CA1106047A - Control unit for thyristor supplied variable speed d- c drives - Google Patents
Control unit for thyristor supplied variable speed d- c drivesInfo
- Publication number
- CA1106047A CA1106047A CA295,558A CA295558A CA1106047A CA 1106047 A CA1106047 A CA 1106047A CA 295558 A CA295558 A CA 295558A CA 1106047 A CA1106047 A CA 1106047A
- Authority
- CA
- Canada
- Prior art keywords
- circuit board
- thyristor
- plugged
- connector
- wiring board
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A29/00—Cleaning or lubricating arrangements
- F41A29/02—Scrapers or cleaning rods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Combinations Of Printed Boards (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Cleaning In General (AREA)
Abstract
Abstract of the Disclosure A control unit for thyristor supplied variable speed d-c drives, in which circuit boards are plugged into a base wiring board (mother board) in which, through a suitable assignment of functions to the individual cir-cuit boards, a control unit which is adaptable to the most varied control problems is obtained.
Description
The invention relates to a control unit for thyristor supplied variable speed d-c drives in general and more particularly to an improved control unit which is adaptable to varied control problems.
Control units for thyristor controlled drives in which the output Signal of a current regulator is fed via an input amplifier to comparators having the outputs of sawtooth integrators controlled by synchronizing volt-ages as inputs are known. The individual output stages for ~he thyristors of a thyristor set connected to a three phase network are tied to the compar-ators and, if needed, a command stage for multi quadrant operation is also provided. A further thyristor set can be addressed via further output stages.
A speed and/or traction control or the like can be selectably superimposed on the current regulator and monitoring units are provided. A unit of this type is described, for instance, in our German Auslegeschrift 1 588 783 laid open February 8, 1973 and in Siemens-Zeitschrift 1971, pages 183 to 185.
In this known arrangement the speed controller, current regulator, command stage and control unit each consist of plug-in units, in which the individual semiconductor elements are arranged on circuit boards with printed circuits ~see Fig. 1 of the literature reference).
A plug-in connector system for electronic subassemblies which are housed in a rack, in which several respective subassemblies can be inserted into electrical plug connections of a subassembly carrier at the rear and where at least part of the contact pins of the connectors of each subassembly carrier go through a base wiring board with a printed circuit and are solder-~d into the printed conductors of the latter is also known (see, for instance, our German Offenlegungsschrift 2 320 255 laid open October 19, 1974).
It has been found that drive controls, subassemblies and components ~uc~ as current re~ulators~ control sets, etc., always fulfill the same pur-poses and other parts such as speed controls, traction controls, etc., fulfill rather similar purposes. It would ~herefore be desirable to provide standard 3Q combinations which are suitable for all types of drive controls which are d~
1~6~7 required. Standard combinations of subassemblies can be wired per se in a simple manner if the contact pins on the pin side of the blade strips go through a wiring board which contains the conductors required for the wiring.
If for economic reasons, one wants to get along with a limited number of base wiring boards, the choice of possible combinations is as a rule very limited.
It is an object of the present invention to apply the above-mentioned concept involving base wiring boards to a circuit of the kind men-tioned at the outset so as to obtain a control unit for thyristor supplied variable speed d-c drives, which is compact and can at the same time be adap-ted to the most varied problems with one base wiring board.
According to the present invention, this problem is solved with the following combination:
a) a base unit, consisting of a rack with a base wiring board at the rear have connectors soldered in and a terminal strip for incoming signals and supply voltages;
b) a circuit board for the power supply and for taking off the synchronizing voltages, which can be plugged into a first connector of the base wiring board;
c) a circuit board which can be plugged into a second connector, and containing a current regulator, a succeeding input amplifier, sawtooth integrators, comparators and output stages of a thyristor set;
d) a circuit board which, if needed, can be plugged into a third connector of the base wiring board, with a command stage for multi-quadrant operation and output stages for addressing a further thyristor set;
e) a circuit board which, if needed, can be plugged into a fourth connector of the base wiring board, for superimposed technical functions such as speed and/or traction control; and, f) a circuit board which, if needed, can be plugged into a fifth connector, for interlocking and/or protection purposes (hereinafter protection 6~47 purposes).
In this manner, related funetions are eombined to sueh an extent that a relatively simple base wiring board will be sufficient in most eases.
Figure 1 is a block diagram of the eleetrieal eireuit of a eontrol unit aeeording to the present invention.
Figure 2 is a sehematie representation of the base wiring board with printed eonduetors.
Figure 3 is a perspeetive view of the raek unit.
Figure 4 is a plan view of the cireuit board for the power supply unit.
Figure 5 is a plan view of the circuit board with the current regu-lator.
Figure 6 is a cross-sectional view showing details of the terminal strip in the base unit.
The armature winding of a d-c motor 1 is fed from a three phase network 4 having phases R, S, T using a reversing thyristor converter free of circulating currents comprising two thyristor sets 2 and 3 anti-parallel eonneeted in a eircuit without eireulating eurrents.
For eontrolling the speed of the d-c motor 1, its actual speed ni, is measured by a tachometer generator 5, the output signal of which is fed, together with a desired speed value ns, to a speed controller 28. The output signal of the speed controller 28 (line 19) is the control input for a cur-rentregulator 8, whieh obtains an aetual armature eurrent value Ii (line 20) with the eorreet sign from a current transformer 40 which is arranged in the armature cireuit of the d-e motor 1. Depending on the direetion of eurrent seleeted, the output signal of the eurrent regulator 8 is brought directly via a switch 16 or via a switch 17 and an inverting amplifier 15 to the input of an input amplifier 9. At amplifier 9 the inverter and rectifier limit angles (~w' ~g) can be set. The output of the input amplifier 9 is connected via the line 22 to the inputs of comparators 11, having as second 1~6C~4~7 inputs the outputs of sawtooth inteerators 10. These sawtooth integrators receive synchronizing voltages Us for the start of the sawtooth integration from a power supply unit 7. This power supply unit 7 at the same time furn-ishes the supply voltages Uv for the individual components. If the output signal of the input ampli~ier 9 and the sawtooth integrators are equal, the respective comparator 11 sends a firing signal to the respective thyristor of the thyristor set 2 via a corresponding output amplifier 12 and the line 32.
Output stages 18 which are connected to the thyristor set 3 via the line 33 are connected to the comparators 11 parallel to the output stages 12. A
command stage 14 is used for cutting off and releasing the individual out-put stages 12 and 18, respectively. Depending on the torque direction de-sired,command stage 14 sets the appropriate control commands on the lines 26 and 27. The command stage 14 executes the following control functions:
Ascertaining the change in polarity at the output of the speed controller 28 (line 25); and, Limiting the speed controller output and disconnecting the control unit by opening the switch 16 via the line 29. Thereby, the control pulses are shifted to the inverter limit and the armature current is decreased rapidly. After the armature current reaches zero and a delay time has passed, the control pulses at the converters then carrying current are blocked by the blocking signal S on the line 26. After a time interval, the current regulator 8 is again coupled to the input amplifier 9 via the inverting amp-lifier 15 and the switch 17, in response to a signal on line 30. In addition, the control pulses for the new torque direction are enabled. At the same time, the limitation of the output of the speed controller 28 is also cancelled (line 23).
Where the command stage 14 does not have corresponding associated switching mechanisms and single quadrant operation is all that is required, a jumper 21 can be placed between the current amplifier 8 and the input ampli-fier 9.
6~7 The connections shown by dashed lines in the circuit according to Figure 1 between the individual components are formed by the wiring on the base wiring board (mother board) 6, which in turn is part of a base unit xO.
The voltage supply 7 is arranged on a circuit board xl which can be .-plugged into the base unit; the curren-t regulator 8, the input amplifier 9, the sawtooth integrators 10, the comparators 11 and the output amplifiers 12 r are arranged on a circuit board x2; the command stage 14, inverting amplifier 15, switches 16 and 17 and the output stages 18 on a circuit board x3; and the speed controller 28 on a circuit board x4.
These assignments are indicated by the circuit board designations xO to x4, which are written in parentheses behind the reference numerals.
The electrical input to the base wiring board 6 for incoming sig-nals are coupled through a termainal strip 63 which is soldered into the base wiring board 6. The electrical connection of the terminal strip 63 at the terminal strip 63 at the base board 6 is designated as 13.
Figure 2 shows the base wiring board (mother board) 6 with the printed conductors 62 and the individual circuit boards xl to x5.
The base rack unit xO shown in Figure 3 is used to tie a maximum of five circuit boards of the control system together mechanically and electric-ally. The housing of the base unit consists of two side parts 64 of sheet Steel, which are bolted together via aluminum section bars 65. The back is formed by the base wiring board 6. The front side is protected by a detachable panel of insulating material, not shown. The base wiring board 6 contains five 31-contact jack strips 611 to 615 as well as a termainal strip 63, which consists of wave soldered terminals 631.
Into these terminals 631, incoming signal lines 632 can be intro-duced and clamped by screws 633. As can be seen, the lower ends of the term-inals 631 are provided with two contact pins 634 which are soldered to the printed conductors 62 on the backside of the base board 6 by wave-soldered 3 0 joints 635 (Figure 6) to obtain an electrical connection.
Figure ~I shows the lay out of the circuit board xl for the power supply and the tak00ff for the synchronizing voltages Us. As can be seen, a transformer 73 and rectifiers 74 are arranged, along with other components, on the circuit board. The components are connected to each other via the printed conductors 75 of the circuit board. A connector strip 72 which, with the jack strip 611 of the base wiring board 6 forms a plug connection issued for electrical connection of circuit board xl to the base wiring board 6.
As can be seen in Figure 5, which shows the layout of the circuit board x2, there can be provided, in addition to the connector strip 82 for the connection to the board 6, a further connector strip 83 which is elec-trically connected to the output amplifiers and onto which the jack strip of a flat signal cable 32 (Figure 1) leading to the thyristor converters can be plugged.
Control units for thyristor controlled drives in which the output Signal of a current regulator is fed via an input amplifier to comparators having the outputs of sawtooth integrators controlled by synchronizing volt-ages as inputs are known. The individual output stages for ~he thyristors of a thyristor set connected to a three phase network are tied to the compar-ators and, if needed, a command stage for multi quadrant operation is also provided. A further thyristor set can be addressed via further output stages.
A speed and/or traction control or the like can be selectably superimposed on the current regulator and monitoring units are provided. A unit of this type is described, for instance, in our German Auslegeschrift 1 588 783 laid open February 8, 1973 and in Siemens-Zeitschrift 1971, pages 183 to 185.
In this known arrangement the speed controller, current regulator, command stage and control unit each consist of plug-in units, in which the individual semiconductor elements are arranged on circuit boards with printed circuits ~see Fig. 1 of the literature reference).
A plug-in connector system for electronic subassemblies which are housed in a rack, in which several respective subassemblies can be inserted into electrical plug connections of a subassembly carrier at the rear and where at least part of the contact pins of the connectors of each subassembly carrier go through a base wiring board with a printed circuit and are solder-~d into the printed conductors of the latter is also known (see, for instance, our German Offenlegungsschrift 2 320 255 laid open October 19, 1974).
It has been found that drive controls, subassemblies and components ~uc~ as current re~ulators~ control sets, etc., always fulfill the same pur-poses and other parts such as speed controls, traction controls, etc., fulfill rather similar purposes. It would ~herefore be desirable to provide standard 3Q combinations which are suitable for all types of drive controls which are d~
1~6~7 required. Standard combinations of subassemblies can be wired per se in a simple manner if the contact pins on the pin side of the blade strips go through a wiring board which contains the conductors required for the wiring.
If for economic reasons, one wants to get along with a limited number of base wiring boards, the choice of possible combinations is as a rule very limited.
It is an object of the present invention to apply the above-mentioned concept involving base wiring boards to a circuit of the kind men-tioned at the outset so as to obtain a control unit for thyristor supplied variable speed d-c drives, which is compact and can at the same time be adap-ted to the most varied problems with one base wiring board.
According to the present invention, this problem is solved with the following combination:
a) a base unit, consisting of a rack with a base wiring board at the rear have connectors soldered in and a terminal strip for incoming signals and supply voltages;
b) a circuit board for the power supply and for taking off the synchronizing voltages, which can be plugged into a first connector of the base wiring board;
c) a circuit board which can be plugged into a second connector, and containing a current regulator, a succeeding input amplifier, sawtooth integrators, comparators and output stages of a thyristor set;
d) a circuit board which, if needed, can be plugged into a third connector of the base wiring board, with a command stage for multi-quadrant operation and output stages for addressing a further thyristor set;
e) a circuit board which, if needed, can be plugged into a fourth connector of the base wiring board, for superimposed technical functions such as speed and/or traction control; and, f) a circuit board which, if needed, can be plugged into a fifth connector, for interlocking and/or protection purposes (hereinafter protection 6~47 purposes).
In this manner, related funetions are eombined to sueh an extent that a relatively simple base wiring board will be sufficient in most eases.
Figure 1 is a block diagram of the eleetrieal eireuit of a eontrol unit aeeording to the present invention.
Figure 2 is a sehematie representation of the base wiring board with printed eonduetors.
Figure 3 is a perspeetive view of the raek unit.
Figure 4 is a plan view of the cireuit board for the power supply unit.
Figure 5 is a plan view of the circuit board with the current regu-lator.
Figure 6 is a cross-sectional view showing details of the terminal strip in the base unit.
The armature winding of a d-c motor 1 is fed from a three phase network 4 having phases R, S, T using a reversing thyristor converter free of circulating currents comprising two thyristor sets 2 and 3 anti-parallel eonneeted in a eircuit without eireulating eurrents.
For eontrolling the speed of the d-c motor 1, its actual speed ni, is measured by a tachometer generator 5, the output signal of which is fed, together with a desired speed value ns, to a speed controller 28. The output signal of the speed controller 28 (line 19) is the control input for a cur-rentregulator 8, whieh obtains an aetual armature eurrent value Ii (line 20) with the eorreet sign from a current transformer 40 which is arranged in the armature cireuit of the d-e motor 1. Depending on the direetion of eurrent seleeted, the output signal of the eurrent regulator 8 is brought directly via a switch 16 or via a switch 17 and an inverting amplifier 15 to the input of an input amplifier 9. At amplifier 9 the inverter and rectifier limit angles (~w' ~g) can be set. The output of the input amplifier 9 is connected via the line 22 to the inputs of comparators 11, having as second 1~6C~4~7 inputs the outputs of sawtooth inteerators 10. These sawtooth integrators receive synchronizing voltages Us for the start of the sawtooth integration from a power supply unit 7. This power supply unit 7 at the same time furn-ishes the supply voltages Uv for the individual components. If the output signal of the input ampli~ier 9 and the sawtooth integrators are equal, the respective comparator 11 sends a firing signal to the respective thyristor of the thyristor set 2 via a corresponding output amplifier 12 and the line 32.
Output stages 18 which are connected to the thyristor set 3 via the line 33 are connected to the comparators 11 parallel to the output stages 12. A
command stage 14 is used for cutting off and releasing the individual out-put stages 12 and 18, respectively. Depending on the torque direction de-sired,command stage 14 sets the appropriate control commands on the lines 26 and 27. The command stage 14 executes the following control functions:
Ascertaining the change in polarity at the output of the speed controller 28 (line 25); and, Limiting the speed controller output and disconnecting the control unit by opening the switch 16 via the line 29. Thereby, the control pulses are shifted to the inverter limit and the armature current is decreased rapidly. After the armature current reaches zero and a delay time has passed, the control pulses at the converters then carrying current are blocked by the blocking signal S on the line 26. After a time interval, the current regulator 8 is again coupled to the input amplifier 9 via the inverting amp-lifier 15 and the switch 17, in response to a signal on line 30. In addition, the control pulses for the new torque direction are enabled. At the same time, the limitation of the output of the speed controller 28 is also cancelled (line 23).
Where the command stage 14 does not have corresponding associated switching mechanisms and single quadrant operation is all that is required, a jumper 21 can be placed between the current amplifier 8 and the input ampli-fier 9.
6~7 The connections shown by dashed lines in the circuit according to Figure 1 between the individual components are formed by the wiring on the base wiring board (mother board) 6, which in turn is part of a base unit xO.
The voltage supply 7 is arranged on a circuit board xl which can be .-plugged into the base unit; the curren-t regulator 8, the input amplifier 9, the sawtooth integrators 10, the comparators 11 and the output amplifiers 12 r are arranged on a circuit board x2; the command stage 14, inverting amplifier 15, switches 16 and 17 and the output stages 18 on a circuit board x3; and the speed controller 28 on a circuit board x4.
These assignments are indicated by the circuit board designations xO to x4, which are written in parentheses behind the reference numerals.
The electrical input to the base wiring board 6 for incoming sig-nals are coupled through a termainal strip 63 which is soldered into the base wiring board 6. The electrical connection of the terminal strip 63 at the terminal strip 63 at the base board 6 is designated as 13.
Figure 2 shows the base wiring board (mother board) 6 with the printed conductors 62 and the individual circuit boards xl to x5.
The base rack unit xO shown in Figure 3 is used to tie a maximum of five circuit boards of the control system together mechanically and electric-ally. The housing of the base unit consists of two side parts 64 of sheet Steel, which are bolted together via aluminum section bars 65. The back is formed by the base wiring board 6. The front side is protected by a detachable panel of insulating material, not shown. The base wiring board 6 contains five 31-contact jack strips 611 to 615 as well as a termainal strip 63, which consists of wave soldered terminals 631.
Into these terminals 631, incoming signal lines 632 can be intro-duced and clamped by screws 633. As can be seen, the lower ends of the term-inals 631 are provided with two contact pins 634 which are soldered to the printed conductors 62 on the backside of the base board 6 by wave-soldered 3 0 joints 635 (Figure 6) to obtain an electrical connection.
Figure ~I shows the lay out of the circuit board xl for the power supply and the tak00ff for the synchronizing voltages Us. As can be seen, a transformer 73 and rectifiers 74 are arranged, along with other components, on the circuit board. The components are connected to each other via the printed conductors 75 of the circuit board. A connector strip 72 which, with the jack strip 611 of the base wiring board 6 forms a plug connection issued for electrical connection of circuit board xl to the base wiring board 6.
As can be seen in Figure 5, which shows the layout of the circuit board x2, there can be provided, in addition to the connector strip 82 for the connection to the board 6, a further connector strip 83 which is elec-trically connected to the output amplifiers and onto which the jack strip of a flat signal cable 32 (Figure 1) leading to the thyristor converters can be plugged.
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a control unit for thyristor supplied variable speed d-c drives, in which the output signals of current regulators are fed via input amplifiers to comparators having as second inputs the outputs of sawtooth integrators controlled by synchronizing voltages and where the individual output stages for the thyristors of a thyristor set are addressed by the comparators and where, if needed, a command stage for multi-quadrant operation is further provided and a further thyristor set can be addressed via further output stages and where, furthermore, a speed and/or traction control or the like is selectably superimposed on the current regulator and wherein monit-oring units are provided, an arrangement permitting adaption to different requirements comprising:
a) a base unit consisting of a housing rack with a base wiring board at the rear, said base wiring board having at least five connectors for circuit boards and a terminal strip for incoming signals and supply voltages soldered thereto;
b) a first circuit board for the power supply and for taking off synchronizing voltages, which can be plugged into a first connector of the base board;
c) a second circuit board, having thereon a current regulator, a succeeding input amplifier, sawtooth integrators, comparators, and output stages of a thyristor set, which can be plugged into a second connector;
d) a third circuit board, having thereon a command stages for multi-quadrant operation and output stages for addressing a further thyristor set, which can be plugged into a third connector of the base wiring board;
e) a fourth circuit board, containing means for providing super-imposed technical functions, which can be plugged into a fourth connector;
and, f) a fifth circuit board, having means for protection purposes thereon, which can be plugged into a fifth connector.
a) a base unit consisting of a housing rack with a base wiring board at the rear, said base wiring board having at least five connectors for circuit boards and a terminal strip for incoming signals and supply voltages soldered thereto;
b) a first circuit board for the power supply and for taking off synchronizing voltages, which can be plugged into a first connector of the base board;
c) a second circuit board, having thereon a current regulator, a succeeding input amplifier, sawtooth integrators, comparators, and output stages of a thyristor set, which can be plugged into a second connector;
d) a third circuit board, having thereon a command stages for multi-quadrant operation and output stages for addressing a further thyristor set, which can be plugged into a third connector of the base wiring board;
e) a fourth circuit board, containing means for providing super-imposed technical functions, which can be plugged into a fourth connector;
and, f) a fifth circuit board, having means for protection purposes thereon, which can be plugged into a fifth connector.
2. The improvement according to claim 1, and further including additional connectors disposed on said second and third circuit boards contain-ing output stages onto which the connectors of flat cables leading to the thyristor sets can be pushed.
3. The improvement according to claim 1, wherein the circuit board for the power supply is arranged close to the wall of the housing of the base unit.
4. The improvement according to claim 1, wherein the terminals of said terminal strip are wave soldered into the base wiring board.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| USP2702968.1 | 1977-01-25 | ||
| DE19772702977 DE2702977A1 (en) | 1977-01-25 | 1977-01-25 | Gun barrel cleaning aid - comprises woven hose pulled over cylindrical cleaning body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1106047A true CA1106047A (en) | 1981-07-28 |
Family
ID=5999483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA295,558A Expired CA1106047A (en) | 1977-01-25 | 1978-01-24 | Control unit for thyristor supplied variable speed d- c drives |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1106047A (en) |
| DE (1) | DE2702977A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032951A (en) * | 1988-04-20 | 1991-07-16 | Schleicher Electronic Gmbh & Co. Kg. | Module for a control system comprising several modules juxtaposed on a carrier |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3174945D1 (en) * | 1981-12-19 | 1986-08-21 | Von Waldenfels Roderi Freiherr | Textile hose material for cleaning gun barrels, and process for making the same |
| US10401116B1 (en) * | 2017-04-07 | 2019-09-03 | Michaels Of Oregon Co. | Pull-through applicator assembly for a firearm |
-
1977
- 1977-01-25 DE DE19772702977 patent/DE2702977A1/en active Pending
-
1978
- 1978-01-24 CA CA295,558A patent/CA1106047A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032951A (en) * | 1988-04-20 | 1991-07-16 | Schleicher Electronic Gmbh & Co. Kg. | Module for a control system comprising several modules juxtaposed on a carrier |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2702977A1 (en) | 1978-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |