CN-121979323-A - Automatic adjustment method and system for oil temperature of sliding table of multi-comprehensive vibration test system

CN121979323ACN 121979323 ACN121979323 ACN 121979323ACN-121979323-A

Abstract

The invention discloses a method and a system for automatically adjusting the oil temperature of a sliding table of a multi-integrated vibration test system, wherein a temperature sensor is arranged at an oil return port of the sliding table, and the upper limit and the lower limit of the proper working temperature of oil are set; dividing an ideal temperature function into intervals according to a set period after the experiment starts, calculating the temperature integral of each interval, judging the type of the interval according to the relation between the temperature integral and the upper and lower limits of the proper temperature integral and the proper temperature integral, dynamically adjusting the power of the heating or cooling device, and simultaneously carrying out secondary correction on the heating or cooling device by combining the actually measured temperature of the temperature sensor and the temperature deviation threshold value. According to the invention, the oil liquid change trend of the sliding table is prejudged in advance by utilizing an ideal temperature function in the experimental cavity, and the dynamic adjustment is carried out, so that the oil liquid temperature can be accurately controlled in a proper working range, and the adverse effect of the experimental temperature change on the operation stability and accuracy of the sliding table is eliminated.

Inventors

TANG YU
YE TENGBO
SUN WEI
FU XIAOHONG
LIU XIANBO
LU HAO
CHANG XIANGDONG
ZHU ZHENCAI
TANG JINLONG

Assignees

苏州东菱振动试验仪器有限公司
中国矿业大学

Dates

Publication Date: 20260505
Application Date: 20260212

Claims (10)

1. The automatic adjustment method for the oil temperature of the sliding table of the multi-integrated vibration test system is characterized by comprising the following steps of: Step S1, before the experiment of a multi-comprehensive vibration test system begins, arranging a temperature sensor at an oil return port of a vibration table, determining an upper limit value T Upper part and a lower limit value T Lower part(s) of proper working temperature of oil, selecting proper working temperature in a range between the upper limit value T Upper part and the lower limit value T Lower part(s) , and presetting a corresponding proper temperature integration upper limit A max , a proper temperature integration lower limit A min and a proper temperature integration A Jiajia (good) ; S2, starting a multi-comprehensive vibration test system experiment, defining an ideal temperature function T (T) of a test system experiment cavity taking time T as an independent variable and temperature T as a dependent variable, setting time Deltat 1 as a period, dividing the ideal temperature function T (T) into a plurality of sections according to the set period, and calculating the temperature integral of each section; And step S3, setting time Deltat 2 as a period, recording the actual measured temperature T i of the oil detected by the temperature sensor in each period, setting a temperature deviation threshold lambda ΔT , and carrying out temperature correction compensation on the oil in the sliding table by utilizing the actual measured temperature T i of the oil in each period and the temperature deviation threshold lambda ΔT .
2. The automatic adjustment method for the oil temperature of the sliding table of the multi-integrated vibration test system according to claim 1, wherein in the step S2, a calculation formula of the temperature integral a n in the nth interval is: Wherein T is time, min, T is temperature, °c, and the ideal temperature function T (T) is divided into a plurality of intervals with Δt 1 as one period, wherein the start time of the nth interval is (n-1) ·Δt 1 , and the end time is n·Δt 1 , n=1, 2.
3. The automatic adjustment method for the oil temperature of the sliding table of the multi-integrated vibration test system according to claim 1, wherein the calculation formula for defining the upper limit of the suitable temperature integral in the step S2 as a max ,A max is as follows: A max =T Upper part ·Δt 1 Wherein Deltat 1 is the time of one cycle, and T Upper part is the upper limit value of the proper working temperature.
4. The automatic adjustment method for the oil temperature of the sliding table of the multi-integrated vibration test system according to claim 1, wherein the calculation formula for defining the upper limit of the suitable temperature integral in the step S2 as a min ,A min is as follows: A min =T Lower part(s) ·Δt 1 Wherein Deltat 1 is the time of one cycle, and T Lower part(s) is the lower limit value of the proper working temperature.
5. The automatic adjustment method for the oil temperature of the sliding table of the multi-integrated vibration test system according to claim 1, wherein the calculation formula for defining the suitable temperature integral in the step S2 as a Jiajia (good) ,A Jiajia (good) is as follows: A Jiajia (good) =T Jiajia (good) ·Δt 1 Wherein Deltat 1 is the time of one cycle, and T Jiajia (good) is a suitable operating temperature value.
6. The automatic adjustment method for the oil temperature of the sliding table of the multi-integrated vibration test system according to claim 2, wherein each section is divided into a safe section, a cooling section and a heating section according to the value of A n 、A max 、A min : When the interval meeting the condition A min ≤A n ≤A max is a safety interval, temperature compensation is not performed in the interval; When the section satisfying the condition a n ＞A max is a cooling section, setting the cooling power of the horizontal slip temperature adjusting device to be: Wherein: The maximum cooling power of the horizontal sliding table temperature regulating device is calculated if the horizontal sliding table temperature regulating device calculates the power Setting the cooling power of the horizontal slipway temperature regulating device to be ; When the section satisfying the condition a n ＜A min is a heating section, setting the heating power of the horizontal slip temperature adjusting device to be: Wherein: Heating maximum power for the horizontal sliding table temperature regulating device, if the calculated power of the horizontal sliding table temperature regulating device Setting the heating power of the temperature regulating device to be 。
7. The automatic adjustment method for the oil temperature of the sliding table of the multi-integrated vibration test system according to claim 1, wherein the specific process of the step S3 is that the time delta T 2 is taken as a period, the measured temperature of the temperature sensor of the ith period is recorded as T i , i=1, 2,..: when the condition-lambda is satisfied ΔT ≤T i T Jiajia (good) ≤λ ΔT , the (i+1) th cycle does not need to be subjected to temperature correction; When the condition T is satisfied i T Jiajia (good) ＞λ ΔT , the cooling power of the horizontal sliding table temperature regulating device is additionally increased at the beginning of the (i+1) th period ; When the condition T is satisfied i T Jiajia (good) ＜-λ ΔT , the heating power of the horizontal sliding table temperature regulating device is additionally increased at the beginning of the (i+1) th period 。
8. The automatic adjustment method for the oil temperature of the sliding table of the multi-integrated vibration test system according to claim 1, wherein the upper limit value T Upper part of the oil suitable operating temperature is 40-50 ℃, the lower limit T Lower part(s) of the oil suitable operating temperature is 5-10 ℃, and the range T Jiajia (good) of the oil suitable operating temperature is 30-35 ℃; the value range of the period Deltat 1 is 5min-8 min, the value range of the period Deltat 2 is 15min-20 min, and the value range of the temperature deviation threshold lambda ΔT is 3min-5 min.
9. The automatic oil temperature adjusting system for the sliding table of the multi-integrated vibration test system is used for the automatic oil temperature adjusting method for the sliding table of the multi-integrated vibration test system according to claim 1 and is characterized by comprising an experiment cavity (1), a horizontal sliding table (2), an oil isolation film (3), a hydrostatic guideway (4), a temperature sensor (5), a temperature adjusting device (6) and a control unit; The horizontal sliding table (2) is arranged in the experiment cavity (1); The static pressure guide rail (4) is arranged between the horizontal sliding table (2) and the experiment cavity (1), the fixed part of the static pressure guide rail is connected with the experiment cavity (1), and the moving part of the static pressure guide rail is connected with the horizontal sliding table (2) to provide movement support and guide for the horizontal sliding table (2); The oil isolation film (3) is coated on the periphery of the hydrostatic guideway (4), and the edge of the oil isolation film (3) is respectively connected with the horizontal sliding table (2) and the experimental cavity (1) in a sealing way and is used for separating the experimental cavity (1) into an upper space and a lower space which are isolated from each other; The temperature sensor (5) is arranged at an oil return port of the horizontal sliding table (2) and is used for detecting the real-time temperature of the oil in the sliding table and transmitting a detected temperature signal to the control unit; The temperature adjusting device (6) comprises a heating device and a cooling device, and the heating device and the cooling device are arranged on the inner wall of the periphery of the experiment cavity (1) below the horizontal sliding table (2) and are used for receiving control signals of the control unit and heating or cooling and adjusting oil liquid of the horizontal sliding table (2); the control unit is electrically connected with the temperature sensor (5) and the temperature regulating device (6), integrates the oil temperature automatic regulating method inside the control unit, is used for receiving the temperature signal transmitted by the temperature sensor, calculating to obtain real-time regulating power, and sending a corresponding control signal to the heating device or the cooling device.
10. The automatic oil temperature adjusting system for the sliding table of the multi-integrated vibration test system according to claim 9, wherein the heating device is a heating pipe or a resistance wire, and the cooling device is a condensing pipe, an air cooling unit or a water cooling unit.

Description

Automatic adjustment method and system for oil temperature of sliding table of multi-comprehensive vibration test system Technical Field The invention relates to the technical field of vibration test equipment, in particular to an automatic adjustment method and an automatic adjustment system for oil temperature of a sliding table of a multi-comprehensive vibration test system. Background The multi-comprehensive vibration test system is widely applied to the fields of aerospace, automobile manufacturing, electronic equipment and the like, is used for simulating the vibration tolerance performance of a product in a complex environment, and the running stability of a horizontal sliding table of a core working part directly determines the reliability of test data. In the operation process of the sliding table, oil is used as a lubricating and transmission medium, the viscosity, the lubricating effect and the transmission precision of equipment of the oil are obviously affected by the temperature change, the oil is easy to deteriorate and lubricate and lose efficacy due to the fact that the temperature is too high, the abrasion of parts is aggravated, the flowing resistance of the oil is increased due to the fact that the temperature is too low, and the operation flexibility of the sliding table is affected. The existing vibration test system adopts a single threshold trigger mode for controlling the oil temperature of the sliding table, lacks of pre-judging and sectionally accurate regulation and control of the temperature change trend, does not combine a dual calibration mechanism of reasonable ideal temperature function and actual measurement feedback, and has the problems of lag in temperature regulation, poor regulation effect and low adaptability. When the fluctuation of the test environment temperature of the multi-comprehensive vibration test system is large or the test working condition is complex, the traditional control mode is difficult to maintain the oil in a proper working temperature range, the test interruption or the test data distortion is easy to cause, and the requirements of high-precision and long-time continuous vibration test cannot be met. Disclosure of Invention In order to overcome the technical defects, the application adopts the following technical scheme: In a first aspect, the application provides a method for automatically adjusting the oil temperature of a sliding table of a multi-integrated vibration test system, which comprises the following steps: Step S1, before the experiment of the multi-comprehensive vibration test system begins, arranging a temperature sensor at an oil return port of a vibration table to determine oil The upper limit value T Upper part and the lower limit value T Lower part(s) of the suitable working temperature, selecting the suitable working temperature in the upper limit value T Upper part and the lower limit value T Lower part(s) , and presetting a corresponding upper limit of suitable temperature integration, a corresponding lower limit of suitable temperature integration and a corresponding suitable temperature integration; S2, starting a multi-comprehensive vibration test system experiment, and defining a test with time T as an independent variable and temperature T as a dependent variable An ideal temperature function T (T) of an experimental cavity of the experimental system; setting time Deltat 1 as a period, dividing an ideal temperature function T (T) into a plurality of sections according to the set period, and calculating the temperature integral of each section; comparing the temperature integral of each section with the upper limit, the lower limit and the temperature integral preset in the step S1, judging the section type, and dynamically adjusting the power of the temperature adjusting device of the horizontal sliding table according to the section type; And step S3, setting time Deltat 2 as a period, recording the actual measured temperature T i of the oil detected by the temperature sensor in each period, setting a temperature deviation threshold lambda ΔT, and carrying out temperature correction compensation on the oil in the sliding table by utilizing the actual measured temperature T i of the oil in each period and the temperature deviation threshold lambda ΔT. Therefore, the embodiment of the application constructs the oil temperature regulating logic of the pre-set parameter before test, integral feedforward regulation in test and actual measurement feedback correction after test, so that the oil can be stably in a proper working range, the vibration test precision is prevented from being influenced by the abnormal oil temperature, and the continuous and stable operation of the sliding table is ensured. In some embodiments of the first aspect, in the step S2, a calculation formula of the temperature integral a n in the nth interval is: Wherein T is time, min, T is temperature, °c, and the ideal temperature function T (T) i