GB1175407A - Improvements in and relating to the Control of Direct Current Motors - Google Patents
Improvements in and relating to the Control of Direct Current MotorsInfo
- Publication number
- GB1175407A GB1175407A GB1844467A GB1844467A GB1175407A GB 1175407 A GB1175407 A GB 1175407A GB 1844467 A GB1844467 A GB 1844467A GB 1844467 A GB1844467 A GB 1844467A GB 1175407 A GB1175407 A GB 1175407A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- control
- field
- speed
- varying
- 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
- 230000000694 effects Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/182—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations
- B65H23/185—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations motor-controlled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
- B65H23/198—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations motor-controlled (Controlling electrical drive motors therefor)
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Control Of Multiple Motors (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
1,175,407. Control of D.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 20 March, 1968 [21 April, 1967], No. 18444/67. Heading H2J. [Also in Division G3] A D.C. motor coupled to a reel of flexible material is controlled during a first period by varying the armature current in dependence upon the diameter of the coil and a desired tension in the material while keeping the field constant, and thereafter by varying the armature current according to the linear speed of and the desired tension in the material while varying the field to keep the back e.m.f. substantially constant. The armature current is measured at 14 and is compared with a reference at 13 to control a static converter or Ward-Leonard generator 3 supplying the armature 1. Two reference signals are produced and whichever is the greater is selected by a discriminator 14a. The first, which is effective up to full-speed at full field, is the product of T representing desired strip tension and a signal R representing the actual radius of the coil, which is deduced from measurements of the reel speed v and the strip speed f. The second reference is effective during field control and is the product of T and f. The signal T may be modified by a signal FS which is a function of reel speed to represent the effect of friction and windage, and also by an " extra torque signal " produced by multiplying an " accelerating signal " AS by a signal INS representing the inertia of the system, from a unit 23 responsive to the computed radius R. The product Tf may be modified by units 19 and 25 which introduce a value X representative of the slight change in back e.m. while it is held nominally constant. The back e.m. is measured at 6 and is shaped by a unit 9 to control a field amplifier 12 which has a feedback loop through a regulator 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1844467A GB1175407A (en) | 1967-04-21 | 1967-04-21 | Improvements in and relating to the Control of Direct Current Motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1844467A GB1175407A (en) | 1967-04-21 | 1967-04-21 | Improvements in and relating to the Control of Direct Current Motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1175407A true GB1175407A (en) | 1969-12-23 |
Family
ID=10112536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1844467A Expired GB1175407A (en) | 1967-04-21 | 1967-04-21 | Improvements in and relating to the Control of Direct Current Motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1175407A (en) |
-
1967
- 1967-04-21 GB GB1844467A patent/GB1175407A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |