Intelligent control and adjustment device

• US 6,534,942 B2
• Filed: 01/31/2000
• Issued: 03/18/2003
• Est. Priority Date: 06/02/1997
• Status: Expired due to Term

• Current Assignee: PS Automation GmbH Gesellschaft für Antriebstechnik
• Original Assignee: PS Automation GmbH Gesellschaft für Antriebstechnik
• Inventors: Schmidhuber, Max
• Primary Examiner(s): Dang, Khanh
• Application Number:
  US09/485,019
• Publication Number:
  US 20020074967A1
• Time in Patent Office: 1,142 Days
• Field of Search: 318/599, 318/282, 318/565, 318/626, 318/612, 318/434, 318/286, 318/685, 318/600, 318/563, 318/671, 165/200, 165/201, 165/266, 165/267, 165/270
• US Class Current: 318/563
• CPC Class Codes: G05B 19/4142 characterised by the use of a microprocessor G05B19/4141 takes precedence

Abstract

An intelligent control and regulating device, especially for use in the process technology for flowable substances and media, which is built into the housing of an adjusting drive mechanism or into the drive mechanism itself and which has an adjustment arrangement controlling an adjusting member via an auxiliary energy device depending on sensor signals. The inventive control and adjusting device, which reacts reliably and rapidly to changing ambient conditions, includes a parameterable process regulator which receives adjustment input signals from the external sensors.

Claims

1. An intelligent control and regulating device for use in regulating the flow of materials, and comprising:

an actuator operatively associated with a means for controlling the flow of said materials, said actuator having a housing;

a parameterable process controller (15) as an intelligent control and regulating device, which receives input signals for regulation from external sensors (17, 18, 19) supplying process-specific data, and which controls said actuator from an auxiliary energy unit in response to said signals from said sensors,

wherein said controller is integrated within the housing of the actuator.

2. An intelligent control and regulating device according to claim 1, wherein the process controller (15) is adapted to be parameterized with actuator-specific data after the initial assembly of the modules (10, 11, 12) with the actuator.

3. An intelligent control and regulating device according to claim 2, wherein the process controller (15) is a P, PI or PID controller.

4. An intelligent control and regulating device according to claim 3, wherein a PID controller is provided for setting the proportionate range, holding and adjusting times independently of each other, subsequent to initial assembly.

5. An intelligent control and regulating device according to claim 2, wherein the process controller (15) is a micro-processor.

6. An intelligent control and regulating device according to claim 1, wherein an operating panel (13) for manual control of the actuator and/or parametering of the actuator functions is connected to the power module (11).

7. An intelligent control and regulating device according to claim 6, wherein the operating panel (13) is attached to the actuator.

8. An intelligent control and regulating device according to claim 6, wherein the operating panel (13) is connected to the actuator by a plug-in connection.

9. An intelligent control and regulating device according to claim 6, wherein the operating panel (13) is adapted for permanent wall fixing and is connected by cable to the power module (11).

10. An intelligent control and regulating device according to claim 1, wherein, the power module (11) has stored internal actuator-specific data in a non-erasable memory bank (22) so that they can be diagnosed.

11. An intelligent control and regulating device according to claim 10, wherein the stored internal, actuator-specific data can be read using either an integrated serial interface (23) integrated into the power module (11) or an interface module (12) through the data bus.

12. An intelligent control and regulating device according to claim 1,

wherein the actuator is connected to a valve (8), and wherein, subsequent to connecting the actuator to the valve (8), an automatic initializing run is programmed into the control unit, during which the actuator and the limit positions are automatically adjusted to the valve (8).

13. An intelligent control and regulating device for use in regulating the flow of materials, and comprising:

an actuator operatively associated with a means for controlling the flow of said materials, said actuator having a housing;

a parameterable process controller (15) as an intelligent control and regulating device, which receives input signals for regulation from external sensors (17, 8, 19) supplying process-specific data, and which controls said actuator from an auxiliary energy unit in response to said signals from said sensors,

wherein said controller is integrated into the housing of the actuator or attached to the actuator, and

wherein said process controller (15) is part of a power module (11), and further including an interface module (12) bi-directionally connecting a central control unit (14) with said process controller (15).

14. An intelligent control and regulating device according to claim 13, wherein said power module (11) has, besides the process controller (15), an auxiliary energy control (25) and is connected through inlets to internal sensors (20, 21) supplying actuator-specific data, and to external sensors (17, 18, 19) supplying process-specific data.

15. An intelligent control and regulating device according to claim 13, including a modular mains transformer for supplying energy to the power module (11).

16. An intelligent control and regulating device according to claim 13, wherein the interface module (12) is a plug-in unit.

17. An intelligent control and regulating device according to claim 13, wherein the interface module (12) is adapted to transfer data to the central control unit (14) using analogue and/or binary signals.

18. An intelligent control and regulating device according to claim 13, wherein using the interface module (12), data is exchanged with the central control unit (14) by a serial data transfer using a data bus.

19. An intelligent control and regulating device according to claim 13, wherein the interface module (12) is connected to the surroundings electrically using a potential-free relay.

20. An intelligent control and regulating device according to claim 14, wherein the process control (15) is connected either to internal sensors (20, 21) for monitoring the actual position and/or the actuating forces or torques exerted at the output of the actuator.

21. An intelligent control and regulating device according to claim 14, wherein the process controller (15) acts upon the auxiliary energy control (24) using the auxiliary energy unit (2).

22. An intelligent control and regulating device according to claim 21, wherein the auxiliary energy unit (2) is an electronically regulated motor.

23. An intelligent control and regulating device according to claim 22, wherein the motor (2) is a DC motor and the torques and nominal force are calculated from the motor current.

24. An intelligent control and regulating device according to claim 21, wherein the auxiliary energy unit (2) is a pneumatic unit.

25. An intelligent control and regulating device according to claim 21, wherein the auxiliary energy unit (2) is a hydraulic unit.

26. An intelligent control and regulating device according to claim 13, wherein the actuation parameters are read in using the interface (23) which is integrated into the power module (11).

27. An intelligent control and regulating device according to claim 14, wherein the values measured by the internal (20, 21) and external sensors (17, 18, 19) are calculated as process characteristic magnitudes inside the power module (11) and transmitted to the central control unit (14) using the interface module (12).

28. An intelligent control and regulating device according to claim 13, wherein correction data for an improved quality of control are stored in the power module (11).

29. An intelligent control and regulating device for use in a regulator for regulating the flow of materials, which includes a microprocessor for effecting the control of the flow of said materials, determining a position intended value for an actuator of the regulator based on sensor signals, wherein the regulator uses an auxiliary energy unit to control the actuator;

thereby characterized,

that the regulating device is a parameterable process controller (15) which simultaneously carries out the function of a position controller (25) for the positioning element (8) and receives input signals for regulation from external process-specific sensors (17, 18, 19), and from a comparison of (a) a process intended value which had been preset in a central control unit (14) and (b) a process actual value which is determined from the signals transmitted by the external sensors (17, 18, 19), determines the position intended value,

wherein drive circuitry (3) including said parameterable process controller (15) is integrated within the housing (9) of the actuator or is attached to the actuator.