CN117984666A - Ink pump rotating speed self-adaptive control method, device and storage medium - Google Patents
Ink pump rotating speed self-adaptive control method, device and storage medium Download PDFInfo
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Abstract
The invention discloses a self-adaptive control method, equipment and a storage medium for the rotating speed of an ink pump, and relates to the technical field of printers; comprising the following steps: s1: starting a system, wherein the rotating speed of the ink pump is set to be an initial rotating speed v1; s2: detecting the liquid level of the ink return box through an inductor; s3: when the ink return box overflow signal is detected, the ink pump running at full speed can pump out the ink return more quickly; s4: detecting the disappearance of the liquid level overflow signal of the ink box, and increasing the initial rotation speed by a coefficient; s5: continuing ink return pumping at the rotating speed v1, and repeating the steps S2 to S4; s6: after multiple circulation, the rotating speed and the ink return flow of the ink pump reach an equilibrium state; according to the invention, the sensor is arranged in the system, the liquid level of the ink return box and the working state of the ink pump are monitored in real time, the control system automatically adjusts the rotating speed of the ink pump according to the change of the liquid level and the overflow signal, the normal circulation and the discharge of ink are maintained, and the problems that the rotating speed is low in efficiency and the ink flow is difficult to accurately control in the traditional ink circulation mode are solved.
Description
Technical Field
The invention relates to the technical field of printers, in particular to a method and equipment for adaptively controlling the rotating speed of an ink pump and a storage medium.
Background
In the conventional ink circulation mode, the flow rate of ink is generally controlled by manually adjusting the rotation speed of an ink pump, however, there are some problems with this method. Firstly, the manual motor speed regulation is not efficient, a great deal of time and energy are required, and secondly, when the printing ink quantity changes, the manual speed regulation cannot be quickly adapted to new requirements, so that the ink flow is difficult to accurately control.
Disclosure of Invention
The invention aims to provide a self-adaptive control method, equipment and a storage medium for the rotating speed of an ink pump, which ensure that the flow of ink is stable and does not generate abrupt change, so that the stability of the ink in a spray head is not influenced, and the printing quality is improved.
The aim of the invention can be achieved by the following technical scheme:
the application provides a self-adaptive control method for the rotating speed of an ink pump, which comprises the following steps:
S1: the system is started, the rotating speed of the ink pump is set to be a relatively low initial rotating speed v1, the initial rotating speed v1 is used for starting the pumping of the ink, and 1 circle per minute is set;
s2: detecting the liquid level of the ink return box, detecting the liquid level of the ink return box through the sensor, and if the sensor detects that the liquid level of the ink return box is too high, indicating that the flow rate of the ink return pump is too low to timely discharge ink, and overflowing the ink return box;
S3: when the overflow signal of the ink return box is detected, the rotating speed of the ink pump is immediately increased to the full speed v2, and the ink pump running at full speed can pump the ink return more quickly so as to remove the overflowed ink;
S4: increasing the rotation speed coefficient, continuously detecting the liquid level of the ink return box through the sensor until the overflow signal is detected to disappear, increasing the initial rotation speed v1 by a coefficient, and setting to increase by 5 circles per minute;
s5: continuing pumping ink, continuing pumping ink back at the adjusted rotating speed v1, and repeating the steps S2 to S4;
S6: when the ink pump reaches an equilibrium state, the rotational speed and the ink return flow rate of the ink pump gradually reach an equilibrium state after a plurality of cycles, and under the equilibrium state, the rotational speed of the ink pump adaptively controls the flow rate of the ink.
Preferably, the self-adaptive control device for the rotational speed of the ink pump comprises an ink inlet pipe, an ink return box ink return pipeline and an ink return pump, wherein a float is arranged in the ink return box, when the ink demand increases, the ink inlet pipe can convey more ink into the ink return box, so that the float in the ink return box slowly rises, and once the float rises to a preset upper limit position, the system can output an overflow signal to indicate that the ink return box has reached a capacity limit; to remove the spilled ink, the ink return pump is started to pump the ink out of the ink return cartridge, which causes the float in the ink return cartridge to drop, and as the ink is pumped out, the ink return cartridge level gradually drops until the float returns to the original position.
Preferably, according to steps S1-S6, an automatic adjustment mechanism is introduced,
The liquid level sensor and the ink return pump working state sensor are arranged in the ink return box through the installation sensor, the liquid level sensor is used for monitoring the liquid level change of the ink return box, and the ink return pump working state sensor is used for monitoring the running condition of the ink return pump;
Setting a control system, establishing the control system to receive the data of the sensor, and automatically adjusting according to the received data;
Monitoring liquid level change, setting a liquid level range between 60% and 80% of the capacity of the ink return box, and monitoring the liquid level change of the ink return box in real time by a control system through a liquid level sensor, wherein when the liquid level exceeds a set upper limit or is lower than a set lower limit, the system triggers an automatic regulating mechanism;
Automatically adjusting the outflow speed of the ink return pump, and according to the liquid level change and the working state of the ink return pump, automatically adjusting the outflow speed of the ink return pump by a control system, and increasing the outflow speed of the ink return pump when the liquid level is too high; when the liquid level is too low, the outflow speed of the ink return pump is reduced;
The monitoring and feedback control system continuously monitors the liquid level of the ink return box and the working state of the ink return pump, monitors data in real time to adjust, records liquid level change and adjustment operation, and provides real-time feedback information for related personnel.
Preferably, the liquid level sensor and the ink return pump working state sensor monitor the liquid level change of the ink return box in real time, and when the liquid level exceeds a preset threshold value, the system detects an overflow signal;
In the system setting, a full-speed rotating speed v2 is preset, the rotating speed is usually the highest rotating speed which can be achieved by the ink pump, the ink pump running at full speed can discharge ink from the ink return box more quickly, and once an overflow signal of the ink return box is detected, the system immediately triggers the rotating speed switching control, and the rotating speed of the ink pump is increased from an initial rotating speed v1 to the full-speed rotating speed v2 through the control system;
And monitoring the ink return flow and the liquid level change, and continuously monitoring the ink return flow and the liquid level change of the ink return box after the rotating speed is increased to full speed, so that the ink can be rapidly discharged, and the liquid level is reduced to be within a normal range;
Once the ink return flow and the liquid level are restored to the normal range, the control system adjusts the rotating speed according to the detected data, so that the ink return flow and the liquid level are gradually restored to the stable working state.
Preferably, according to step S6, the balance state is reached, and the variation range of the rotational speed and the ink return flow rate is set to be within ±5% by setting the variation range of the rotational speed and the ink return flow rate as the stability determination condition;
Continuously monitoring the rotating speed and the ink return flow of the ink pump by using a sensor, recording data, analyzing the monitored rotating speed and the ink return flow data of the ink pump, observing the change trend of the data, judging whether the rotating speed and the ink return flow of the ink pump are in an acceptable change range or not and tend to be stable according to a set stability judging condition, and if the data are kept stable for a certain time and have small fluctuation in the set range, considering that the system is in an equilibrium state;
Once the system is judged to reach an equilibrium state, verification and adjustment are performed, data are continuously monitored and analyzed, the ink pump rotating speed and the ink return flow can be ensured to control the flow of the ink in a self-adaptive mode, so that the change requirement of the printing ink quantity is met, if the change range of the rotating speed and the flow exceeds +/-5%, the system is considered to be in an unbalanced state, and parameters are required to be readjusted or whether the inspection equipment works normally or not is required to be inspected.
Preferably, the ink pump rotating speed is used for controlling the ink delivery speed and the ink flow by adjusting the ink pump rotating speed, comparing the difference between the actual output value and the expected target value through a PID control algorithm, calculating a control deviation, regulating the output of the control parameter according to the weights of the proportion, the integral and the derivative, specifically, determining the expected ink flow by setting the target value, acquiring the feedback signals of the actual ink flow and other parameters through a sensor,
Comparing the expected ink flow with the feedback signal, calculating a control deviation, namely the difference between the expected ink flow and the feedback signal, and calculating a control output quantity by using a PID control algorithm according to the control deviation, wherein the specific formula is as follows: [ u (t) =K_p\ cdot e (t) +K_i\ cdot \int\0 } { t } e (\tau) d\tau+K_d\ cdot \frac { de (t) } { dt } ]
Wherein, (u (t)) is a control output quantity, i.e., a rotational speed command, (e (t)) is a current control deviation, i.e., a difference between a target value and a feedback signal, (k_p), (k_i), and (k_d) are weight coefficients of a proportional term, an integral term, and a differential term, respectively, for adjusting a response characteristic of control;
And converting the calculated control output quantity into a command of the rotating speed of the ink pump, and regulating the rotating speed of the ink pump through a control system according to the rotating speed command.
An ink pump rotational speed adaptive control apparatus comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor, implement the above-described methods.
A storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method described above.
The beneficial effects of the invention are as follows:
Compared with the traditional control mode, the automatic control system adopts a self-adaptive rotating speed mode, can reduce manual operation, reduce error probability, improve printing quality, can monitor the liquid level of the ink return box and the working state of the ink pump in real time by installing sensors in the system, such as a liquid level sensor and an ink return pump working state sensor, and can automatically adjust the rotating speed of the ink pump according to the change of the liquid level and overflow signals so as to maintain normal circulation and discharge of ink, thereby solving the problems that the efficiency of manually adjusting the rotating speed in the traditional ink circulation mode is low, the flow of the ink is difficult to accurately control and the like.
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For a better understanding and implementation, the technical solution of the present application is described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for adaptively controlling the rotational speed of an ink pump according to embodiment 1 of the present application;
fig. 2 is a schematic structural diagram of an apparatus for adaptively controlling rotational speed of an ink pump according to embodiment 1 of the present application.
Detailed Description
For further explanation of the technical means and effects adopted by the present application for achieving the intended purpose, exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of methods and systems that are consistent with aspects of the application as detailed in the accompanying claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
The following detailed description of specific embodiments, features and effects according to the present invention is provided with reference to the accompanying drawings and preferred embodiments.
Example 1
Referring to fig. 1-2, the present embodiment provides a method, an apparatus and a storage medium for adaptively controlling a rotational speed of an ink pump, so that an ink flow is stable without abrupt change, so as to avoid affecting the stability of ink in a nozzle, thereby improving printing quality.
The invention provides a self-adaptive control method for the rotating speed of an ink pump, which comprises the following steps:
S1: the system is started, the rotating speed of the ink pump is set to be a relatively low initial rotating speed v1, the initial rotating speed v1 is used for starting the pumping of the ink, and 1 circle per minute is set;
s2: detecting the liquid level of the ink return box, detecting the liquid level of the ink return box through the sensor, and if the sensor detects that the liquid level of the ink return box is too high, indicating that the flow rate of the ink return pump is too low to timely discharge ink, and overflowing the ink return box;
S3: when the overflow signal of the ink return box is detected, the rotating speed of the ink pump is immediately increased to the full speed v2, and the ink pump running at full speed can pump the ink return more quickly so as to remove the overflowed ink;
S4: increasing the rotation speed coefficient, continuously detecting the liquid level of the ink return box through the sensor until the overflow signal is detected to disappear, increasing the initial rotation speed v1 by a coefficient, and setting the increase of 5 circles per minute, wherein the coefficient can be adjusted according to the requirement so as to improve the precision of rotation speed adjustment;
s5: continuing pumping ink, continuing pumping ink back at the adjusted rotating speed v1, and repeating the steps S2 to S4;
s6: when the ink pump reaches an equilibrium state, after multiple cycles, the rotating speed and the ink return flow of the ink pump gradually reach an equilibrium state, and under the equilibrium state, the rotating speed of the ink pump can adaptively control the flow of the ink so as to meet the changing requirement of the printing ink quantity.
By the self-adaptive control method for the rotating speed of the ink pump, the problems that the rotating speed is low in efficiency, the ink flow is difficult to accurately control and the like in the traditional ink circulation mode can be solved, and the rotating speed of the ink pump can be automatically adjusted according to the real-time condition of the liquid level of the ink return box by the system so as to keep the normal circulation and discharge of ink and improve the stability and reliability of ink circulation.
In this embodiment, the device for adaptively controlling the rotational speed of the ink pump includes an ink inlet pipe, an ink return pipe of the ink return box, and an ink return pump, where a float is disposed in the ink return box, when the ink demand increases, the ink inlet pipe will deliver more ink into the ink return box, resulting in slow rising of the float in the ink return box, once the float rises to a preset upper limit, the system will output an overflow signal, indicating that the ink return box has reached a capacity limit; to remove the spilled ink, the ink return pump is started to pump the ink out of the ink return cartridge, which causes the float in the ink return cartridge to drop, and as the ink is pumped out, the ink return cartridge level gradually drops until the float returns to the original position.
In this embodiment, according to steps S1-S6, an automatic adjustment mechanism is introduced,
The liquid level sensor and the ink return pump working state sensor are arranged in the ink return box through the installation sensor, the liquid level sensor is used for monitoring the liquid level change of the ink return box, and the ink return pump working state sensor is used for monitoring the running condition of the ink return pump;
Setting a control system, establishing the control system to receive the data of the sensor, and automatically adjusting according to the received data;
Monitoring liquid level change, setting a liquid level range between 60% and 80% of the capacity of the ink return box, and monitoring the liquid level change of the ink return box in real time by a control system through a liquid level sensor, wherein when the liquid level exceeds a set upper limit or is lower than a set lower limit, the system triggers an automatic regulating mechanism;
Automatically adjusting the outflow speed of the ink return pump, and according to the liquid level change and the working state of the ink return pump, automatically adjusting the outflow speed of the ink return pump by a control system, and increasing the outflow speed of the ink return pump when the liquid level is too high; when the liquid level is too low, the outflow speed of the ink return pump is reduced;
The monitoring and feedback control system continuously monitors the liquid level of the ink return box and the working state of the ink return pump, monitors data in real time to adjust, records liquid level change and adjustment operation, and provides real-time feedback information for related personnel.
By introducing an automatic regulating mechanism, the outflow speed of the ink return pump can be automatically regulated according to the change of the liquid level of the ink return box so as to keep the liquid level within a reasonable range, thus improving the efficiency of ink management and avoiding the overflow of the ink return box.
In this embodiment, the liquid level sensor and the ink return pump working state sensor monitor the change of the liquid level of the ink return box in real time, and when the liquid level exceeds a preset threshold value, the system detects an overflow signal;
In the system setting, a full-speed rotating speed v2 is preset, the rotating speed is usually the highest rotating speed which can be achieved by the ink pump, the ink pump running at full speed can discharge ink from the ink return box more quickly, and once an overflow signal of the ink return box is detected, the system immediately triggers the rotating speed switching control, and the rotating speed of the ink pump is increased from an initial rotating speed v1 to the full-speed rotating speed v2 through the control system;
And monitoring the ink return flow and the liquid level change, and continuously monitoring the ink return flow and the liquid level change of the ink return box after the rotating speed is raised to full speed, so that the ink can be discharged rapidly, and the liquid level is reduced to be within a normal range;
Once the ink return flow and the liquid level are restored to the normal range, the control system adjusts the rotating speed according to the detected data, so that the ink return flow and the liquid level are gradually restored to the stable working state.
By increasing the rotational speed of the ink pump to full speed v2, the system can pump the ink back out faster, effectively remove overflowed ink, thus eliminating the risk of overflow of the ink back box in time and keeping the stable operation of the system.
In this embodiment, according to the step S6, the equilibrium state is reached, and the variation ranges of the rotational speed and the flow rate of the ink pump are set to be within ±5% by setting the variation ranges of the rotational speed and the flow rate of the ink return as the stability determination conditions;
Continuously monitoring the rotating speed and the ink return flow of the ink pump by using a sensor, recording corresponding data, analyzing the monitored rotating speed and the ink return flow data of the ink pump, observing the change trend of the data, judging whether the rotating speed and the ink return flow of the ink pump are in an acceptable change range or not and tend to be stable according to a set stability judging condition, and if the data are kept stable for a certain time and the fluctuation is smaller in the set range, considering that the system is in an equilibrium state;
Once the system is judged to reach an equilibrium state, verification and adjustment are performed, data are continuously monitored and analyzed, the ink pump rotating speed and the ink return flow can be ensured to control the flow of the ink in a self-adaptive mode, so that the change requirement of the printing ink quantity is met, if the change range of the rotating speed and the flow exceeds +/-5%, the system is considered to be in an unbalanced state, and parameters are required to be readjusted or whether the inspection equipment works normally or not is required to be inspected.
Through the above, whether the system reaches an equilibrium state can be determined, and under the equilibrium state, the rotating speed of the ink pump and the ink return flow can be stably and adaptively adapted to meet the changing requirement of the printing ink quantity, and the problem of overflow of the ink return box is avoided.
In this embodiment, the ink pump speed is adjusted to control the ink delivery speed and flow, the difference between the actual output value and the desired target value is compared by the PID control algorithm, a control deviation is calculated, the output of the control parameter is adjusted according to the weights of the proportion, the integral and the derivative, the desired ink flow is determined by setting the target value, and the feedback signals of the actual ink flow and other parameters are obtained by the sensor,
Comparing the expected ink flow with the feedback signal, calculating a control deviation, namely the difference between the expected ink flow and the feedback signal, and calculating a control output quantity by using a PID control algorithm according to the control deviation, wherein the specific formula is as follows: [ u (t) =K_p\ cdot e (t) +K_i\ cdot \int\0 } { t } e (\tau) d\tau+K_d\ cdot \frac { de (t) } { dt } ]
Wherein, (u (t)) is a control output quantity, i.e., a rotational speed command, (e (t)) is a current control deviation, i.e., a difference between a target value and a feedback signal, (k_p), (k_i), and (k_d) are weight coefficients of a proportional term, an integral term, and a differential term, respectively, for adjusting a response characteristic of control;
And converting the calculated control output quantity into a command of the rotating speed of the ink pump, and regulating the rotating speed of the ink pump through a control system according to the rotating speed command.
The system can realize dynamic ink flow control by continuously monitoring feedback signals, calculating deviation and performing PID calculation, converting calculation results into instructions of the ink pump rotating speed, and adjusting the ink pump rotating speed.
An ink pump rotational speed adaptive control apparatus comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor, implement the above-described methods.
A storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method described above.
Example 2
In this embodiment, observing the change in position of the float can adjust the rotational speed of the ink pump by monitoring the rise and fall of the float position, when the float rises to the upper limit position, the system recognizes that the ink return cartridge is about to overflow, triggers the ink pump to operate, increases the rotational speed to accelerate the speed of pumping out ink, and when the float falls to the initial position, the system can gradually decrease the rotational speed of the ink pump to keep the ink flow and the ink return cartridge liquid level within a reasonable range. Setting float position monitoring: a float or ball is mounted in the ink return cartridge and the change in position of the float is monitored by a sensor or other detection means. This can be achieved by physical contact or non-contact sensors.
The method specifically comprises the following steps: setting an upper limit and an initial position, wherein the upper limit position and the initial position of the float are set, the upper limit position refers to the position when the float reaches the limit of the capacity of the ink return box, and the initial position refers to the initial position of the float in a non-overflow state;
Monitoring the position of the floater, continuously monitoring the position change of the floater, recording related data, and inputting a signal of the position of the floater into a control system by using a sensor;
judging the overflow risk, judging whether the overflow risk exists or not by comparing the current position of the floater with the set upper limit position, and indicating that the ink return box is about to overflow when the position of the floater exceeds the upper limit position;
Triggering the ink pump to run, and triggering the ink pump to start running once the system recognizes the overflow risk, and simultaneously, increasing the rotating speed of the ink pump to accelerate the pumping speed of the ink, so as to ensure that the ink in the ink return box can be discharged in time;
monitoring the float lowering, along with the operation of the ink pump, the ink is pumped back to the ink box, so that the float gradually descends, continuously monitoring the position of the float, and comparing the difference between the position and the initial position;
The rotational speed is gradually reduced, when the float descends to the vicinity of the initial position, the rotational speed of the ink pump can be gradually reduced by the system so as to keep the ink flow and the ink return box liquid level within a reasonable range, so that excessive ink discharge can be avoided, and meanwhile, the stability of the ink return box is kept;
and (3) circularly monitoring and adjusting, namely circularly executing the steps, continuously monitoring the position of the floater and adjusting the rotating speed of the ink pump so as to realize the self-adaptive control of the rotating speed of the ink pump, dynamically adjusting the rotating speed of the ink pump according to the changes of different printing tasks and ink demands, and ensuring the stable control of the ink flow and the liquid level of the ink return box.
Through the implementation process, the ink pump rotating speed regulating strategy can automatically recognize overflow risks and trigger the operation of the ink pump according to the position change of the floater so as to accelerate the pumping speed of the ink, and simultaneously, gradually reduce the rotating speed of the ink pump according to the descending of the position of the floater so as to keep the ink flow and the liquid level of the ink return box in a reasonable range, thus avoiding the overflow problem and keeping the normal operation of the system.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (8)
1. An ink pump rotating speed self-adaptive control method is characterized in that: the method comprises the following steps:
S1: the system is started, the rotating speed of the ink pump is set to be a relatively low initial rotating speed v1, the initial rotating speed v1 is used for starting the pumping of the ink, and 1 circle per minute is set;
s2: detecting the liquid level of the ink return box, detecting the liquid level of the ink return box through the sensor, and if the sensor detects that the liquid level of the ink return box is too high, indicating that the flow rate of the ink return pump is too low to timely discharge ink, and overflowing the ink return box;
S3: when the overflow signal of the ink return box is detected, the rotating speed of the ink pump is immediately increased to the full speed v2, and the ink pump running at full speed can pump the ink return more quickly so as to remove the overflowed ink;
S4: increasing the rotation speed coefficient, continuously detecting the liquid level of the ink return box through the sensor until the overflow signal is detected to disappear, increasing the initial rotation speed v1 by a coefficient, and setting to increase by 5 circles per minute;
s5: continuing pumping ink, continuing pumping ink back at the adjusted rotating speed v1, and repeating the steps S2 to S4;
S6: when the ink pump reaches an equilibrium state, the rotational speed and the ink return flow rate of the ink pump gradually reach an equilibrium state after a plurality of cycles, and under the equilibrium state, the rotational speed of the ink pump adaptively controls the flow rate of the ink.
2. The method for adaptively controlling the rotational speed of an ink pump according to claim 1, wherein: the ink pump rotating speed self-adaptive control equipment comprises an ink inlet pipe, an ink return box ink return pipeline and an ink return pump, wherein a float is arranged in the ink return box, when the ink demand is increased, the ink inlet pipe can convey more ink into the ink return box, so that the float in the ink return box slowly rises, and once the float rises to a preset upper limit position, the system can output an overflow signal to indicate that the ink return box has reached a capacity limit; to remove the spilled ink, the ink return pump is started to pump the ink out of the ink return cartridge, which causes the float in the ink return cartridge to drop, and as the ink is pumped out, the ink return cartridge level gradually drops until the float returns to the original position.
3. The method for adaptively controlling the rotational speed of an ink pump according to claim 1, wherein: according to steps S1-S6, an automatic adjustment mechanism is introduced,
The liquid level sensor and the ink return pump working state sensor are arranged in the ink return box through the installation sensor, the liquid level sensor is used for monitoring the liquid level change of the ink return box, and the ink return pump working state sensor is used for monitoring the running condition of the ink return pump;
Setting a control system, establishing the control system to receive the data of the sensor, and automatically adjusting according to the received data;
Monitoring liquid level change, setting a liquid level range between 60% and 80% of the capacity of the ink return box, and monitoring the liquid level change of the ink return box in real time by a control system through a liquid level sensor, wherein when the liquid level exceeds a set upper limit or is lower than a set lower limit, the system triggers an automatic regulating mechanism;
Automatically adjusting the outflow speed of the ink return pump, and according to the liquid level change and the working state of the ink return pump, automatically adjusting the outflow speed of the ink return pump by a control system, and increasing the outflow speed of the ink return pump when the liquid level is too high;
The monitoring and feedback control system continuously monitors the liquid level of the ink return box and the working state of the ink return pump, monitors data in real time to adjust, records liquid level change and adjustment operation, and provides real-time feedback information for related personnel.
4. A method for adaptively controlling the rotational speed of an ink pump according to claim 3, wherein: the liquid level sensor and the ink return pump working state sensor monitor the liquid level change of the ink return box in real time, and when the liquid level exceeds a preset threshold value, the system detects an overflow signal;
In the system setting, a full-speed rotating speed v2 is preset, the rotating speed is usually the highest rotating speed which can be achieved by the ink pump, the ink pump running at full speed can discharge ink from the ink return box more quickly, and once an overflow signal of the ink return box is detected, the system immediately triggers the rotating speed switching control, and the rotating speed of the ink pump is increased from an initial rotating speed v1 to the full-speed rotating speed v2 through the control system;
And monitoring the ink return flow and the liquid level change, and continuously monitoring the ink return flow and the liquid level change of the ink return box after the rotating speed is increased to full speed, so that the ink can be rapidly discharged, and the liquid level is reduced to be within a normal range;
Once the ink return flow and the liquid level are restored to the normal range, the control system adjusts the rotating speed according to the detected data, so that the ink return flow and the liquid level are gradually restored to the stable working state.
5. The method for adaptively controlling the rotational speed of an ink pump according to claim 1, wherein: according to the step S6, the balance state is achieved, and the change range of the rotating speed and the ink return flow is set to be used as a stability judging condition, wherein the change range of the rotating speed and the flow is within +/-5%;
Continuously monitoring the rotating speed and the ink return flow of the ink pump by using a sensor, recording data, analyzing the monitored rotating speed and the ink return flow data of the ink pump, observing the change trend of the data, judging whether the rotating speed and the ink return flow of the ink pump are in an acceptable change range or not and tend to be stable according to a set stability judging condition, and if the data are kept stable for a certain time and have small fluctuation in the set range, considering that the system is in an equilibrium state;
Once the system is judged to reach an equilibrium state, verification and adjustment are performed, data are continuously monitored and analyzed, the ink pump rotating speed and the ink return flow can be ensured to control the flow of the ink in a self-adaptive mode, so that the change requirement of the printing ink quantity is met, if the change range of the rotating speed and the flow exceeds +/-5%, the system is considered to be in an unbalanced state, and parameters are required to be readjusted or whether the inspection equipment works normally or not is required to be inspected.
6. The method for adaptively controlling the rotational speed of an ink pump according to claim 5, wherein: the ink pump rotating speed is used for controlling the ink conveying speed and the ink flow by adjusting the ink pump rotating speed, comparing the difference between the actual output value and the expected target value through a PID control algorithm, calculating a control deviation, regulating the output of the control parameter according to the weights of the proportion, the integral and the derivative, determining the expected ink flow by setting the target value, acquiring the actual ink flow and the feedback signals of other parameters through the sensor,
Comparing the expected ink flow with the feedback signal, calculating a control deviation, namely the difference between the expected ink flow and the feedback signal, and calculating a control output quantity by using a PID control algorithm according to the control deviation, wherein the specific formula is as follows: [ u (t) =K_p\ cdot e (t) +K_i\ cdot \int\0 } { t } e (\tau) d\tau+K_d\ cdot \frac { de (t) } { dt } ]
Wherein, (u (t)) is a control output quantity, i.e., a rotational speed command, (e (t)) is a current control deviation, i.e., a difference between a target value and a feedback signal, (k_p), (k_i), and (k_d) are weight coefficients of a proportional term, an integral term, and a differential term, respectively, for adjusting a response characteristic of control;
And converting the calculated control output quantity into a command of the rotating speed of the ink pump, and regulating the rotating speed of the ink pump through a control system according to the rotating speed command.
7. An ink pump rotational speed self-adaptation control device, characterized in that: comprising the following steps: at least one processor, at least one memory and computer program instructions stored in the memory, which when executed by the processor, implement an ink pump rotational speed adaptive control method according to any one of claims 1-6.
8. A storage medium having stored thereon computer program instructions, which when executed by a processor, implement an ink pump rotational speed adaptive control method according to any one of claims 1-6.
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| CN202410330404.0A CN117984666A (en) | 2024-03-21 | 2024-03-21 | Ink pump rotating speed self-adaptive control method, device and storage medium |
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| CN202410330404.0A CN117984666A (en) | 2024-03-21 | 2024-03-21 | Ink pump rotating speed self-adaptive control method, device and storage medium |
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