SU1483629A1 - Majoritary-backed-up controller - Google Patents

Abstract

The invention relates to automation and telemechanics, in particular to redundant control systems, and can be used to improve the reliability of redundant devices. The purpose of the invention is to increase the reliability of work. The device contains the first power source 1, three switching elements 3-5 with contact groups 10-12, the first and second outputs 15,16. In order to achieve the goal, a second power supply 2, a third output 17, opening contacts of the first and third switching elements 3 and 5, and new functional connections are introduced. 1 il.

Description

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The invention relates to automation and telemechanics, in particular to redundant control systems, and can be used to improve the reliability of redundant devices.

The purpose of the invention is to increase the reliability of work.

The drawing shows the basic scheme of a majority-redundant control device.

The device contains the first and second power sources 1 and 2, three switching elements 3, 4 and 5, the first terminals of which are connected to the common bus 6, and the second terminals to the first, second and third input terminals 7, 8 and 9, the first , second and third contact groups 10, 11 and 12, respectively, of the first, second and third switching elements 3, 4 and 5, the first and second loads 13 and 14, the first output of the first of which is connected to the third output 15 connected to the switching contact of the third contact group 12, which is connected to the disconnecting contact The first contact group 10, the switching contact of which is connected to the first output 16, is connected to the second output of the second load 14, the first output of which is connected to the second output 17, the second output of the first load 13, and the switching contact of the second contact group 11, the closing contact of which connected to the second bus of the first power source 1 and the first bus of the second power source 2, the second bus of which is connected to the closing contact of the third contact group 12, the break contact of which is connected to the switching terminal an act of the first contact group 10, NO con- tact which is connected to the first bus of the first power supply 1.

The device works as follows.

With the arrival of the input signals, the first, second and third switching elements 3, 4 and 5 are activated, connecting the first and second loads 13 and 14 to the sources 1 and 2 of the power supply, respectively.

In case of failure of the element 4, the first and second loads 13 and 14 are connected in series to the first and second power supply sources 1 and 2 connected in series through the closed first and third contact groups 10 and 12 of the switching elements 3 and 5.

Claims (1)

In case of failure in the control of the switching element 3 and the operation of the switching elements 4 and 5, the first load 13 is connected by the second and third contact groups 11 and 12 of the switching elements 4 and 5 to the second power source 2, and the second load 14 is also connected to the second power source 2 Circuit: second bus of the second power source 2, closing, switching contacts of the third contact group 12, opening, switching contacts of the first contact group 10, second output of the second load 14, first output of the second load 14, p Switching, closing the contacts of the second contact group 11, the first bus of the second power source 2. If the control element 5 fails to operate, the device operates in the same way as the switching element 3 fails, only in this case, the first and second loads 13 and 14 are connected to the first power source 1. Various switching relays and contact sensors (position sensors of mechanisms, pressure sensors) can be used as switching elements, as well as receiving relays of the control system can be used as loads. Invention Formula The majority-redundant control unit containing the first, second and third switching elements, the first terminals of which are connected to the common bus, the second terminals to the first, second and third input terminals, the closing contacts of the first, second and third contact groups of the first, second and third, respectively switching elements, the closing contact of the first contact group is connected to the first bus of the first power source, its switching contact is connected to the first output, the switching contact second contact the second group is connected to the second output, characterized in that, in order to increase reliability, it entered the break contacts of the first and third contact groups, break kon514836296 the cycle of the first contact group is connected by an output, the closing contact is not connected to the switching contact of the third contact group connected to a contact group, the opening of the end-second bus of the first power source of which is connected to the switch and the first bus of the second contact of the first contact power supply, the second bus of which of the subgroup, the third-key switching contact to the closing contact of the third contact group is connected to the third contact group.