation of the levitation vehicle 3 deliver.

y.ir, help four tra ^ e and guide troughs will the suspension ear '... e.ir ent ι an "? guided by support rails that j, ·) Fi. ::. 1 ;: i angle rails Ic are joined together, only one of .ienen eueni'alis is shown. Via brackets 11 are fixed angle rails 12 on-bar, which are anchored in the route, which is not shown here.

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In Pig. 2 shows a part of a switch construction, not shown here, in which the support and guide magnets for the magnetic levitation vehicle j5 are arranged fixed to the route. Of the required support and guide magnets, only the support magnet 2o is shown in FIG. which is held by angular cross members 21 and 22, which are anchored in the route 2J. With the carrying and guide magnets work together anchor rails 24, the with chassis 4 of the magnetic levitation vehicle> are firmly connected.

Here, too, are used to generate the force feedback signals for the control loop, not shown, strain gauges D ^ and Dji, on which the support and guide magnets hold Traverses 21 and 22 arranged.

During operation, those in the magnet holders Any forces occurring are transmitted to the strain gauges D and converted there into electrical signals that are connected to the control loop, not shown here, as feedback signals. When arranging the strain gauges D must ensure that they have such mechanical elements on the hover vehicle or on the switch parts are attached where there is a reproducible relationship between material expansion and the transferred Strength exists.

Claims: -5-

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Claims (4)

Messerschmitt-Bölkow-Blohm Ottobrunn, October 13, 1971 company with limited liability B51I Pu / sz Munich - patent claims 1. \ Device for generating feedback variables for control loops for levitation control of a magnetic levitation vehicle, characterized by the use of magnetic forces as feedback signals generated by Deh- ^ voltage gauges (D) are removable. 2. Device according to claim 1, characterized in that the strain gauges (D) on the Magnetic levitation vehicle (3) are arranged. 3. Device according to claim 1, characterized in that the strain gauges (D) on Parts of a switch (21,22) of the guide and guide rail system (10) of the magnetic levitation vehicle (3) are arranged. 4. Device according to one or more of the preceding claims, characterized in that the strain gauges (D) via mechanical elements (cross members) on the magnetic levitation vehicle (3) or on the and guide rail system (10) are attached. 309816/0189 Blank page