TWI515521B - Real time monitoring method for feeding device - Google Patents

Description

Feed device instant monitoring method

The present invention relates to a feed device that can perform reciprocating motion, and more particularly to an instant monitoring method for a feed device.

Feeding devices generally used in reciprocating applications, such as ball screws, linear slides, etc., in order to prevent unwarranted downtime, a monitoring method is designed for the feed device.

Referring to the Japanese patent application JPA_2004003573, there is provided a linear motion device for detecting a potential difference between two sets of temperature signals through an additive circuit or subtraction mainly by a relationship between a positive correlation or an inverse correlation between temperature and voltage. After the circuit, if it is equal to zero, it means normal state, otherwise it means abnormality, so as to prevent downtime without warning.

However, the patent can only be used on a single object to be tested, for example, only the temperature of the nut is monitored. If a set of temperatures comes from the bearing and a set of temperatures comes from the nut, the judgment is misjudged, even from ambient temperature. The result is a misjudgment.

Therefore, how to develop a feed device instant monitoring method, which can solve the above problems, is the motivation of the present invention.

SUMMARY OF THE INVENTION The object of the present invention is to provide an instant monitoring method for a feeding device, which mainly reduces the occurrence of misjudgment and makes the device detectable immediately and accurately.

The reason is that in order to achieve the aforementioned purpose, a feed according to the present invention is provided. The device monitoring method comprises: (A) signal detecting step: performing signal detection on the feeding device, and simultaneously measuring the temperature of the to-be-detected component of the to-be-detected component of the feeding device, The temperature of the connected piece of the connected piece and the ambient temperature; (B) the dimensionless conversion step: performing dimensionless conversion of the temperature of the object to be tested and the temperature of the connected piece to obtain a temperature rise ratio of the object to be tested and The temperature rise ratio of the related component; (C) obtaining the steady state characteristic ratio value range step: calculating the rate of change of the temperature rise ratio of the to-be-detected component at the same time point and the temperature rise ratio of the related component to obtain a feature The proportional value, when the feature ratio values at each time point approach the same, then the similar feature scale value is the steady state feature ratio value, wherein the steady state characteristic scale value is a preset range; (D) The comparison judging step: when the characteristic ratio value calculated at any time point is within the range of the steady-state characteristic ratio value, the to-be-detected component and the related component are all normal, and the characteristic ratio calculated at any time point Value in the range of steady state characteristic ratio values In addition, the member to be detected or the connection member is one of them is abnormal.

Preferably, in the (B) dimensionless conversion step, the ambient temperature is T ₀ , the temperature of the to-be-detected component is T ₁ , the temperature of the connected component is T ₂ , and the temperature of the to-be-detected component is ΔT. ₁ = T _{1 -} T ₀ , the temperature rise of the related piece is ΔT ₂ = T _{2 -} T ₀ , the overall index of temperature rise is T _all = ΔT ₁ + ΔT ₂ , and the temperature rise ratio of the to-be-detected piece is R _a = ΔT ₁ /T _all , and the temperature rise ratio of the related member is R _b = ΔT ₂ /T _all . Preferably, R _a + R _b =1.

Preferably, in the (B) dimensionless conversion step, the ambient temperature is T ₀ , the temperature of the to-be-detected component is T ₁ , the temperature of the connected component is T ₂ , and the initial temperature of the to-be-detected component is T ₁₁ , The initial temperature of the related piece is T ₂₁ , the initial temperature of the environment is T ₀₁ , the temperature rise of the to-be-detected part is ΔT ₁ =T ₁ -T ₁₁ -T ₀ +T ₀₁ , and the temperature rise of the connected piece is ΔT ₂ =T ₂ -T ₂₁ -T ₀ +T ₀₁ , the overall temperature rise index is T _all =ΔT ₁ +ΔT ₂ , the temperature rise ratio of the to-be-detected piece is R _a =ΔT ₁ /T _all , and the to-be-detected The temperature rise ratio of the piece is R _b = ΔT ₂ /T _all . Preferably, R _a + R _b =1.

Preferably, in the step (C) of obtaining a steady-state characteristic ratio value range, the approach is taken closer The temperature rise ratio of the to-be-detected member and the temperature rise ratio of the connected member that are stable are subjected to a rate of change calculation to obtain the steady state characteristic ratio value.

Preferably, in the step (C) of obtaining the steady-state feature ratio value range, the positive and negative ten percent of the steady-state feature ratio value is a steady-state feature ratio value range.

Preferably, the closure member can be a combination of a plurality of components, with the average temperature of the plurality of components being the associated component temperature.

Preferably, the closure member can be a combination of a plurality of components, and the statistical temperature of the plurality of components is the associated component temperature.

The present invention has been described in connection with the preferred embodiments of the present invention in accordance with the accompanying drawings.

11‧‧‧Signal detection steps

12‧‧‧No-dimension conversion steps

13‧‧‧Steps to obtain a steady-state characteristic scale value range

14‧‧‧Comparative judgment steps

20‧‧‧Feeding device

21‧‧‧To be tested

22‧‧‧Contacts

31‧‧‧ Temperature Sensor

20A‧‧‧Ball screw

21A‧‧‧ Nuts

22A‧‧‧ bearing

T ₀ ‧‧‧ ambient temperature

T ₁ ‧‧‧Temperature temperature

T ₂ ‧‧‧ connection member temperature

△T ₁ ‧‧‧When the temperature of the test piece is to be raised

△T ₂ ‧‧‧Connected parts temperature rise

T _all ‧‧‧ overall indicator of temperature rise

R _a ‧‧‧ temperature rise ratio of the test piece to be tested

R _b ‧‧‧ temperature rise ratio of connected parts

T ₁₁ ‧‧‧ initial temperature of the part to be tested

T ₂₁ ‧‧‧ initial temperature of related parts

T ₀₁ ‧‧‧Environmental initial temperature

Figure 1 is a flow chart of the present invention.

2 is a schematic diagram of the (A) signal detecting step of the embodiment of the present invention, showing a state in which the temperature sensor is disposed outside the member to be detected (nut), the connecting member (bearing), and the ball screw.

FIG 3 based (A) schematic diagram of an embodiment of the signal detection step of the present invention, and displays the measured temperature of the recording member to be detected T _1, connection member connected member 22 of the temperature T _2, and the ambient temperature T _0.

4 is a schematic diagram showing the steps of (B) dimensionless conversion step and (C) obtaining a steady state characteristic ratio value range according to an embodiment of the present invention, showing a dimensionless conversion of the temperature T ₁ to be detected and the temperature T _{2 of the} connected member. status.

FIG. 5 is a schematic diagram of an instant monitoring according to an embodiment of the present invention, showing a state in which the feeding device is normally operated.

FIG. 6A is a schematic diagram of an instant monitoring according to an embodiment of the present invention, showing a state in which the feeding device is abnormally actuated.

Fig. 6B is a partial enlarged view of the right side of Fig. 6A.

7A is a schematic diagram of real-time monitoring according to an embodiment of the present invention, which shows that the temperature of the to-be-detected component and the connected component is raised. status.

FIG. 7B is a schematic diagram of the instant monitoring of the embodiment of the present invention, showing a state of determining the temperature rise ratio value of the to-be-detected component and the related component.

Fig. 7C is a partial enlarged view of the right side of Fig. 7B.

FIG. 8A is a schematic diagram of another instant monitoring according to an embodiment of the present invention, showing a state in which the feeding device is abnormally actuated.

Fig. 8B is a partial enlarged view of the left side of Fig. 8A.

Fig. 8C is a partial enlarged view of the right side of Fig. 8A.

FIG. 9A is a schematic diagram of another instant monitoring according to an embodiment of the present invention, showing a state in which the temperature rise of the to-be-detected component and the related component is determined.

FIG. 9B is a schematic diagram of another instant monitoring according to an embodiment of the present invention, showing a state in which the temperature rise ratio value of the to-be-detected component and the related component is determined.

Figure 9C is a partial enlarged view of the left side of Figure 9B.

Figure 9D is a partial enlarged view of the right side of Figure 9B.

It should be noted that in Fig. 3 to Fig. 9d, upper, middle and lower refer to the relative positions of the curves in the figure.

Referring to FIG. 1 to FIG. 6 , an instant monitoring method for a feeding device according to an embodiment of the present invention is mainly provided by (A) signal detecting step 11 and (B) dimensionless conversion step 12 (C). Obtaining a steady-state feature ratio value range step 13 and (D) comparing the determination step 14, wherein: (A) signal detection step 11: performing signal detection on the feed device, and in each detect Simultaneously measuring the temperature of the to-be-detected component of the at least one to-be-detected component 21 of the feeding device 20, the temperature of the connected component of the at least one connecting member 22, and the ambient temperature; as shown in FIG. 2, in the embodiment, the feeding The device 20 is exemplified by a ball screw 20A (which may of course be a linear slide, a motor, or the like which is used in a reciprocating motion). The member to be detected 21 is a nut 21A, and the closing member 22 is a bearing 22A. The lower temperature sensor 31 is disposed outside the nut 21A, the bearing 22A, and the ball screw 20A to obtain the temperature T _{1 of} the to-be-detected member 21 and the temperature of the connecting member of the connecting member 22 . T _2, and the ambient temperature T _0; FIG. 3 is a recording of the feeding device 20 for signal detection results, and also Recording each time point is detected member to be detected temperature T _1, connection member temperature T _2, and the ambient temperature T _0, the horizontal axis represents time in FIG. 3 (h), the vertical axis represents temperature (C), as in FIG. 3 The measured portion temperature T ₁ of the to-be-detected member 21 and the connected member temperature T _{2 of the} connecting member 22 are too unstable to be affected by the environment or the measured position, and therefore, are set to be detected. 21, a temperature sensor 22 on a connected member more 31, the to-be detected member is obtained to be detected 21 temperature T _1, connection member connected member temperature T 22 is the more stable _2, can be reduced by external factors interference. In addition, the more the number of the detecting member 21 and the connecting member 22 is, the more the portion that the feeding device 20 can monitor, so that the monitoring result is more accurate.

The (B) dimensionless conversion step 12: referring to FIG. 3 and FIG. 4, performing dimensionless conversion on each of the to-be-detected component temperature T ₁ and each of the connected component temperatures T ₂ to obtain the to-be-detected element temperature rise ratio R _a and R _b ratio of the connected member; embodiment according to the present embodiment, the continuously measured temperature of the member to be detected and the ratio R _a rise off member connected to the ratio R _b stored The storage device on the back end for subsequent calculations. The dimensionless conversion means that the ambient temperature is T ₀ , the temperature of the to-be-detected component is T ₁ , the temperature of the connected component is T ₂ , and the temperature of the to-be-detected component is ΔT ₁ =T ₁ -T ₀ The temperature rise of the related piece is ΔT ₂ =T ₂ -T ₀ , the overall index of temperature rise is T _all =ΔT ₁ +ΔT ₂ , and the temperature rise ratio of the to-be-detected piece is R _a =ΔT ₁ /T The temperature rise ratio of _all and the related piece is R _b = ΔT ₂ /T _all , where R _a +R _b =1. Of course, in order to make the temperature of the to-be-detected component rise ΔT ₁ and the temperature rise of the connecting member ΔT _{2 is} more accurate, the initial temperature of each component may be deducted first, that is, the initial temperature of the component to be inspected is T ₁₁ , and the initial part is connected. The temperature is T ₂₁ , the initial temperature of the environment is T ₀₁ , the temperature rise of the to-be-detected component is ΔT ₁ =T ₁ -T ₁₁ -T ₀ +T ₀₁ , and the temperature rise of the connected member is ΔT ₂ =T ₂ -T ₂₁ -T ₀ +T ₀₁ .

The (C) to obtain a steady state ratio characteristic value range Step 13: the point at the same time on the member to be detected _{with the} temperature rise ratio of R _a related member of the ratio R _b for calculating the rate of change, in order to obtain a characteristic value ratio That is, the temperature rise ratio R _{a of} the to-be-detected member: the temperature rise ratio R _{b of the related member} . When the feature ratio values at each time point approach the same, then the same feature ratio value is the steady state feature ratio value, and the positive and negative ten percent of the steady state characteristic ratio value is the steady state characteristic ratio. a value range; in this embodiment, the temperature rise ratio R _a of the to-be-detected member that is close to being stable and the temperature rise ratio R _b of the connected component that is stable are calculated to obtain the steady-state feature ratio values as shown, to be the ratio of the temperature rise detecting member 4 _and R _a ratio of the temperature rise of the connection member of the steady-state characteristic R _b calculated from the ratio is 0.6: 0.4, the ratio of the steady-state characteristic value The range is (0.6 ± 10%): (0.4 ± 10%). As shown in FIG. 4, after the dimensionless conversion, the temperature rise ratio R _a of the to-be-detected component is too high (0.7 or more) or too low (0.5 or less) to be not included in the approaching stability. The temperature rise ratio R _{a of the} detecting member is similarly, and the temperature rise ratio R _b of the connecting member is too high (0.5 or more) or too low (0.3 or less) relative to 0.4 to be the inspected piece that is not listed as being stable. The temperature rise ratio R _b . The steady-state feature ratio value range may be a preset value. The larger the preset value is, the less sensitive the detection is. The smaller the preset value is, the more sensitive the detection is. Similarly, the steady state characteristic ratio value range may be deducted by a preset error value, multiplied by a preset weight value, or a combination of other system indicators combined with the above parameters.

The (D) comparison determining step 14: continuously and immediately detecting and calculating the feeding device 20, when the characteristic ratio value calculated at any time point is within the range of the steady-state characteristic ratio value, the waiting The detecting member 21 and the connecting member 22 are both normal. When the characteristic ratio value calculated at any time point is outside the range of the steady-state characteristic ratio value, one of the to-be-detected member 21 or the related member 22 is abnormal. In order to perform the corresponding action.

Accordingly, referring to FIG. 5, a state diagram showing the normal operation of the feeding device 20 is shown, wherein the horizontal axis is time (hours) and the vertical axis is a proportional value (the temperature rise ratio R _{a of} the to-be-detected member and the related member) The steady-state characteristic ratio value calculated by the temperature rise ratio R _b ), since the characteristic ratio values calculated at any time point are in the range of the steady-state characteristic ratio value (0.6±10%): (0.4± Within 10%), therefore, the to-be-detected member 21 (the nut 21A) and the related member 22 (the bearing 22A) are both normal, and at this time, the monitoring is continued.

Referring to FIG. 6A, a state diagram showing abnormal operation of the feeding device 20 is shown, wherein the horizontal axis is time (hours) and the vertical axis is a proportional value (the temperature rise ratio R _{a of} the to-be-detected member and the temperature rise of the related member) The steady-state characteristic ratio value calculated by the ratio R _b is, as shown in FIG. 6B , is a partial enlarged view of FIG. 6A , because the characteristic proportional value calculated at about 3250 hours is at the steady-state characteristic ratio value. outside the range, as shown clearly in FIG. 6B to be the temperature detecting element of the temperature _and the ratio R _a related member of the steady-state ratio R _b wherein a ratio of the calculated value is not obtained (0.6 ± 10%) The range of (0.4±10%) is determined, so that the operation of the feeding device 20 is determined to be abnormal. At this time, since only one single member to be inspected 21 (nut 21A) and a single one are used in this embodiment. The closing member 22 (bearing 22A) is monitored, so that it is immediately judged that one of the to-be-detected member 21 or the related member 22 is abnormal, and a corresponding operation is performed, for example, the inspection member 21 or the related member 22 is inspected. What is the abnormal state for maintenance and replacement, to avoid more serious damage, especially the knot Destruction, and can improve the yield of the feeding device 20 after processing, in order to avoid a large number of scrap workpiece.

Referring to FIGS. 7A, 7B, and 7C, it is shown how the abnormality of the to-be-detected member 21 or the related member 22 is abnormal when the operation of the feeding device 20 is determined to be abnormal. 7A is a temperature/time comparison table of the to-be-detected member 21 (the nut 21A) and the related member 22 (bearing 22A), wherein the horizontal axis is time (hours) and the vertical axis is temperature (celsius); FIG. 7B The ratio of the temperature T ₁ to be detected and the temperature T _{2 of the connecting member} are respectively divided by the ratio of the ambient temperature T ₀ / time ratio, wherein the horizontal axis is time (hours) and the vertical axis is proportional value (the to-be-detected part) The temperature T ₁ and the connection member temperature T ₂ are respectively divided by the ambient temperature T ₀ ), and FIG. 7C is a partial enlarged view of FIG. 7B. Obviously, the ratio of the temperature T ₁ to be detected divided by the ambient temperature T ₀ is too high. It is not stable, so it is judged that the to-be-detected member 21 (for example, the nut 21A) is an abnormal component for maintenance and replacement to avoid more serious damage. In practice, the abnormality may be damage to the component of the nut 21A. Or the nut 21A is poorly lubricated, and it is immediately and accurately detected that early response can be avoided to avoid more serious losses.

Referring to FIG. 8A, a state diagram of another abnormal operation of the feeding device is shown, wherein the horizontal axis is time (hour) and the vertical axis is a proportional value (the temperature rise ratio R _{a of} the to-be-detected member and the temperature of the related member) The steady-state characteristic ratio value calculated by the rising ratio R _b is different from the above embodiment in having two ranges of the steady-state characteristic ratio value, that is, the first steady state between 0 and 200 hours in FIG. 8A The characteristic scale value range is (0.74±5%): (0.26±5%), and the second steady-state characteristic ratio between the 200th and 1000th hours ranges from (0.68±5%): (0.32±5%) .

Since the characteristic ratio value calculated around the 140th hour is outside the range of the first steady-state characteristic ratio value, as shown in FIG. 8B, which is a partial enlarged view on the left side of FIG. 8A, it is obvious that the temperature of the to-be-detected member is The steady-state characteristic ratio value calculated by the rising ratio R _a and the temperature-increasing ratio R _b of the related member is not within the range of (0.74±5%): (0.26±5%), and therefore, the feeding device 20 The action is judged to be abnormal. Since the characteristic ratio value calculated between the 700th and 1100th hour is outside the range of the second steady-state characteristic ratio value, as shown in FIG. 8C, which is a partial enlarged view on the right side of FIG. 8A, it is obvious that the to-be-detected The steady-state characteristic ratio value calculated by the temperature rise ratio R _a of the piece and the temperature rise ratio R _b of the related piece is not within the range of (0.68±5%): (0.32±5%), therefore, the The operation of the feeding device 20 is determined to be abnormal. How to check whether the to-be-detected member 21 (the nut 21A) or the related member 22 (bearing 22A) is abnormal is described below.

First, referring to FIG. 9A, FIG. 9B, and FIG. 9C, it is shown how to check the to-be-detected member 21 (nut 21A) or the connecting member 22 (bearing) when the operation of the feeding device 20 is determined to be abnormal. 22A) What is the abnormal state. 9A is a temperature/time comparison table of the to-be-detected member 21 (the nut 21A) and the related member 22 (bearing 22B), wherein the horizontal axis is time (hours) and the vertical axis is temperature (celsius); FIG. 9B The ratio of the temperature T ₁ to be detected and the temperature T _{2 of the connecting member} are respectively divided by the ratio of the ambient temperature T ₀ / time ratio, wherein the horizontal axis is time (hours) and the vertical axis is proportional value (the to-be-detected part) The temperature T ₁ and the connected piece temperature T ₂ are respectively divided by the ambient temperature T ₀ ), and FIG. 9C is a partial enlarged view of the left side of FIG. 9B. It is obvious that the temperature of the to-be-detected part T _{1 is} divided by the ratio of the ambient temperature T ₀ . It is high and unstable, so it is judged that the to-be-detected member 21 (for example, the nut 21A) is an abnormal element, and the abnormality may actually be ablated by the nut 21A (to be detected 21).

Secondly, referring to FIG. 9A, FIG. 9B, and FIG. 9D, it is shown how to check the to-be-detected member 21 (nut 21A) or the connecting member 22 (bearing 22A) when the operation of the feeding device is determined to be abnormal. ) What is the abnormal state. 9A is a temperature/time comparison table of the to-be-detected member 21 (nut 21A) or the related member 22 (bearing 22A), wherein the horizontal axis is time (hours) and the vertical axis is temperature (celsius); FIG. 9B The ratio of the temperature T ₁ to be detected and the temperature T _{2 of the connecting member} are respectively divided by the ratio of the ambient temperature T ₀ / time ratio, wherein the horizontal axis is time (hours) and the vertical axis is proportional value (the to-be-detected part) The temperature T ₁ and the connected piece temperature T ₂ are respectively divided by the ambient temperature T ₀ ), and FIG. 9D is a partial enlarged view of the right side of FIG. 9B. It is obvious that the temperature of the to-be-detected part T _{1 is} divided by the ratio of the ambient temperature T ₀ . It is high and unstable, so it is judged that the to-be-detected member 21 (for example, the nut 21A) is an abnormal element, and the abnormality may be actually worn by the screw.

It is to be noted that although the present invention uses the nut 21A as the member 21 to be inspected and the bearing 22A as the connecting member 22, the present invention is not limited thereto. That is, the present invention can be used as the member to be detected 21 or the related member 22 as long as the components in the feeding device 20 are used. The instant monitoring method of the feeding device of the present invention is one unit of the same axis, and the same The components in the shaft, such as a ball screw, a linear slide, a motor or a bearing, can also be used as the member 21 to be inspected, and the member to be tested 21 on the same shaft is also a connected member of the other member to be tested. Therefore, the present invention can achieve an abnormality monitoring for judging each component on the same axis, so that the user can perform maintenance early to prevent the abnormal situation from worsening.

In addition, the instant monitoring method of the feeding device of the present invention is suitable for high rigidity and high load, and at least one ball screw and the matching bearing and at least one linear sliding rail are used on the same shaft. And more than one motor to drive the platform of the same axis, the configuration manner can also be used to monitor the abnormal condition of each component on the same axis by the instant monitoring method of the feeding device of the present invention, and the related component can be a combination of multiple components. And the average temperature of the plurality of components or other statistical temperature is the temperature of the connected component. The so-called statistical temperature means that the result of the statistical method represents temperature, such as the median, maximum number, minimum number, or square root opening number of a plurality of data, and the like.

In the above, the above embodiments and the illustrations are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equal variations and modifications made by the scope of the patent application of the present invention are It should be within the scope of the patent of the present invention.

11‧‧‧Signal detection steps

12‧‧‧No-dimension conversion steps

13‧‧‧Steps to obtain a steady-state characteristic scale value range

14‧‧‧Comparative judgment steps

Claims (8)

An instant monitoring method for a feeding device includes: (A) a signal detecting step: performing signal detection on the feeding device, and simultaneously detecting a to-be-detected member of the feeding device of the feeding device at each detecting Temperature, the temperature of the connected piece of the connected piece, and the ambient temperature; (B) the dimensionless conversion step: the dimensionless conversion of the temperature of the object to be detected and the temperature of the connected piece, the dimensionless conversion The ambient temperature is T ₀ , the temperature of the to-be-detected component is T ₁ , the temperature of the connected component is T ₂ , the temperature rise of the to-be-detected component is ΔT ₁ =T ₁ -T ₀ , and the temperature rise of the connected component is ΔT ₂ = T ₂ -T ₀ , the overall temperature rise index is T _all =ΔT ₁ +ΔT ₂ , the temperature rise ratio of the to-be-detected piece is R _a =ΔT ₁ /T _all , and the temperature rise ratio of the related piece is R _b = ΔT ₂ /T _all , to obtain the temperature rise ratio of the to-be-detected component and the temperature rise ratio of the related component; (C) obtaining the steady state characteristic ratio value range step: the to-be-detected component at the same time point The ratio of the temperature rise ratio to the temperature rise ratio of the connected piece is calculated to obtain a characteristic ratio value, and the characteristic ratio value at each time point approaches the phase At the same time, the similar characteristic ratio value is a steady state characteristic ratio value, wherein the steady state characteristic ratio value is a preset range; (D) comparison judgment step: the characteristic ratio calculated at any time point The value of the to-be-detected component and the related component are all normal, and the feature ratio value calculated at any time point is outside the range of the steady-state feature ratio value, the to-be-detected component Or one of the related items is abnormal. An immediate monitoring method for a feeding device as described in claim 1, wherein R _a + R _b =1. An instant monitoring method for a feeding device includes: (A) a signal detecting step: performing signal detection on the feeding device, and simultaneously detecting a to-be-detected member of the feeding device of the feeding device at each detecting Temperature, the temperature of the connected piece of the connected piece, and the ambient temperature; (B) the dimensionless conversion step: the dimensionless conversion of the temperature of the object to be detected and the temperature of the connected piece, the dimensionless conversion The ambient temperature is T ₀ , the temperature of the to-be-detected component is T ₁ , the temperature of the connected component is T ₂ , the initial temperature of the to-be-detected component is T ₁₁ , the initial temperature of the connected component is T ₂₁ , and the initial temperature of the environmental environment is T ₀₁ . The temperature rise of the test piece is ΔT ₁ =T ₁ -T ₁₁ -T ₀ +T ₀₁ , the temperature rise of the connected piece is ΔT ₂ =T ₂ -T ₂₁ -T ₀ +T ₀₁ , and the overall index of temperature rise is T _all = ΔT ₁ + ΔT ₂ , the temperature rise ratio of the to-be-detected member is R _a = ΔT ₁ /T _all , and the temperature rise ratio of the to-be-detected member is R _b = ΔT ₂ /T _all . An instant monitoring method for a feeding device as described in claim 3, wherein R _a + R _b =1. The method for monitoring the instantaneous feeding device according to the first aspect of the patent application, wherein the step (C) of obtaining a steady-state characteristic ratio value range is to obtain a temperature-increasing ratio of the to-be-detected component that is closer to stability and is stable. The temperature rise ratio of the related piece is subjected to a rate of change calculation to obtain the steady state characteristic ratio value. The method for monitoring the instantaneous feeding device according to claim 1, wherein in the step (C) of obtaining the steady-state characteristic ratio value range, the positive and negative ten percent of the steady-state characteristic proportional value is a steady-state characteristic proportional value. range. The instant monitoring method of the feeding device according to claim 1, wherein the related component is a combination of a plurality of components, and the average temperature of the plurality of components is a connected component temperature. The instant monitoring method of the feeding device according to claim 1, wherein the related component is a combination of a plurality of components, and the statistical temperature of the plurality of components is a connected component temperature.