Water-cooling system and method for high-voltage power amplifiers of high-thrust shaker

Abstract

Disclosed in the present invention are a water-cooling system and method for high-voltage power amplifiers of a high-thrust shaker. The system comprises a control unit and a plurality of power cabinets, wherein a proportional throttle valve, a plurality of sets of flow divider-combiner valves and a plurality of water-cooling heat dissipation plates are provided inside each power cabinet; cooling water enters each power cabinet through a main water inlet, flows through the proportional throttle valves and the flow divider-combiner valves, then enters the water-cooling heat dissipation plates and flows out through a water outlet after absorbing heat from power amplifiers placed on two side faces; and pipes arranged in the water-cooling heat dissipation plates are denser in the middle and sparser at the upper and lower portions, such that specific heat dissipation is performed on the power amplifiers. The control unit uses temperature information at the water inlet and the water outlet, and then controls the voltage of the proportional throttle valves, so as to adjust the flow rate of the cooling water, such that heat dissipation and cooling can be performed on the power amplifiers more accurately.

Description

Water cooling system and method for high-pressure power amplifier of large-thrust vibration table TECHNICAL FIELD

[0001] The present application relates to the field of vibration table cooling technology, in particular to a water cooling system and method for high-pressure power amplifier of large-thrust vibration table. BACKGROUND

[0002] The electric vibration table is mainly used for simulating the actual vibration environment of the test piece, and then testing the actual working performance of the test piece. Due to the rapid development of science and technology, the thrust requirement of the vibration table is gradually increasing. In order to meet the needs of the large-thrust vibration table, the requirements for the high-pressure power amplifier of the vibration table are also increasing. However, the temperature of the high-pressure power amplifier will rise during the working process, which will affect the normal working performance. Therefore, the heat dissipation of the high-pressure power amplifier becomes particularly important. In the prior art, the following shortcomings and deficiencies exist when cooling the high-pressure power amplifier:

[0003] (1) At present, the high-pressure power amplifier cooling mainly adopts air cooling heat dissipation device, and water cooling heat dissipation device is rarely used, but the air cooling heat dissipation efficiency is low, and the heat dissipation effect of the high-pressure power amplifier cooling is not ideal;

[0004] (2) In the existing high-pressure power amplifier water cooling heat dissipation device, the water cooling pipe in the water cooling heat dissipation plate usually adopts a uniform distribution mode, without considering the heating characteristics of the high-pressure power amplifier, resulting in uneven distribution of cooling water, and poor heat dissipation effect of the high-pressure power amplifier;

[0005] (3) In the existing high-pressure power amplifier water cooling heat dissipation device, the flow of cooling water of each water cooling heat dissipation plate caused by the different lengths of the cooling water pipe is not uniform, which further leads to the poor heat dissipation of the high-pressure power amplifier;

[0006] (4) In the existing high-pressure power amplifier water cooling heat dissipation device, the cooling water between each power cabinet is provided by pipes with the same diameter, but in practice, the power amplifiers in each power cabinet inevitably have different heating capacities due to the differences in working performance, resulting in differences in operating temperature of each power cabinet. Using the same pipe to provide cooling water will cause differences in cooling performance of each power cabinet, and the temperature consistency is poor.

[0007] SUMMARY

[0008] In order to overcome the defects in the prior art, the present application provides a water cooling system and method for high-pressure power amplifier of large-thrust vibration table.

[0009] The technical scheme adopted by the present application is as follows: in the first aspect, the present application provides a high-pressure power amplifier water cooling system of a large-thrust vibration table, comprising: water cooling radiating plates, at least one water cooling radiating plate is arranged in each power cabinet, and power amplifiers are arranged on both sides of the water cooling radiating plate; the water cooling radiating plate is provided with a water inlet and at least one water outlet, the pipeline between the water inlet and the water outlet is continuously bent and forms a distribution with a dense middle part and sparse upper and lower parts on the water cooling radiating plate; a proportional throttling valve is arranged in each power cabinet and is used for controlling the cooling water inflow; a temperature sensor is arranged at the cooling water total inlet and the cooling water outlet of each power cabinet and is used for detecting the cooling water inlet temperature and the cooling water outlet temperature of each power cabinet; and a control unit is used for collecting the cooling water temperature information of the temperature sensor and the proportional throttling valve control voltage information to dynamically adjust the cooling water flow of each power cabinet.

[0010] As a further improvement of the present application, when the water cooling radiating plate in each power cabinet is more than two, a shunt and collecting valve is arranged in the power cabinet, so that the cooling water flow in each water cooling radiating plate is the same.

[0011] As a further improvement of the present application, the water cooling radiating plate is a cuboid structure, a cooling water inlet is arranged in the middle of one end, and one water outlet is arranged at each of the upper end and the lower end.

[0012] As a further improvement of the present application, one proportional throttling valve is arranged in each power cabinet, one end of the proportional throttling valve is connected with the cooling water total inlet, the other end of the proportional throttling valve is connected with the shunt and collecting valve, and the shunt and collecting valve is connected with the water inlet of the water cooling radiating plate.

[0013] As a further improvement of the present application, four water cooling radiating plates are arranged in each power cabinet, and two power amplifiers are arranged on both sides of each water cooling radiating plate.

[0014] As a further improvement of the present application, three shunt and collecting valves are arranged in each power cabinet, the three shunt and collecting valves are used in combination, the cooling water is divided into four equal paths, and the cooling water flow in the four water cooling radiating plates is the same.

[0015] In the second aspect, the present application further provides a high-pressure power amplifier water cooling working method of a large-thrust vibration table, comprising the following steps:

[0016] Step S1, an initial value of a proportional throttling valve control voltage in each power cabinet is set, and the maximum control voltage of the proportional throttling valve is denoted as u max The initial value of the control voltage of the proportional throttling valve in each power cabinet is set as u0=βu max Wherein, β represents a control voltage proportional coefficient of the proportional throttling valve, and the value range is 0.6-0.7;

[0017] Step S2, when the water cooling system starts to work, the outlet temperature of cooling water and the control voltage of proportional throttle valve are collected, the average value of outlet temperature of cooling water, temperature difference, normalized temperature difference value and relative error are calculated;

[0018] Step S3, when the water cooling system starts to work, the control voltage of proportional throttle valve in each power cabinet is corrected every t time to adjust the flow of cooling water.

[0019] As a further improvement of the present application, in step S2, the method for calculating the average value of outlet temperature of cooling water, temperature difference, normalized temperature difference value and relative error is specifically:

[0020] Step S21, assuming that there are n power cabinets, the outlet temperature of cooling water in each power cabinet is collected every t time when the water cooling system starts to work, and the outlet temperature sequence of cooling water is formed Wherein, t represents time interval, T out,i (k) represents the outlet temperature of cooling water collected for the kth time in the ith power cabinet, the value of i is 1, 2,..., n, the value of k is k≥ and k is an integer; the value range of t is 5 minutes-10 minutes;

[0021] Step S22, the control voltage of proportional throttle valve in each power cabinet is collected every t time when the water cooling system starts to work, and the control voltage of proportional throttle valve collected for the kth time in the ith power cabinet is recorded as u i (k);

[0022] Step S23, the average value of outlet temperature of cooling water collected for the kth time is calculated The specific calculation steps are: according to the outlet temperature sequence of cooling water Remove the maximum value and the minimum value in Calculate the average value of the remaining n-2 outlet temperatures of cooling water

[0023] Step S24, define the outlet temperature difference sequence of cooling water as Wherein, ΔT i (k) represents the absolute value of the difference between the kth collected outlet temperature of cooling water in the ith power cabinet and the average value of the kth collected outlet temperature of cooling water, ΔT i The calculation formula of ΔT

[0024] Step S25, define the normalized outlet temperature difference sequence of cooling water as Wherein, ΔT nor，i (k) represents the normalized value of ΔT i (k), ΔT nor，iThe calculation formula of (k) is

[0025] wherein a represents the lower limit of the normalization interval and a≥1, b represents the upper limit of the normalization interval and a max and ΔT min respectively represent the maximum value and the minimum value in .

[0026] Step S26, defining the cooling water outlet temperature relative error sequence wherein δ i (k) represents the cooling water outlet temperature relative error of the i-th power cabinet collected for the k-th time, δ i The calculation formula of (k) is

[0027] As a further improvement of the present application, in step S3, the control voltage of the proportional throttle valve in each power cabinet is corrected every t time to adjust the cooling water flow, and the specific method is as follows: taking the correction of the control voltage of the proportional throttle valve in the i-th power cabinet for the k-th time as an example, and denoting the corrected control voltage of the proportional throttle valve as According to the size of δ i (k), the correction method of the control voltage of the proportional throttle valve is divided into four categories, and the specific classification is as follows:

[0028] The first category, if |δ i (k)|≤η1, wherein η1 is the lower limit of the cooling water outlet temperature relative error threshold and η1>0, then the control voltage of the proportional throttle valve is not corrected;

[0029] The second category: if η1<δ i (k)≤η2 or -η2≤δ i (k)<-η1, wherein η2 is the intermediate threshold of the cooling water outlet temperature relative error and η2>0, then the control voltage of the proportional throttle valve needs to be corrected, when η1<δ k (k)≤η2, the corrected control voltage of the proportional throttle valve is wherein k is a proportional coefficient; when -η2≤δ i (k)<-η1, the corrected control voltage of the proportional throttle valve is

[0030] The third category, if η2<δ i (k)≤η3 or -η3≤δ i (k)<-η2, wherein η3 is the upper limit of the cooling water outlet temperature relative error threshold and η3>0, then the control voltage of the proportional throttle valve needs to be corrected, when η2<δ i (k)≤η3, the corrected control voltage of the proportional throttle valve is When -η3≤δ i (k)<-η2, the control voltage of the proportional throttle valve after correction is

[0031] The fourth type, if |δ i (k)>η3, the control voltage of the proportional throttle valve after correction is needed, when δ i (k)>η3, the control voltage of the proportional throttle valve after correction is When δ i (k)<-η3, the control voltage of the proportional throttle valve after correction is

[0032] Compared with the prior art, the beneficial effects of the present application are:

[0033] (1) The present application designs a water cooling heat sink with dense water path in the middle and sparse water path on both sides according to the heat characteristics of different parts of the power amplifier, which can effectively cool the power amplifier;

[0034] (2) Each power cabinet is provided with a proportional throttle valve, and the flow is synchronously controlled by the shunt valve between each water cooling heat sink, which can effectively ensure that the flow in each water cooling heat sink in each power cabinet is uniform, so as to ensure the cooling effect of each water cooling heat sink;

[0035] (3) Different correction amounts are taken for the control voltage of the proportional throttle valve according to the different relative errors of the cooling water temperature, which can effectively improve the cooling effect of the power amplifier. When the relative error of the cooling water temperature is small, the control voltage of the proportional throttle valve is not corrected, when the relative error of the cooling water temperature is medium, the control voltage of the proportional throttle valve is increased by a linear correction amount of the outlet temperature difference of the cooling water, when the relative error of the cooling water temperature is large, the control voltage of the proportional throttle valve is increased by a square correction amount of the outlet temperature difference of the cooling water, and when the relative error of the cooling water temperature is very large, the control voltage of the proportional throttle valve is increased by a cubic correction amount of the outlet temperature difference of the cooling water. BRIEF DESCRIPTION OF DRAWINGS

[0036] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0037] Fig. 1 is a block diagram of the high-pressure power amplifier water cooling system of the large-thrust vibration table of the present application;

[0038] Fig. 2 is a structure diagram of the water cooling heat sink of the present application;

[0039] Fig. 3 is a three-dimensional structure diagram of the water cooling heat sink of the present application;

[0040] Fig. 4 is a control voltage correction strategy logic diagram of the proportional throttle valve of the present application;

[0041] In the figure, 1 is a water-cooled heat sink, 2 is a power amplifier, 3 is a proportional throttle valve, 4 is a shunt valve, 5 is a temperature sensor, 6 is a control unit, 7 is a total cooling water inlet, 8 is a cooling water inlet, 9 is a cooling water outlet, 10 is a total cooling water outlet, 11 is a power cabinet, and 12 is a plug. DETAILED DESCRIPTION

[0042] Referring to FIG. 1, a high-pressure power amplifier water-cooling system of a large-thrust vibration table includes a water-cooled heat sink 1, a power cabinet 11, a proportional throttle valve 3, a shunt valve 4, a temperature sensor 5, and a control unit 6. The system is provided with three power cabinets 11 and one control unit 6. Each power cabinet 11 is provided with one proportional throttle valve 3, three shunt valves 4, and four water-cooled heat sinks 1. A temperature sensor 5 is arranged on a pipeline near the total cooling water inlet 7, and a temperature sensor 5 is arranged at the cooling water outlet of each water-cooled heat sink 1. The cooling water flow path is as follows: the cooling water is divided into three power cabinets 11 from the total cooling water inlet, and then enters the proportional throttle valve 3 in each power cabinet 11, and then enters the shunt valve 4. The shunt valve is divided into four paths to enter the inside of each water-cooled heat sink 1. After absorbing the heat of the power amplifier 2, the cooling water flows out from the cooling water outlet, and then flows into a pipeline to flow out from the total cooling water outlet 10. Regarding the control part, the proportional throttle valve 3 in each power cabinet 10 is electrically connected with the control unit 6, and all the temperature sensors 5 are electrically connected with the control unit 6.

[0043] Referring to FIG. 2 and FIG. 3, the specific structure of the water-cooled heat sink 1 of the present application is as follows: the water-cooled heat sink 1 is a cuboid structure and is vertically placed in the power cabinet 10. Two power amplifiers 2 are arranged on each side of the water-cooled heat sink 1. One cooling water inlet 8 is arranged at the middle of one end of the water-cooled heat sink 1, and one cooling water outlet 9 is arranged at the distal end of the upper side and the lower side. The cooling water enters the middle pipeline from the cooling water inlet 8 and is then divided into two paths, one upward and one downward. The two pipelines are continuously bent and finally reach the upper and lower cooling water outlets 9. The other outlets are sealed with plugs 12. The two pipelines are relatively dense at the middle of the plate and gradually become sparse before reaching the cooling water outlets. The sparse and dense distribution of the above-mentioned pipelines is mainly considered according to the arrangement of the electrical elements in the power amplifier, so that the electrical element arrangement dense area can be more targetedly matched with the pipeline dense area, and the heat dissipation effect of the power amplifier is better.

[0044] The control unit 6 is electrically connected with the proportional throttle valve 3 and can collect the proportional adjustment voltage. The control unit 6 is electrically connected with the temperature sensor and can collect the water temperature at the total cooling water inlet 7 and the water temperature after the power amplifier 2 absorbs the heat of all the water-cooled heat sinks 1 in each power cabinet 11.

[0045] In order to realize the accurate heat dissipation of the power amplifier, the control unit 6 needs to adjust the proportional throttle valve 3 in real time combined with the temperature information of the temperature sensor 5. The high-pressure power amplifier water cooling working method of the large thrust vibration table provided by the application can realize the above-mentioned accurate control, please refer to figure 4, the working method specifically includes the following steps:

[0046] Step S1, the initial value of the proportional throttle valve control voltage in each power cabinet is set, the specific steps are as follows: the maximum control voltage of the proportional throttle valve is u max The initial value of the control voltage of the proportional throttle valve in each power cabinet is set to u0=βu max Wherein: β represents the control voltage proportional coefficient of the proportional throttle valve, the value range of β is 0.6-0.7.

[0047] Step S2, when the water cooling system starts to work, the cooling water outlet temperature and the control voltage of the proportional throttle valve are collected, the average value of the cooling water outlet temperature, the temperature difference, the normalized temperature difference value and the relative error are calculated, the specific steps are as follows:

[0048] (1), record n power cabinets, when the water cooling system starts to work, collect the cooling water outlet temperature of each power cabinet every t time, form the cooling water outlet temperature sequence Wherein: t represents the time interval, the value range of t is 5-10 minutes, T out,i (k) represents the cooling water outlet temperature collected for the first time in the i-th power cabinet, the value of i is 1, 2…n, and the value of k is k≥1 and k is an integer;

[0049] (2), when the water cooling system starts to work, collect the control voltage of the proportional throttle valve in each power cabinet every t time, record the control voltage of the proportional throttle valve collected for the first time in the i-th power cabinet as u i (k);

[0050] (3), calculate the average value of the cooling water outlet temperature collected for the first time The specific calculation steps are: according to the cooling water outlet temperature sequence Remove the maximum value and the minimum value in Calculate the average value of the remaining n-2 cooling water outlet temperatures

[0051] (4), define the cooling water outlet temperature difference sequence as Wherein: ΔT i (k) represents the absolute value of the difference between the cooling water outlet temperature collected for the first time in the i-th power cabinet and the average value of the cooling water outlet temperature collected for the first time, ΔT i The calculation formula of ΔT

[0052] (5), define the normalized sequence of cooling water outlet temperature difference as wherein: ΔT nor，i (k) represents the value of ΔT i (k) after normalization, and the calculation formula of ΔT nor，i (k) is wherein: a represents the lower limit of the normalization interval and a≥1, b represents the upper limit of the normalization interval and a max and ΔT min respectively represent the maximum value and the minimum value in .

[0053] (6), define the sequence of cooling water outlet temperature relative error as wherein: δ i (k) represents the cooling water outlet temperature relative error of the i-th power cabinet collected for the k-th time, and δ i (k) is the calculation formula of δ

[0054] Step S3, when the water cooling system starts to work, the control voltage of the proportional throttle valve in each power cabinet is corrected every t time to adjust the cooling water flow. Taking the correction of the control voltage of the proportional throttle valve in the i-th power cabinet for the k-th time as an example, the specific steps are as follows: let the corrected control voltage of the proportional throttle valve be According to the size of δ i (k), the correction method of the control voltage of the proportional throttle valve is divided into four categories, and the specific classification is as follows:

[0055] The first type: if |δ i (k)|≤η1, wherein: η1 is the lower limit of the cooling water outlet temperature relative error threshold and η1>0, and the value range of η1 is 0.1-0.15, then the control voltage of the proportional throttle valve is not corrected.

[0056] The second type: if η1<δ i (k)≤η2 or -η2≤δ i (k)<-η1, wherein: η2 is the intermediate threshold of the cooling water outlet temperature relative error and η2>0, and the value range of η2 is 0.2-0.25, then the control voltage of the proportional throttle valve needs to be corrected. When η1<δ i (k)≤η2, the corrected control voltage of the proportional throttle valve is wherein: k is a proportional coefficient, and the value range of k is 0.8-0.85. When -η2≤δ i (k)<-η1, the corrected control voltage of the proportional throttle valve is

[0057] The third type: if η2 < δ i (k) ≤ η3 or -η3 ≤ δ i (k) < -η2, wherein: η3 is an upper limit of the relative error threshold of the cooling water outlet temperature and η3 > 0, the value range of η3 is 0.3-0.35, and the control voltage of the proportional throttle valve needs to be corrected when η2 < δ i (k) ≤ η3, the control voltage of the proportional throttle valve after correction is When -η3 ≤ δ i (k) < -η2, the control voltage of the proportional throttle valve after correction is

[0058] The fourth type: if |δ i (k) | > η3, the control voltage of the proportional throttle valve needs to be corrected when δ i (k) > η3, the control voltage of the proportional throttle valve after correction is When δ i (k) < -η3, the control voltage of the proportional throttle valve after correction is

[0059] The cooling working method of the application can maximize the optimal cooling effect of each power cabinet by collecting the cooling water outlet temperature of each power cabinet in real time, collecting the control voltage of the proportional throttle valve of each power cabinet in real time, and dynamically adjusting the heat dissipation state of the power amplifier in each power cabinet in real time.

[0060] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application, which are all within the protection scope of the claims of the application.

Claims

1. A large-thrust vibration table high-voltage power amplifier water cooling system, characterized in that, The application relates to a water-cooling system for power amplifiers, which comprises the following components: water-cooling radiators, at least one of which is arranged in each power cabinet, and power amplifiers are arranged on both sides of the water-cooling radiators; the water-cooling radiators are provided with an inlet and at least one outlet, the pipeline between the inlet and the outlet is continuously bent and forms a distribution with a dense middle part and sparse upper and lower parts on the water-cooling radiators; proportional throttling valves arranged in each power cabinet for controlling the water inflow of the cooling water; temperature sensors arranged at the total water inlet of the cooling water and the water outlet of the cooling water of each power cabinet for detecting the temperature of the water inlet of the cooling water and the temperature of the water outlet of the cooling water of each power cabinet; a control unit for collecting the temperature information of the cooling water of the temperature sensors and the control voltage information of the proportional throttling valves to dynamically adjust the water flow of the cooling water of each power cabinet.

2. The high-power amplifier water cooling system for large thrust vibration table according to claim 1, characterized in that, When the water-cooling radiators in each power cabinet are more than two, a shunt and collecting valve is arranged in the power cabinet to make the water flow of the cooling water in each water-cooling radiator the same.

3. The high-power amplifier water cooling system for large thrust shaker according to claim 1, characterized in that, The water-cooling radiators are cuboids, one end of which is provided with a water inlet of the cooling water, and one outlet is arranged at the upper end and the lower end.

4. The high-power amplifier water cooling system for large thrust vibration table of claim 2, wherein, One proportional throttling valve is arranged in each power cabinet, one end of the proportional throttling valve is connected with the total water inlet of the cooling water, the other end is connected with the shunt and collecting valve, and the shunt and collecting valve is connected with the water inlet of the water-cooling radiator.

5. The high-power amplifier water-cooling system for large thrust vibration table of claim 1, wherein, Four water-cooling radiators are arranged in each power cabinet, and two power amplifiers are arranged on both sides of each water-cooling radiator.

6. The high-power amplifier water-cooling system for large thrust vibration table according to claim 5, characterized in that, Three shunt and collecting valves are arranged in each power cabinet, the three shunt and collecting valves are combined to divide the cooling water into four equal parts, and the water flow of the cooling water in the four water-cooling radiators is the same.

7. A large-thrust vibration table high-voltage power amplifier water cooling working method based on the large-thrust vibration table high-voltage power amplifier water cooling system in any one of claims 1-6, characterized in that, The application further relates to a method for controlling the water-cooling system for power amplifiers, which comprises the following steps: Step S1, set the initial value of the proportional throttle valve control voltage in each power cabinet, and record the maximum control voltage of the proportional throttle valve as u max The initial value of the control voltage of the proportional throttle valve in each power cabinet is set to u0=βu max Wherein, β represents the control voltage proportional coefficient of the proportional throttle valve; step S2: when the water-cooling system starts to work, the temperature of the water outlet of the cooling water of each power cabinet and the control voltage of the proportional throttling valve are collected, the average value, the temperature difference, the normalized temperature difference value and the relative error of the temperature of the water outlet of the cooling water are calculated; step S3: when the water-cooling system starts to work, the control voltage of the proportional throttling valve in each power cabinet is corrected every t time to adjust the water flow of the cooling water.

8. The water-cooling working method of the large-thrust vibration table high-pressure power amplifier according to claim 7, characterized in that, In step S2, the average value, the temperature difference, the normalized temperature difference value and the relative error of the temperature of the water outlet of the cooling water are calculated, and the specific steps are as follows: Step S21, assuming that there are n power cabinets, when the water cooling system starts to work, the outlet water temperature of each power cabinet is collected every t time to form an outlet water temperature sequence wherein t represents a time interval, T out，i (k) represents the cooling water outlet temperature collected for the i-th power cabinet for the k-th time, i has a value of 1, 2, … n, k has a value of k≥1 and k is an integer; step S22: when the water-cooling system starts to work, the control voltage of the proportional throttling valve in each power cabinet is collected every t time, and the control voltage of the proportional throttling valve collected for the kth time in the ith power cabinet is recorded as ui(k); Step S23, calculating the average value of the cooling water outlet temperature of the kth acquisition In particular: according to the sequence of outlet temperatures of the cooling water stripped the maximum and minimum values in the range of 0 to 100 Step S24, defining the cooling water outlet temperature difference sequence as Wherein, ΔT i (k) represents the absolute value of the difference between the cooling water outlet temperature collected for the kth time in the ith power cabinet and the average value of the cooling water outlet temperature collected for the kth time, ΔT i The calculation formula of (k) is Step S25, defining the normalized cooling water outlet temperature difference sequence as where ΔT nor，i (k) represents ΔT i (k) normalized value, ΔT nor，i (k) is calculated by the formula wherein a denotes a lower limit of a normalization interval and a > 1, b denotes an upper limit of the normalization interval and a < b < 2, ΔT max and ΔT min denote, respectively the maximum value and the minimum value of Step S26, defining a sequence of relative errors of the outlet temperature of the cooling water wherein, δ i (k) represents the relative error of the outlet temperature of the cooling water collected for the i-th power cabinet for the k-th time, δ i The calculation formula of δ 9. The water-cooling working method of the large-thrust vibration table high-pressure power amplifier according to claim 8, characterized in that, In step S3, the control voltage of the proportional throttle valve in each power cabinet is corrected every t time to adjust the cooling water flow. The specific method is: taking the correction of the control voltage of the proportional throttle valve in the i-th power cabinet for the k-th time as an example, and recording the corrected control voltage of the proportional throttle valve as According to the size of δ i (k), the correction method of the control voltage of the proportional throttle valve is divided into four categories according to the size of δ (k). The specific classification is as follows: if |δ i (k) > η1, where η1 is a lower relative error threshold for the outlet temperature of the cooling water and η1 > 0, then the control voltage of the proportional throttle is not corrected; Second category: if η1 < δ i (k) ≤ η2 or -η2 ≤ δ i (k) < -η1, where η2 is the intermediate threshold of relative error of cooling water outlet temperature and η2 > 0, the control voltage of proportional throttle valve needs to be corrected, when η1 < δ i (k) ≤ η2, the control voltage of proportional throttle valve after correction is where k is a proportional coefficient; when -η2≤δ i (k) < -η1, the control voltage of the proportional throttle valve after correction is Third category, if η2< δ i (k) < -η2, where η3 is the upper threshold of the relative error of the cooling water outlet temperature and η3 > 0, the control voltage of the proportional throttle valve needs to be corrected, when η2< δ i (k) < -η2, where η3 is the upper threshold of the relative error of the cooling water outlet temperature and η3 > 0, the control voltage of the proportional throttle valve needs to be corrected, when η2< δ i (k) < -η2, where η3 is the upper threshold of the relative error of the cooling water outlet temperature and η3 > 0, the control voltage of the proportional throttle valve needs to be corrected, when η2< δ when -η3≤δ i (k) < -η2, modified proportional throttle the control voltage of the first transistor is The fourth type, if δ i (k) > η3, the control voltage of the proportional throttle needs to be corrected, when δ i (k) > η3, the control voltage of the proportional throttle after correction is When δ i (k) < -η3, the control voltage of the corrected proportional throttle valve is

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