FR2533717A1 - METHOD AND DEVICE FOR REGULATING A MODULAR SYSTEM - Google Patents

Abstract

A.PROCEDE FOR THE ELECTRONIC REGULATION OF A MODULAR SYSTEM. B. PROCESS CHARACTERIZED IN THAT, FOR THE INDIVIDUAL FUNCTIONAL MODULES 11 TO 13, REGULATORS 14 TO 16 ARE USED RESPECTIVELY OPERATING IN AUTARCY, WHILE WITH A PILOT COMPUTER 25 SET VALUES 34 TO 36 ARE GIVEN IN ADVANCE , DEPENDING ON THE OPERATION AND APPLICATION, TO INDIVIDUAL REGULATION CIRCUITS TO OPTIMALIZE THE WHOLE SYSTEM 10. C. THE INVENTION CONCERNS THE ELECTRONIC REGULATION OF MODULAR SYSTEMS.

Description

Method and device for regulating a system

modular ".

  The invention relates to a method for regulating

  the electronic system of a modular system, a system constituting in its entirety a functional unit and

  whose functional modules are individually adjustable

  LEMENT. In different fields, it is necessary to use groups of subassemblies whose individual subsets or modules are functionally correlated and require control or regulation taking into account

  different criteria, determined on the basis of

  economic, functional and technical considerations of manufacturing Taking into account also these considerations, the methods of adjustment are chosen by being adapted to the case of application considered, the setting

  implementation of computers for the setting process

then a wide application.

  Controllers controlled by computers allow

  optimize the functioning of a system

  according to points of view that can be selected.

  To simplify technically the realization, it is

  known (DE-OS 3 499 938) to use an electronic control

  central control unit, by means of which the control elements of an internal combustion engine and those of two hydraulic pumps driven by this engine are controlled. In the case of a central control of this type, the data processing and the establishment signals must be adapted to the adjustment process, and therefore be carried out rapidly, which greatly limits the possibility of implementation of computers and the taking into account of control or influence signals for the adjustment process. The known method has the disadvantage that, as a result of a failure of the central control, all the control and therefore the internal combustion engine-pump system, is blocked. The object of the invention is to create a method of the type

  originally mentioned, thanks to which a system

  so many modules can be optimally exploited

  male in a particularly simple way with security

  and by responding in its entirety to the requirements imposed.

  This object is achieved according to the invention in that, for the individual functional modules, regulators operating in autarky are used respectively, whereas with a pilot computer setpoints are given in advance, as the case may be. of operation and application, to the individual control circuits for optimizing the entire system, these setpoints being determined from values

  measurement and other control signals, according to cri-

  predetermined for the particular application case.

  This gives a flexible regulation, which can be implemented in a universal manner, and which can be carried out with simple means as regards

  the technique of realization, while allowing the exploitation

  to a large extent in a safe and optimal way.

  Thanks to the combination of automatic control circuits

  functional components of a modular system,

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  a degree of safety is obtained in relation to the known methods in which a failure of the pilot computer has no influence on the continued operation of the control circuits or components, and therefore the entire system. also means that the driver computer can be unplugged

  to allow for its maintenance or change of

  grams even during the operation of the system, and

  without it being necessary to interrupt this one.

  The method according to the invention has this other important advantage that, thanks to it, a system can be adjusted taking into account all the sizes

  desired pertaining to or outside the system

  at the same time, an exchange of modules or

  control circuits is possible without the need for

  It is therefore possible not only to change the damaged control circuits, but also to provide for an exchange of the 2-0 component modules, as well as the use of the control computer. incorporation into the regulation of the system of common commercial components

  with the regulators associated with them.

  site only an adaptation of the computer program

tor.

  Because of the ability to operate independently

  different control circuits, the limits for the choice of the calculator are not as strict as in the known method, since in

  the process according to the invention, no adaptation in the -

  time of computer operation in the cycle of

  cooking is not necessary Thanks to the

  sequential transfer of data from the computer to the control modules, the transmission can be carried out slowly so that one can, on the one hand, use a computer 'working slowly and, secondly, programs of

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  wide range in which all conceivable influences for the establishment of

  setpoints for the optimization of the ex-

  The method according to the invention also has the advantage that a computer can be provided.

  pilot capable of being implemented universally

  saddle, and which is equipped with a large number of

  Adjustments for the control circuits Adaptation to the considered application case is then performed only in software. For adaptation to the considered application case, the data on the properties of the functional modules, such as the characteristic fields and other specific characteristics of the modules, are stored in the control computer and for the optimization of the operation. , the setpoints are set at

  from these data, according to specific characteristics

system.

  The process according to the invention is particularly suitable

  primarily for the control of power transmission systems with any number of engines and feature converters whose fields

  characteristics on the basis of the possibilities previously

  and overall strategic points of view can be optimally combined in setting the target values.

  cases and in others, where external influences

  tures can affect the operation of the system, such as pressure, temperature, external influences affecting the speed of operation, it is advantageous that these influences can be taken into account in the establishment of the set values through the system.

  of the superimposition of signals of appropriate influence

  Therefore, the entire system or individual functional modules can be adapted to the profile

  of specification considered for use in order to save

  primary energy, increases, for example

  performance, due to temporary situations.

  Similarly, we can take into account in the

  regulation of the memories associated with the transmission system.

  mission of forces, in that the known characteristics

  functional modules, such as the type of memory

  tion, are introduced in the pilot computer, this

  memorisation which can be done in a hydromechanical form.

  pneumatic, mechanical, electrical or chemical.

  An exemplary embodiment according to the invention

  is schematically represented in each of the drawings.

  FIG. 1 shows the application of the adjustment method to a modular system of a standard type which is, for example, made up of three subassemblies 1 to 13

  in functional unit 10 to each of the subassemblies

  It is associated with a regulator 14 to 16, these regulators individually receiving the associated subassembly signals 17 to 19, and transforming them into

  corresponding adjustment signals 20 to 22

  14 to 16 are designed in such a way that they can automatically carry out a command of the subassembly

  associated with essential functional criteria.

tial.

  To the different control circuits 11, 17, 14, 20

  12, 18, 15, 21 and 13, 19, 16, 23 is associated with a computer

  superimposed driver 25, which is likely to be

  strung by a data line 26 to a large number

  of signal transmitters and receivers.

  Thanks to the broad conception of the pilot computer, one can envisage a computer-capable of being put in

  universally applicable, and suitable for the manufacture of

  This computer is likely to be used for any modular systems with

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  any data entry palette, By memory

  sation of characteristic data 27, specific to the system, such as, for example, features and characteristic fields of the individual components 11 to 13 and 1, functional unit 10, by the introduction of measurement signals 28 consisting of magnitudes of state 29 to 31 of the functional modules 11 to 13 and external quantities 32, for example the pressure and the temperature, as well as the introduction of other control signals

  superimposed, for example by an operator, and a

  corresponding computation gram by which the pilot computer establishes setpoint signals 34 to 36 for the control circuits, signals which take into account desired optimization criteria, guarantee a

  optimal operation of the functional unit 10.

  Finally, it can also be planned

  38, as well as printers,

  which periodically or continuously

  naked, indicate diagnostics of operational data.

  etc. An interruption in the data lines, as well as the bench of the pilot computer, has no influence on the continued operation of the system to be regulated Individual components 11-10, 12 to 15 or 13 to 16, because of the autarchic operation of the regulators 14 to 16 associated with them, can continue their normal operation under the limitation of certain optimization criteria In this way, a short disconnection of the introduction of the

  setting variables during the operation of the

  it is possible to undertake any

  modifications or repairs in the transmission network

  In addition, the system components can be replaced or combined in any way, as is the practice

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  for example in the construction of motor vehicles

  and in other areas It is thus that often the same functional units are, according to the needs or the wishes of the customers, equipped with different types of modules. An application of the regulation described above

  is possible for example in transmission systems.

  forces, such as they are for example common in power plants An example of realization on this subject

  shown in Figure 2 The functional unit is composed of

  of a prime mover 40, a converter of

  characteristics 41 and a receiving machine 42, a.

  the power regulator 43 and an adjusting member 44 being associated with the prime mover 40 The power regulator 43 receives the rotational speed values of the prime mover 40 and the state values 46 of the regulator 44 and , taking into account the characteristic curve of the prime mover, adjusts it autonomously. Similarly, the characteristic converter 41 with a transmission regulator 47

  associated with it, constitutes a control circuit

  tonome 41, 49, 47, 48, taking into account, in addition, the

output rotation speed 50.

  The system is furthermore equipped with a power accumulator 51 which can receive the energy of the converter

  characteristics and return it to him when needed.

  These control circuits are associated with a computer

  pilot 53 to influence individual regulation

  so that by combining state quantities of the whole

  system and boundary conditions, a function of

  of the system as a whole according to the criteria

  wished to be ensured A c-and effect, the computer

  receives information about the rotational speed of

  45, on the output rotational speed 50,

  on state 52-of the energy accumulator 51 and by the in-

  auxiliary detection 55, information

  tioans on pressure, temperature, exhaust, and similar system data as well as operating conditions 56 Using these data and taking into account specific system criteria given to the system. In advance, the pilot computer establishes the reference values 60 and 61 for the power regulator 43 or for the transmission regulator 47. Because the control circuits operate in isolation, the transmission of these values

  60 or 61 is independent of the speed required.

  for the adjustment process, which, in

  general rule, must be very high. It is therefore

  possible to take into account in the program of the

  number of criteria and data to approximate as much as possible in the determination of the nominal values 60, 61, the ideal setpoints, although thus the transmission of data from the pilot computer to the control circuit is carried out

slower.

  Figure 3 shows another example of application.

  This is a drive unit 65 to 67 for vehicles, an autacirque adjustment circuit being associated with the first module 65, namely a motor, for example a diesel engine, while an autacirque control circuit

  69 is associated with the gearbox 66.

  data line 70 data set signals

  72 or 73 established by a computer 71 housed in the vehicle

  in a remote location, are provided in advance

  to the control circuits 68 and 69. For this purpose, the computer

  receive the corresponding status or function signals

  75 of the vehicle 67 or the combination of

  In addition, function condition signals

  driver-provided 76 are entered into the computer 71 If necessary, it is possible to

  to connect to the data line 70 a source of information

77.

  In the control method described here, can also be integrated and operated by the pilot computer, complex information systems An embodiment for vehicles-is shown in Figure 4, in which an information system 77 'is found in exchange for data with the driver computer 71 Grace

  80 associated with the information system, may

  may be, on the one hand, indicated the signals or data

  transmitted to the pilot computer for the process of

  The disassembly of the control system allows the introduction of diagnostic unit 81 as well as other important data supplies such as, for example, the state of protection against the sliding of an anti-lock system, so that the driver can obtain global information on the state of the vehicle,

  on its consumption, and on the sources of defects 4 -

  The radio sets 83, 84 needed on many

  many commercial vehicles can be in this case,

  included in the information system.

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Claims (1)

CLAIMS) A method for the electronic control of a modular system, a system constituting in its entirety a functional unit and whose functional modules are individually adjustable, characterized in that for the individual functional modules (11 to 13) respectively regulators (14 to 16) operating in autarky, while with a control computer (25) set values (34 to 36) are given in advance, depending on the operating and application case, to the individual control circuits for optimizing the entire system (10), these setpoints being determined from measured values and other control signals according to predetermined criteria for the considered application case. . Method according to Claim 1, characterized in that data on the properties of the functional modules (11 to 13) are stored in the control computer (25), the setpoints (34 to 36) being set from of these data according to specific characteristics of the system. A method according to claim 1 or 2, characterized in that the setting of the set point (34 to 36) is influenced by superimposed influence signals (33) to enable adaptation to the corresponding specification profile. of the system assembly (10) or individual functional modules (11 to 13). Device for carrying out the method according to claim 1, with a control computer and at least one control circuit, characterized in that the individual functional modules (11 to 13) constituting a modular system to be adjusted take the form autarkic control circuits (14, 20, 11, 17, 21, 12, 18) subordinate to the control computer (25) for receiving setpoints (34 to 36). Device according to claim 4, characterized in that the control circuits (14, 20, 11, 17) are constructed in such a way that criteria specific to the module are taken into account.   60) Device according to claim 4 or 5, for the regulation of a modular system of transmission of forces, consisting of at least a driving machine and   at least one characteristic converter,   characterized in that the prime mover <40) or the driving machines, each for oneself, and the one or more characteristic converters (41) each for either, respectively with regulators (43 or 47>,   self-employed, which are associated with them, constitute   kill subordinate tuning circuits to the computer driver (53).   Device according to claim 6, characterized   rised in that, in the pilot computer (53), are memorized   the characteristics of the components resulting from the   type of memorization of the drive energy neces-   for the operation of the prime mover (40).