JPH1165619A - Signal processor and method for changing operation condition of the same and method for switching measuring equipment of the signal processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent failures due to the instantaneous switching of an operation condition or the like by multiplying output values, obtained by processing input signals under present and new operating conditions respective weighting factors to output the weighted mean, and gradually changing those weighted factors for changing these operating conditions at the time of the change transition of operating conditions. SOLUTION: A CPU 1 periodically processes input signals X1-X3 inputted to an input port 6 based on set conditions stored in an EEPROM 5, and outputs output valves Y1-Y3 which are the results from an output port 7. A rotary switch 11 weights a value obtained by multiplying the output value calculated under a set condition A by a weighting factor ka and a value obtained by multiplying the output value calculated under a set condition B by a weighting factor kb according to the positions, and outputs a value which is the weighted mean of both the values as the output value Y1. The weighting factor ka is gradually made small, and the weighting factor kb is gradually made large, so that the present operation condition can be changed to a new operation condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for changing operating conditions of a signal processing device operating based on preset operating conditions, and a method for switching measuring devices such as sensors when a system configuration is changed.

[0002]

2. Description of the Related Art In recent various process instrumentation systems,
From the sensors to the controller, intelligent instrumentation equipment equipped with a microprocessor has been used. These intelligent devices have a wealth of features that can be applied to a wide range of applications. Therefore, when an intelligent device is actually used, “setting” (configuration) of various parameters and programs for setting operating conditions suitable for the application is required.

For example, as shown in FIG. 11A, setting conditions (functions f1 and f2) set in a signal processing device that outputs output signals Y1 and Y2 in response to input signals X1 to X3.
And parameters P1 to Pn) may be changed to functions f1 'and f2' and parameters P1 'to Pn' as shown in FIG. FIG. 12 shows the setting conditions before and after the change.

When operating a signal processing device (including an intelligent device) under operating conditions suitable for the intended use, parameters and program setting conditions are input from a keyboard or the like serving as an operation unit of the device, or the parameters are set from another computer or the like. A collection of files was downloaded via a communication line.

As described above, the parameters and program setting conditions that define the operating conditions of the signal processing device can be easily changed only by changing the numerical values, so that the old setting conditions are instantaneously switched to the new setting conditions.

[0006]

However, since the setting condition for determining the operating condition is instantaneously changed during the operation of the signal processing device, the device is expected to be operated if there is a mistake in the set value in the changed new setting condition. It does not operate as expected, and in some cases can seriously affect plant operation.

Further, in a redundant system in which a plurality of sensors are installed on the same measurement target, the sensor may be switched to a standby sensor for maintenance of the sensor in use. If the device has a failure or the like, it will operate with a completely wrong measurement value. The same can be said when the system configuration is changed.

The present invention has been made in view of the above circumstances, and prevents a problem caused by instantaneously switching operating conditions of a signal processing device or a signal input target device.
A signal processing device capable of minimizing adverse effects on a plant when changing a setting condition of a signal processing device and, in some cases, immediately returning to an original setting condition or a signal input target device, and a method of changing an operation condition thereof. It is another object of the present invention to provide a method for switching a measuring device in a signal processing device.

[0009]

In order to achieve the above object, the present invention takes the following measures. The present invention relates to a method for changing an operating condition of a signal processing device that processes an input signal based on a specified operating condition and outputs an output value corresponding to the input signal, wherein a plurality of sets of operating conditions are selected for the signal processing device. The current operating condition is changed to the new operating condition, and the value obtained by multiplying the output value obtained by processing the input signal under the current operating condition by the weighting factor ka during the transition period is changed to the new operating condition. The weighted average value obtained by weighting the output value processed by the weighting coefficient kb and the value obtained by multiplying the weighted coefficient by the weighting coefficient is adopted as the output value, and the weighting coefficient ka is gradually reduced and the weighting coefficient kb is gradually increased. To change from the current operating condition to the new operating condition.

In the transition period when the current operating condition is changed to the new operating condition, the output value processed under the current operating condition and the output value processed under the new operating condition are weighted by ka, ka,
A weighted average value obtained by multiplying Kb and averaging both is adopted as an output value. Therefore, by controlling the weighting coefficients ka and Kb, the output value of the signal processing device smoothly shifts from the output value processed under the current operating condition to the output value processed under the new operating condition.

The present invention relates to a method for changing an operating condition of a signal processing device for processing an input signal based on a designated operating condition and outputting an output value corresponding to the input signal, wherein the operating condition is defined for the signal processing device. A plurality of sets of parameters are set so that they can be selectively used, and are changed during a transition period when the operation conditions are changed from an operation based on one set of parameters to an operation based on another set of parameters. A parameter value obtained by multiplying a preceding and succeeding parameter by a weighting coefficient and using a weighted average is used, and the weighting coefficient is changed so that each parameter is monotonously changed from a value before the change to a value after the change within a predetermined time.

[0012] By continuously changing the weighting coefficient, the parameter defining the operating condition smoothly changes from the parameter before the change to the parameter after the change, so that the parameter is instantaneously switched at a time. Is prevented.

The present invention relates to a method for changing operating conditions of a plurality of signal processing apparatuses connected by a communication network and operating under operating conditions determined for each control method under the same control method. In the transition period when the operating condition of each signal processing device is changed to the operating condition corresponding to the new control method, the same weighting coefficient information r is broadcasted to each of these signal processing devices via the communication network. An output value or a value obtained by multiplying a parameter defining the operating condition by a weighting coefficient (1-r) and a new operating condition with respect to an input value or an operation value of the input signal by the signal processing device. A weighted average value obtained by averaging a parameter defining a condition and a value obtained by multiplying the parameter by a weighting coefficient r is used as an output value or a parameter, and the communication network Close weighting coefficient information r to broadcast informs each signal processing unit over gradually 1.

When a plurality of signal processing devices connected by a communication network are operating under the same control method based on respective operating conditions, the operating conditions of each signal processing device are changed according to a change in the control method. When a change is required, the same weighting coefficient information r is broadcast to each signal processing device via the communication network. Therefore, the operating conditions can be smoothly changed in synchronization with all the signal processing devices.

The present invention relates to a measuring device switching method for switching a measuring device that outputs a measurement signal to be used as a measured value in a signal processing device connected to a plurality of measuring devices installed for the same measuring object. The weighted average of the value obtained by multiplying the measured value of the measuring device taking the measurement signal by the weighting factor ka and the value obtained by multiplying the measured value of the measuring device taking the measurement signal by the weighting factor kb by the weighting factor is given by It is adopted as a measured value, and the weighting coefficient ka is gradually reduced and the weighting coefficient kb is gradually increased to switch from the current measuring device to another measuring device.

When the signal processing device switches the measuring equipment to be input with the signal, the measured equipment is not switched at a time, but a weighted coefficient multiplied by the measured values of both is used in the transition period. Thus, switching can be performed smoothly.

[0017]

Embodiments of the present invention will be described below. (First Embodiment) FIG. 1 shows functional blocks of a signal processing device which is an intelligent device. CP
ROM1, RAM4, EE via bus 2 for U1
The PROM 5, input port 6, output port 7, operation / display interface 8, and communication interface 9 are connected. This signal processing device performs an arithmetic processing on input signals X1 to X3 input to an input port 6 based on setting conditions stored in an EEPROM 5 by a CPU 1, and outputs output signals Y1 to Y3 as processing results to an output port 7 Output from The EEPROM 5 stores the setting condition A in the internal storage area 5a.
Is stored, and the setting condition B is stored in another storage area 5b.

The rotary switch 11 can select 11 positions from a position 0 to a position 10.
Output value Y1a calculated under setting condition A and setting condition B
The output value Y1b calculated by the above is weighted by the position of the rotary switch 11, and a weighted average of the two is output as the output value Y1. The processing for obtaining another output Y2 is omitted here.

A setting condition is set in the storage area of the EEPROM 5 from the operation unit 12 connected to the operation / display interface 8. At this time, the operation guidance, the old setting condition, and the new setting condition are displayed on the display unit 13, and the display unit 1 is displayed to the operator.
While displaying the display contents of No. 3, input is performed manually. Further, setting conditions can be set in the storage area of the EEPROM 5 from an external device such as another personal computer through the communication interface 9.

Here, the setting conditions A and B for the storage areas 5a and 5b will be specifically described. The CPU 1 sets the setting condition A
Is designated, the expression (1) is obtained from the inputs X1 and X2.
The output Y1 is calculated by the following calculation.

Y1a = Pa · X1 + Pb · X2 (1) As setting conditions used at this time, the form of expression (1) is “addition”, (2) the coefficient applied to X1 is “Pa”, 3) The setting condition A such that the coefficient relating to X2 is “Pb” is stored in the storage area 5a.

When the setting condition B is instructed, the output Y1b is calculated from the inputs X1 and X2 by the calculation of the equation (2). Y1b = Pc.X1.X2 (2) As setting conditions to be used at this time, setting conditions B such that the form of equation (1) is "product" and (2) the coefficient is "Pc" are stored in the storage area. 5b.

The operation of the signal processing device configured as described above will be described. An operation program is stored in the ROM 3. The CPU 1 executes the operation program using the RAM 4 as a work area while referring to the setting conditions stored in the EEPROM 5. The device to be controlled is controlled by the CPU 1 executing the operation program. That is, processing based on the set conditions is periodically performed on the input signals X1 to X3 input to the input port 6, and an output value Y1 as a result is output from the output port 7.

The case where the output value Y1 is output for the input signals X1 and X2 will be specifically described with reference to the flowchart of FIG. The input signals X1 and X2 are read every processing cycle, the setting condition A and the setting condition B are taken out from the EEPROM 5, and the output signal Y is obtained based on the setting condition A by the equation (1).
1a is calculated, and the output signal Y1b is calculated based on the setting condition B by the equation (2).

At this time, the position number n of the rotary switch 11 is read, and the output signal Y1 is obtained by the equation (3).
Weighted average Y1 according to position number n between a and Y1b
Is calculated. Y1 = (1−r) · Y1a + r · Y1b (3) where r is the position number n of the rotary switch 11
Is divided by the numerical value 10. The weighted average Y1 calculated in this way is output from the output port 7.

If the position of the rotary switch 11 is position number n = 0, the output value Y1 = Y1a, and the signal processing device operates based on the setting condition A. If the position of the rotary switch 11 is position number n = 10, the output value Y1 = Y1
b, the signal processing device operates based on the setting condition B.

If the position of the rotary switch 11 is any position between 0 and 10, an intermediate operation between the operation based on the setting condition A and the operation based on the setting condition B is performed. Therefore, by the operator gradually switching the rotary switch 11 from the position number n = 0 to the position number n = 10,
A smooth transition from the setting condition A to the setting condition B becomes possible.

FIG. 3A shows that the specific gravity of the output values Y1a and Y1b calculated from the both setting conditions for the output value Y1 is gradually shifted from the setting condition A to the setting condition B using the rotary switch 11 in the setting condition. The state of the output value Y1 in the case is shown. The output value Y1 smoothly transitions from the level under the setting condition A to the level under the setting condition B.

As described above, by gradually changing the specific gravity of the calculated output value with respect to the output value Y1 in both of the setting conditions, if there is a mistake in the setting value in the new setting condition B, the operation before completely operating under the setting condition B is completed. Of the operation can be detected in the middle of the transition to the condition A.
By returning to the side, it is possible to immediately return to the original setting condition A with a track record.

On the other hand, FIG. 3B shows the state of the output value Y1 when the set condition is instantaneously shifted from the set condition A to the set condition B without using the rotary switch 11.
The output value Y1 changes instantaneously from the output value calculated under the setting condition A to the output value calculated under the setting condition B. If there is a mistake in the set value in the new set condition B, an abnormality occurs only after operating under the set condition B with the set value error, so that the effect on the plant is greater than in the case of FIG.

For example, in a case where the apparatus is a PID control controller and the plant is in a dangerous state in the operation based on the set condition B, according to the present embodiment, the position of the rotary switch 11 is in the middle (for example, r =
At about 0.3), a dangerous state can be detected, and preventive measures can be taken.

(Second Embodiment) In a signal processing device which operates based on setting conditions including parameters, a parameter obtained by weighting and averaging both parameters is used in a transition period when a current parameter is changed to a new parameter. This prevents problems caused by instantaneous parameter changes.

An example of a PID controller which performs a PID operation on an input signal to obtain an output value Y will be described. The system configuration of the PID controller is the same as the signal processing device shown in FIG.

FIG. 4 shows a flowchart for changing the current parameter to a new parameter. As shown in FIG. 5, the function form (PID) remains unchanged and PI
Current parameters Paa, Iaa, D used for D operation
aa is changed to new parameters Pbb, Ibb, Dbb.

The operator operates the rotary switch 11 at the position of the position number = 0 at the time of the current parameter to move the rotary switch 11 to the position of the position number = 10.
The CPU 1 reads the input signal when a predetermined time has elapsed from the previous processing, and reads the position number n of the rotary switch 11. The parameters Paa and Ia before and after the change based on the position number n of the rotary switch 11
a, Daa and Pbb, Ibb, Dbb are weighted in accordance with the position number n, and a weighted average value is obtained for each parameter. An output value Y is obtained by executing a PID operation using the weighted average value of each parameter obtained in this way.

Therefore, the operator sets the rotary switch 11 from position number = 0 to position number = 1.
The parameter used in the PID calculation is smoothly changed from Paa, Iaa, and Daa to Pbb, Ibb, and Dbb by changing the position to 0 in an analog manner.

According to such an embodiment, a parameter obtained by weighting and averaging both parameters is used in a transition period when the current parameter is changed to a new parameter. And can easily change to the original parameters.

(Third Embodiment) The operating conditions of each signal processing device are changed while synchronizing a plurality of signal processing devices connected on a network. The operating condition changing method is performed while taking a weighted average of output values or parameters, as in the first or second embodiment.

As shown in FIG. 6, a plurality of controllers 2
There is a control system in which 1 to 23 control the same control target process in cooperation with each other under the same control method. A management station 25 for managing the operation of the controllers is connected via a communication network 24 to which the controllers 21 to 23 are connected. The controllers 21 to 23
Setting conditions are stored for multiple control methods,
When the management station 25 instructs the control methods to the controllers 21 to 23, each controller operates under the setting conditions corresponding to the same control method. FIG. 7 shows the setting conditions 21A-23 set in the controllers 21-23.
A, 21B to 23B show the correspondence between the control methods.

In the first or second embodiment, the weighting is instructed by the rotary switch 11 in the signal processing device (including the controller). In this embodiment, however, the management station 25 sends all the weights to the controllers 21 to 23. On the other hand, the same weight information is transmitted in a broadcast manner. The rotary switch 11 is installed in the management station 25, and the operator gives the same weighting information to the controllers 21 to 23 from the rotary switch 11 in the management station 25.

The controllers 21 to 23 take in weighting information from the communication interface 9 via the communication network 24 instead of reading the position number n from the operation / display interface 8 of each controller, and smoothly shift the setting conditions. The weighted average calculation described above is performed.

According to such an embodiment, when a plurality of controllers operating in cooperation under the same control method change the setting condition of each controller, the output value or the weighting coefficient for the parameter is changed between the controllers. And can be changed synchronously, and the control method can be changed smoothly.

(Fourth Embodiment) FIG. 8 shows functional blocks of a signal processing device according to a fourth embodiment.
In this embodiment, instead of the rotary switch 11 that indicates a weighting coefficient for an output value or a parameter,
This is an example in which the operation condition changeover switch 14 for simply instructing the switching of the operation condition is used. The setting conditions used for the arithmetic processing are designated to the CPU 1 by the state of the operation condition changeover switch 14 connected to the operation / display interface 8. When the terminal A is selected by the operation condition changeover switch 14, the setting condition (setting condition A) in the storage area 5a is selected. When the terminal B is selected, the setting condition (setting condition) in the storage area 5b is selected. Select the setting condition B).

FIG. 9 shows a flowchart for switching the operating conditions. Input signals X1 and X2 for each processing cycle
Is read, and each time the setting condition to be used is switched according to the state of the operating condition switch 14. For example, if the operating condition changeover switch 14 selects the terminal A, EE
Using the setting condition A stored in the storage area 5a of the PROM 5, the input signals X1 and X2 are arithmetically processed based on the above equation (1). Output value Y calculated by this calculation process
Outputs 1.

When switching from the current setting condition A to the setting condition B, the operating condition switch 14 is switched from the terminal A to the terminal B. The operation based on the new setting condition B is performed from the next switching processing cycle. If the operation condition changeover switch 14 selects the terminal B when the input signals X1 and X2 are read, the input is performed based on the above equation (2) using the setting condition B stored in the storage area 5b of the EEPROM 5. The signals X1 and X2 are processed. The output value Y1 calculated by this calculation process is output.

In some cases, the newly selected setting condition B has an inappropriate value, and the output value may not be as expected. In this case, the operator sets the operating condition changeover switch 14 to the terminal B
To the terminal A, the operation condition can be immediately returned to the original one.

As described above, according to this embodiment, the currently used setting condition and another new setting condition are resident in the EEPROM 5 for storing the setting condition, and the setting condition is instructed to the CPU 1. Since the operation condition changeover switch 14 directly operated by the operator is used, it is possible to immediately return to the original setting condition that has been established even after switching to the new setting condition, and to operate the plant under inappropriate operating conditions. The adverse effects of the above can be minimized.

(Fifth Embodiment) In FIG. 7, two pressure sensors A and B are installed on the same object to be measured, and the outputs of the pressure sensors A and B are connected to a monitoring device C. Thus, a monitoring system for monitoring the pressure with the monitoring device C is shown.

In this monitoring system, the pressure sensor A
The weighted average is calculated by the equation (4) with respect to the input of the pressure measurement value Pa and the pressure measurement value Pb of the pressure sensor B. P = ka · Pa + kb · Pb (4) where 0 ≦ ka, kb ≦ 1 ka + kb = 1 Then, the measured value P calculated by weighing and averaging the measured values of the pressure sensors A and B is measured for pressure monitoring. Adopt as a value. By allowing the weighting coefficients ka and kb to be continuously changed from 0 to 1 according to an instruction from the operator, it is possible to switch from the pressure sensor A to the pressure sensor B or vice versa.

For example, when monitoring is performed using only the measured value of the pressure sensor A and the pressure sensor A fails to obtain a normal measured value, the weighting coefficient ka is changed from 1 to 0.
To the weighting coefficient kb at the same time
If the pressure is continuously changed from “1” to “1”, it is possible to smoothly shift to a normal output value of the pressure sensor B.

According to such an embodiment, in a system in which sensors A and B are provided redundantly for a certain measurement object and the sensors are switched, the sensors which are switched when switching the sensors have failed. Even in this case, since the sensor output is gradually changed by the weighting coefficient, the influence on the control target can be reduced.

Also, when the system configuration for exchanging measuring instruments is changed even if the system is not a redundant system, a weighted average of the output values of the measuring instruments currently in use and the output values of the measuring instruments to be used from now on is used. By gradually increasing the weight of the output value of the measuring device to be used from now on, the measuring device can be switched while minimizing the influence on the plant and the like.

In the above description, the weighting coefficient is indicated by the rotary switch 11, but the present invention is not limited to the rotary type, but can be realized by other means. The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0054]

As described above in detail, according to the present invention, it is possible to prevent malfunctions caused by instantaneously switching the operating conditions of the signal processing device or the signal input target device, and to change the setting conditions of the signal processing device. In this case, adverse effects on the plant can be minimized, and in some cases, the original setting conditions or the signal input target device can be immediately returned.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a signal processing device according to a first embodiment.

FIG. 2 is a flowchart illustrating a weighted average process of output values according to the first embodiment.

FIG. 3 is a diagram illustrating a variation state of each output value when weighted averaging of output values according to a plurality of setting conditions and when weighted averaging is not performed;

FIG. 4 is a flowchart for weighted averaging of parameters before and after a change according to the second embodiment.

FIG. 5 is a diagram illustrating setting conditions before and after parameter change in a second embodiment.

FIG. 6 is a diagram illustrating a system configuration according to a third embodiment;

FIG. 7 is a diagram showing setting conditions before and after a control method change in a third embodiment.

FIG. 8 is a functional block diagram of a signal processing device according to a fourth embodiment.

FIG. 9 is a flowchart illustrating output value switching processing according to a fourth embodiment.

FIG. 10 is a system configuration diagram of a fifth embodiment.

FIG. 11 is a conceptual diagram of a signal processing device in which setting conditions are changed.

12 is a diagram showing setting conditions before and after the change in the signal processing device shown in FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... CPU 2 ... Bus 3 ... ROM 4 ... RAM 5 ... EEPROM 6 ... Input port 7 ... Output port 8 ... Operation / display interface 9 ... Communication interface 11 ... Rotary switch 12 ... Operation part 21-23 ... Controller 24 ... Communication network 25 ... Management station

Claims (6)

[Claims] 1. A method for changing an operating condition of a signal processing device for processing an input signal based on a designated operating condition and outputting an output value corresponding to the input signal, comprising: Set to be selectively used and change from the current operating condition to a new operating condition. In a transitional period, a value obtained by multiplying the output value obtained by processing the input signal under the current operating condition by a weighting coefficient ka and a new operation. A weighted average obtained by weighting the output value processed under the condition and the value obtained by multiplying the weighting coefficient kb by the weighting coefficient is adopted as the output value, and the weighting coefficient ka is gradually reduced and the weighting coefficient kb is gradually increased. And changing the current operating condition to a new operating condition. 2. A method for changing an operating condition of a signal processing device for processing an input signal based on a designated operating condition and outputting an output value corresponding to the input signal, wherein a plurality of operating conditions are defined for the signal processing device. A set of parameter groups is set so that it can be used selectively, and during a transition period in which the operation condition is changed from an operation based on one set of parameter groups to an operation based on another set of parameter groups, before and after the change. Using a parameter value obtained by multiplying a parameter by a weighting factor and using a weighted average, changing the weighting factor and controlling each parameter to monotonically change from a value before change to a value after change within a certain time A method for changing operating conditions of a signal processing device. 3. A method for changing operating conditions of a plurality of signal processing apparatuses connected by a communication network and operating under operating conditions determined for each control method under the same control method, wherein each signal is changed according to a change in the control method. In the transition period when the operating condition of the processing device is changed to the operating condition corresponding to the new control method, the same weighting coefficient information r is broadcasted to each of these signal processing devices via a communication network, and each signal processing device is notified. An output value obtained by processing the input signal with the current operating condition or a value obtained by multiplying a parameter defining the operating condition by a weighting coefficient (1-r) with an output value processed by the new operating condition or the operating condition is obtained. A weighted average value obtained by averaging a defined parameter and a value obtained by multiplying the weighting coefficient r by the weighting coefficient is adopted as an output value or a parameter, and Operating condition change method of a signal processing apparatus characterized by bringing the weighting coefficient information r which broadcasts notifies the signal processing device gradually 1. 4. A measuring device switching method for switching a measuring device that outputs a measuring signal to be used as a measured value in a signal processing device to which a plurality of measuring devices installed for the same measuring object are connected. The weighted average of the value obtained by multiplying the measurement value of the measuring device that has taken the measurement value by the weighting coefficient ka and the value obtained by multiplying the measurement value of the measurement device that takes the measurement signal by the weighting coefficient kb by the weighting coefficient is the measurement value. Wherein the weighting coefficient ka is gradually reduced and the weighting coefficient kb is gradually increased to switch from the current measuring device to another measuring device. 5. A signal processing apparatus for processing an input signal based on a specified operating condition and outputting an output value corresponding to the input signal, a storage unit storing a plurality of sets of operating conditions, and specifying the operating condition. Operating condition designating means, weighting designating means for continuously changing a weighting coefficient instructing weighting of a current operating condition and a new operating condition, and a current operating condition when a new operating condition is designated by the operating condition designating means. The output value processed under the operating condition or the value obtained by multiplying the parameter defining the operating condition by the weighting coefficient ka specified by the weighting designating means is used as the output value processed under the new operating condition or the parameter defining the operating condition. Means for calculating a weighted average value obtained by averaging a value multiplied by the weighting coefficient kb designated by the weight designation means. Signal processing apparatus according to symptoms. 6. A control system in which a plurality of signal processing devices operating based on operating conditions are connected via a communication network and each signal processing device is operated under operating conditions corresponding to the control system. Means for continuously changing the weighting factor information r for the current operating condition and the new operating condition when changing the operating condition of each signal processing device to the operating condition corresponding to the new control method, and the weighting factor information means for notifying r to each signal processing device via the communication network, a storage unit provided in each signal processing device and storing a plurality of sets of operating conditions, and an input signal provided in each signal processing device. With respect to the output value processed under the current operating condition or a value obtained by multiplying the parameter defining the operating condition by the weighting coefficient (1-r) and the new operating condition. Control system characterized by comprising a means for calculating a weighted average value obtained by averaging the weighting factor and the value obtained by multiplying the weighting coefficient r to parameters defining the output value or said operating condition was.