CN106411158A - Novel piezoelectric ceramic driver power supply - Google Patents
Novel piezoelectric ceramic driver power supply Download PDFInfo
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- CN106411158A CN106411158A CN201611033514.2A CN201611033514A CN106411158A CN 106411158 A CN106411158 A CN 106411158A CN 201611033514 A CN201611033514 A CN 201611033514A CN 106411158 A CN106411158 A CN 106411158A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 230000000087 stabilizing effect Effects 0.000 abstract description 14
- 230000003321 amplification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from AC input or output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/157—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
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- Engineering & Computer Science (AREA)
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- Dc-Dc Converters (AREA)
Abstract
本发明公开了一种新型压电陶瓷驱动器电源，主要由串联型直流稳压电路与DC/DC变换电路组成，串联型直流稳压电路的输入电压由DC/DC变换电路的输出电压提供，通过AD转换器、单片机控制系统、PWM驱动器构成一个闭环控制系统，保证任意时刻DC/DC变换电路的输出比串联型直流稳压电路的输出高5V。本发明适用性强、功耗小、成本低、电路简单、稳定性高。
The invention discloses a novel piezoelectric ceramic driver power supply, which is mainly composed of a series-type DC voltage stabilizing circuit and a DC/DC conversion circuit. The input voltage of the series-type DC voltage stabilizing circuit is provided by the output voltage of the DC/DC conversion circuit. AD converter, single-chip microcomputer control system, and PWM driver form a closed-loop control system to ensure that the output of the DC/DC conversion circuit is 5V higher than the output of the series-type DC voltage regulator circuit at any time. The invention has strong applicability, low power consumption, low cost, simple circuit and high stability.
Description
技术领域technical field
本发明涉及一种新型的压电陶瓷驱动器电源，属于驱动电源技术领域。The invention relates to a novel piezoelectric ceramic driver power supply, belonging to the technical field of drive power supplies.
背景技术Background technique
现有压电陶瓷驱动电源的设计主要存在以下两个方面的问题：The design of existing piezoelectric ceramic driving power mainly has the following two problems:
1、现有的设计中大多数压电陶瓷电源采用直流电压放大式进行设计，存在效率低，功率管或者芯片功耗大，发热严重。1. In the existing design, most piezoelectric ceramic power supplies are designed with DC voltage amplification, which has low efficiency, large power consumption of power tubes or chips, and severe heat generation.
2、现在有的设计中也有采用开关电源控制方式，虽然提高了工作效率，但电源纹波输出大，在精度要求高的场合不适用。2. Some current designs also use switching power supply control methods. Although the work efficiency is improved, the power supply ripple output is large, which is not suitable for occasions with high precision requirements.
因此，有必要针对现有设计中压电陶瓷电源存在的适用性不强、功耗大、成本高、电路复杂以及稳定性不高等问题，提出改进方案。Therefore, it is necessary to propose an improvement plan for the problems of poor applicability, high power consumption, high cost, complex circuit and low stability in the existing design of the piezoelectric ceramic power supply.
发明内容Contents of the invention
本发明要解决的技术问题是：提供一种新型压电陶瓷驱动器电源，适用性强、功耗小、成本低、电路简单、稳定性高。The technical problem to be solved by the present invention is to provide a novel piezoelectric ceramic driver power supply, which has strong applicability, low power consumption, low cost, simple circuit and high stability.
本发明的技术方案如下：Technical scheme of the present invention is as follows:
一种新型压电陶瓷驱动器电源，包括相连接的DC/DC变换电路和串联型直流稳压电路。A novel piezoelectric ceramic driver power supply includes a connected DC/DC conversion circuit and a series DC voltage stabilizing circuit.
所述DC/DC变换电路的输出电压自动跟随串联型直流稳压电路的输出电压变化而变化，始终保持串联型直流稳压电路中调整管压降为5V。The output voltage of the DC/DC conversion circuit automatically follows the change of the output voltage of the series-type DC voltage stabilizing circuit, and the voltage drop of the adjusting tube in the series-type DC voltage stabilizing circuit is always kept at 5V.
所述DC/DC变换电路的电压输出端与通过AD转换器、单片机控制系统和PWM驱动器构成的闭环控制系统相连。The voltage output end of the DC/DC conversion circuit is connected with a closed-loop control system formed by an AD converter, a single-chip microcomputer control system and a PWM driver.
所述单片机控制系统的PWM控制控制算法为数字式PID算法。The PWM control algorithm of the single-chip microcomputer control system is a digital PID algorithm.
所述串联型直流稳压电路与DA转换器及单片机控制系统相连。The series-type DC voltage stabilizing circuit is connected with a DA converter and a single-chip microcomputer control system.
所述DC/DC变换电路的输入端与全桥整流及滤波电路、变压器相连。The input end of the DC/DC conversion circuit is connected with the full-bridge rectification and filter circuit and the transformer.
所述串联型直流稳压电路的误差放大三极管的集电极与包括由TL431构成的电流源相连。The collector of the error amplifying triode of the series-type direct current voltage stabilizing circuit is connected with a current source composed of TL431.
本发明中，AC220V电源输入后经过变压器、整流以及滤波后得到DC/DC变换电路的直流输入电压。该DC/DC变换电路的输入电压值由被控制的压电陶瓷设备的控制电压决定，经实验验证取比压电陶瓷设备的最高控制电压高20V即可。DC/DC变换电路的输出电压随着串联型直流稳压电路的输出电压的改变而改变，并保持在串联型直流稳压电路上的电压降为5V。串联型直流稳压电路的输出电压为一定数值范围的直流电压，驱动压电陶瓷设备进行工作，该电压可通过单片机控制系统和DA转换器进行调节。In the present invention, the DC input voltage of the DC/DC conversion circuit is obtained after the input of the AC220V power supply through a transformer, rectification and filtering. The input voltage value of the DC/DC conversion circuit is determined by the control voltage of the piezoelectric ceramic device to be controlled. It is verified by experiments that it should be 20V higher than the highest control voltage of the piezoelectric ceramic device. The output voltage of the DC/DC conversion circuit changes with the change of the output voltage of the series-type DC stabilizing circuit, and keeps the voltage drop on the series-type DC stabilizing circuit at 5V. The output voltage of the series-type DC voltage stabilizing circuit is a DC voltage within a certain value range, which drives piezoelectric ceramic equipment to work, and the voltage can be adjusted by a single-chip microcomputer control system and a DA converter.
另一方面，串联型直流稳压电路的输入电压由DC/DC变换电路的输出电压提供，在本发明中通过AD转换器、单片机控制系统、PWM驱动器构成一个闭环控制系统，保证任意时刻DC/DC变换电路的输出比串联型直流稳压电路的输出高5V，从而实现在串联型直流稳压电路的效率得到提高。On the other hand, the input voltage of the series-type DC stabilizer circuit is provided by the output voltage of the DC/DC conversion circuit. In the present invention, a closed-loop control system is formed by an AD converter, a single-chip microcomputer control system, and a PWM driver to ensure that DC/DC at any time The output of the DC conversion circuit is 5V higher than the output of the series-type DC voltage stabilizing circuit, so that the efficiency of the series-type DC voltage stabilizing circuit is improved.
为保证电源的动态性能，加入了电容放电回路，对压电陶瓷设备的电荷进行有效的放电。In order to ensure the dynamic performance of the power supply, a capacitor discharge circuit is added to effectively discharge the charge of the piezoelectric ceramic device.
本发明电路方案采用了DC/DC变换电路提高了电路效率，采用了串联型直流稳压电路的驱动方式有效的降低了电路的纹波。The circuit scheme of the present invention adopts a DC/DC conversion circuit to improve the circuit efficiency, and adopts a driving mode of a series direct current voltage stabilizing circuit to effectively reduce the ripple of the circuit.
进一步，本发明电源系统加入了键盘电路、液晶显示器使得本发的电源系统的人机交互、实用性更强。Further, the power supply system of the present invention adds a keyboard circuit and a liquid crystal display to make the human-computer interaction and practicability of the power supply system of the present invention stronger.
进一步，本发明压电陶瓷驱动器电源中串联型直流稳压电路的误差放大三极管的集电极放大电阻改进为由TL431组成的恒流源，以提高放大倍数，从而改善纹波，另一方面输入电压范围大，使本发明电源应用性能更好。Further, in the piezoelectric ceramic driver power supply of the present invention, the collector amplification resistor of the error amplification transistor of the series-type DC voltage regulator circuit is improved to a constant current source composed of TL431 to increase the magnification, thereby improving the ripple. On the other hand, the input voltage The large range makes the application performance of the power supply of the present invention better.
本发明中压电陶瓷驱动器电源的设计的电路方案为DC/DC变换电路与串联型直流稳压电路相结合，提高效率，降低纹波。The design circuit scheme of the piezoelectric ceramic driver power supply in the present invention is a combination of a DC/DC conversion circuit and a series-type DC voltage stabilizing circuit to improve efficiency and reduce ripple.
压电陶瓷驱动器电源的设计DC/DC变换电路输出由PWM实现，所述单片机控制系统的PWM控制控制算法为“数字式PID”算法。DC/DC变换电路的电压输出算法由单片机系统完成的“数字式PID”算法，使得DC/DC变换电路的输出与串联型直流稳压电路输出始终保持5V的电压差。The design of the piezoelectric ceramic driver power supply DC/DC conversion circuit output is realized by PWM, and the PWM control algorithm of the single-chip microcomputer control system is a "digital PID" algorithm. The voltage output algorithm of the DC/DC conversion circuit is a "digital PID" algorithm completed by the single-chip computer system, so that the output of the DC/DC conversion circuit and the output of the series DC voltage regulator circuit always maintain a voltage difference of 5V.
本发明压电陶瓷驱动器电源的设计所述单片机控制系统为STC12C5A60S2。Design of the piezoelectric ceramic driver power supply of the present invention The said single-chip microcomputer control system is STC12C5A60S2.
1)本发明压电陶瓷驱动器电源的设计设定输出电压范围0～150V，通过改变反馈电阻很容易实现最高输出电压的变化，以适应不同的压电陶瓷设备；1) The design of the piezoelectric ceramic driver power supply of the present invention sets the output voltage range from 0 to 150V, and the change of the highest output voltage can be easily realized by changing the feedback resistance to adapt to different piezoelectric ceramic devices;
2)本发明压电陶瓷驱动器电源的设计经实验验证输出效率达60％以上，现有的设计中效率为30％左右，提高了一倍以上。2) The design of the piezoelectric ceramic driver power supply of the present invention has been verified by experiments to have an output efficiency of more than 60%, while the efficiency in the existing design is about 30%, more than doubled.
3)本发明压电陶瓷驱动器电源的设计经实验验证输出电源纹波最高为10MV，保证了电源纹波电压低的特点。3) The design of the power supply of the piezoelectric ceramic driver of the present invention has been verified by experiments that the output power ripple is up to 10MV, which ensures the low ripple voltage of the power supply.
4)本发明压电陶瓷驱动器电源的设计加入键盘电路、液晶显示器使得本发的电源系统的人机交互界面更友好、实用性更强。4) The design of the piezoelectric ceramic driver power supply of the present invention adds a keyboard circuit and a liquid crystal display to make the human-computer interaction interface of the power supply system of the present invention more friendly and more practical.
附图说明Description of drawings
图1是本发明的组成示意框图；Fig. 1 is a schematic block diagram of the composition of the present invention;
图2是本发明的DC/DC变换电路与PWM驱动电路图；Fig. 2 is a DC/DC conversion circuit and a PWM drive circuit diagram of the present invention;
图3是本发明的串联型直流稳压电路图。Fig. 3 is a circuit diagram of the series type DC voltage regulator of the present invention.
具体实施方式detailed description
如图1所示，AC220V电源输入后经过变压器、整流以及滤波后得到DC/DC变换电路的直流输入电压。该DC/DC变换电路的输入电压值由被控制的压电陶瓷设备的控制电压决定。DC/DC变换电路的输出电压随着串联稳压直流电路的输出电压的改变而改变，并保持在串联稳压直流电路上的电压降为5V。串联稳压直流电路的输出电压为一定数值范围的直流电压，驱动压电陶瓷设备进行工作，该电压可通过单片机控制系统和DA转换器进行调节。另一方面，串联稳压直流电路的输入电压由DC/DC变换电路的输出电压提供，在本发明中通过AD转换器、单片机控制系统、PWM驱动器构成一个闭环控制系统，保证任意时刻DC/DC变换电路的输出比串联稳压直流电路的输出高5V，从而实现在串联稳压直直流电路的效率得到提高。为保证电源的动态性能，加入了电容放电回路，对压电陶瓷器件内的电荷进行有效的放电。As shown in Figure 1, the DC input voltage of the DC/DC conversion circuit is obtained after the AC220V power supply is input through a transformer, rectified and filtered. The input voltage value of the DC/DC conversion circuit is determined by the control voltage of the controlled piezoelectric ceramic device. The output voltage of the DC/DC conversion circuit changes with the change of the output voltage of the series regulated direct current circuit, and keeps the voltage drop on the series regulated direct current circuit at 5V. The output voltage of the series stabilized DC circuit is a DC voltage within a certain value range, which drives the piezoelectric ceramic equipment to work, and the voltage can be adjusted by a single-chip microcomputer control system and a DA converter. On the other hand, the input voltage of the series stabilized DC circuit is provided by the output voltage of the DC/DC conversion circuit. In the present invention, a closed-loop control system is formed by the AD converter, the single-chip microcomputer control system, and the PWM driver to ensure that the DC/DC The output of the conversion circuit is 5V higher than the output of the series stabilized DC circuit, so that the efficiency of the series stabilized DC circuit is improved. In order to ensure the dynamic performance of the power supply, a capacitor discharge circuit is added to effectively discharge the charges in the piezoelectric ceramic device.
如图2所示为DC/DC变换与PWM驱动电路图，VIN为整流滤波后的直流电压输入端口，DC/DC电路采用传统的电路结构，主要由Q5、L1、C5和D3构成。通过PWM波形来调节DC/DC变换电路的输出电压V1的大小。PWM驱动电路主要由IR2101芯片、D2、C4和R9组成；来自单片机的PWM信号从IR2101的2脚输入，经过IR2101后输出幅度较大的PWM信号，驱动MOS管Q5进行工作。Figure 2 shows the DC/DC conversion and PWM drive circuit diagram. VIN is the rectified and filtered DC voltage input port. The DC/DC circuit adopts a traditional circuit structure and is mainly composed of Q5, L1, C5 and D3. The magnitude of the output voltage V1 of the DC/DC conversion circuit is adjusted through the PWM waveform. The PWM drive circuit is mainly composed of IR2101 chip, D2, C4 and R9; the PWM signal from the microcontroller is input from pin 2 of IR2101, and after passing through IR2101, it outputs a PWM signal with a large amplitude to drive the MOS tube Q5 to work.
如图3所示为串联型直流稳压电路，该电路与传统的串联型直流稳压电路区别在于将传统电路中误差放大三极管Q4集电极上的电阻改进为由稳压芯片TL431芯片U2、电阻R1\R2、三极管Q1构成的电流源代替。由于TL431的工作电流范围宽，因此改进后的串联型直流稳压电路的输入电压V2范围宽。同时采用电流源作为三极管Q4的放大电阻，理论上等效电阻为无穷大，因此放大倍数为无穷大，进一步改善电路的输出纹波。As shown in Figure 3, it is a series-type DC voltage regulator circuit. The difference between this circuit and the traditional series-type DC voltage regulator circuit is that the resistance on the collector of the error amplifier transistor Q4 in the traditional circuit is improved to be composed of the voltage regulator chip TL431 chip U2, the resistor The current source composed of R1\R2 and transistor Q1 is replaced. Because the operating current range of TL431 is wide, the input voltage V2 range of the improved series-type DC voltage regulator circuit is wide. At the same time, the current source is used as the amplifying resistor of the triode Q4, and the theoretical equivalent resistance is infinite, so the amplification factor is infinite, which further improves the output ripple of the circuit.
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| CN106647902A (en) * | 2017-03-02 | 2017-05-10 | 国家电网公司 | Novel synchronous voltage-reducing voltage stabilizer |
| CN110719039A (en) * | 2019-07-04 | 2020-01-21 | 北京群菱能源科技有限公司 | Novel micro-grid energy storage device power supply system |
| CN114356007A (en) * | 2021-12-06 | 2022-04-15 | 武汉华中天经通视科技有限公司 | High-voltage high-power piezoelectric ceramic driving circuit |
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