JP2019159403A - Temperature controller - Google Patents

Abstract

To provide a temperature controller capable of predicting a parameter indicating a predicted control result.SOLUTION: There is provided a temperature controller (110) including: an input unit (130) which receives a temperature measurement value of a control object (150); a control unit (180) which calculates an operation quantity to a heating device (170) according to a temperature control calculation based on the measurement value; a prediction unit (190) which predicts a parameter indicating a predicted control result in executing control of the control object (150) under a condition different from a condition of actually executed control on the basis of time series data of a measurement value and operation quantity obtained under a condition where the control is actually executed by the control unit (180) so as to control the temperature of the control object (150) to be a prescribed target temperature; and an output unit (140) which outputs the parameter predicted by the prediction unit (190).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a temperature controller.

  As for temperature control simulation, a software program that can be predicted by a simulation tool operating on a personal computer is known as a conventional technique.

OMRON Corporation, Thermac Simulator Operation Manual, First Edition, p. 3-24, July 2014

  If the heater is selected incorrectly when constructing the temperature control system, the temperature of the control target may not reach the target value or may be hunted. One of the indexes for selecting a heater is a heater capacity. However, if the heater is not incorporated into an actual temperature control system, the heater ability exhibited by the heater cannot be properly evaluated.

  In addition, even if the heater is actually incorporated into the temperature control system, it is necessary to test how many times the temperature of the control target can actually be raised with that temperature control system. May be damaged.

  For example, in a temperature control system in which a heater with a specification that the maximum temperature, that is, the operation amount of 100% is 200 ° C. is mounted, when designing a design with a margin of 50%, select a heater that is twice the current heater capacity. This can be achieved. By using a heater with a margin, the life of the heater is extended, contributing to the stability of the temperature at the target temperature. Thus, it is very beneficial to be able to simulate how many heaters of the current heater capacity are required in the design for incorporating the heater into the temperature control system.

  On the other hand, temperature control can be simulated by a simulation tool operating on a personal computer (PC). However, depending on the site where the temperature control system is installed, there are some sites where it is not possible to bring in a PC due to security reasons. In many cases, a solution using a simulation program that requires the use of a PC is not suitable.

  Further, such a simulation has a problem that modeling related to an index indicating the heater capability is required in advance, and the modeling does not always apply to all heaters.

  An object of one aspect of the present invention is to predict a parameter indicating a prediction control result in a case where control is executed under a condition different from the current state by a temperature controller alone, without using a simulation program by a PC.

In order to solve the above problem, the temperature controller 110 according to one embodiment of the present invention includes:
An input unit 130 that receives a measured value (PV) of the temperature of the control object 150;
A control unit 180 that calculates an operation amount (MV) for the heating device (heater 170) by a temperature control calculation based on the measurement value (PV);
In the time series data of the measured value (PV) and the manipulated variable (MV) obtained under the condition when the control is actually performed by the control unit 180 so that the controlled object 150 is set to a predetermined target temperature. A prediction unit 190 that predicts a parameter indicating a prediction control result when the control of the control object 150 is executed under a condition different from the condition of the control that is actually executed,
And an output unit 140 that outputs the parameter predicted by the prediction unit 190.

  According to said aspect, the parameter which shows the prediction control result at the time of assuming that control was performed on conditions different from the present condition can be estimated by a prediction part.

The prediction unit 190 of the temperature controller 110 according to an aspect of the present invention further includes:
A settling temperature (SP0), a settling operation amount (MV0), and a settling arrival time (t0) are calculated from the time series data,
The parameter is predicted with reference to at least two pieces of information of the settling temperature (SP0), the settling operation amount (MV0), and the settling arrival time (t0).

  According to said aspect, the basic information for calculating | requiring the parameter which shows the said prediction control result is computable.

The prediction unit 190 of the temperature controller 110 according to an aspect of the present invention further includes:
The maximum manipulated variable (MVmax) is calculated from the time series data,
If the maximum manipulated variable (MVmax) is 100%, the time when the settling temperature (SP0) is reached is settling arrival time (t0),
If the maximum manipulated variable (MVmax) is less than 100%, the product of the temperature and the maximum manipulated variable (MVmax) at the time when the rate of temperature rise is maximized in the temperature increasing process leading to the settling temperature (SP0). The value divided by the maximum rate of temperature increase is calculated as the settling arrival time (t0).

  According to said aspect, the value of settling arrival time (t0) is computable according to the magnitude | size of the largest operation amount (MVmax).

  Predicted settling temperature and predicted settling arrival time when the parameter predicted by the temperature controller 110 according to one aspect of the present invention executes control of the control target 150 under conditions different from the conditions of the control actually executed. It is characterized by being.

  The predicted settling temperature includes a predicted maximum temperature (SPmax) and a predicted arrival temperature (SP1), and the predicted settling arrival time includes a predicted arrival time (tmax) and a design predicted arrival time (t1).

  According to the above aspect, the predicted settling temperature and the predicted settling arrival time can be calculated by the prediction unit 190 based on the calculated basic information.

The parameter predicted by the temperature controller 110 according to one aspect of the present invention includes at least a predicted maximum temperature (SPmax) and a predicted arrival time (tmax),
The prediction unit 190
The predicted maximum temperature (SPmax) is calculated by dividing the settling temperature (SP0) by the settling manipulated variable (MV0);
The predicted arrival time (tmax) is calculated by dividing the product of the settling arrival time (t0) and the predicted maximum temperature (SPmax) by the settling temperature (SP0).

  According to the above aspect, based on the calculated basic information, the prediction unit 190 can calculate the predicted maximum temperature (SPmax) and the predicted arrival time (tmax).

The parameters predicted by the temperature regulator 110 according to one aspect of the present invention include at least a predicted arrival temperature (SP1) and a design prediction arrival time (t1) at the time of a design settling operation amount,
The prediction unit 190
The predicted arrival temperature (SP1) is obtained by multiplying the settling operation amount (MV0) by the product of the design settling operation amount (MV1) input from the user to the input unit 130 via the input device 135 and the settling temperature (SP0). )
The design predicted arrival time (t1) is calculated by dividing the product of the settling arrival time (t0) and the predicted arrival temperature (SP1) by the settling temperature (SP0).

  According to the above aspect, based on the calculated basic information, the prediction unit 190 can calculate the predicted arrival temperature (SP1) and the design prediction arrival time (t1) at the time of the design settling operation amount.

The parameter predicted by the temperature controller 110 according to one aspect of the present invention includes a heater capacity factor (n),
The prediction unit 190
A value obtained by dividing the settling arrival time (t0) by the design arrival time (t2) input from the user to the input unit 130 via the input device 135;
The heater capacity magnification (n) is calculated by multiplying the design ultimate temperature (SP2) input from the user via the input device 135 to the input unit 130 by the value obtained by dividing by the settling temperature (SP0). It is characterized by that.

  According to the above aspect, the heater capacity magnification (n) can be calculated by the prediction unit 190 based on the calculated basic information.

In order to solve the above problem, a method according to one embodiment of the present invention includes:
In the temperature controller 110 including the input unit 130, the control unit 180, the prediction unit 190, and the output unit 140,
The input unit 130 receives a measured value (PV) of the temperature of the controlled object 150,
The control unit 180 calculates an operation amount (MV) for the heating device (heater 170) by a temperature control calculation based on the measurement value (PV),
The prediction unit 190 uses the measurement value (PV) and the operation amount (MV) obtained under the conditions when the control unit 180 actually performs control so that the control target 150 is set to a predetermined target temperature. ) Based on time-series data, predicting a parameter indicating a prediction control result when the control of the control target 150 is executed under a condition different from the condition of the control actually executed,
The output unit 140 outputs the parameters predicted by the prediction unit 190.

  According to said aspect, the parameter which shows the prediction control result at the time of assuming that control was performed on conditions different from the present condition can be estimated by a prediction part.

  According to one aspect of the present invention, the temperature controller 110 can predict a parameter indicating a prediction control result when control is executed under conditions different from the current state.

It is the schematic of the temperature control system using the temperature regulator of this invention. It is the schematic of the time change graph of the temperature and the operation amount in the temperature control using the temperature controller of the present invention. It is a flowchart of the data measurement regarding the heater connected to the temperature controller of this invention. It is a flowchart which calculates the parameter concerning Embodiment 1 of this invention. It is a flowchart which calculates the parameter concerning Embodiment 2 of this invention. It is a flowchart which calculates the parameter concerning Embodiment 3 of this invention. It is the schematic of the example of a basic screen structure of the temperature controller of this invention. It is an example of a screen display in case a control object is a settling state by the temperature controller of this invention. It is the example of a screen display which outputted the parameter concerning Embodiment 1 of the present invention. It is the example of a screen display which output the parameter concerning Embodiment 2 of the present invention. It is the example of a screen display which outputted the parameter concerning Embodiment 3 of the present invention.

  Hereinafter, an embodiment according to an aspect of the present invention (hereinafter, also referred to as “this embodiment”) will be described with reference to the drawings. However, this embodiment described below is only an illustration of the present invention in all respects. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention. That is, in implementing the present invention, a specific configuration according to the embodiment may be adopted as appropriate. Although data appearing in this embodiment is described in a natural language, more specifically, it is specified by a pseudo language, a command, a parameter, a machine language, or the like that can be recognized by a computer.

§1 Application Example First, an example of a scene to which the present invention is applied will be described with reference to FIG.
FIG. 1 is a schematic view illustrating the configuration of a temperature control system 100 using the temperature regulator according to the present embodiment. FIG. 1 illustrates a configuration in which the temperature of the controlled object 150 is controlled by the temperature regulator 110. The control target 150 includes a heater 170 as an example of a heating device for heating the control target, and a temperature sensor 160 that measures the temperature of the control target.

  The temperature controller 110 includes an input unit 130, a calculation unit 120, and an output unit 140. The calculation unit 120 includes a control unit 180 that performs a control calculation and a prediction unit 190 that performs a prediction calculation. The control unit 180 controls and calculates the temperature of the control target 150. The input unit 130 receives temperature information (PV) from the temperature sensor 160 in real time, and the output unit 140 outputs an operation amount (MV) to the heater 170. Based on the temperature information (PV) received via the input unit 130, the control unit 180 calculates an operation amount (MV) for the heater 170 by temperature control calculation, and controls the heater 170 by the operation amount.

  The data which shows the heater capability which the heater 170 can exhibit with respect to the control object 150 in the said structure is acquired. The data is information serving as a basis for calculating the heater capacity that can be exerted on the controlled object 150 when the control is performed under a condition different from the condition that is actually controlled by the above configuration. Specifically, time-series data of measured values (PV) and manipulated variables (MV) obtained under conditions when control is actually executed by the control unit 180 so that the control target 150 is set to a predetermined target temperature. To get. Based on the acquired time series data, a parameter indicating a prediction control result when the control of the controlled object 150 is executed under a condition different from the condition of the actually executed control indicated by the time series data Predict at 190.

§2 Configuration example [Embodiment 1]
Hereinafter, an embodiment of the present invention will be described in detail.
[Configuration of Temperature Control System 100]
Next, an example of the configuration of the temperature control system 100 will be described with reference to FIG. The temperature sensor 160 incorporated in the controlled object 150 is preferably composed of a thermocouple or a resistance temperature detector. In the preferred embodiment, the controller 180 of the temperature controller 110 is controlled by loop control using PID control. The control of the control unit 180 is not limited to PID control, and can be implemented in other control modes such as On-Off control and control by a fixed operation amount.

  The input unit 130 further includes an input device 135, and the output unit 140 further includes a display device 145. The input device 135 is an interface through which a user can input predetermined information, and the display device 145 is an interface through which predetermined information can be displayed to the user. In a preferred embodiment, a touch panel display device capable of input operation can serve as both the input device 135 and the display device 145. In a preferred embodiment of the temperature control system 100, the user can input a target temperature to be controlled for the control target 150 via the input device 135. The controller 180 calculates the operation amount so as to reach the input target temperature, and heats the heater 170. The input unit 130 can receive temperature information from the temperature sensor 160 in time series via the input unit 130 and display the temperature of the control target 150 on the display device 145 in real time. Since the temperature information is received in time series, not only the temperature information of the control target 150 is displayed on the display device 145 in real time but also the maximum temperature and the minimum temperature of the control target can be displayed, for example. In another preferred embodiment, the display device can be connected as an external device of the temperature controller, and predetermined output information can be output to the outside via the output unit 140.

[Relationship between temperature information (PV) change and manipulated variable (MV) change]
FIG. 2 is a schematic diagram showing a relationship between temperature information (PV) change and manipulated variable (MV) change with respect to time. FIG. 2A is an example of a graph representing a change over time of the temperature information (PV) received from the temperature sensor 160. A target temperature input by the user via the input device 135 is shown as a settling temperature (SP0). A constant temperature range above and below the settling temperature (SP0) is referred to as a settling width. In a preferred embodiment, the settling width is set to a settling temperature (SP0) ± 1 ° C. or more. The slope in the graph of FIG. 2A represents the temperature increase rate.

  FIG. 2B is an example of a graph representing a change over time in the operation amount (MV) output from the output unit 140 to the heater 170. It can be confirmed that the maximum manipulated variable (100%) is output from the beginning toward the target temperature. In PID control, in order to avoid an overshoot that greatly exceeds the settling temperature (SP0), the operation amount decreases near the lower limit of the settling width. The time at which the temperature reaches the settling temperature (SP0), preferably the lower limit temperature of the settling width is referred to as settling arrival time (t0). The manipulated variable when the rate of temperature rise (tilt) is maximum (R) is referred to as the maximum manipulated variable (MVmax). In the example of FIG. 2, the maximum manipulated variable (MVmax) at the time of the maximum temperature increase rate (R) is 100%. An operation amount when the temperature settles within a predetermined settling width related to the settling temperature (SP0) is referred to as a settling operation amount (MV0).

[Obtain required data]
The parameter which shows the heater capability which the heater 170 can exhibit with respect to the control object 150 in the said structure is calculated. The parameter is information that serves as a basis for calculating the heater capacity that can be exerted on the controlled object 150 when the control is performed under a condition different from the condition that is actually controlled by the above configuration. Specifically, time-series data of measured values (PV) and manipulated variables (MV) obtained under conditions when control is actually executed by the control unit 180 so that the control target 150 is set to a predetermined target temperature. To get. Based on the acquired time series data, a parameter indicating a prediction control result when the control of the controlled object 150 is executed under a condition different from the condition of the actually executed control indicated by the time series data Predict at 190.

  As described above, it is necessary to obtain necessary data in advance in the temperature control system 100 as a premise for obtaining the parameters.

  FIG. 3 shows a data acquisition flow 300 in the case of temperature control by PID control. The user inputs a target temperature via the input device 135, and starts temperature control of the temperature control system 100 by PID control (S310). When the temperature change as shown in FIG. 2 is obtained, the calculation unit 120 obtains the settling temperature (SP0), the settling arrival time (t0), the maximum temperature rising rate (R) from FIG. To get. In a preferred embodiment, the prediction unit 190 of the calculation unit 120 acquires a settling temperature (SP0), a settling arrival time (t0), and a maximum temperature increase rate (R). The maximum rate of temperature increase (R) can be obtained by calculating the value at which the slope is maximized in the graph of FIG. Next, a setting operation amount (MV0) and a maximum operation amount (MVmax) are calculated from FIG. 2B (S320).

  The maximum manipulated variable (MVmax) is the manipulated variable when the rate of temperature increase becomes maximum, and is 100% in the case of FIG. However, there may be cases where the maximum manipulated variable (MVmax) does not reach 100% depending on the control target and the environment of the temperature control system. Therefore, it is determined whether or not the maximum operation amount (MVmax) is 100% (S330). When the maximum operation amount (MVmax) is 100% (S330-Yes), the time when the lower limit temperature of the settling width is reached is set as the settling arrival time (t0) as shown in the graph of FIG. On the other hand, when the maximum operation amount (MVmax) does not become 100% (S330-No), the maximum temperature increase rate (R) is divided by the maximum operation amount (MVmax) to thereby increase the current temperature increase rate (R0). Is calculated. The settling arrival time (t0) is calculated by dividing the temperature (SP) at the point of time when the temperature increase rate becomes maximum by the calculated temperature increase rate (R0) (S340). The settling arrival time (t0), the settling temperature (SP0), and the settling operation amount (MV0) thus obtained are output as basic information (S350), and parameters to be described later are calculated.

[Output of acquired data]
FIG. 7 shows a basic configuration example 700 of the input device 135 of the temperature controller 110 and the display panel 710 of the display device 145. In a preferred embodiment, at least three items 720, 730, 740 and respective item values 725, 735, 745 can be displayed. It is preferable to provide up and down buttons 750 and 760 that can change items and values. Furthermore, it is preferable to include a parameter calculation button 770 and a display switching button 780. For example, when it is desired to input the target temperature, the user can input a desired temperature while the item is the target temperature. In a preferred input mode, a desired temperature can be set with the up and down buttons 750 and 760.

  In a preferred embodiment, the parameter calculation button 770 can be invalidated without proceeding to the output step (S350) until the controlled object 150 is in a settling state by PID control. Specifically, the parameter calculation button 770 can be turned off so that it does not react even when pressed. When the control target 150 is in a settling state, an output flag is set by the prediction calculation by the prediction unit 190 and the parameter calculation button 770 becomes valid when the output step (S350) is ready. Specifically, the parameter calculation button 770 can be turned on to inform the user that the output step (S350) is ready.

[Display of settling status by PID control]
FIG. 8 shows an example (800) displaying the result of the controlled object 150 being in a settling state by the PID control executed in the flow of FIG. In a preferred embodiment, the settling arrival time (t0), the settling temperature (SP0), and the settling operation amount (MV0) can be output by pressing the lit parameter calculation button 770 (S350). Specifically, the settling temperature (SP0) is displayed in item 1 (820), the settling operation amount (MV0) is displayed in item 2 (830), and the settling arrival time (t0) is displayed in item 3 (840). The specific values of the respective items can be displayed as “100 ° C.” (825), “20%” (835), “30 seconds” (845) (S350).

[Calculation of predicted maximum temperature and estimated arrival time]
This can be achieved when the heater 170 controls the control target 150 under the current temperature control system configuration under a condition different from the condition under which the control is actually performed when the time series data is acquired in FIG. A parameter indicating the heater capacity that can be calculated is calculated by the prediction unit 190 based on the calculated information. In a preferred embodiment, the prediction unit 190 uses, as parameters, a predicted settling temperature when the control of the controlled object 150 is executed under a condition different from the condition under which the actual control shown in the time series data shown in FIG. Calculate the predicted settling time. The predicted settling temperature of the calculated parameter includes the predicted maximum temperature (SPmax) and the predicted arrival temperature (SP1). The predicted settling arrival time of the parameter includes the predicted arrival time (tmax) and the design predicted arrival time (t1).

  FIG. 4 shows an example (400) of a flowchart for calculating the predicted maximum temperature and the predicted arrival time. First, it is confirmed whether information necessary for calculation is determined (S410). If not determined (S410-No), steps S310 to S350 in FIG. 3 are performed again (S420). If the information necessary for the calculation has been determined (S410-Yes), the determination flag is confirmed (S430). Specifically, the parameter calculation button 770 can be turned on to notify the user that the preparation for the output step is complete (S430). By pressing the lit parameter calculation button 770, the user can cause the prediction unit 190 to calculate the predicted maximum temperature and the predicted arrival time.

In a preferred embodiment, the prediction unit 190 calculates a predicted maximum temperature (SPmax) and a predicted arrival time (tmax). In the preferred embodiment, the maximum temperature is predicted at the maximum operation amount of 100% as shown in FIG. 2, and specifically, the predicted maximum temperature (SPmax) can be obtained by the following equation (S440);
Predicted maximum temperature (SPmax) = Settling temperature (SP0)
× 100% / setting operation amount (MV0).

The predicted arrival time (tmax) can be obtained by the following formula (S440);
Estimated arrival time (tmax) = Settling arrival time (t0)
X Predicted maximum temperature (SPmax) / Settling temperature (SP0).

  The predicted maximum temperature (SPmax) and predicted arrival time (tmax) thus obtained are output as parameters (S450).

[Display of predicted maximum temperature and estimated arrival time]
FIG. 9 shows an example (900) of displaying the parameter output results executed in the flow 400 of FIG. In a preferred embodiment, the predicted maximum temperature (SPmax) and the predicted arrival time (tmax) can be calculated (S440) by pressing the lit parameter calculation button 770 (S430). Specifically, the predicted maximum temperature (SPmax) is displayed in item 1 (920), and the predicted arrival time (tmax) is displayed in item 3 (940). The specific value of each item can be displayed as “500 ° C.” (925) and “150 seconds” (945) (S450). In the case shown in FIG. 2, since the maximum operation amount is 100%, in the preferred embodiment, the maximum operation amount (MVmax) is displayed in item 2 (930), and “100%” (935) is displayed as a specific value. can do.

[Embodiment 2]
Another embodiment of the present invention will be described below. For convenience of explanation, members having the same functions as those described in the above embodiment are given the same reference numerals, and the description thereof will not be repeated.

[Calculation of predicted temperature and design predicted time for design settling operation amount]
Based on the calculated information (S350), a parameter indicating the heater capability that the heater 170 can exert on the controlled object 150 in the current temperature control system configuration is calculated. In a preferred embodiment, a predicted arrival temperature and a design predicted arrival time at the time of a design settling operation amount are calculated as parameters.

  FIG. 5 shows an example (500) of a flowchart for calculating the predicted arrival temperature and the design predicted arrival time at the time of the design settling operation amount. First, it is confirmed whether information necessary for calculation is determined (S510). If not determined (S510-No), Steps S310 to S350 in FIG. 3 are performed again (S520). If the information necessary for the calculation has been determined (S510-Yes), the determination flag is confirmed (S530). Specifically, the parameter calculation button 770 can be turned on to inform the user that the output step is ready (S530). By pressing the lit parameter calculation button 770, the user can input information necessary to calculate the predicted arrival temperature and the predicted design arrival time for the design settling operation amount. In the preferred embodiment, the user inputs the design settling operation amount (MV1) through the input device 135 (S540).

Based on the above information, the prediction unit 190 calculates a predicted arrival temperature (SP1) and a design prediction arrival time (t1) at the time of the design settling operation amount. Specifically, the predicted arrival temperature (SP1) can be obtained by the following equation (S550);
Estimated temperature (SP1) = Settling temperature (SP0)
X Design setting operation amount (MV1) / setting operation amount (MV0).

About design prediction arrival time (t1), it can ask for by the following formulas (S550);
Design predicted arrival time (t1) = Settling arrival time (t0)
X Predicted arrival temperature (SP1) / settling temperature (SP0).

  In order to determine whether or not the predicted arrival temperature (SP1) and the predicted design arrival time (t1) at the design settling operation amount thus obtained are desired values (S560), these values are displayed on the display device 145. Can be displayed. When these values are not desired values (S560-No), the user inputs another design settling operation amount (MV1) via the input device 135 (S540). In the case of a desired value (S560-Yes), the predicted arrival temperature (SP1) at the time of the design settling operation amount and the design predicted arrival time (t1) are output as parameters (S570).

(Display of predicted temperature and design predicted time at design settling operation amount)
FIG. 10 shows an example (1000) in which the output results of the parameters executed in the flow 500 of FIG. 5 are displayed. In the preferred embodiment, pressing the lit parameter calculation button 770 (S530) makes a transition to a state in which the design settling operation amount (MV1) can be input. Item 2 (1030) can be displayed as “design setting operation amount”, and a numerical value (1035) can be blinked so that a specific value can be input. In a preferred embodiment, the numerical value can be increased or decreased by the user pressing the up / down buttons (750, 760) in the blinking state (1035). For example, the numerical value blinks in a state where 50% is displayed as the default value, and the “design setting operation amount” can be changed with the up and down buttons (750, 760).

  The display example 1000 in FIG. 10 shows the predicted arrival temperature and the predicted design arrival time when the design settling operation amount is 50%. Specifically, the predicted arrival temperature (SP1) is displayed in item 1 (1020), and the predicted design arrival time (t1) is displayed in item 3 (1040). The specific value of each item can be displayed as “250 ° C.” (1025) and “60 seconds” (1045) (S550). If the predicted arrival temperature (SP1) value (1025) and the design prediction arrival time (t1) value (1045) displayed here are not desired values (S560-No), the user presses the up and down buttons (750, 760). The “design setting operation amount” can be changed with. In the preferred embodiment, every time the up / down button (750, 760) is pressed, the value (1025) of the predicted arrival temperature (SP1) and the value (1045) of the predicted predicted arrival time (t1) are updated and displayed. The updated predicted arrival temperature (SP1) value (1025) and design predicted arrival time (t1) value (1045) can be repeatedly displayed until a desired value is obtained (S570).

[Embodiment 3]
Another embodiment of the present invention will be described below. For convenience of explanation, members having the same functions as those described in the above embodiment are given the same reference numerals, and the description thereof will not be repeated.

[Heater capacity magnification (n) prediction]
Based on the calculated information (S350), a parameter indicating the heater capability that the heater 170 can exert on the controlled object 150 in the current temperature control system configuration is calculated. In a preferred embodiment, the heater capacity magnification is predicted as a parameter.

  FIG. 6 shows an example (600) of a flowchart for calculating the heater capacity magnification. First, it is confirmed whether information necessary for calculation has been determined (S610). If it has not been determined (S610-No), Steps S310 to S350 in FIG. 3 are performed again (S620). If the information necessary for the calculation has been determined (S610-Yes), the determination flag is confirmed (S630). Specifically, the parameter calculation button 770 can be turned on to notify the user that the output step is ready (S630). The user can input information necessary to calculate the heater capacity magnification by pressing the lit parameter calculation button 770. In the preferred embodiment, the user inputs the design arrival temperature (SP2) and the design arrival time (t2) via the input device 135 (S640).

Based on the information, the prediction unit 190 calculates the heater capacity magnification (n). Specifically, it can be obtained by the following formula (S650);
Heater capacity magnification (n) = (Settling time (t0) / Design time (t2))
X (design reached temperature (SP2) / settling temperature (SP0)).

  In order to determine whether or not the heater capacity magnification (n) thus obtained is a desired value (S660), these values can be displayed on the display device 145. When these values are not desired values (S660-No), the user inputs another design attainment temperature (SP2) and design attainment time (t2) via the input device 135 (S640). If the value is a desired value (S660-Yes), the heater capacity magnification (n) is output as a parameter (S670).

[Display of heater capacity magnification]
FIG. 11 shows an example in which the output result of the parameter executed in the flow 600 of FIG. 6 is displayed. In a preferred embodiment, pressing the lit parameter calculation button 770 (S630) makes a transition to a state in which the design attainment temperature (SP2) can be input. In a preferred embodiment, item 1 (1120) can be displayed as “design reached temperature” and the numerical value (1125) can be blinked so that a specific value can be entered. In a preferred embodiment, the value can be increased or decreased by the user pressing the up / down buttons (750, 760) in the blinking state (1125). Further, “design arrival time” is displayed in item 2 (1130), and a numerical value (1135) can be blinked so that a specific value can be input. In the preferred embodiment, the numerical value can be increased or decreased by the user pressing the up / down buttons (750, 760) in the blinking state (1135).

  The display example 1100 of FIG. 11 shows the heater capacity magnification (n) when the design attainment temperature (SP2) is “400 ° C.” and the design attainment time (t2) is “70 seconds”. Specifically, the design arrival temperature (SP2) is displayed in item 1 (1120), and the design arrival time (t2) is displayed in item 2 (1130). Then, specific values of the respective items can be changed, and in the example of FIG. 11, “400 ° C.” (1125) and “70 seconds” (1135) can be input (S640). The heater capacity magnification is shown in item 3 (1140), and a specific value is displayed as “2.0 times” (1145). When the value “2.0 times” (1145) of the heater capacity magnification (n) displayed here is not a desired value (S660-No), the user presses the up / down buttons (750, 760) to “design reached temperature”, The “design arrival time” can be changed. In a preferred embodiment, each time the up / down button (750, 760) is pressed, the heater capacity magnification value (1145) is updated and displayed. The updated heater capacity magnification value (1145) can be repeatedly displayed until it reaches a desired value (S670).

[Embodiment 4]
In the first to third embodiments, the mode in which the output such as the parameter is displayed on the display device 145 included in the temperature controller 110 has been described. In another preferred embodiment, each parameter value output to the output unit 140 in steps S350, S450, S570, and S670 can be output to an external display device. Specifically, the output unit 140 includes an output terminal, and an output signal can be output via the output terminal to display each output value on an external display device.

  In the first to third embodiments, the mode in which the temperature controller 110 includes the input device 135 for inputting a desired value by the user has been described. In still another preferred embodiment, an input such as a numerical value by the user can be input via an external input device. Specifically, the input unit 130 includes an input terminal, can receive an input signal through the input terminal, and can input each numerical value from an external input device.

[Embodiment 5]
In yet another preferred embodiment, the temperature regulator according to the present invention can be controlled by PLC control via a network such as a fieldbus. In Embodiment 4 described above, the input unit 130 includes an input terminal and the output unit 140 includes an output terminal. However, instead of these, input / output signals can be transmitted and received by a fieldbus-compatible network card. .

  The network control is not limited to the fieldbus, and can be implemented by other network modes such as industrial Ethernet (registered trademark).

  In a further preferred embodiment, the temperature controller according to the present invention is provided with an IP address so as to function as a so-called smart device, and can be controlled via the Internet as an IoT-compatible device. In this aspect, input / output for parameter prediction can be performed on a computer screen connected to a network.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 100 Temperature control system 110 Temperature regulator 120 Calculation part 130 Input part 135 Input apparatus 140 Output part 145 Display apparatus 150 Control object 160 Temperature sensor 170 Heater 180 Control part 190 Prediction part 710 Display panel 750, 760 Up and down button 770 Parameter calculation button 780 Display switching button

Claims (8)

An input unit for receiving the measured value of the temperature of the controlled object;
A control unit that calculates an operation amount for the heating device by a temperature control calculation based on the measurement value;
Actually executed by the control unit based on the time series data of the measured value and the manipulated variable obtained under conditions when the control is actually executed so that the control target is set to a predetermined target temperature. A prediction unit that predicts a parameter indicating a prediction control result when the control of the control target is executed under a condition different from the control condition;
An output unit that outputs the parameter predicted by the prediction unit. The prediction unit is
Calculate the settling temperature, the settling operation amount, and the settling arrival time from the time series data,
The temperature controller according to claim 1, wherein the parameter is predicted with reference to at least two pieces of information of the settling temperature, the settling operation amount, and the settling arrival time. The predictor further includes:
The maximum manipulated variable is calculated from the time series data,
If the maximum operation amount is 100%, the time when the settling temperature is reached is settling arrival time,
If the maximum manipulated variable is less than 100%, a value obtained by dividing the product of the temperature and the maximum manipulated variable at the time when the temperature rising rate reaches the maximum in the temperature rising process leading to the settling temperature by the maximum temperature rising rate. The temperature controller according to claim 2, wherein the temperature is calculated as a settling arrival time. The parameter is a predicted settling temperature and a predicted settling arrival time when the control of the control target is executed under a condition different from the condition of the control that is actually executed. Item 1. The temperature controller according to item 1. The parameters include at least a predicted maximum temperature and a predicted arrival time;
The prediction unit
Calculating the predicted maximum temperature by dividing the settling temperature by the settling manipulated variable;
5. The temperature regulator according to claim 2, wherein the predicted arrival time is calculated by dividing a product of the settling arrival time and the predicted maximum temperature by the settling temperature. 6. . The parameters include at least a predicted arrival temperature and a design predicted arrival time at the time of a design settling operation amount,
The prediction unit
The predicted arrival temperature is calculated by dividing the product of the settling temperature by the design settling operation amount input from the user to the input unit via the input device by the settling operation amount,
5. The temperature adjustment according to claim 2, wherein the design predicted arrival time is calculated by dividing a product of the settling arrival time and the predicted arrival temperature by the settling temperature. vessel. The parameter includes the heater capacity magnification,
The prediction unit
A value obtained by dividing the settling arrival time by the design arrival time input from the user to the input unit via an input device;
5. The heater capacity magnification is calculated by multiplying a design ultimate temperature input from the user via the input device by a value obtained by dividing the design temperature by the settling temperature. The temperature controller according to any one of the above. In a temperature controller including an input unit, a control unit, a prediction unit, and an output unit,
The input unit receives a measurement value of a temperature to be controlled,
The control unit calculates an operation amount for the heating device by a temperature control calculation based on the measurement value,
The predicting unit is based on the measurement value and the time series data of the manipulated variable obtained under the condition when the control unit actually performs control so that the control target is set to a predetermined target temperature. Predicting a parameter indicating a predicted control result when executing the control of the control target under a condition different from the condition of the actually executed control;
The method for predicting a parameter indicating a prediction control result, wherein the output unit outputs the parameter predicted by the prediction unit.

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