CN108469290B - A micro-fluid injection and quality verification controller - Google Patents
A micro-fluid injection and quality verification controller Download PDFInfo
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- CN108469290B CN108469290B CN201810270061.8A CN201810270061A CN108469290B CN 108469290 B CN108469290 B CN 108469290B CN 201810270061 A CN201810270061 A CN 201810270061A CN 108469290 B CN108469290 B CN 108469290B
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- 239000012530 fluid Substances 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 238000012795 verification Methods 0.000 title claims abstract description 16
- 238000005303 weighing Methods 0.000 claims abstract description 24
- 230000003993 interaction Effects 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 230000002452 interceptive effect Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004401 flow injection analysis Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
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Abstract
本发明涉及微流量喷射质量技术领域，尤其是一种微量流体喷射及质量校验控制器，包括主控单元、喷嘴驱动单元、人机交互接口、称重单元接口及气压控制单元组成，所述称重单元接口连接主控单元的I/O端，所述人机交互接口连接主控单元的I/O端，所述喷嘴驱动单元的控制端连接主控单元的输出端，所述气压控制单元的控制端连接主控单元的输出端，本发明能够实现精确喷射流体质量，代替了人工操作，提高了生产效率。
The present invention relates to the technical field of micro-flow injection quality, in particular to a micro-fluid injection and quality verification controller, which consists of a main control unit, a nozzle drive unit, a human-computer interaction interface, a weighing unit interface and an air pressure control unit. The weighing unit interface is connected to the I/O end of the main control unit, the human-computer interaction interface is connected to the I/O end of the main control unit, the control end of the nozzle driving unit is connected to the output end of the main control unit, and the air pressure control The control end of the unit is connected to the output end of the main control unit, and the invention can realize accurate injection fluid quality, replace manual operation, and improve production efficiency.
Description
技术领域technical field
本发明涉及制药工程、生物工程、医学、微机械制造对流体喷射质量要求准确、稳定的技术领域，具体领域为一种微量流体喷射及质量校验控制器。The invention relates to the technical field of pharmaceutical engineering, bioengineering, medicine and micro-mechanical manufacturing which require accurate and stable fluid injection quality, and the specific field is a micro-fluid injection and quality verification controller.
背景技术Background technique
微喷技术是一种增材制造技术，广泛应用于微机械制造、制药、生物工程等领域。在一些领域中，对喷射出流体质量要求非常严格，需要在生产过程中多次校验喷射的流体质量，以达到产品精确、稳定的目标。目前喷射控制及校验技术是通过人工调节参数来达到对喷射流体质量的校验，校验完成后，通过人工计算，重新制定喷射方案，确定喷射流体总质量。这样人工控制、校验、计算等方式既浪费时间又浪费精力，降低生产效率。目前需要一种新的校验控制技术及相对应的控制仪器，代替低效的人工校验方式。Microjet technology is a kind of additive manufacturing technology, which is widely used in micromachine manufacturing, pharmaceutical, bioengineering and other fields. In some fields, the requirements for the quality of the injected fluid are very strict, and the quality of the injected fluid needs to be checked many times during the production process to achieve the goal of accurate and stable products. The current injection control and calibration technology is to manually adjust the parameters to achieve the calibration of the injection fluid quality. After the calibration is completed, the injection plan is re-formulated through manual calculations to determine the total mass of the injection fluid. In this way, manual control, verification, calculation and other methods are a waste of time and energy, and reduce production efficiency. At present, a new calibration control technology and corresponding control instruments are needed to replace the inefficient manual calibration method.
发明内容Contents of the invention
本发明的目的在于提供一种微量流体喷射及质量校验控制器，以解决现有技术中人工操作造成的效率底下，易产生误差的问题。The purpose of the present invention is to provide a micro-fluid injection and quality verification controller to solve the problems of low efficiency and easy error caused by manual operation in the prior art.
为实现上述目的，本发明提供如下技术方案：一种微量流体喷射及质量校验控制器，包括主控单元、喷嘴驱动单元、人机交互接口、称重单元接口及气压控制单元组成，所述称重单元接口连接主控单元的I/O端，所述人机交互接口连接主控单元的I/O端，所述喷嘴驱动单元的控制端连接主控单元的输出端，所述气压控制单元的控制端连接主控单元的输出端。In order to achieve the above object, the present invention provides the following technical solutions: a trace fluid injection and quality verification controller, which consists of a main control unit, a nozzle drive unit, a human-computer interaction interface, a weighing unit interface and an air pressure control unit. The weighing unit interface is connected to the I/O end of the main control unit, the human-computer interaction interface is connected to the I/O end of the main control unit, the control end of the nozzle drive unit is connected to the output end of the main control unit, and the air pressure control The control terminal of the unit is connected with the output terminal of the main control unit.
优选的，所述称重单元接口为称重传感器，所述称重传感器的信号端连接主控单元的输入端，用于对于喷射出的流体进行称重，将结果反馈给主控单元。Preferably, the weighing unit interface is a weighing sensor, and the signal end of the weighing sensor is connected to the input end of the main control unit for weighing the ejected fluid and feeding back the result to the main control unit.
优选的，所述人机交互接口为人机交互触控显示器，所述人机交互触控显示器与主控单元I/O通讯连接，用于主控单元与显示器之间的数据信息交互和数据调节。Preferably, the human-computer interaction interface is a human-computer interactive touch display, and the human-computer interactive touch display is connected to the main control unit through I/O communication, and is used for data information interaction and data adjustment between the main control unit and the display. .
优选的，所述喷嘴驱动单元为气动膜片式喷嘴器，通过主控单元和气压控制单元之间的调节，使喷嘴驱动单元实现喷嘴的打开和关闭。Preferably, the nozzle driving unit is a pneumatic diaphragm nozzle, and the nozzle driving unit realizes the opening and closing of the nozzle through the adjustment between the main control unit and the air pressure control unit.
优选的，所述气压控制单元包括数模转换芯片、基准电压芯片、第一运算放大器、第二运算放大器、第三运算放大器和第四运算放大器，所述数模转换芯片的输入端连接主控单元的输出端，数模转换芯片的第一输出端连接第一运算放大器的负极输入端，第一运算放大器输出端连接第二运算放大器的负极输入端，第二运算放大器的输出端连接外部比例阀的第一控制端，所述基准电压芯片的输出端连接数模转换芯片的基准输入端，数模转换芯片的第二输出端连接第三运算放大器的负极输入端，第三运算放大器的输出端连接第四运算放大器的负极输入端，第四运算放大器的输出端连接外部比例阀的跌控制端，所述第一运算放大器、第二运算放大器、第三运算放大器和第四运算放大器的正极输入端均接地连接。Preferably, the air pressure control unit includes a digital-to-analog conversion chip, a reference voltage chip, a first operational amplifier, a second operational amplifier, a third operational amplifier, and a fourth operational amplifier, and the input end of the digital-to-analog conversion chip is connected to the main control The output terminal of the unit, the first output terminal of the digital-to-analog conversion chip is connected to the negative input terminal of the first operational amplifier, the output terminal of the first operational amplifier is connected to the negative input terminal of the second operational amplifier, and the output terminal of the second operational amplifier is connected to the external proportional The first control end of the valve, the output end of the reference voltage chip is connected to the reference input end of the digital-to-analog conversion chip, the second output end of the digital-to-analog conversion chip is connected to the negative input end of the third operational amplifier, and the output of the third operational amplifier terminal is connected to the negative input terminal of the fourth operational amplifier, the output terminal of the fourth operational amplifier is connected to the drop control terminal of the external proportional valve, and the positive poles of the first operational amplifier, the second operational amplifier, the third operational amplifier and the fourth operational amplifier The inputs are all connected to ground.
优选的，所述第一运算放大器、第二运算放大器、第三运算放大器和第四运算放大器的负极输入端上均串联有保护电阻。Preferably, protective resistors are connected in series to the negative input terminals of the first operational amplifier, the second operational amplifier, the third operational amplifier and the fourth operational amplifier.
优选的，所述数模转换芯片为双路8位DA芯片。Preferably, the digital-to-analog conversion chip is a dual-channel 8-bit DA chip.
优选的，所述基准电压芯片为10V基准电压输出芯片。Preferably, the reference voltage chip is a 10V reference voltage output chip.
优选的，所述第二运算放大器的输出端与负极输入端之间和第四算放大器的输出端与负极输入端之间均串联有反馈电阻，所述的反馈电阻上均并联有电容。Preferably, feedback resistors are connected in series between the output terminal of the second operational amplifier and the negative input terminal and between the output terminal of the fourth operational amplifier and the negative input terminal, and capacitors are connected in parallel to the feedback resistors.
优选的，所述主控单元为主控芯片。Preferably, the main control unit is a main control chip.
与现有技术相比，本发明的有益效果是：填补了目前流体喷射领域中喷射流体质量及校验控制器的空白，将该仪器应用于气动膜片式喷嘴喷射系统中，能够实现精确喷射流体质量；能够自动匹配用户需求单滴质量0.01mg以上且精度在3％以内的精确结果，从而代替人工校验流体质量，提高生产效率。Compared with the prior art, the beneficial effect of the present invention is that it fills the blank of the jet fluid quality and calibration controller in the current field of fluid jetting, applies the instrument to the pneumatic diaphragm nozzle jetting system, and can realize precise jetting Fluid quality: It can automatically match the accurate results with a single drop mass of more than 0.01mg and an accuracy within 3% required by the user, thereby replacing manual calibration of fluid quality and improving production efficiency.
附图说明Description of drawings
图1为本发明的控制器系统原理框图；Fig. 1 is a functional block diagram of the controller system of the present invention;
图2为本发明的气压控制单元电路原理图；Fig. 2 is the schematic diagram of the air pressure control unit circuit of the present invention;
图3为本发明的控制器主体流程图；Fig. 3 is the flow chart of the controller main body of the present invention;
图4为本发明的喷嘴驱动流程图。Fig. 4 is a flow chart of nozzle driving in the present invention.
图中：1、主控单元；2、喷嘴驱动单元；3、人机交互接口；4、称重单元接口；5、气压控制单元；6、数模转换芯片；7、基准电压芯片；8、第一运算放大器；9、第二运算放大器；10、第三运算放大器；11、第四运算放大器；12、保护电阻；13、反馈电阻；14、电容。In the figure: 1. Main control unit; 2. Nozzle drive unit; 3. Human-computer interaction interface; 4. Weighing unit interface; 5. Air pressure control unit; 6. Digital-to-analog conversion chip; 7. Reference voltage chip; 8. The first operational amplifier; 9, the second operational amplifier; 10, the third operational amplifier; 11, the fourth operational amplifier; 12, the protection resistor; 13, the feedback resistor; 14, the capacitor.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
请参阅图1至4，本发明提供一种技术方案：一种微量流体(所述的流体为液体和胶体)喷射及质量校验控制器，包括主控单元1、喷嘴驱动单元2、人机交互接口3、称重单元接口4及气压控制单元5组成，所述称重单元接口 4连接主控单元1的I/O端，所述人机交互接口3连接主控单元1的I/O端，所述喷嘴驱动单元2的控制端连接主控单元1的输出端，所述气压控制单元5 的控制端连接主控单元1的输出端。Please refer to Fig. 1 to 4, the present invention provides a kind of technical scheme: a kind of trace fluid (the described fluid is liquid and colloid) injection and quality checking controller, comprise main control unit 1, nozzle drive unit 2, man-machine Composed of an interactive interface 3, a weighing unit interface 4 and an air pressure control unit 5, the weighing unit interface 4 is connected to the I/O terminal of the main control unit 1, and the human-computer interaction interface 3 is connected to the I/O of the main control unit 1 terminal, the control terminal of the nozzle drive unit 2 is connected to the output terminal of the main control unit 1 , and the control terminal of the air pressure control unit 5 is connected to the output terminal of the main control unit 1 .
所述称重单元接口4为称重传感器，所述称重传感器的信号端连接主控单元1的输入端，用于对于喷射出的流体进行称重，将结果反馈给主控单元1，称重传感器型号为SartoriusWZA224-L，用于对喷射出的流体进行称重，将结果反馈给控制器，给控制器的下一步动作提供数据支撑。The weighing unit interface 4 is a weighing sensor, the signal end of the weighing sensor is connected to the input end of the main control unit 1, and is used to weigh the ejected fluid, and feed back the result to the main control unit 1, weighing The heavy sensor model is SartoriusWZA224-L, which is used to weigh the ejected fluid, feed back the result to the controller, and provide data support for the controller's next action.
所述人机交互接口3为人机交互触控显示器，所述人机交互触控显示器与主控单元1I/O通讯连接，用于主控单元1与显示器之间的数据信息交互和数据调节。The human-computer interaction interface 3 is a human-computer interactive touch display, and the human-computer interactive touch display is connected to the main control unit 1 through I/O communication, and is used for data information exchange and data adjustment between the main control unit 1 and the display.
所述喷嘴驱动单元2为气动膜片式喷嘴器，通过主控单元1和气压控制单元5之间的调节，使喷嘴驱动单元2实现喷嘴的打开和关闭。The nozzle driving unit 2 is a pneumatic diaphragm nozzle, and the nozzle driving unit 2 can realize the opening and closing of the nozzle through the adjustment between the main control unit 1 and the air pressure control unit 5 .
所述气压控制单元5包括数模转换芯片6、基准电压芯片7、第一运算放大器8、第二运算放大器9、第三运算放大器10和第四运算放大器11，所述数模转换芯片6的输入端连接主控单元1的输出端，数模转换芯片6的第一输出端连接第一运算放大器8的负极输入端，第一运算放大器8输出端连接第二运算放大器9的负极输入端，第二运算放大器9的输出端连接外部比例阀的第一控制端，所述基准电压芯片7的输出端连接数模转换芯片6的基准输入端，数模转换芯片6的第二输出端连接第三运算放大器10的负极输入端，第三运算放大器10的输出端连接第四运算放大器11的负极输入端，第四运算放大器11的输出端连接外部比例阀的跌控制端，所述第一运算放大器8、第二运算放大器9、第三运算放大器10和第四运算放大器11的正极输入端均接地连接，比例阀使用SMC公司的ITV1050-312L系列，可以通过0～10V电压输入信号实现对气压力的连续、无极调节。The air pressure control unit 5 includes a digital-to-analog conversion chip 6, a reference voltage chip 7, a first operational amplifier 8, a second operational amplifier 9, a third operational amplifier 10 and a fourth operational amplifier 11, and the digital-to-analog conversion chip 6 The input end is connected to the output end of the main control unit 1, the first output end of the digital-to-analog conversion chip 6 is connected to the negative input end of the first operational amplifier 8, and the output end of the first operational amplifier 8 is connected to the negative input end of the second operational amplifier 9, The output terminal of the second operational amplifier 9 is connected to the first control terminal of the external proportional valve, the output terminal of the reference voltage chip 7 is connected to the reference input terminal of the digital-to-analog conversion chip 6, and the second output terminal of the digital-to-analog conversion chip 6 is connected to the first control terminal. The negative input terminal of the three operational amplifiers 10, the output terminal of the third operational amplifier 10 is connected to the negative input terminal of the fourth operational amplifier 11, and the output terminal of the fourth operational amplifier 11 is connected to the drop control terminal of the external proportional valve. The positive input ends of the amplifier 8, the second operational amplifier 9, the third operational amplifier 10 and the fourth operational amplifier 11 are all connected to the ground, and the proportional valve uses the ITV1050-312L series of SMC Company, which can realize the gas-to-air adjustment through the 0-10V voltage input signal. Continuous and stepless adjustment of pressure.
所述第一运算放大器8、第二运算放大器9、第三运算放大器10和第四运算放大器11的负极输入端上均串联有保护电阻12。The negative input ends of the first operational amplifier 8 , the second operational amplifier 9 , the third operational amplifier 10 and the fourth operational amplifier 11 are all connected in series with protective resistors 12 .
所述数模转换芯片6为双路8位DA芯片。The digital-to-analog conversion chip 6 is a dual-channel 8-bit DA chip.
所述基准电压芯片7为10V基准电压输出芯片。The reference voltage chip 7 is a 10V reference voltage output chip.
所述第二运算放大器9的输出端与负极输入端之间和第四算放大器的输出端与负极输入端之间均串联有反馈电阻13，所述的反馈电阻13上均并联有电容14。Feedback resistors 13 are connected in series between the output terminal of the second operational amplifier 9 and the negative input terminal and between the output terminal of the fourth operational amplifier and the negative input terminal, and capacitors 14 are connected in parallel to the feedback resistors 13 .
根据图2所示，U1为双路8位DA芯片，U2为基准电压芯片7，提供10V 的基准电压Vref，A1～A4为运算放大器。通过主控芯片的数字量输入控制，适当调节运算放大器A2、A4的反馈电阻13，可以实现0～10V的连续电压输出，从而调节比例阀输出端气压。比例阀最小气压调节量：As shown in FIG. 2 , U1 is a dual-channel 8-bit DA chip, U2 is a reference voltage chip 7 that provides a reference voltage V ref of 10V, and A1-A4 are operational amplifiers. Through the digital input control of the main control chip, the feedback resistors 13 of the operational amplifiers A2 and A4 can be properly adjusted to achieve a continuous voltage output of 0-10V, thereby adjusting the air pressure at the output end of the proportional valve. Proportional valve minimum air pressure adjustment:
Padj＝Pmax/(28-1)；P adj =P max /(2 8 -1);
其中，Padj为最小气压调节量(单位PSI),Pmax最大调节气压上限。根据调研，目前大部分流体在气压为45PSI以下均可以驱动喷出。因此当Pmax为 45PSI时可以实现最小气压调节精度为0.18PSI，达到最小0.01mg单滴质量的气压条件要求。Wherein, P adj is the minimum air pressure adjustment amount (in PSI), and P max is the maximum air pressure adjustment upper limit. According to research, most of the fluids can be ejected when the air pressure is below 45PSI. Therefore, when P max is 45PSI, the minimum air pressure adjustment accuracy can be 0.18PSI, and the air pressure condition requirement of the minimum 0.01mg single drop mass can be achieved.
所述主控单元1为主控芯片。The main control unit 1 is a main control chip.
根据图3所示，控制器主体软件主要功能是实现喷嘴驱动、质量校验、数据通信等功能之间的协商调度。串口接收程序不断接收数据及解析用户命令，执行用户功能。串口数据发送程序检测是否有数据并执行发送命令；匹配目标值程序根据目标数据，与初始值拟合成曲线，通过不断的拟合逼近，不断调节流体供给端气压，最终实现用户的质量需求，并将最终结果返回给上位机。As shown in Figure 3, the main function of the main software of the controller is to realize the negotiation and scheduling among functions such as nozzle driving, quality verification, and data communication. The serial port receiving program continuously receives data and parses user commands to execute user functions. The serial port data sending program detects whether there is data and executes the sending command; the matching target value program fits a curve with the initial value according to the target data, and through continuous fitting and approximation, continuously adjusts the air pressure of the fluid supply end, and finally realizes the user's quality requirements. And return the final result to the host computer.
根据图4所示，喷嘴驱动软件实现流体滴数、流体喷射、质量校验及喷嘴开、闭阀时间的控制。当接收到数据并解析为喷嘴驱动命令后，驱动软件根据用户参数计算出延时时间；通过对WZA224-L型电子秤称重数据研究发现，在喷完流体后静置某一特定时间后称重结果相对准确，因此定时器用来定时此特定延时时间，以获得准确结果。驱动脉冲的数量及占空比决定流体的滴数及单滴质量，由用户输入参数决定。当延时时间结束后执行称重指令，返回测量值。As shown in Figure 4, the nozzle driver software realizes the control of the number of fluid droplets, fluid injection, quality verification and nozzle opening and closing time. After receiving the data and analyzing it as a nozzle drive command, the driver software calculates the delay time according to the user parameters; through the research on the weighing data of the WZA224-L electronic scale, it is found that after spraying the fluid and standing for a certain period of time, the weighing The heavy result is relatively accurate, so the timer is used to time this specific delay time to obtain accurate results. The number of driving pulses and the duty cycle determine the number of drops of fluid and the quality of a single drop, which are determined by user input parameters. When the delay time is over, execute the weighing command and return the measured value.
人机交互是系统的输入和输出窗口，用户可以通过此界面向控制器输入命令及数据。人机交互界面系统界面分为点胶模式和校验模式。通过界面用户可以设置滴数、流体气压、喷嘴气压等、喷嘴开闭阀时间；用户可以输入匹配目标值，执行匹配程序，在匹配过程中界面会实时显示匹配结果，直至匹配成功或失败。Human-computer interaction is the input and output window of the system, and the user can input commands and data to the controller through this interface. The human-computer interaction interface system interface is divided into dispensing mode and calibration mode. Through the interface, users can set the number of drops, fluid air pressure, nozzle air pressure, etc., and nozzle opening and closing valve time; users can input the matching target value and execute the matching program. During the matching process, the interface will display the matching results in real time until the matching is successful or failed.
对控制器进行质量校验及匹配验证。保持喷嘴气压38PSI恒定不变，开、闭阀时间固定，在常温条件下，使用FH8006型号胶水作为供给原料，对系统进行匹配实验。实验数据如表1所示。Carry out quality verification and matching verification on the controller. Keep the nozzle air pressure at 38PSI constant, and the opening and closing time of the valve is fixed. Under normal temperature conditions, use FH8006 type glue as the supply material to conduct matching experiments on the system. The experimental data are shown in Table 1.
表1实验数据Table 1 Experimental data
由表1数据可得，匹配实验可以匹配目标值为0.01mg及以上的用户要求，匹配次数均在10次以下且误差均为3％以内，满足微滴喷射领域自动化应用场合。It can be obtained from the data in Table 1 that the matching experiment can match user requirements with a target value of 0.01 mg and above, and the number of matching times is less than 10 and the error is within 3%, which meets the requirements of automation applications in the field of droplet ejection.
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.
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