GB1360807A - Auto-manual electrically-operable controller - Google Patents
Auto-manual electrically-operable controllerInfo
- Publication number
- GB1360807A GB1360807A GB5081171A GB5081171A GB1360807A GB 1360807 A GB1360807 A GB 1360807A GB 5081171 A GB5081171 A GB 5081171A GB 5081171 A GB5081171 A GB 5081171A GB 1360807 A GB1360807 A GB 1360807A
- Authority
- GB
- United Kingdom
- Prior art keywords
- auto
- manual
- integrator
- controller
- fed
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B7/00—Arrangements for obtaining smooth engagement or disengagement of automatic control
- G05B7/02—Arrangements for obtaining smooth engagement or disengagement of automatic control electric
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Feedback Control In General (AREA)
Abstract
1360807 Auto/manual controller PRZEMYSLOWY INSTYTUT AUTOMATYKI I POMIAROW 2 Nov 1971 [16 Nov 1970] 50811/71 Heading G3R In an auto/manual controller, smooth switching is effected between a manual control, including an integrator, and an automatic control having a proportional and integral characteristic. As shown, a process variable Xwe is fed to a differential circuit D, and is compared, in summer S1 with a pre-set value X o to produce an error signal E which is fed to a proportional circuit P and integrator I, the PID circuits forming the auto controller. When the auto mode is selected, ganged contacts Sk1, Sk2, of switch Pr, are connected to contacts A, the output Z of the integrator I being fed through resistor R1 to a further integrator C, which forms part of the manual controller, and which acts as a time delay in the auto selected mode due to feedback resistor R2. A smooth auto to manual changeover is achieved since the controller output V is held by the time delay at its last value before changeover until selection of manual control, when control signals +U or -U are fed directly to integrator C via contacts R of switch Pr. Changeover from manual to auto is also smoothed because the output Z of integrator I, which acts as a time delay in the manual selected mode, follows the controller output V, due to feedback resistors R1 R2. In Fig. 2 (not shown) the integrating, proportional differential circuits and summer S2 are amplifiers with appropriate feedback elements, which may include potentiometers to vary the parameters of the automatic control.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL14444570A PL73508B1 (en) | 1970-11-16 | 1970-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1360807A true GB1360807A (en) | 1974-07-24 |
Family
ID=19952758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5081171A Expired GB1360807A (en) | 1970-11-16 | 1971-11-02 | Auto-manual electrically-operable controller |
Country Status (9)
Country | Link |
---|---|
CS (1) | CS150926B2 (en) |
DE (1) | DE2155080A1 (en) |
FR (1) | FR2113974B1 (en) |
GB (1) | GB1360807A (en) |
HU (1) | HU166906B (en) |
IT (1) | IT942845B (en) |
PL (1) | PL73508B1 (en) |
RO (1) | RO59835A (en) |
SU (1) | SU593676A3 (en) |
-
1970
- 1970-11-16 PL PL14444570A patent/PL73508B1/xx unknown
-
1971
- 1971-11-02 GB GB5081171A patent/GB1360807A/en not_active Expired
- 1971-11-05 DE DE19712155080 patent/DE2155080A1/de active Pending
- 1971-11-11 RO RO6871071A patent/RO59835A/ro unknown
- 1971-11-12 CS CS793171A patent/CS150926B2/cs unknown
- 1971-11-15 IT IT7072271A patent/IT942845B/en active
- 1971-11-15 SU SU711715681A patent/SU593676A3/en active
- 1971-11-15 FR FR7140761A patent/FR2113974B1/fr not_active Expired
- 1971-11-16 HU HUPE000802 patent/HU166906B/hu unknown
Also Published As
Publication number | Publication date |
---|---|
FR2113974A1 (en) | 1972-06-30 |
IT942845B (en) | 1973-04-02 |
PL73508B1 (en) | 1974-10-31 |
RO59835A (en) | 1976-04-15 |
CS150926B2 (en) | 1973-09-17 |
HU166906B (en) | 1975-06-28 |
FR2113974B1 (en) | 1977-01-28 |
SU593676A3 (en) | 1978-02-15 |
DE2155080A1 (en) | 1972-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |