Floating electromagnetic suspension system专利检索-反激变换器变压器和转换设备专利检索查询-专利查询网

Floating electromagnetic suspension system

阅读：6发布：2022-01-04

专利汇可以提供Floating electromagnetic suspension system专利检索，专利查询，专利分析的服务。并且A carriage traveling along a track of magnetically permeable metal is supported at one or more points by electromagnets energized by a variable current to maintain a predetermined spacing between the magnet poles and the overlying track. This sdpacing is sensed by a control circuit which comprises a magneto-electric transducer including a permanent megnet juxtaposed with a Hall-effect generator which is located in the stray field of an associated electromagnet and whose output controls the energization of the latter, the two magnets being so poled as to create a negative-feedback effect stabilizing the operation of the control circuit.，下面是Floating electromagnetic suspension system专利的具体信息内容。

权利要求

1. A floating carriage-suspension system comprising: magnetically permeable rail means provided with a guide surface; support means on a carriage movable along said rail means, said support means including an electromagnet with a pole face spaced from said guide surface and an energizing circuit for said electromagnet; sensing means on said support means for monitoring the distance of said pole face from said guide surface, said sensing means including a magneto-electric transducer disposed in the path of lines of force from said electromagnet for generating an output signal varying in the same sense in response to an increase in said distance and to a decrease in the field strength of said electromagnet; and control means in said energizing circuit responsive to said output signal for modifying the energization of said electromagnet to compensate for variations in said distance and said field strength, with negative magnetic feedback between said electromagnet and said sensing means.

2. A system as defined in claim 1 wherein said transducer comprises a permanent magnet in aiding relationship with the lines of force from said electromagnet and a Hall-effect generator interposed between said permanent magnet and said rail means.

3. A system as defined in claim 2 wherein said energizing circuit comprises a source of direct current, said control means including a voltage divider connected across said source in bucking relationship with a pair of output terminals of said Hall-effect generator.

4. A system as defined in claim 3 wherein said energizing circuit further comprises a differential amplifier with input terminals connected across taps of said voltage divider on opposite sides of said output terminals.

5. A system as defined in claim 4 wherein said Hall-effect generator has input leads connected across said source at junctions with said voltage divider bracketing said taps.

6. A system as defined in claim 5, further comprising a low-resistance reference impedance connected across said junctions.

7. A system as defined in claim 6 wherein said reference impedance comprises the forward resistance of a silicon diode.

8. A system as defined in claim 5 wherein sections of said voltage divider between said junctions, said taps and said output terminals are proportioned to maintain a voltage across said input terminals substantially independent of the source voltage.

9. A system as defined in claim 2 wherein said transducer comprises a magnetically permeable base for said permanent magnet disposed substantially at the level of said pole face.

10. A system as defined in claim 9 wherein said transducer and said electromagnet are mounted alongside each other beneath said guide surface.

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