CN-119958710-B - Temperature detection method and system for double-layer driving coil of high-thrust vibrating table

CN119958710BCN 119958710 BCN119958710 BCN 119958710BCN-119958710-B

Abstract

The invention discloses a temperature detection method and a temperature detection system for a double-layer driving coil of a high-thrust vibrating table, which are characterized in that thermocouple temperature sensors are arranged at different positions of the inner layer and the outer layer of the double-layer driving coil and collect temperature data of each point in real time, and the temperature of each position on the inner layer driving coil is estimated by comparing the temperature change slope of each position on the inner layer driving coil with the temperature change slope of the starting point position and adopting fitting functions of fixed slopes and change slopes respectively. On the basis, the difference of the inner layer temperature performance and the outer layer temperature performance is further judged through the temperature of the water outlet on the outer layer driving coil, the outer layer temperature distribution condition is subjected to differential correction according to the inner layer and outer layer difference condition, and the temperature distribution of the outer layer driving coil is obtained by combining the temperature distribution condition of the inner layer driving coil. The invention has simple structure, can comprehensively and accurately detect the temperature change condition of the double-layer driving coil of the high-thrust vibrating table on line in real time, effectively master the running state of the moving coil of the high-thrust vibrating table and prolong the service life of the moving coil of the vibrating table.

Inventors

TANG YU
ZHU ZHENCAI
MA CHENGXIANG
YAN BO
YE TENGBO
FU XIAOHONG
SHEN GANG
LU HAO
PENG YUXING
CHANG XIANGDONG

Assignees

中国矿业大学

Dates

Publication Date: 20260508
Application Date: 20250206

Claims (10)

1. The temperature detection method of the double-layer driving coil of the high-thrust vibrating table is characterized by comprising the following steps of: s1, sequentially arranging water inlets below the inner layer driving coils as starting points along the winding direction of the inner layer coils The temperature sensors are numbered sequentially, and the 1 st temperature sensor is positioned at the water inlet below the inner layer driving coil and is the 1 st temperature sensor The temperature sensor is positioned at the water outlet of the inner layer driving coil and marks the first place The angular coordinate of each temperature sensor rotated along the winding direction of the inner layer driving coil relative to the starting point of the inner layer driving coil is Record the first The measured value of each temperature sensor is Wherein ; The water inlet below the outer layer driving coil is taken as a starting point, a temperature sensor is arranged at the water inlet below the outer layer driving coil and is marked as the first A temperature sensor arranged at the water outlet of the outer driving coil and marked as the first one Temperature sensor, the first Temperature sensor, first The angular coordinates of the temperature sensor relative to the starting point of the outer driving coil along the winding direction of the outer coil are respectively recorded as And First, the Temperature sensor, first The measured values of the temperature sensors are respectively recorded as And ; S2, calculating the temperature change slope of the measured values of different temperature sensors relative to the measured value of the 1 st temperature sensor by using the measured values of the temperature sensors of the inner layer driving coil, and the 1 st temperature sensor Slope of temperature change of temperature sensor with respect to 1 st temperature sensor The calculation formula of (2) is as follows: Wherein: ; calculating the maximum value of the slope of the temperature change Minimum value of slope of temperature change The calculation formula is as follows: , s3, estimating the temperature distribution condition of the inner layer driving coil from the water inlet to the water outlet below Wherein: Indicating the angular coordinate rotated from the start point of the inner layer driving coil in the winding direction of the inner layer coil, Representing angular coordinates The temperature value of the inner layer driving coil corresponding to the position is recorded To allow for slope error of temperature change according to Is used for the value range of the (a), The estimation process of (2) is divided into two cases: If it is Combining the numerical value measured by the inner layer driving coil temperature sensor, adopting a linear function fit estimation with a fixed slope to obtain ; If it is Combining the numerical value measured by the inner layer driving coil temperature sensor, adopting a linear function fitting estimation of which the slope is continuously changed along with the angle coordinate rotated by the winding direction of the inner layer coil to obtain ; S4, obtaining the temperature distribution condition of the inner layer driving coil from the lower water inlet to the upper water inlet by utilizing the symmetry of the water inlet structures at the two ends and the water outlet structure in the middle The expression is: , s5, recording the temperature distribution condition of the outer layer driving coil from the lower water inlet to the upper water inlet as Wherein: Indicating the angular coordinate rotated from the start point of the outer driving coil in the winding direction of the outer coil, Representing angular coordinates The corresponding temperature value of the outer driving coil is recorded Is a low temperature difference threshold value, and is based on the measured value of the temperature at the water outlet of the outer driving coil And a temperature measurement at the water outlet of the inner layer drive coil Pairs of relationships between The estimation is carried out in two cases: If it is The temperature distribution condition of the inner layer driving coil from the lower water inlet to the upper water inlet is adopted to approximately replace the temperature distribution condition of the outer layer driving coil, namely ; If it is Adopts random Correction function of variation Correcting the temperature distribution of the inner layer driving coil to obtain the temperature distribution of the outer layer driving coil, namely 。
2. The method for detecting the temperature of a double-layer driving coil of a high thrust vibrating table according to claim 1, wherein in step S3, when During the time, the inner layer driving coil is distributed from the lower water inlet to the water outlet The expression of (2) is Wherein: is the reference temperature value and , Driving the coils for the inner layer at different angular coordinates A slope function of the temperature change with respect to the 1 st temperature sensor, By passing through Is composed of And linearly fitting the data sequence of the angle coordinate-temperature change slope to obtain the temperature sensor.
3. The method for detecting the temperature of the double-layer driving coil of the high-thrust vibrating table according to claim 1, wherein in step S5, the temperature is detected as follows Correction function of variation The calculation process of (1) comprises the following steps: S51, record A first temperature ratio of, In the case of the second temperature ratio value, And The calculation formula of (2) is , S52, definition Is a high temperature difference threshold value according to And (3) with The relationship between values is divided into two cases: If it is Along with Correction function of variation ; If it is Along with Correction function of variation 。
4. The method for detecting the temperature of the double-layer driving coil of the high-thrust vibrating table according to claim 1, wherein the temperature sensor is a thermocouple temperature sensor.
5. The method for detecting the temperature of the double-layer driving coil of the high-thrust vibrating table according to claim 1, wherein the inner-layer driving coil is provided with The temperature sensors are equidistantly arranged.
6. The method for detecting the temperature of the double-layer driving coil of the high-thrust vibrating table according to claim 1, wherein the number of the temperature sensors arranged on the inner-layer driving coil is as follows The range of the values is as follows 。
7. The method for detecting the temperature of the double-layer driving coil of the high-thrust vibrating table according to claim 1, wherein the allowable temperature change slope error is The range of the values is as follows 。
8. The method for detecting the temperature of the double-layer driving coil of the high-thrust vibrating table according to claim 1, wherein the low-temperature-difference threshold value The value range of the temperature sensor is 10-20 ℃.
9. The method for detecting the temperature of the double-layer driving coil of the high-thrust vibrating table according to claim 3, wherein the high-temperature-difference threshold value The value range of the temperature sensor is 50-70 ℃.
10. A temperature detection system of a double-layer driving coil of a high-thrust vibrating table comprises an inner-layer driving coil and an outer-layer driving coil, wherein water is fed from two ends and discharged from the middle, and the inner-layer driving coil is sequentially arranged by taking a water inlet below the inner-layer driving coil as a starting point and a water outlet in the middle as an ending point The temperature sensor is respectively arranged at the water inlet below the outer driving coil and the water outlet in the middle, and a plurality of the temperature sensors are respectively electrically connected with an external control processing module through data wires.

Description

Temperature detection method and system for double-layer driving coil of high-thrust vibrating table Technical Field The invention relates to the technical field of vibrating tables, in particular to a temperature detection method and system for a double-layer driving coil of a high-thrust vibrating table. Background In the electric vibrating table device, the double-layer driving coil has certain application because of the advantages of large output, reduced power amplifier driving voltage and the like. The driving coil consists of an inner layer coil and an outer layer coil, and the structure can increase the number of turns and inductance of the coils in a limited space, so that the magnetic field intensity is improved, stronger driving force is provided for the vibrating table, and larger vibration acceleration is generated. Because the drive coil generates heat during operation, excessive temperatures can affect the performance and life of the coil, and even cause equipment failure. Therefore, the temperature of the inner layer coil and the outer layer coil needs to be monitored in real time so as to discover temperature abnormality in time and take corresponding heat dissipation measures. But there are several disadvantages in the temperature monitoring of the dual layer drive coil: 1. Most of the existing temperature monitoring technologies only can acquire temperature information of local positions of the coils, and cannot well reflect temperature distribution conditions of the whole double-layer driving coil. Especially in the case of local overheating, these local high temperature points may be ignored, resulting in an erroneous determination of the temperature state of the coil. 2. Because of the complexity of the double-layer driving coil structure, the inner layer driving coil and the outer layer driving coil have different temperatures due to heat dissipation factors, and the existing temperature monitoring technology is difficult to capture the temperature difference, so that effective temperature monitoring cannot be realized at the same time. Disclosure of Invention Aiming at the technical problems, the invention provides a temperature detection method and a temperature detection system for a double-layer driving coil of a high-thrust vibrating table, and the method can better obtain the overall temperature condition of the double-layer driving coil, so that the working state of the coil can be accurately estimated. In order to achieve the technical purpose, the invention adopts the following technical scheme: A temperature detection method of a double-layer driving coil of a high-thrust vibrating table, wherein the inner layer and the outer layer of the double-layer driving coil adopt cooling structures with water inlet at two ends and water outlet in the middle, and the method comprises the following steps: S1, taking a water inlet below an inner layer driving coil as a starting point, sequentially arranging n temperature sensors along the winding direction of the inner layer coil and numbering the n temperature sensors in sequence, wherein the 1 st temperature sensor is positioned at the water inlet below the inner layer driving coil, the n temperature sensor is positioned at a water outlet of the inner layer driving coil, the angle coordinate of the i temperature sensor rotated along the winding direction relative to the starting point of the inner layer driving coil is alpha i, and the measured value of the i temperature sensor is T i, wherein i=1, 2, L and n; taking a water inlet below the outer layer driving coil as a starting point, arranging a temperature sensor at the water inlet below the outer layer driving coil and marking the temperature sensor as an n+1th temperature sensor, arranging a temperature sensor at a water outlet of the outer layer driving coil and marking the temperature sensor as an n+2th temperature sensor, respectively marking the angle coordinates of the n+1th temperature sensor and the n+2th temperature sensor rotated along the winding direction of the outer layer coil relative to the starting point of the outer layer driving coil as alpha n+1 and alpha n+2, and marking the measured values of the n+1th temperature sensor and the n+2th temperature sensor as T n+1 and T n+2; S2, calculating the temperature change slope of the measured values of different temperature sensors relative to the measured value of the 1 st temperature sensor by using the measured value of the inner layer driving coil, wherein the calculation formula of the temperature change slope k j of the j-th temperature sensor relative to the 1 st temperature sensor is as follows: wherein j=2, 3, l, n; The maximum value k max and the minimum value k min of the temperature change slope are calculated, and the calculation formula is as follows: S3, estimating temperature distribution T (alpha) between a water inlet and a water outlet of the inner layer driving coil from the lower side, wherein alpha