GB936474A - Apparatus having a magnetically suspended movable body, the position of which is stabilized by an electronic device comprising a high-frequency oscillator - Google Patents
Apparatus having a magnetically suspended movable body, the position of which is stabilized by an electronic device comprising a high-frequency oscillatorInfo
- Publication number
- GB936474A GB936474A GB134260A GB134260A GB936474A GB 936474 A GB936474 A GB 936474A GB 134260 A GB134260 A GB 134260A GB 134260 A GB134260 A GB 134260A GB 936474 A GB936474 A GB 936474A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillator
- stabilized
- valve
- anode
- energization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000004075 alteration Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G7/00—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups
- G01G7/02—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups by electromagnetic action
- G01G7/04—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups by electromagnetic action with means for regulating the current to solenoids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
- G01M1/22—Determining imbalance by oscillating or rotating the body to be tested and converting vibrations due to imbalance into electric variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/10—Arrangements of bearings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
936,474. Automatic control of electromagnetic suspension. CESKOSLOVENSKA AKADEMIE VED. Jan. 14, 1960 [Jan. 16, 1959], No. 1342/60. Class 38 (4). In a system in which variations in the vertical position of an electromagnetically suspended body influence a pick-up coil forming part of the grid circuit of an electronic oscillator, the consequent changes in output of which control the energization of the suspending eleotromagnet, the oscillator anode supply is retroactively stabilized and the oscillator valve internal capacity is neutralized by 50% at least. In Fig. 3, vertical movement of a ferro -magnetic body A alters the tuning of the grid circuit of a high-frequency tuned-anode tuned-grid oscillator E1, the interelectrode capacity of which is partly neutralized by capacitors C4, C5. Consequent alteration of the oscillator output, which is rectified by a valve E2, controls, through an amplifier E3, the energization of a supporting electromagnet L2 so that the force exerted on the body is adjusted to maintain the body in a fixed vertical position. The anode supply to the valves is derived from an A.C. source through a full-wave rectifier E7 and the applied voltage is stabilized by applying it through a potentiometer R7 and an amplifier E5 associated with a glow discharge valve E6 to control valves E4 connected in series with the supply. Applications to low friction bearings for weighing and force measuring apparatus, rotor balancing and ball-bearing flaw detection are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS31759 | 1959-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB936474A true GB936474A (en) | 1963-09-11 |
Family
ID=5335071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB134260A Expired GB936474A (en) | 1959-01-16 | 1960-01-14 | Apparatus having a magnetically suspended movable body, the position of which is stabilized by an electronic device comprising a high-frequency oscillator |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH400393A (en) |
| DE (1) | DE1231910B (en) |
| FR (1) | FR1249562A (en) |
| GB (1) | GB936474A (en) |
| NL (1) | NL247412A (en) |
-
1960
- 1960-01-08 CH CH23760A patent/CH400393A/en unknown
- 1960-01-13 DE DEC20551A patent/DE1231910B/en active Pending
- 1960-01-14 GB GB134260A patent/GB936474A/en not_active Expired
- 1960-01-15 NL NL247412D patent/NL247412A/xx unknown
- 1960-01-15 FR FR815783A patent/FR1249562A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH400393A (en) | 1965-10-15 |
| FR1249562A (en) | 1960-12-30 |
| DE1231910B (en) | 1967-01-05 |
| NL247412A (en) | 1964-02-10 |
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