TW201913257A - Regulator and degradation position detection method - Google Patents

Abstract

This invention provides a controller and a deterioration position detection method. The surveillance personnel easily confirm the deteriorated operating position in the operating range of the operating end. A segment display section composed of a plurality of display segments capable of individually controlling lighting is provided so that the display control section detects the abnormal segment with abnormal actual feedback value in the actual feedback value and the estimated feedback value obtained during the driving period from a start position to a stop position, so as to identify and display the display segment corresponding to the abnormal segment using a display form different from the display segment in the segment other than the abnormal segment.

Description

Regulator and method for detecting deterioration position

The present invention relates to a degraded position detection technique for detecting a degraded position from an operating range of an operation end.

The regulator is a control device that controls process conditions such as temperature, humidity, pressure, flow, and the like to a predetermined set value by controlling an operating end (actuator) of a machine having a movable body such as a motor or a valve as an output end. Generally, the operating end is provided with an encoder that detects the movement position of the movable body, and the regulator can adjust the operation amount used to control the operating end according to the feedback value obtained by the encoder.

Previously, as a control device (regulator) for controlling a field device, a control device including a defect detection device for an operating end such as a motor or a valve has been proposed (for example, refer to Patent Document 1). This prior art is a technique for determining whether the operation of the operating end has deviated from a predetermined allowable range based on the following deviation DM (= MV-MP) of the operation amount MV and the operation position MP and the change rate ΔMP of the operation position MP. When it is determined that the device has deviated from the allowable range, an abnormality has occurred in the operation side of the determination device.

Prior art literature

Patent literature

Patent Document 1: Japanese Patent Laid-Open No. 2017-033140

Problems to be solved by the invention

Generally, encoders installed on the operating side are susceptible to deterioration due to wear. Compared with the environmental characteristics or deterioration over the years represented by ambient temperature, its abrasion depends more on the control of the controller on the operating end. For example, when the operating end is often opened and closed in a narrow operating range (for example, the opening degree is 40% to 50%), the encoder deteriorates only in this operating range. Therefore, although the operating end is controlled to the specified opening degree, there may be cases where the feedback value of the encoder shows an abnormal value due to the deterioration of the encoder.

Generally, when an abnormality occurs in the operating side at the site where the regulator is installed, in order to correctly respond to the abnormality, it is important that the site monitor knows which operating position of the operating range of the operating side has caused the abnormality.

In addition, in order to confirm the deterioration of the operating end and urge the user to replace it, the maintenance personnel must connect an external device such as a recorder and obtain data indicating the deterioration.

However, in this kind of data acquisition operation, wiring must be removed in order to connect an external device, and there is a risk of incorrect wiring when it is restored. Therefore, it is difficult to perform the data acquisition operation at a frequency suitable for maintenance or at a timing when confirmation is desired.

In addition, when the operation terminal is continued to be used without replacement, the possibility of break maintenance (repair work after complete destruction) is high, and it is conceivable that the device may be stopped due to emergency repair, or The loss caused by the production of good products.

The present invention is an invention to solve such a problem, and an object thereof is to provide a degraded position detection technology in which a monitor can easily confirm a degraded operation position in an operation range of an operation terminal on the spot.

Technical means to solve problems

In order to achieve such an object, the regulator of the present invention is based on an operation amount calculated based on a preset setting value and a control amount detected from a control object to drive the operation end, thereby controlling the operation position of the operation end. The regulator for automatic control is provided with a measured feedback value calculation unit that calculates, based on a detection signal output from an encoder at the operation end, a fixed time interval indicating an operation position of the operation end corresponding to the operation amount. The actual feedback value; the estimated feedback value calculation unit calculates an estimated feedback value corresponding to the measured feedback value based on the measured feedback value calculated before the actual measured feedback value and does not include the influence of degradation; the drive control unit corresponds to the instruction The operation of instructing the detection of the deteriorated position is such that the operation position is driven and controlled at a fixed speed from a previously specified start position to a stop position; the segment display section includes an individual control A plurality of display segments that are lit; and a display control unit that detects from the start position to the stop position Among the measured feedback value and the inferred feedback value obtained during the driving period, the measured feedback value is an abnormal interval which is different from a display segment corresponding to a section other than the abnormal interval. A display form of, which identifies and displays a display segment corresponding to the abnormal section in the segment display section.

In addition, a configuration example of the regulator of the present invention is a configuration example in which, when the display control unit determines the abnormal section, a deviation between the actual measured feedback value and the estimated feedback value is set in advance. A plurality of abnormal ranges that are periodically set outside the range of the allowable range are compared. When the deviation is included in any of the abnormal ranges, the abnormal range is identified and displayed in a separate display form within the abnormal range. The display segment corresponding to the abnormal section is described.

In addition, a configuration example of the regulator of the present invention is a configuration example in which the segment display section includes a plurality of display segments arranged side by side in a line, and each of these display segments corresponds to its own arrangement The position corresponds to any one of a plurality of partial operation sections that are set by dividing the entire operation section of the operation end.

In addition, one configuration example of the regulator of the present invention is a configuration example in which the segment display section includes displaying arbitrary numbers, characters, or symbols by turning on and off a plurality of display segments at any place. A plurality of segment displays of symbols display the symbols representing the abnormal sections output from the display control unit in the display format through the segment displays.

In addition, a configuration example of the regulator of the present invention is a configuration example further including a feedback value selection unit, where a deviation between the actual measured feedback value and the estimated feedback value is set in advance. When the allowable range is within the range, the measured feedback value is selected as the adjustment return value for the adjustment of the operation amount. When the deviation is outside the allowable range, the inferred feedback is selected. Value as the adjustment feedback value.

In addition, the method for detecting a deteriorated position of the present invention is based on an operation amount calculated based on a preset value and a control amount detected from a control object, and drives the operation end, thereby automatically operating the operation position of the operation end. A method for detecting a deteriorated position used in a controlled regulator includes a feedback value calculation step, and an actual measured feedback value calculation unit calculates and indicates that the feedback value calculation unit corresponds to the fixed time interval based on a detection signal output from an encoder at the operating end. The measured feedback value of the operating position of the operating end of the operation amount; the estimated feedback value calculation step, the estimated feedback value calculation unit calculates the actual measured feedback value based on the measured feedback value that does not include the influence of degradation and is calculated before the measured feedback value. Inferred feedback value corresponding to the feedback value; in the drive control step, the drive control unit corresponds to the instruction operation indicating the detection of the degraded position, so that the operation position is shifted at a fixed speed from the start position specified in advance to the stop position, and The operation terminal performs drive control; and a display control step, the display control section Among the measured measured feedback value and the estimated feedback value obtained during the driving period from the start position to the stopped position, the measured feedback value is an abnormal interval which is abnormal and corresponds to The display forms having different display segments in sections other than the abnormal section are identified and displayed in a section display section including a plurality of display sections that can individually control lighting, corresponding to the abnormal section.

Effect of the invention

According to the present invention, the abnormal section on the operation end is identified and displayed by the corresponding display segment of the segment display section. Generally, the size of the housing of the regulator installed in the field is relatively small, and a high-resolution screen such as a personal computer (PC) cannot be set in the regulator. According to the present embodiment, the position of the abnormal section is recognized and displayed on the screen only by providing a segment display section including a plurality of display segments in the regulator. Therefore, the monitor can easily confirm the scene.

Therefore, it is not necessary to connect an external device such as a recorder to obtain data indicating the deterioration, and the work load can be greatly reduced. In addition, there is no need to remove the wiring in order to connect an external device, and there is no risk of incorrect wiring when it is restored. Therefore, the data can be obtained at a frequency suitable for maintenance or at a timing when confirmation is desired, and the deterioration of the operation end 30 can be confirmed extremely smoothly and the user can be urged to perform replacement. Therefore, it is possible to suppress post-mortem inspections, and to prevent the equipment from being stopped due to emergency repairs or losses caused by the occurrence of defective products.

Next, an embodiment of the present invention will be described with reference to the drawings.

First Embodiment

First, the regulator 10 according to the first embodiment of the present invention will be described with reference to FIG. 1. FIG. 1 is a block diagram showing a configuration of a regulator according to a first embodiment.

The regulator 10 is a control device for operating an end of a machine having a movable body such as a motor or a valve based on an operation amount MV calculated based on a preset setting value SP and a control amount PV detected from a control object. The operating position of the actuator) 30 is automatically controlled, thereby controlling process conditions such as temperature, humidity, pressure, and flow rate to a predetermined set value SP.

The operating terminal 30 is provided with an encoder ENC that detects the operating position of the movable body M, and has a function of outputting a detection signal P indicating the detected operating position to the regulator 10.

Regulator

As shown in FIG. 1, the regulator 10 includes a set value acquisition section 11, a control amount acquisition section 12, an operation amount calculation section 13, an operation input section 14, a drive control section 15, a drive section 16, an operation position acquisition section 17, and a measured feedback. The value calculation unit 18, the estimated feedback value calculation unit 19, the display control unit 20, the segment display unit 21, the storage unit 22, and the communication interface (Interface (I / F)) unit 23 are the main functional units. Among these functional units, the operation amount calculation unit 13, the drive control unit 15, the measured feedback value calculation unit 18, the estimated feedback value calculation unit 19, and the display control unit 20 are performed by a central processing unit (CPU) and a program. Coordinated action to achieve.

The set value acquisition unit 11 has a function of obtaining a set value SP from a set value signal received from a higher-level device or an operation unit (neither shown) and outputting the set value SP to the operation amount calculation unit 13.

The control amount acquisition unit 12 has a function of acquiring a control amount PV from a control amount detection signal indicating a process value detected from a control object, and outputting the control amount PV to the operation amount calculation unit 13.

The operation amount calculation unit 13 has a function of performing a calculation operation such as a proportional integral differential (PID) based on the set value SP and the control amount PV to calculate the operation amount MV.

As shown in FIG. 3 to be described later, the operation input unit 14 includes an operation button or an operation switch provided on the front panel 10P of the regulator 10, and has an operation input of a monitor on site to detect operations such as detection of a deteriorated position. Functions.

In the case of automatic control, the drive control unit 15 has a function of generating and outputting a drive signal DS corresponding to the operation amount MV calculated by the operation amount calculation unit 13, thereby performing drive control on the movable body M of the operation terminal 30. The function corresponding to the instruction operation indicating the detection of the degraded position detected by the operation input section 14, generating and outputting the operation position of the operating terminal 30 at a fixed speed from the previously specified start position PS to the stop position PE A function of the drive signal DS up to now; and a function of adjusting the operation amount MV (drive signal DS) based on the adjustment feedback value Fa including the measured feedback value Fd calculated by the measured feedback value calculation unit 18.

The drive unit 16 has a function of outputting a signal corresponding to the drive signal DS from the drive control unit 15 to the movable body M of the operation terminal 30, thereby driving the operation terminal 30 to a predetermined operation position.

The operation position acquisition unit 17 has a function of acquiring a detection signal P from the encoder ENC of the operation terminal 30 and outputting an operation position MP of the operation terminal 30.

The measured feedback value calculation unit 18 has a function of calculating a measured feedback value Fd representing the operating position MP as a percentage based on the operating position MP from the operating position acquisition unit 17.

The estimated feedback value calculation unit 19 has calculations based on the measured feedback value Fd ′ calculated before the measured feedback value Fd and does not include the influence of deterioration, the unit change amount ΔF described later, and the direction of change of the drive signal DS from the drive control unit 15. The function of inferring the feedback value Fe corresponding to the measured feedback value Fd.

FIG. 2 is a calculation example of the estimated feedback value. Here, it is shown that the operating position of the operating end 30 is shifted from the fully closed state (starting position PS) to the fully open state (at the time required for detection Ta from the detection start time T1 to the detection stop time T2) at a constant speed ( For the feedback value up to the stop position PE), the horizontal axis represents time, and the vertical axis represents feedback value. Furthermore, the start position PS or the stop position PE is not limited to the fully closed state or the fully open state, and a state corresponding to an opening degree between the fully closed state and the fully open state may be set as the start position PS or the stop position PE.

If the operating position of the operating end 30 is displaced at a fixed speed in a fixed direction (open direction or closed direction), when there is no deterioration in the operating end 30, the measured feedback value Fd increases or decreases linearly. For example, when the measured feedback value Fd that changes during the sampling time Ts is set as the unit change amount ΔF, and there is no deterioration in the operating position corresponding to the period Ts from time t-1 to t, the drive When the signal DS increases and the operating end 30 is displaced in the open direction at a fixed speed, it becomes Fd (t) = Fd (t-1) + ΔF. On the contrary, when the driving signal DS decreases and the operating end 30 is closed at a fixed speed In the case of displacement in the direction, Fd (t) = Fd (t-1) −ΔF. If the drive signal DS does not change, Fd (t) = Fd (t-1).

Therefore, when degradation is included in Fd (t + 1) at time t + 1, when the drive signal DS increases and the operating end 30 is displaced in the open direction at a fixed speed, the inferred feedback value at time t + 1 can be obtained by Fe (t + 1) = Fd (t) + ΔF. In contrast, when the driving signal DS decreases and the operating end 30 is displaced in the closed direction at a fixed speed, the estimated feedback value at time t + 1 can be obtained by Fe (t + 1) = Fd (t)- It can be estimated by ΔF. In addition, if the driving signal DS does not change, the estimated feedback value at time t + 1 can be estimated as Fe (t + 1) = Fd (t).

In addition, ΔF is obtained from ΔF = Ts / Ta × 100% based on the sampling time Ts and the time Ta required for detection. In addition, whether or not Fd (t) is the measured feedback value Fd ′ that does not include the influence of deterioration can be determined by, for example, whether the difference between Fd and Fe D = Fd−Fe is included in a preset allowable range εd. Therefore, if Fd ′ which is closest in time to the estimated feedback value Fe to be calculated is used, Fe can be estimated with the highest accuracy.

The display control unit 20 has a function of storing the measured feedback value Fd and the estimated feedback value Fe obtained during the period from the start position PS to the stop position PE in the storage unit 22; and storing the Fd and Fe compares and detects Fd as an abnormal abnormal section; and recognizes and displays the display section corresponding to the abnormal section in the section display section 21 in a display form different from the display section corresponding to the section other than the abnormal section. The function of the segment.

The segment display unit 21 includes a plurality of display segments that can individually control lighting. The segment display unit 21 has lighting control of the display segment indicated from the display control unit 20 in the indicated display form, thereby identifying and displaying an abnormal section. Functions.

FIG. 3 is a front external view of the regulator. As shown in FIG. 3, a main display section 21A, a sub-display section 21B, a bar-shaped display section 21C, and an operation input section 14 are arranged on a front panel 10P provided on the front of the regulator 10.

The main display section 21A and the sub-display section 21B have a configuration in which segment displays such as a 7-segment display or a 16-segment display are arranged side by side with a predetermined number of bits, and the segment display corresponds to the display control section 20 The instructions will include a light emitting diode (Light Emitting Diode, LED), a lamp, a liquid crystal display (Liquid Crystal Display, LCD), a fluorescent display tube, and other general display segments of the display segment at any location lamp · Turn off the light to display arbitrary symbols such as digits, characters, or signs.

Generally, when the operating position of the operating end is automatically controlled with respect to a set value SP set in advance, the main display portion 21A and the sub display portion 21B display the set value SP, the manipulated variable MV, the controlled variable PV, and the like through symbols. Data representing the control status.

The bar-shaped display section 21C has a configuration in which a plurality of display segments including general display segments such as LEDs, lamps, LCDs, and fluorescent display tubes are arranged side by side in a horizontal direction only in a predetermined number.

Normally, when the operating position of the operating end is automatically controlled with respect to a set value SP set in advance, the bar display section 21C displays data indicating the control status such as the operation amount MV and the control amount PV.

In the present embodiment, when the bar-shaped display section 21C is used as the segment display section 21, when the deterioration position of the operation terminal 30 is detected, it is recognized in a display form different from the display segment corresponding to the section other than the abnormal section. A case where a segment is displayed in the segment display section 21 corresponding to an abnormal section in which the measured feedback value Fd is abnormal is displayed. Regarding the identification display, as for the abnormal section and the normal section, as long as the display methods such as different display colors, brightness, lighting, extinction, and blinking are used, it is sufficient.

The storage unit 22 includes a semiconductor memory and has a function of storing various data such as the measured feedback value Fd and the estimated feedback value Fe from the display control unit 20.

The communication I / F unit 23 has the actual measured feedback value Fd and the estimated feedback value Fe stored in the storage unit 22, and reads to an external device or a storage medium such as a universal serial bus (USB) memory (neither is (Illustrated) relay function.

Operation of the first embodiment

Next, the operation of the regulator 10 according to the present embodiment will be described with reference to FIG. 4. FIG. 4 is a flowchart showing a deterioration position detection process.

The regulator 10 executes the degraded position detection process of FIG. 4 in response to an operation of a monitor instructed to start the detection of the degraded position detected by the operation input unit 14. Furthermore, before performing the deterioration position detection process, the drive control of the operation terminal 30 according to the operation amount MV is interrupted in advance.

First, the drive control unit 15 drives the operation terminal 30 to a designated start position PS, for example, to a fully closed position (step 100).

Then, the drive control unit 15 starts the drive control of gradually shifting the drive position of the operating end 30 to the designated stop position PE, for example, the fully open position at a fixed speed V (step 101).

Thereafter, the operating position acquisition unit 17 waits until the detection timing arrives at a fixed time interval (step 102: No), and acquires the encoder ENC from the operation terminal 30 in response to the detection timing (step 102: Yes). The detection signal P is detected and the operation position MP of the operation terminal 30 is detected (step 103).

Next, the measured feedback value calculation unit 18 calculates a measured feedback value Fd representing the operating position MP as a percentage based on the operating position MP from the operating position acquisition unit 17 (step 104).

In addition, the estimated feedback value calculation unit 19 calculates and compares the measured feedback value Fd ′, the unit change amount ΔF, and the direction of change of the drive signal DS from the drive control unit 15 based on the measured feedback value Fd ′ that does not include the influence of degradation, calculated before the measured feedback value Fd. The estimated feedback value Fe corresponding to the measured feedback value Fd (step 105).

Thereafter, the display control unit 20 obtains the measured feedback value Fd from the measured feedback value calculation unit 18, obtains the estimated feedback value Fe from the estimated feedback value calculation unit 19, and stores these feedback values in the storage unit 22 (step 106).

Then, the latest measured feedback value Fd and the estimated feedback value Fe stored in the storage unit 22 are obtained, the Fd and Fe are compared, and an abnormal interval in which the measured feedback value Fd is abnormal is detected (step 107).

Then, the display control unit 20 recognizes and displays the segment display unit 21 (the bar display unit) in a display format different from the display segment corresponding to the interval other than the abnormal interval with respect to the detected abnormal interval and the normal interval other than the detected abnormal interval. 21C) The display segment corresponding to the abnormal section (step 108).

Then, the drive control unit 15 confirms whether the operation end 30 has been driven to the stop position PE (step 109), and if it has not been driven to the stop position PE (step 109: No), returns to step 102 and repeats the above Processing.

On the other hand, when it has driven to the stop position PE (step 109: Yes), a series of deterioration position detection process is complete | finished.

FIG. 5 is an explanatory diagram showing a correspondence between an operation section of an operation end and a display segment. In the example of FIG. 5, ten display segments are provided in the bar-shaped display section 21C. When all the display segments are used to display the motion range from fully closed to fully open, the motion range can be divided into 10 To display several partial operation intervals (S1, S2, ..., S10). That is, each of these display segments corresponds to its own arrangement position, and corresponds to any one of a plurality of partial operation sections provided by dividing the entire operation section of the operation terminal 30.

For example, as a display form, when the abnormal range is indicated by blinking and the normal range is indicated by lighting, the display corresponds to the abnormal section S3, abnormal section S4, and abnormal section S5 in which an abnormality is detected in the measured feedback value Fd. The segment flashes. In addition, the display sections corresponding to the normal section S1, the normal section S2, the normal section S6, ..., and the normal section S10 other than these abnormal sections are lit. Thereby, the monitor can easily confirm the abnormal section of the operation terminal 30 at the scene, that is, the degraded operation position in the operation range.

FIG. 6 is a display example in the deterioration position detection operation. Here, an example is shown in which the operation end 30 is driven from the fully closed state (starting position PS) to the fully open state (stopping position PE). The display control unit 20 performs display control as shown in FIG. 6 based on the actual measured feedback value Fd and the estimated feedback value Fe read from the storage unit 22.

First, the display control unit 20 turns off all the display segments when the detection of the deteriorated position is started. During the detection process, the display segment corresponding to the detection section is turned on and displayed according to the progress of the operation. Here, when the actual measured feedback value Fd is abnormal in the detection interval and it is determined to be an abnormal interval, the display segment corresponding to the detection interval is displayed in a blinking manner. Therefore, during the detection process, the detection status of each section is sequentially displayed, and when the detection is stopped, the presence or absence of abnormality in each detection section is identified and displayed through the lighting or flashing of the display segment. The on-site monitor can easily confirm the detection operation Progress and test results.

FIG. 7 is another display example in the deterioration position detection operation. Here, when the main display section 21A or the sub-display section 21B shown in FIG. 3 is used as the segment display section 21, the operation end 30 is driven from the fully closed state (starting position PS) to the fully open state ( Stop position PE).

First, when the display control unit 20 starts the detection of a degraded position, the segment display of the segment display unit 21 displays "0.000" indicating "0%" as an operation amount MV indicating a fully closed state (start position PS). ", During the detection process, an operation amount MV corresponding to the detection interval is displayed corresponding to the progress status of the action, for example," 55.000 "of" 55% ". Here, when the actual measured feedback value Fd is abnormal in the detection interval and it is determined to be an abnormal interval, an operation amount MV corresponding to the detection interval, for example, “60.000” of “60%” is displayed in a blinking manner.

Thereafter, when the detection is stopped, "100.000" indicating "100%" of the operation amount MV indicating the fully open state (stop position PE) is displayed. When an abnormal interval is detected, the operation amount MV corresponding to the abnormal interval is performed. Flashing. At this time, when a plurality of abnormal sections are detected, the operation amounts MV corresponding to the abnormal sections are sequentially switched to perform flashing display.

Thereby, the detected abnormal section can be identified and displayed by blinking the arbitrary digits, characters, or symbols, and the monitor at the scene can easily confirm the progress of the detection operation and the detection result.

In addition, the operating terminal 30 does not always deteriorate to the same degree, and there may be a case where a slight degree of deterioration or a severe degree of deterioration is mixed, and therefore the position of the abnormal section also varies depending on the degree of deterioration. Therefore, by displaying differently in the display segment according to the degree of deterioration, these abnormal sections can be identified and displayed. For example, a section with a high degree of deterioration may be set as a fast blink, and a section with a low degree of deterioration may be set as a slow blink.

In this case, the display control unit 20 sets the deviation D = Fd−Fe of the actual measured feedback value Fd and the estimated feedback value Fe when the abnormal interval is determined in a stepwise manner, and is set stepwise outside the range of the preset allowable range εd. Compare multiple abnormal ranges αi (i = 1 to n, n is an integer of 2 or more) corresponding to each degree of degradation. When the deviation D is included in any abnormal range αi, as long as it is relative to this abnormal range αi , It is sufficient to identify and display the display segment corresponding to the abnormal section in the individual display form allocated in advance.

Effects of the first embodiment

As described above, this embodiment is an embodiment in which a segment display unit 21 including a plurality of display segments that can individually control lighting is provided, and the display control unit 20 detects a period of driving from the start position PS to the stop position PE. Among the actual measured feedback value Fd and the inferred feedback value Fe obtained within the range, Fd is an abnormal abnormal interval, and in a display form different from the display segment corresponding to the interval other than the abnormal interval, the display section is compared with the abnormal interval in the display segment. The corresponding display segments are identified and displayed.

Thereby, the abnormal section of the operation terminal 30 is identified and displayed by the corresponding display segment of the segment display section 21. Generally, the size of the housing of the regulator 10 installed in the field is relatively small, and a high-resolution screen such as a PC cannot be set in the regulator. According to the present embodiment, only the segment display unit 21 including a plurality of display segments is provided in the regulator 10 to identify the position of the abnormal section and display the screen. Therefore, the monitor can easily confirm the scene.

Therefore, it is not necessary to connect an external device such as a recorder to obtain data indicating the deterioration, and the work load can be greatly reduced. In addition, there is no need to remove the wiring in order to connect an external device, and there is no risk of incorrect wiring when it is restored.

Therefore, the data can be obtained at a frequency suitable for maintenance or at a timing when confirmation is desired, and the deterioration of the operation end 30 can be confirmed extremely smoothly and the user can be urged to perform replacement. Therefore, it is possible to suppress post-mortem inspections, and to prevent the equipment from being stopped due to emergency repairs or losses caused by the occurrence of defective products.

In addition, in the present embodiment, the display control unit 20 may be configured to deviate the deviation D = Fd−Fe between the actual measured feedback value Fd and the estimated feedback value Fe when the abnormality section is determined, and fall outside the range of the preset allowable range εd. Multiple abnormal ranges αi corresponding to each degree of degradation set in stages are compared. When the deviation D is included in any abnormal range αi, the abnormal range αi is identified and displayed in a separate display form in the abnormal range αi. Show segments. As a result, the monitor can easily confirm not only the abnormal section but also the degree of deterioration at the scene.

In addition, in this embodiment, the drive control unit 15 may be configured to generate and output a drive signal DS corresponding to the operation amount MV calculated by the operation amount calculation unit 13 during automatic control, thereby driving the operation terminal 30, and In response to the instruction operation indicating the detection of the degraded position, a driving signal DS is generated and output to change the operating position of the operating end 30 from the starting position PS to the stopping position PE at a fixed speed, thereby driving the operating end 30.

Second Embodiment

Next, a regulator 10 according to a second embodiment of the present invention will be described with reference to FIG. 8. FIG. 8 is a block diagram showing a configuration of a regulator according to a second embodiment.

In the present embodiment, when there is deterioration in the operating position of the operation terminal 30, a case where the estimated feedback value Fe is used instead of the actual measured feedback value Fd to adjust the operation amount MV (driving signal DS) will be described.

As shown in FIG. 8, in the present embodiment, the regulator 10 is provided with a feedback value selection section 24.

The feedback value selection unit 24 has a function of selecting the measured feedback value Fd as an operation when the deviation D = Fd-Fe of the measured feedback value Fd from the estimated feedback value Fe is within a preset allowable range εa. The function of adjusting the adjustment feedback value Fa of the amount MV (driving signal DS) and outputting it to the drive control unit 15; and when the deviation D is outside the range of the allowable range εa, selecting the inferred feedback value Fe as the adjustment feedback value Fa This is output to the function in the drive control unit 15.

Configurations and operations other than the above in this embodiment are the same as those in the first embodiment, and detailed descriptions thereof are omitted here.

Operation of the second embodiment

Next, an operation of the regulator 10 according to the present embodiment will be described with reference to FIG. 9. FIG. 9 is a flowchart showing a feedback value selection operation.

Each time a new measured feedback value Fd and an estimated feedback value Fe are calculated, the feedback value selection unit 24 performs a feedback value selection operation of FIG. 9.

First, the feedback value selection unit 24 obtains a new measured feedback value Fd and an estimated feedback value Fe (step 200).

Then, the feedback value selection unit 24 calculates the deviation D = Fd-Fe between the two (step 201), and compares it with the preset allowable range εa (step 202).

Here, if the deviation D is included in the allowable range εa (step 202: Yes), the actual measured feedback value Fd is selected as the adjusted feedback value Fa and output to the drive control unit 15 (step 203), and a series of Feedback value selection action.

On the other hand, when the deviation D is not included in the allowable range εa (step 202: No), the estimated feedback value Fe is selected as the adjusted feedback value Fa and output to the drive control unit 15 (step 204).

Effects of the second embodiment

As described above, this embodiment is an embodiment in which the feedback value selection unit 24 selects the measured feedback value Fd as the adjustment when the deviation D between the measured feedback value Fd and the estimated feedback value Fe is within a preset allowable range εa. The feedback value Fa is output to the drive control unit 15. When the deviation D is outside the range of the allowable range εa, the estimated feedback value Fe is selected as the adjusted feedback value Fa and output to the drive control unit 15.

Therefore, in a case where the actual measured feedback value Fd shows an abnormal value due to the influence of the deterioration of the operating terminal 30, the estimated feedback value Fe estimated from the normal actual measured feedback value Fd 'is used for the operation in the drive control section 15. MV (drive signal DS) adjustment. Therefore, even if there is deterioration in an arbitrary operation position of the operation terminal 30, stable adjustment of the operation amount MV can be achieved.

Third Embodiment

Next, a regulator 10 according to a third embodiment of the present invention will be described with reference to FIG. 10. FIG. 10 is a block diagram showing a configuration of a regulator according to a third embodiment.

In the present embodiment, a case where the operating amount MV used in the automatic control is changed when the deteriorated position is detected, and the operation position of the operating end 30 is shifted from the start position PS to the stop position PE will be described.

As shown in FIG. 10, this embodiment further includes an operation amount switching unit 25.

The operation amount switching section 25 has a function of outputting an operation amount MV calculated by the operation amount calculation section 13 during automatic control, and an instruction operation corresponding to detection of a degraded position detected by the operation input section 14. Is switched to a function of outputting an operation amount MVS that changes from a start position operation amount corresponding to the start position PS to a stop position operation amount corresponding to the stop position PE at a fixed speed.

The driving control section 15 has a function of generating and outputting a driving signal DS corresponding to the operation amount MV / MVS output from the operation amount switching section 25, thereby driving the operation terminal 30.

Configurations and operations other than the above in this embodiment are the same as those in the first embodiment or the second embodiment, and detailed descriptions thereof are omitted here.

Effects of the third embodiment

As described above, this embodiment is an embodiment in which the operation amount switching unit 25 outputs the operation amount MV calculated by the operation amount calculation unit 13 during the automatic control, and corresponds to the position indicating the deterioration position detected by the operation input unit 14. The detected instruction operation is switched to output at a fixed speed from the start position operation amount corresponding to the start position PS to the stop position operation amount corresponding to the stop position PE, and the operation amount MVS is output. The driving signal DS of the operation amount MV / MVS output from the operation amount switching section 25 drives the operation terminal 30.

Therefore, the configuration of the operation amount calculation unit 13 and the drive control unit 15 in the existing regulator can be changed, and when the deterioration position of the operation end 30 is detected, the operation position of the operation end 30 can be started at a fixed speed from a previously specified position. Position PS is moved to stop position PE.

Implementation extension

As mentioned above, although this invention was demonstrated with reference to embodiment, this invention is not limited to the said embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration or details of the present invention within the scope of the present invention. In addition, each embodiment can be arbitrarily combined and implemented as long as it is not contradictory.

10‧‧‧ Regulator

10P‧‧‧Front panel

11‧‧‧Set value acquisition section

12‧‧‧Control volume acquisition department

13‧‧‧Operation amount calculation section

14‧‧‧Operation input section

15‧‧‧Drive Control Department

16‧‧‧Driver

17‧‧‧Operation position acquisition section

18‧‧‧Measured feedback calculation unit

19‧‧‧ Inferred feedback calculation unit

20‧‧‧Display Control Department

21‧‧‧ segment display section

21A‧‧‧Main Display

21B‧‧‧Sub Display

21C‧‧‧Bar Display

22‧‧‧Storage Department

23‧‧‧Communication I / F Department

24‧‧‧Reward value selection department

25‧‧‧Operation amount switching section

30‧‧‧Operator

M‧‧‧ movable body

ENC‧‧‧Encoder

SP‧‧‧Setting value

PV‧‧‧Control

MV, MVS‧‧‧ Operation

DS‧‧‧ drive signal

P‧‧‧detection signal

MP‧‧‧action position

Fd, Fd ', Fd (t-1) to Fd (t + 2) ‧‧‧Measured feedback value

Fe‧‧‧ Inferred feedback value

Fa‧‧‧ Adjust feedback value

ΔF‧‧‧Unit change

Ts‧‧‧Sampling time (period)

Ta‧‧‧ Testing time

S1 ～ S10‧‧‧Part of the operation interval

T1‧‧‧ start time

T2‧‧‧ Stop time

εa‧‧‧Allowable range

100 ～ 109, 200 ～ 204‧‧‧‧step

FIG. 1 is a block diagram showing a configuration of a regulator according to a first embodiment. FIG. 2 is a calculation example of the estimated feedback value. FIG. 3 is a front external view of the regulator. FIG. 4 is a flowchart showing a deterioration position detection process. FIG. 5 is an explanatory diagram showing a correspondence between an operation section of an operation end and a display segment. FIG. 6 is a display example in the deterioration position detection operation. FIG. 7 is another display example in the deterioration position detection operation. FIG. 8 is a block diagram showing a configuration of a regulator according to a second embodiment. FIG. 9 is a flowchart showing a feedback value selection operation. FIG. 10 is a block diagram showing a configuration of a regulator according to a third embodiment.

Claims (8)

An adjusting device is an adjusting device for automatically controlling an operation position of an operating end based on an operation amount calculated based on a preset value set in advance and a control amount detected from a control object to drive the operating end. And includes: a measured feedback value calculation unit that calculates a measured feedback value indicating the action position of the operating end corresponding to the operating amount at regular intervals based on a detection signal output from the encoder of the operating end; inferring The feedback value calculation unit calculates an inferred feedback value corresponding to the measured feedback value based on the measured feedback value calculated before the actual measured feedback value and does not include the influence of deterioration; the drive control unit corresponds to the detection of the position where the deterioration is indicated. Instruct the operation to drive the operation end so that the operating position is shifted from a start position specified in advance to a stop position at a fixed speed; a segment display section includes a plurality of individually controllable lightings A display segment; and a display control unit that detects a drive from the start position to the stop position Among the actual measured feedback value and the extrapolated feedback value obtained within the interval, the actual measured feedback value is an abnormal abnormal section, and is displayed in a display form different from a display segment corresponding to a section other than the abnormal section. , Identifying and displaying a display segment corresponding to the abnormal section in the segment display section. The regulator according to item 1 of the scope of patent application, wherein when the display control section determines the abnormal interval, the deviation between the actual measured feedback value and the inferred feedback value is within a range set in advance. A plurality of abnormal ranges that are set stepwise outside are compared, and when the deviation is included in any one of the multiple abnormal ranges, the abnormal range is identified and displayed in a separate display form within the abnormal range. Corresponding display segment. The regulator according to item 1 of the scope of patent application, wherein the segment display section includes a plurality of display segments arranged side by side in a line shape, and these display segments respectively correspond to their own placement positions, and Any one of a plurality of partial operation intervals set by dividing the entire operation interval on the operation side is associated with each other. The regulator according to item 2 of the scope of patent application, wherein the segment display section includes a plurality of display segments arranged side by side in a linear shape, and these display segments respectively correspond to their own placement positions, and Any one of a plurality of partial operation intervals set by dividing the entire operation interval on the operation side is associated with each other. The regulator according to item 1 of the scope of patent application, wherein the segment display unit includes a plurality of segments that display any number of symbols such as numerals, characters, or symbols by turning on or off the plurality of display segments. The segment display displays a symbol indicating the abnormal section output from the display control unit in the display format through each segment display. The regulator according to item 2 of the scope of patent application, wherein the segment display section includes a plurality of segments that display arbitrary numerals, characters, or symbols by turning on or off the plurality of display segments. The segment display displays a symbol indicating the abnormal section output from the display control unit in the display format through each segment display. The regulator according to any one of claims 1 to 6, further comprising: a feedback value selection section, where a deviation between the measured feedback value and the inferred feedback value is When the preset allowable range is within the range, the actual measured feedback value is selected as the adjustment feedback value for the adjustment of the operation amount, and when the deviation is outside the allowable range, the selected range is selected. The inferred feedback value is used as the adjusted feedback value. A method for detecting a deterioration position, which is based on an operation amount calculated based on a preset value set in advance and a control amount detected from a control object to drive an operation end, thereby automatically controlling an operation position of the operation end The degradation position detection method used in the regulator includes: a feedback value calculation step, and a measured feedback value calculation unit calculates, at a fixed time, a detection value corresponding to the operation amount based on a detection signal output from the encoder at the operation end. The measured feedback value of the operating position of the operating end; the estimated feedback value calculation step, the estimated feedback value calculation unit calculates the measured feedback value based on the measured feedback value that does not include the influence of degradation calculated before the measured feedback value The estimated feedback value corresponding to the value; the drive control step, the drive control unit corresponding to the instruction operation indicating the detection of the degraded position, so that the operating position is shifted at a fixed speed from the pre-designated start position to the stop position, The operation terminal performs drive control; and the display control steps, the display control unit checks Among the measured feedback value and the estimated feedback value obtained during the driving period from the start position to the stop position, the measured feedback value is an abnormal abnormal interval, and corresponds to Different display forms of display segments in sections other than the abnormal section identify and display a display section corresponding to the abnormal section in a section display section including a plurality of display sections that can individually control lighting.