Voltage stabilization control device and control method for high-voltage driving system of piezoelectric wave front corrector

Abstract

The invention provides a voltage stabilization control device and method for a high-voltage driving system of a piezoelectric wave front corrector. The device comprises an upper computer control device, a DA converter, a high-voltage amplifier, a power supply and a voltage control module, the power supply provides stable direct-current positive and negative high-voltage power supply and low-voltage power supply for the high-voltage amplifier; the DA converter receives a DM control command sent by the upper computer control device and provides an analog signal for the high-voltage amplifier after DA conversion, and the high-voltage amplifier converts the analog signal into an analog high-voltage signal and provides current energy to drive the piezoelectric wave front corrector to work; the voltage control module enables low voltage to control high voltage when the power supply is turned on and turned off, so that the power supply voltage is stable. According to the invention, the stability of a high-voltage driving system of the piezoelectric wave front corrector is effectively improved, the high-output quality requirement of a self-adaptive optical system for high-voltage driving is met, the high-order phase difference correction effect of the piezoelectric wave front corrector for correcting distorted wavefront is improved, and the energy transmission efficiency is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply voltage stabilization, and in particular to a voltage stabilization control device and a control method for a high-voltage driving system of a piezoelectric wavefront corrector. Background Art

[0002] With the continuous development of optical imaging technology, piezoelectric wavefront corrector, as a new type of optical element, has broad application prospects. Piezoelectric wavefront corrector is used to correct the phase distortion of the light beam to improve the quality of optical imaging. It is based on the piezoelectric effect and controls the shape change of the piezoelectric crystal to adjust the optical path difference when the light beam passes through the crystal, thereby achieving subtle adjustments to optical imaging.

[0003] The piezoelectric wavefront corrector adaptive high-voltage drive system does not use a simple and mature voltage stabilization method. The dual switch control is easy to touch by mistake during actual operation, and the high voltage is turned on by mistake first to generate a sudden voltage, thereby damaging the wavefront corrector. In addition, the startup and shutdown process is complicated and cumbersome, which is inconvenient. Summary of the invention

[0004] Based on this, it is necessary to provide a voltage stabilizing control device and a control method for a high-voltage driving system of a piezoelectric wavefront corrector in order to address the above-mentioned technical problems.

[0005] A voltage stabilizing control device for a high-voltage driving system of a piezoelectric wavefront corrector, comprising: a host computer control device, a DA converter, a high-voltage amplifier, a power supply and a voltage control module;

[0006] The host computer control device is communicatively connected to the DA converter, the DA converter is communicatively connected to the high-voltage amplifier, the power supply is communicatively connected to the high-voltage amplifier, and the voltage control module is communicatively connected to the power supply; the power supply provides stable DC positive and negative high-voltage power and low-voltage power for the high-voltage amplifier; the DA converter receives the DM control command sent by the host computer control device, and provides an analog signal to the high-voltage amplifier after DA conversion, the high-voltage amplifier converts the analog signal into an analog high-voltage signal, and provides current energy to drive the piezoelectric wavefront corrector to work; the voltage control module controls the high voltage at a low voltage when the power supply is turned on and off, so that the power supply voltage of the power supply is stable.

[0007] In one embodiment, the voltage control module includes: a high voltage control module and a low voltage control module; wherein the high voltage control module and the low voltage control module are in communication connection;

[0008] The high-voltage control module includes: a first power input module, a time delay relay, a power filter, a rectifier bridge, a capacitor energy storage module, a high-voltage power supply, a magnetic ring filter device, and a first power output module;

[0009] The low voltage control module includes: a second power input module, a low voltage power supply, an energy storage capacitor module and a second power output module.

[0010] In one embodiment, the voltage control module controls the high voltage by making the low voltage control the high voltage when the power supply is turned on and off so that the power supply voltage is stable, including:

[0011] When the system is turned on, the low-voltage power supply is turned on, and the energy storage capacitor module is charged; the first power supply inputs the 220vAC power supply into the time delay relay to delay power on; after being filtered by the power filter, the AC power is converted into DC power through the rectifier bridge, and the DC power is rushed into the capacitor energy storage module, and the capacitor energy storage module outputs a voltage signal; the voltage signal is input into the high-voltage power supply, and the filtered voltage is obtained after being filtered by the magnetic ring filter device, and the filtered voltage is output through the first power supply output module. The low voltage has been turned on before the high voltage is powered on, realizing the low voltage control high voltage function;

[0012] When the system is shut down, the high-voltage power supply is turned off, and the low-voltage power supply continues to supply power to the DA converter through the energy storage capacitor module after the system is powered off until the power is exhausted. Before the high-voltage power supply is powered off, the low-voltage power supply is still working, realizing the low-voltage control high-voltage function, so that the power supply voltage of the power supply is stable.

[0013] In one embodiment, converting AC power to DC power through the rectifier bridge includes:

[0014] The rectifier bridge converts 220V AC power into 310V DC power.

[0015] In one embodiment, the voltage signal is input into the high voltage power supply, and the filtered voltage is obtained after being filtered by the magnetic ring filter device, including:

[0016] The high voltage power supply inputs 310V DC and outputs ±525V DC.

[0017] In one embodiment, it also includes:

[0018] The low voltage power supply inputs 220V AC power and outputs ±9V DC power.

[0019] A voltage stabilization control method for a high-voltage drive system of a piezoelectric wavefront corrector, used in a voltage stabilization control device for a high-voltage drive system of a piezoelectric wavefront corrector as described above, comprises:

[0020] The host computer control device is communicatively connected to the DA converter, the DA converter is communicatively connected to the high-voltage amplifier, the power supply is communicatively connected to the high-voltage amplifier, and the voltage control module is communicatively connected to the power supply; the power supply provides stable DC positive and negative high-voltage power and low-voltage power for the high-voltage amplifier; the DA converter receives the DM control command sent by the host computer control device, and provides an analog signal to the high-voltage amplifier after DA conversion, the high-voltage amplifier converts the analog signal into an analog high-voltage signal, and provides current energy to drive the piezoelectric wavefront corrector to work; the voltage control module controls the high voltage with the low voltage when the power supply is turned on and off, so that the power supply voltage of the power supply is stable.

[0021] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: the present invention combines the characteristics of time relays and energy storage capacitors to solve the defects of the high-voltage drive system itself, eliminates the high-voltage mutation caused by turning on and off the power supply, and makes the power supply drive of the adaptive high-voltage drive system stable, effectively improves the stability of the high-voltage drive system of the piezoelectric wavefront corrector, meets the high output quality requirements of the high-voltage drive in the adaptive optical system, improves the correction effect of the piezoelectric wavefront corrector on the high-order phase difference of the distorted wavefront, and increases the energy transfer efficiency. In addition, the structure of the device is simple and easy to obtain, the technology is mature, and the fault tolerance rate of the high-voltage drive system is improved, the stability of the high-voltage drive system is improved, and the correction effect of the piezoelectric wavefront corrector on the high-order phase difference of the distorted wavefront is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a voltage stabilizing control device of a high-voltage driving system of a piezoelectric wavefront corrector in one embodiment;

[0023] Figure 2 A schematic diagram of the voltage control module system in one embodiment;

[0024] Figure 3 A schematic diagram of the connection structure of a high-voltage control module in an embodiment;

[0025] Figure 4 A schematic diagram of a wiring method of a time delay relay in one embodiment;

[0026] Figure 5 Schematic diagram of the connection structure of the low-pressure control module in one embodiment. DETAILED DESCRIPTION

[0027] Before describing the specific embodiments of the present invention, the overall concept of the present invention is described as follows:

[0028] The present invention is mainly developed from the use process of the piezoelectric wavefront corrector. At present, there is no simple and mature voltage stabilization method in the adaptive high-voltage drive system. The double switch control is easy to be accidentally touched during actual operation, and the high voltage is accidentally turned on first to generate a sudden voltage, thereby damaging the wavefront corrector. In addition, the startup and shutdown process is complicated and cumbersome, which is inconvenient.

[0029] Therefore, the present invention proposes a new control method, which utilizes the characteristics of time delay relays and capacitors to enable low voltage to control high voltage when the high voltage power supply is turned on and off in one power switch, which can effectively solve the problem of the above-mentioned dual switch being difficult to use.

[0030] It effectively improves the stability of the high-voltage drive system of the piezoelectric wavefront corrector, meets the high output quality requirements of the high-voltage drive in the adaptive optical system, improves the high-order phase difference correction effect of the piezoelectric wavefront corrector in correcting the distorted wavefront, and increases the energy transfer efficiency.

[0031] After introducing the overall concept of the present invention, in order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0032] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] For ease of understanding, the terms involved in the embodiments of the present invention are explained below:

[0034] Wavefront corrector: An active optical device that, under external control, can achieve high-speed and high-precision changes in the shape, translation or rotation of an optical mirror, thereby changing the wavefront phase of the optical system.

[0035] DA Converter: (Digital-to-Analog Converter) is an electronic device that converts digital signals into analog signals. Digital signals are composed of discrete values, while analog signals are continuously changing signals.

[0036] In one embodiment, Figure 1 As shown, a voltage stabilization control device of a high-voltage driving system of a piezoelectric wavefront corrector is provided, comprising: a host computer control device 10, a DA converter 11, a high-voltage amplifier 12, a power supply 13 and a voltage control module 14.

[0037] The host computer control device 10 is communicatively connected to the DA converter 11, the DA converter 11 is communicatively connected to the high-voltage amplifier 12, the power supply 13 is communicatively connected to the high-voltage amplifier 12, and the voltage control module 14 is communicatively connected to the power supply 13; the power supply 13 provides a stable DC positive and negative high-voltage power supply and a low-voltage power supply for the high-voltage amplifier 12; the DA converter 11 receives the DM control command sent by the host computer control device 10, and provides an analog signal to the high-voltage amplifier 12 after DA conversion, the high-voltage amplifier 12 converts the analog signal into an analog high-voltage signal, and provides current energy to drive the piezoelectric wavefront corrector to work; the voltage control module 14 controls the high voltage at a low voltage when the power supply is turned on and off, so that the supply voltage of the power supply 13 is stable.

[0038] The voltage control module 14 includes: a high voltage control module and a low voltage control module; the high voltage control module and the low voltage control module are in communication connection. Figure 2 As shown, it is a system schematic diagram of the voltage control module 14.

[0039] like Figure 3 As shown, the high-voltage control module includes: a first power input module, a time delay relay, a power filter, a rectifier bridge, a capacitor energy storage module, a high-voltage power supply, a magnetic ring filter device, and a first power output module. The rectifier bridge converts 220V AC power into 310V DC power. The high-voltage power supply inputs 310V DC power and outputs ±525V DC power.

[0040] The time delay relay can be set to delay the power-on time, which is set to 5s in this device. The wiring method of the time delay relay is as follows Figure 4 As shown, the load end is connected to the input end of the power filter, and the relay input end is connected to the 220vAC (alternating current) input.

[0041] like Figure 5 As shown, the low voltage control module includes: a second power input module, a low voltage power supply, an energy storage capacitor module and a second power output module. The low voltage power supply inputs 220V AC and outputs ±9V DC.

[0042] When the system is turned on, the low-voltage power supply is turned on and the energy storage capacitor module is charged; the first power supply inputs the 220vAC power supply into the time delay relay to delay power on; after filtering by the power filter, the AC power is converted into DC power through the rectifier bridge, and the DC power is rushed into the capacitor energy storage module, and the capacitor energy storage module outputs a voltage signal; the voltage signal is input into the high-voltage power supply, and filtered by the magnetic ring filter device to obtain the filtered voltage, which is output through the first power supply output module. The low voltage has been turned on before the high voltage is powered on, realizing the low voltage controlling high voltage function.

[0043] When the system is shut down, the high-voltage power supply is turned off. After the system is powered off, the low-voltage power supply continues to supply power to the DA converter through the energy storage capacitor module until the power is exhausted. Before the high-voltage power supply is powered off, the low-voltage power supply is still working, realizing the low-voltage control high-voltage function and making the power supply voltage stable.

[0044] The voltage stabilization control device of the high-voltage drive system of the piezoelectric wavefront corrector provided by the present invention adds a high-voltage drive system voltage stabilization control structure to the equipment used in the adaptive optical system, which not only meets the requirements for system voltage stabilization in the adaptive optical system, but also improves the output power of the signal and increases the energy transfer efficiency.

[0045] Adding a time delay relay and energy storage capacitor to the power supply circuit, when the power is turned on, the low voltage is turned on and the high voltage is turned on with a delay; when the main switch is turned off, the high voltage is turned off and the low voltage is turned off with a delay. This suppresses the sudden voltage change and achieves the purpose of low voltage controlling high voltage. This makes the power supply voltage of the power supply system stable. This improves the stability of the high-voltage drive system and the correction effect of the piezoelectric wavefront corrector on the high-order phase difference of the distorted wavefront.

[0046] It should be noted that the method of the embodiment of the present invention can be performed by a single device, such as a computer or a server. The method of this embodiment can also be applied in a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present invention, and the multiple devices will interact with each other to complete the described method.

[0047] It should be noted that some embodiments of the present invention are described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0048] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, the present invention further provides a voltage stabilization control method for a high-voltage driving system of a piezoelectric wavefront corrector, comprising:

[0049] The host computer control device is communicatively connected to the DA converter, the DA converter is communicatively connected to the high-voltage amplifier, the power supply is communicatively connected to the high-voltage amplifier, and the voltage control module is communicatively connected to the power supply; the power supply provides stable DC positive and negative high-voltage power and low-voltage power for the high-voltage amplifier; the DA converter receives the DM control command sent by the host computer control device, and provides an analog signal to the high-voltage amplifier after DA conversion, the high-voltage amplifier converts the analog signal into an analog high-voltage signal, and provides current energy to drive the piezoelectric wavefront corrector to work; the voltage control module controls the high voltage with the low voltage when the power supply is turned on and off, so that the power supply voltage of the power supply is stable.

[0050] The method of the above embodiment is used to implement the voltage stabilization control device of the high-voltage driving system of the corresponding piezoelectric wavefront corrector in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0052] Where specific details have been set forth to describe exemplary embodiments of the present invention, it will be apparent to those skilled in the art that embodiments of the present invention may be implemented without these specific details or with variations thereto. Therefore, these descriptions should be considered illustrative rather than restrictive. Although the present invention has been described in conjunction with specific embodiments of the present invention, many replacements, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art based on the foregoing description.

[0053] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the present invention.

Claims

1. A voltage stabilizing control device for a high voltage driving system of a piezoelectric wavefront corrector, characterized in that: include: Host computer control device, DA converter, high voltage amplifier, power supply and voltage control module; The host computer control device is communicatively connected to the DA converter, the DA converter is communicatively connected to the high-voltage amplifier, the power supply is communicatively connected to the high-voltage amplifier, and the voltage control module is communicatively connected to the power supply; the power supply provides stable DC positive and negative high-voltage power and low-voltage power for the high-voltage amplifier; the DA converter receives the DM control command sent by the host computer control device, and provides an analog signal to the high-voltage amplifier after DA conversion, the high-voltage amplifier converts the analog signal into an analog high-voltage signal, and provides current energy to drive the piezoelectric wavefront corrector to work; the voltage control module controls the high voltage at a low voltage when the power supply is turned on and off, so that the power supply voltage of the power supply is stable.

2. The voltage stabilizing control device of the high voltage driving system of the piezoelectric wavefront corrector according to claim 1, characterized in that: The voltage control module includes: a high voltage control module and a low voltage control module; wherein the high voltage control module and the low voltage control module are in communication connection; The high-voltage control module includes: a first power input module, a time delay relay, a power filter, a rectifier bridge, a capacitor energy storage module, a high-voltage power supply, a magnetic ring filter device, and a first power output module; The low voltage control module includes: a second power input module, a low voltage power supply, an energy storage capacitor module and a second power output module.

3. The voltage stabilizing control device of the high voltage driving system of the piezoelectric wavefront corrector according to claim 2, characterized in that: The voltage control module controls the high voltage by the low voltage when the power supply is turned on and off, so that the power supply voltage of the power supply is stable, including: When the system is turned on, the low-voltage power supply is turned on, and the energy storage capacitor module is charged; the first power supply inputs the 220vAC power supply into the time delay relay to delay power on; after being filtered by the power filter, the AC power is converted into DC power through the rectifier bridge, and the DC power is rushed into the capacitor energy storage module, and the capacitor energy storage module outputs a voltage signal; the voltage signal is input into the high-voltage power supply, and the filtered voltage is obtained after being filtered by the magnetic ring filter device, and the filtered voltage is output through the first power supply output module. The low voltage has been turned on before the high voltage is powered on, realizing the low voltage control high voltage function; When the system is shut down, the high-voltage power supply is turned off, and the low-voltage power supply continues to supply power to the DA converter through the energy storage capacitor module after the system is powered off until the power is exhausted. Before the high-voltage power supply is powered off, the low-voltage power supply is still working, realizing the low-voltage control high-voltage function, so that the power supply voltage of the power supply is stable.

4. The voltage stabilizing control device of the high voltage driving system of the piezoelectric wavefront corrector according to claim 3, characterized in that: The converting AC power into DC power by the rectifier bridge comprises: The rectifier bridge converts 220V AC power into 310V DC power.

5. The voltage stabilizing control device of the high voltage driving system of the piezoelectric wavefront corrector according to claim 3, characterized in that: The voltage signal is input into the high voltage power supply, and the filtered voltage obtained after being filtered by the magnetic ring filter device includes: The high voltage power supply inputs 310V DC and outputs ±525V DC.

6. The voltage stabilizing control device of the high voltage driving system of the piezoelectric wavefront corrector according to claim 3, characterized in that: Also includes: The low voltage power supply inputs 220V AC power and outputs ±9V DC power.

7. A voltage stabilization control method for a high voltage driving system of a piezoelectric wavefront corrector, characterized in that: A voltage stabilizing control device for a high voltage driving system of a piezoelectric wavefront corrector as claimed in any one of claims 1 to 6, comprising: The host computer control device is communicatively connected to the DA converter, the DA converter is communicatively connected to the high-voltage amplifier, the power supply is communicatively connected to the high-voltage amplifier, and the voltage control module is communicatively connected to the power supply; the power supply provides stable DC positive and negative high-voltage power and low-voltage power for the high-voltage amplifier; the DA converter receives the DM control command sent by the host computer control device, and provides an analog signal to the high-voltage amplifier after DA conversion, the high-voltage amplifier converts the analog signal into an analog high-voltage signal, and provides current energy to drive the piezoelectric wavefront corrector to work; the voltage control module controls the high voltage with the low voltage when the power supply is turned on and off, so that the power supply voltage of the power supply is stable.

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