Self-adaptive proportional valve controller and method

Abstract

The invention relates to the technical field of proportional valve controllers, and discloses a self-adaptive proportional valve controller and method, the self-adaptive proportional valve controller comprises a proportional valve body, a control box and a sliding frame, the control box is fixedly installed on the front face of the proportional valve body, a transmission mechanism is rotatably installed at the bottom of the control box, and the sliding frame is movably installed in the control box through a sliding groove; according to the technical scheme, the rotating power of the box door is transmitted to the transmission rod through the spline hole shaft, and the transmission rod drives the sliding frame to translate in the control box along the sliding groove through the transmission mechanism, so that electrical equipment in the control box is more convenient to assemble and overhaul, the whole control box does not need to be disassembled, and the maintenance cost is reduced. The operation time is greatly shortened; the precision component is protected; the current of the electromagnet is adjusted in real time through the PID controller according to temperature data, so that the proportional valve body can respond quickly, the influence of magnetic gap change is offset, errors caused by temperature change are dynamically corrected, and the output stability of the proportional valve body is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of proportional valve controllers, and in particular to an adaptive proportional valve controller and method. Background Art

[0002] Adaptive proportional valves play a vital role in modern industrial automation. Adaptive proportional valves achieve highly dynamic regulation of fluid flow through proportional valve controllers, precisely adjusting fluid flow to meet specific control requirements. This enables the adaptive proportional valve to quickly respond to changes within the system and have high adjustment accuracy, which enables the adaptive proportional valve to maintain high stability under complex working conditions. This feature is particularly important for industrial environments that require fast response and precise control, such as high-precision manufacturing, aerospace, medical equipment and other fields.

[0003] A single-electromagnet proportional valve controller based on current adaptation with announcement number CN109599246A has solved the technical disadvantages of low response speed, poor consistency and short life. However, in actual use, similar structures still have many defects. For example, the built-in equipment of the existing proportional valve controller adopts a fixed installation, which makes it inconvenient to assemble and repair the electrical equipment inside the box. The operator needs to disassemble the entire control box, which is not only time-consuming and labor-intensive, but also has the risk of damaging the precision components inside the box. When facing rapid changes in the internal and external environment of the system, traditional proportional valves often have problems such as delayed response and insufficient control accuracy. For example, temperature changes may cause changes in the magnetic gap of the valve body structure, resulting in the performance of the valve body deteriorating in high or low temperature environments.

[0004] Therefore, the above technical problems need to be solved. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the present invention proposes an adaptive proportional valve controller and method to solve the problem that it is inconvenient to assemble and repair the electrical equipment inside the box, and there is a risk of damaging the precision components inside the box; temperature changes may cause the magnetic gap of the valve body structure to change, causing the performance of the valve body to deteriorate in high or low temperature environments.

[0006] In order to solve the above technical problems, the basic technical solutions proposed by the present invention are:

[0007] The cam is fixedly mounted on the front of the proportional valve body, and a through-hole shaft is fixedly mounted on one side of the front of the control box. A transmission rod is rotatably mounted inside the through-hole shaft. A box door is mounted on the front of the control box through the transmission rod and two spline hole shafts. Slide grooves are provided on both sides of the bottom of the control box. A transmission mechanism is rotatably mounted on the bottom of the control box, and the transmission mechanism is connected to the bottom end of the transmission rod in a transmission manner. The sliding frame is movably mounted inside the control box through the slide groove, and the sliding frame is connected to the transmission mechanism in a transmission manner. The box door is opened and closed by driving the transmission rod to rotate through the spline hole shaft, and the rotating transmission rod drives the sliding frame to move horizontally through the transmission mechanism and move out of the control box, so as to facilitate the assembly and maintenance of electrical equipment installed on the front of the sliding frame.

[0008] Preferably, the sliding frame consists of a sliding base, two mounting rods, a mounting hole plate, a top frame and a locking piece. The bottom ends of the two mounting rods are respectively fixedly mounted on both sides of the top of the sliding base, the top frame is fixedly mounted on the top ends of the two mounting rods, racks are fixedly mounted on both sides of the sliding base, and adjustment slots are equidistantly provided inside the two mounting rods. A plurality of mounting hole plates are installed on the front sides of the two mounting rods through the adjustment slots and the locking piece.

[0009] Preferably, the locking member consists of a fixed rod, a rubber sleeve, a threaded rod and a threaded sleeve, the threaded rod is fixedly installed on one end of the fixed rod, the rubber sleeve is movably sleeved on the outside of the threaded rod, the threaded sleeve is sleeved on the outside of the threaded rod, and one end of the threaded sleeve is in contact with one end of the rubber sleeve.

[0010] Preferably, the transmission mechanism includes a synchronous pulley, two gears and a limiting shaft, the two gears are fixedly mounted on both ends of the synchronous pulley, one of the gears is fixedly connected to the bottom end of the transmission rod, and the top of the other gear is fixedly mounted with a limiting shaft, and the limiting shaft is rotatably mounted on one side of the bottom of the control box.

[0011] Preferably, an integrated temperature sensor is mounted on the front of the mounting hole plate via a locking piece, and an ADC and a solid-state relay are fixedly mounted below the integrated temperature sensor.

[0012] Preferably, the transmission rod is composed of a linkage shaft and two spline rods, the two spline rods are fixedly mounted at both ends of the linkage shaft, and the linkage shaft is rotatably mounted inside the through-hole shaft.

[0013] Preferably, the two spline hole shafts are fixedly mounted on one side of the box door, and spline holes are provided inside the spline hole shafts.

[0014] Preferably, a PID controller is embedded in the front of the door, and the PID controller is electrically connected to the integrated temperature sensor, ADC and solid-state relay through wires.

[0015] An adaptive proportional valve control method, the control method comprising the following steps:

[0016] Step 1: Open the box door so that the spline hole shaft drives the spline-connected transmission rod to rotate. The rotating transmission rod drives the synchronous pulley to rotate through one of the gears. The rotating synchronous pulley drives the other gear to rotate synchronously. The two synchronously rotating gears drive the sliding chassis to move through the meshing rack. The movable sliding chassis moves out of the control box through the mounting rod, so that the mounting hole plate on the front of the mounting rod moves out of the control box.

[0017] Step 2: The integrated temperature sensor, ADC, and solid-state relay are fixedly mounted on the front of the mounting plate using a lock. Specifically, the fixing rod in the lock is inserted into the through-hole inside the mounting plate. The threaded sleeve is rotated to move outside the threaded sleeve to squeeze the rubber sleeve, causing the rubber sleeve to expand and deform. The diameter of the deformed rubber sleeve is larger than the through-hole inside the mounting plate, thereby locking the position of the fixing rod and facilitating quick disassembly and assembly of the integrated temperature sensor, ADC, and solid-state relay.

[0018] Step 3: After assembly is completed, the box door is closed. The box door drives the transmission rod to rotate in the opposite direction through the spline hole shaft. The reverse rotating transmission rod drives the synchronous pulley to rotate in the opposite direction through one of the gears. The reverse rotation drives the other gear to rotate in the opposite direction synchronously. The two synchronously counter-rotating gears drive the sliding chassis to move in the opposite direction through the meshing racks. The mounting plate drives the assembled integrated temperature sensor, ADC and solid-state relay to move into the interior of the control box. At this time, the box door and the control box are completely closed.

[0019] Step 4: Attach the detection end of the integrated temperature sensor to the electromagnet in the proportional valve body to ensure real-time monitoring of temperature changes. The integrated temperature sensor transmits the monitoring electrical signal to the ADC. The ADC converts the received real-time monitoring signal into a discrete digital signal and transmits it to the PID controller through a wire. The PID controller executes a compensation algorithm based on the detected temperature data and adjusts the current in real time.

[0020] Preferably, in step 4, the PID controller executes a compensation algorithm based on the detected temperature data, which is achieved by the following steps:

[0021] S1: Collect temperature data T actnal , obtain real-time data through the integrated temperature sensor 5

[0022] S2: Temperature difference calculation: Calculate the difference between the actual temperature and the nominal temperature:

[0023] ΔT=T actnal -T nom

[0024] Among them, T nomis the set target temperature, and ΔT is the temperature deviation value, which is used for subsequent compensation calculations;

[0025] S3: Calculate the compensation current according to the model:

[0026] I comp =I nom (1+β·ΔT)

[0027] Among them, I nom The current value under nominal working conditions, β is the temperature compensation coefficient, which is calibrated through experiments;

[0028] The PID controller 202 is used to adjust the current in real time in combination with temperature feedback:

[0029]

[0030] Where e(t) is the error between the set temperature value and the actual value, that is, e(t) = T set -T actnal , k p , k i , k d are proportional, integral, and differential coefficients respectively;

[0031] S4: Output signal u(t) through PID controller directly drives solid-state relay to adjust actual current I actnal

[0032]

[0033] Among them, I comp is the compensation current, is the current-magnetic gap conversion coefficient;

[0034] The PID controller 202 can dynamically correct the error caused by temperature change to ensure the output stability of the proportional valve body.

[0035] The beneficial effects of the present invention are:

[0036] The technical scheme of the application transmits the rotating power of the box door to the transmission rod through the spline hole shaft, and the transmission rod drives the sliding frame to translate along the sliding groove in the control box through the transmission mechanism, so that the assembly and maintenance of the electrical equipment in the control box become more convenient, the whole control box does not need to be disassembled, the operation time is greatly reduced, and the precise components are protected; the PID controller adjusts the electromagnet current in real time according to the temperature data, offsets the influence of the magnetic gap change, realizes dynamic correction of the error caused by temperature change, and ensures the output stability of the proportional valve body; in addition, the PID controller dynamically adjusts the output current of the solid-state relay, so that the proportional valve body can quickly respond to various changes, and the control parameters are adjusted according to real-time feedback, so that the system can still maintain high stability under various complex working conditions, the flexibility and temperature adaptability of the proportional valve controller are improved, and the stability and reliability of the proportional valve body are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is the overall structure schematic diagram in the application;

[0038] Figure 2 It is the internal structure schematic diagram of the control box in the application;

[0039] Figure 3 It is the box door opening structure schematic diagram in the application;

[0040] Figure 4 It is the control box and the box door unfolding structure schematic diagram in the application;

[0041] Figure 5 It is the sliding frame structure schematic diagram in the application;

[0042] Figure 6 It is the transmission mechanism structure schematic diagram in the application;

[0043] Figure 7 It is the mounting hole plate and the lock piece connection structure schematic diagram in the application;

[0044] Figure 8 It is the lock piece structure schematic diagram in the application.

[0045] Explanation of reference signs:

[0046] 1. Proportional valve body; 2. Control box; 201. Box door; 202. PID controller; 203. Slide; 204. Splined hole shaft; 205. Transmission rod; 2051. Linkage shaft; 2052. Splined rod; 206. Through-hole shaft; 3. Transmission mechanism; 301. Synchronous pulley; 302. Gear; 303. Limit shaft; 4. Sliding frame; 401. Sliding base; 402. Rack; 403. Mounting rod; 404. Mounting hole plate; 405. Top frame; 406. Lock; 4061. Fixed rod; 4062. Rubber sleeve; 4063. Threaded rod; 4064. Threaded sleeve; 5. Integrated temperature sensor. DETAILED DESCRIPTION

[0047] The following will be combined with the Figure 1 To the attached Figure 8 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0048] The cam 206 is fixedly mounted on the front of the proportional valve body 1, and a through-hole shaft 206 is fixedly mounted on one side of the front of the control box 2. A transmission rod 205 is rotatably mounted inside the through-hole shaft 206. A box door 201 is mounted on the front of the control box 2 through the transmission rod 205 and two spline hole shafts 204. Slide grooves 203 are provided on both sides of the bottom of the control box 2. A transmission mechanism 3 is rotatably mounted on the bottom of the control box 2, and the transmission mechanism 3 is transmission-connected to the bottom end of the transmission rod 205; the slide frame 4 is movably mounted inside the control box 2 through the slide groove 203, and the slide frame 4 is transmission-connected to the transmission mechanism 3; the box door 201 is opened and closed by driving the transmission rod 205 to rotate through the spline hole shaft 204, and the rotating transmission rod 205 drives the slide groove 203 of the slide frame 4 to translate through the transmission mechanism 3 and move out of the control box 2, which is convenient for assembling and repairing the electrical equipment installed on the front of the slide frame 4;

[0049] It should be noted that the proportional valve body 1 is the core part of the adaptive proportional valve, responsible for the function of controlling pressure and flow; the control box 2 is fixedly installed on the front of the proportional valve body 1, used to accommodate and protect the internal control elements; the box door 201 transmits rotary power to the transmission rod 205 through the spline hole shaft 204, so that the transmission rod 205 rotates when the box door 201 is opened or closed; the sliding slot 203 on both sides of the bottom of the control box 2 allows the sliding frame 4 to move inside it; the transmission mechanism 3 rotatably installed at the bottom of the control box 2 is connected with the transmission rod 205, when the box door 201 drives the transmission rod 205 to rotate through the spline hole shaft 204, the transmission rod 205 transmits rotary power to the transmission mechanism 3, so that the transmission mechanism 3 is synchronously linked with the opening or closing of the box door 201, and the sliding frame 4 is driven by the transmission mechanism 3 to translate inside the control box 2 along the sliding slot 203, facilitating the assembly and maintenance of the electrical equipment on the sliding frame 4.

[0050] As shown in Figures 3 to 5 The sliding frame 4 is composed of a sliding chassis 401, two mounting rods 403, mounting hole plates 404, a top frame 405 and a lock 406. The bottom ends of the two mounting rods 403 are fixedly installed on both sides of the top of the sliding chassis 401, and the top frame 405 is fixedly installed at the top ends of the two mounting rods 403. The sliding chassis 401 has a rack 402 fixedly installed on both sides thereof, and the two mounting rods 403 are each provided with an adjusting groove at equal intervals in the interior thereof. The front surface of each mounting rod 403 is provided with a plurality of mounting hole plates 404 installed through the adjusting groove and cooperating with the lock 406.

[0051] It should be noted that the sliding chassis 401 serves as a basic support and is slidingly installed inside the sliding slot 203 and extends to the bottom of the control box 2 through the sliding slot 203. One end of each of the two mounting rods 403 is fixed to the sliding chassis 401, and the other end is fixed to the top frame 405, achieving vertical fixed connection of the whole. The adjusting grooves provided in the interiors of the two mounting rods 403 provide mounting positions for the lock 406 on the back surface of the mounting hole plate 404, facilitating adjustment of the mounting position of the mounting hole plate 404 according to assembly needs. The racks 402 on both sides of the sliding chassis 401 are respectively meshingly connected with the two gears 302, and the rotary force of the gears 302 is converted into horizontal moving force through the racks 402. The mounting hole plates 404 are fixed in the adjusting grooves of the mounting rods 403 through the lock 406 and are adjusted in mounting position as needed. The top frame 405 provides top support and enhances the stability of the overall structure.

[0052] As shown in Figures 7 and 8As shown, the lock 406 is composed of a fixed rod 4061, a rubber sleeve 4062, a threaded rod 4063 and a threaded sleeve 4064. The threaded rod 4063 is fixedly mounted on one end of the fixed rod 4061, the rubber sleeve 4062 is movably sleeved on the outside of the threaded rod 4063, and the threaded sleeve 4064 is sleeved on the outside of the threaded rod 4063, and one end of the threaded sleeve 4064 is in contact with one end of the rubber sleeve 4062.

[0053] It should be noted that the rubber sleeve 4062 is a deformable flexible structure, which will deform under external force; the threaded rod 4063 can achieve precise adjustment of the position of the threaded sleeve 4064 through the threaded structure, thereby adjusting the tightness of the lock 406; the function of the threaded sleeve 4064 is to fix the rubber sleeve 4062 through a threaded connection, which is not only convenient for adjusting the locking degree, but also can easily achieve the degree of extrusion deformation of the rubber sleeve 4062 by rotating the threaded sleeve 4064, so that the lock 406 can be firmly fixed on various objects; the working principle is: by rotating the threaded sleeve 4064 and moving it outside the threaded rod 4063 to squeeze the rubber sleeve 4062, the rubber sleeve 4062 is expanded and deformed, and the diameter of the deformed rubber sleeve 4062 is larger than the through hole inside the mounting hole plate 404, thereby achieving locking of the position of the fixing rod 4061.

[0054] like Figures 5 and 6 As shown, the transmission mechanism 3 includes a synchronous pulley 301, two gears 302 and a limiting shaft 303. The two gears 302 are fixedly mounted on both ends of the synchronous pulley 301, one of the gears 302 is fixedly connected to the bottom end of the transmission rod 205, and the top of the other gear 302 is fixedly mounted with a limiting shaft 303, and the limiting shaft 303 is rotatably mounted on one side of the bottom of the control box 2.

[0055] It should be noted that the synchronous pulley 301 realizes power transmission through the gears 302 on both sides thereof, wherein one gear 302 is fixedly connected to the bottom end of the transmission rod 205, and the transmission rod 205 transmits the power generated by the opening or closing of the box door 201 to the gear 302, driving the gear 302 to rotate, and the rotating gear 302 drives the other gear 302 to rotate synchronously through the synchronous pulley 301; the limiting shaft rod 303 rotatably installs the gear 302 on one side of the bottom of the control box 2 to facilitate the rotation transmission of the gear 302.

[0056] like Figures 2 to 5 As shown, the front of the mounting hole plate 404 is mounted with an integrated temperature sensor 5 through a lock 406, and an ADC and a solid-state relay are fixedly mounted below the integrated temperature sensor 5;

[0057] It should be noted that the mounting hole plate 404 provides an installation position for the integrated temperature sensor 5, ADC, and solid-state relay, which facilitates the rapid disassembly and assembly of the integrated temperature sensor 5, ADC, and solid-state relay through the lock 406; the integrated temperature sensor 5 is externally connected to a detection end through a wire, and the external detection end is attached to the electromagnet in the proportional valve body 1 to monitor the temperature change of the electromagnet in real time. The ADC is used to convert the analog signal detected by the integrated temperature sensor 5 into a digital signal for processing, and the solid-state relay realizes the switching control of the circuit according to the control signal sent by the received PID controller 202.

[0058] like Figure 4 、 Figure 6 As shown, the two transmission rods 205 are composed of a linkage shaft 2051 and two spline rods 2052. The two spline rods 2052 are fixedly mounted on both ends of the linkage shaft 2051. The linkage shaft 2051 is rotatably mounted inside the through-hole shaft 206.

[0059] It should be noted that the linkage shaft 2051 plays the role of connection and transmission. By rotating and installing it inside the through-hole shaft 206, the linkage of the two spline rods 2052 can be realized; the two spline rods 2052 are connected to the spline hole pin inside the spline hole shaft 204. When the box door 201 rotates and moves, the box door 201 drives the spline rod 2052 connected to the spline structure to rotate through the spline hole shaft 204, and the rotating spline rod 2052 transmits the rotational power to one of the gears 302.

[0060] like Figure 4 As shown, two spline hole shafts 204 are fixedly mounted on one side of the box door 201, and spline holes are opened inside the spline hole shafts 204;

[0061] It should be noted that the function of the spline hole shaft 204 is to provide a connection with the through hole shaft 206 on the box door 201 and transmit power through the transmission rod 205. The internal spline hole can accurately couple with the spline rod 2052 and transmit power.

[0062] like Figures 1 to 4 As shown, a PID controller 202 is embedded in the front of the box door 201, and the PID controller 202 is electrically connected to the integrated temperature sensor 5, ADC and solid-state relay through wires;

[0063] It should be noted that the PID controller 202 executes a compensation algorithm based on the detected temperature data and adjusts the current in real time; it receives temperature data from the integrated temperature sensor 5 and performs precise adjustment through its own PID algorithm; the integrated temperature sensor 5 is used to monitor the temperature inside the box in real time and convert the temperature signal into an electrical signal; the ADC is responsible for converting the analog signal of the integrated temperature sensor 5 into a digital signal for processing by the PID controller 202; the solid-state relay uses an electrical signal to connect or disconnect the circuit, thereby adjusting the electromagnet current in the proportional valve body 1 in real time to offset the influence of the magnetic gap change.

[0064] An adaptive proportional valve control method, the control method comprising the following steps:

[0065] Step 1: Manually open the box door 201, so that the spline hole shaft 204 drives the transmission rod 205 connected to the spline with it to rotate. The rotating transmission rod 205 drives the synchronous pulley 301 to rotate through one of the gears 302. The rotating synchronous pulley 301 drives the other gear 302 to rotate synchronously. The two synchronously rotating gears 302 cooperate with each other through the meshing racks 402 to jointly drive the sliding base 401 to move along the slide groove 203, so that the installation rod 403 fixedly connected to the sliding base 401 moves outward from the interior of the control box 2, and finally the installation hole plate 404 on the front of the installation rod 403 is also moved out of the interior of the control box 2;

[0066] Step 2: The integrated temperature sensor 5, ADC and solid-state relay are fixedly mounted on the front of the mounting hole plate 404 by the lock 406. Specifically, the fixing rod 4061 in the lock 406 is inserted into the through hole inside the mounting hole plate 404. The threaded sleeve 4064 is rotated to move outside the threaded rod 4063 to squeeze the rubber sleeve 4062, causing the rubber sleeve 4062 to expand and deform. The diameter of the deformed rubber sleeve 4062 is larger than the through hole inside the mounting hole plate 404, thereby locking the position of the fixing rod 4061. This not only facilitates the rapid disassembly and assembly of the integrated temperature sensor 5, ADC and solid-state relay, but also ensures the stability and safety of the installation, thereby improving the reliability and maintenance convenience of the system.

[0067] Step 3: After the assembly is completed, the box door 201 is closed. The box door 201 drives the transmission rod 205 to rotate in the opposite direction through the spline hole shaft 204. The reversely rotating transmission rod 205 drives the synchronous pulley 301 to rotate in the opposite direction through one of the gears 302. The reverse rotation drives the other gear 302 to rotate in the opposite direction synchronously. The two synchronously counter-rotating gears 302 drive the sliding base 401 to move in the opposite direction through the meshing rack 402, so that the mounting hole plate 404 drives the assembled integrated temperature sensor 5, ADC and solid-state relay to move into the interior of the control box 2. At this time, the box door 201 and the control box 2 are completely closed.

[0068] Step 4: Attach the detection end of the integrated temperature sensor 5 to the electromagnet in the proportional valve body 1 to ensure real-time monitoring of temperature changes. The integrated temperature sensor 5 transmits the monitoring electrical signal to the ADC. The ADC converts the received real-time monitoring signal into a discrete digital signal and transmits it to the PID controller 202 via a wire. The PID controller 202 executes a compensation algorithm based on the detected temperature data and adjusts the current passing through the electromagnet in the proportional valve body 1 in real time to offset the influence of the magnetic gap change and realize dynamic correction of the error caused by temperature change. This is achieved through the following steps:

[0069] S1: Collect temperature data T actnal , obtain real-time data through the integrated temperature sensor 5;

[0070] S2: Temperature difference calculation: Calculate the difference between the actual temperature and the nominal temperature:

[0071] ΔT=T actnal -T nom

[0072] Among them, T nom is the set target temperature, and ΔT is the temperature deviation value, which is used for subsequent compensation calculations;

[0073] S3: Calculate the compensation current according to the model:

[0074] I comp =I nom (1+β·ΔT)

[0075] Among them, I nom The current value under nominal working conditions, β is the temperature compensation coefficient, which is calibrated through experiments;

[0076] The PID controller 202 is used to adjust the current in real time in combination with temperature feedback:

[0077]

[0078] Where e(t) is the error between the set temperature value and the actual value, that is, e(t) = T set -T actnal , k p is proportional, quickly responding to temperature deviation; k i is the integral to eliminate the steady-state magnetic gap error; k d is the differential coefficient, which suppresses the overmodulation of magnetic gap caused by sudden temperature changes;

[0079] S4: Output signal u(t) through PID controller directly drives solid-state relay to adjust actual current I actnal

[0080]

[0081] Among them, I comp is the compensation current, is the current-to-magnetic gap conversion factor, ensuring that each ampere of current change can compensate for micron-level magnetic gap deviation;

[0082] The PID controller 202 adjusts the electromagnet current in real time according to the temperature data to offset the influence of the magnetic gap change, dynamically correct the error caused by the temperature change, and ensure the output stability of the proportional valve body;

[0083] In addition, by dynamically adjusting the current output by the solid-state relay through the PID controller 202, the proportional valve body 1 can quickly respond to errors caused by temperature changes and adjust the control parameters according to real-time feedback, thereby ensuring that the system can maintain high stability under various complex working conditions; the proportional valve body 1 has the ability of high dynamic response and precise control.

[0084] Based on the explanations and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. An adaptive proportional valve controller, comprising a proportional valve body (1), a control box (2) and a sliding frame (4), characterized in that: The control box (2) is fixedly mounted on the front of the proportional valve body (1), a through-hole shaft (206) is fixedly mounted on one side of the front of the control box (2), a transmission rod (205) is rotatably mounted inside the through-hole shaft (206), a box door (201) is mounted on the front of the control box (2) through the transmission rod (205) and two spline hole shafts (204), a sliding groove (203) is provided on both sides of the bottom of the control box (2), a transmission mechanism (3) is rotatably mounted on the bottom of the control box (2), and the transmission mechanism (3) is rotatably mounted on the bottom of the control box (2). The mechanism (3) is in transmission connection with the bottom end of the transmission rod (205); the sliding frame (4) is movably installed in the interior of the control box (2) through the sliding groove (203), and the sliding frame (4) is in transmission connection with the transmission mechanism (3); the opening and closing of the box door (201) drives the transmission rod (205) to rotate through the spline hole shaft (204), and the rotating transmission rod (205) drives the sliding frame (4) to move horizontally through the transmission mechanism (3), and moves out of the interior of the control box (2), so as to facilitate the assembly and maintenance of the electrical equipment installed on the front of the sliding frame (4).

2. The adaptive proportional valve controller according to claim 1, characterized in that: The sliding frame (4) comprises a sliding base frame (401), two mounting rods (403), a mounting hole plate (404), a top frame (405) and a locking piece (406); the bottom ends of the two mounting rods (403) are fixedly mounted on both sides of the top of the sliding base frame (401); the top frame (405) is fixedly mounted on the top ends of the two mounting rods (403); racks (402) are fixedly mounted on both sides of the sliding base frame (401); adjustment slots are evenly spaced inside the two mounting rods (403); and a plurality of mounting hole plates (404) are mounted on the front faces of the two mounting rods (403) in cooperation with the locking piece (406) through the adjustment slots.

3. The adaptive proportional valve controller according to claim 2, characterized in that: The locking element (406) is composed of a fixed rod (4061), a rubber sleeve (4062), a threaded rod (4063) and a threaded sleeve (4064). The threaded rod (4063) is fixedly mounted on one end of the fixed rod (4061). The rubber sleeve (4062) is movably sleeved on the outside of the threaded rod (4063). The threaded sleeve (4064) is sleeved on the outside of the threaded rod (4063). One end of the threaded sleeve (4064) is in contact with one end of the rubber sleeve (4062).

4. The adaptive proportional valve controller according to claim 1, characterized in that: The transmission mechanism (3) comprises a synchronous pulley (301), two gears (302) and a limiting shaft (303), wherein the two gears (302) are fixedly mounted on both ends of the synchronous pulley (301), one of the gears (302) is fixedly connected to the bottom end of the transmission rod (205), and the top of the other gear (302) is fixedly mounted with a limiting shaft (303), and the limiting shaft (303) is rotatably mounted on one side of the bottom of the control box (2).

5. The adaptive proportional valve controller according to claim 2, characterized in that: An integrated temperature sensor (5) is mounted on the front of the mounting hole plate (404) via a locking piece (406), and an ADC and a solid-state relay are fixedly mounted below the integrated temperature sensor (5).

6. The adaptive proportional valve controller according to claim 1, characterized in that: The transmission rod (205) is composed of a linkage shaft (2051) and two spline rods (2052). The two spline rods (2052) are fixedly mounted on both ends of the linkage shaft (2051). The linkage shaft (2051) is rotatably mounted inside the through-hole shaft (206).

7. The adaptive proportional valve controller according to claim 1, characterized in that: The two spline hole shafts (204) are fixedly mounted on one side of the box door (201), and spline holes are provided inside the spline hole shafts (204).

8. The adaptive proportional valve controller according to claim 5, characterized in that: A PID controller (202) is embedded and installed on the front of the box door (201), and the PID controller (202) is electrically connected to the integrated temperature sensor (5), ADC and solid-state relay via wires.

9. An adaptive proportional valve control method, comprising an adaptive proportional valve controller according to any one of claims 1 to 8, characterized in that: The control method includes the following steps: Step 1: Open the box door (201) so that the spline hole shaft (204) drives the spline-connected transmission rod (205) to rotate, and the rotating transmission rod (205) drives the synchronous pulley (301) to rotate through one of the gears (302), and the rotating synchronous pulley (301) drives the other gear (302) to rotate synchronously, and the two synchronously rotating gears (302) drive the sliding chassis (401) to move through the meshing rack (402), and the moving sliding chassis (401) moves out of the control box (2) through the mounting rod (403), so that the mounting hole plate (404) on the front of the mounting rod (403) moves out of the control box (2); Step 2: The integrated temperature sensor (5), ADC and solid-state relay are fixedly mounted on the front of the mounting hole plate (404) through the locking member (406). Specifically, the fixing rod (4061) in the locking member (406) is inserted into the through hole inside the mounting hole plate (404). The threaded sleeve (4064) is rotated to move outside the threaded rod (4063) to squeeze the rubber sleeve (4062), so that the rubber sleeve (4062) expands and deforms. The diameter of the deformed rubber sleeve (4062) is larger than the through hole inside the mounting hole plate (404), thereby locking the position of the fixing rod (4061) and facilitating the rapid disassembly and assembly of the integrated temperature sensor (5), ADC and solid-state relay. Step 3: After the assembly is completed, the box door (201) is closed. The box door (201) drives the transmission rod (205) to rotate in the opposite direction through the spline hole shaft (204). The reversely rotating transmission rod (205) drives the synchronous pulley (301) to rotate in the opposite direction through one of the gears (302). The reverse rotation drives the other gear (302) to rotate in the opposite direction synchronously, so that the two synchronously reversely rotating gears (302) drive the sliding chassis (401) to move in the opposite direction through the meshing rack (402), so that the mounting hole plate (404) drives the assembled integrated temperature sensor (5), ADC and solid-state relay to move into the interior of the control box (2). At this time, the box door (201) and the control box (2) are completely closed; Step 4: The detection end of the integrated temperature sensor (5) is attached to the electromagnet in the proportional valve body (1) to ensure real-time monitoring of temperature changes. The integrated temperature sensor (5) transmits the monitoring electrical signal to the ADC. The ADC converts the received real-time monitoring signal into a discrete digital signal and transmits it to the PID controller (202) through a wire. The PID controller (202) executes a compensation algorithm based on the detected temperature data and adjusts the current in real time.

10. The adaptive proportional valve control method according to claim 9, characterized in that: In step 4, the PID controller (202) executes a compensation algorithm based on the detected temperature data, which is achieved by the following steps: S1: Collect temperature data T actnal , obtain real-time data through the integrated temperature sensor (5) S2: Temperature difference calculation: Calculate the difference between the actual temperature and the nominal temperature: ΔT=T actnal -T nom Among them, T nom is the set target temperature, and ΔT is the temperature deviation value, which is used for subsequent compensation calculations; S3: Calculate the compensation current according to the model: I comp =I nom ·(1+β·ΔT) Among them, I nom The current value under nominal working conditions, β is the temperature compensation coefficient, which is calibrated through experiments; A PID controller (202) is used to adjust the current in real time in combination with temperature feedback: Where e(t) is the error between the set temperature value and the actual value, that is, e(t) = T set -T actnal , k p , k i , k d are proportional, integral, and differential coefficients respectively; S4: Output signal u(t) through PID controller directly drives solid-state relay to adjust actual current I actnal Among them, I comp is the compensation current, is the current-magnetic gap conversion coefficient; The PID controller (202) can dynamically correct the error caused by temperature change to ensure the output stability of the proportional valve body.

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