CN105759892A - Constant power control method for ultrasonic water channel - Google Patents
Constant power control method for ultrasonic water channel Download PDFInfo
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- CN105759892A CN105759892A CN201610089339.2A CN201610089339A CN105759892A CN 105759892 A CN105759892 A CN 105759892A CN 201610089339 A CN201610089339 A CN 201610089339A CN 105759892 A CN105759892 A CN 105759892A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
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- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a constant power control method for an ultrasonic water channel. The ultrasonic water channel comprises a power supply module, an input current detection module, a high-frequency power output module, a high-frequency current and voltage phase detection module, an inductive reactance matching module, an ultrasonic transducer, a water channel body, a duty ratio adjustment module, a frequency adjustment module and a high-frequency square wave oscillation module, wherein the high-frequency power output module, the high-frequency current and voltage phase detection module, the frequency adjustment module and the high-frequency square wave oscillation module form a frequency automatic control system, so that a high-frequency system always works in a resonant state. The input current detection module, the duty ratio adjustment module, the high-frequency square wave oscillation module and the high-frequency power output module form an input current automatic control system, so that the input current of the high-frequency system is at a constant value. Due to the fact that the input voltage and current of the high-frequency power output module are both at constant values and the high-frequency system works in the resonant state, the electric power consumed by the ultrasonic transducer is at a constant value, that is, constant power control is realized.
Description
Technical field
The present invention relates to a kind of ultrasonic sink control method, especially relate to a kind of ultrasonic sink constant-power control method.
Background technology
In existing ultrasonic sink power controls, generally all adopt and regulate manually.Having the circuit being automatically adjusted once in a while, the sampling parameters of its voltage and current all takes from high frequency power outfan.And the magnitude of voltage of high frequency power outfan, can be widely varied along with the change of ultrasonic sink load, this brings very big difficulty for realizing power limitation control, and then affects the cleaning performance of ultrasonic sink.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the present invention provides a kind of ultrasonic sink constant-power control method.
In order to realize object above, the solution of the present invention includes: power supply module, input electric cur-rent measure module, high frequency power output module, high frequency electric voltage-phase detection module, induction reactance matching module, ultrasonic transducer, tank, dutycycle adjusting module, frequency regulation block, high frequency square wave oscillation module.
Described power supply module, is the unidirectional current that the alternating current of 50Hz is transformed into two groups of voltage value constant, one group of supply high frequency power output module, provides electric energy for transducer；Another group supply input electric cur-rent measure module, high frequency square wave oscillation module, dutycycle adjusting module, high frequency electric voltage-phase detection module, frequency regulation block etc., provide electric energy for whole control system.
Described high frequency power output module, is the high-frequency alternating current that the constant-voltage DC source that power supply module provides is transformed into certain frequency and certain voltage, is used for driving ultrasonic transducer.
Described ultrasonic transducer, it is the electric elements having capacitive properties, and it snugly fits into the outside of the bottom of tank or side.The high-frequency ac electric energy that high frequency power output module can be sent here by it, is directly translated into mechanical energy, energy is sent in the water in tank in the way of high-frequency mechanical vibration, is used for cleaning.
Described induction reactance matching module, it is the inducer that an inductance value is fixing, it has collectively constituted high-frequency circuit system with high frequency power output module and ultrasonic transducer, it is used to adjust high-frequency circuit system resonance, makes the current phase in high-frequency circuit system keep Tong Bu in a certain frequency with voltage-phase.
Described high frequency electric voltage-phase detection module, is used in detection high-frequency circuit electric current and voltage-phase, the variable quantity of electric current and voltage-phase is detected, gives frequency regulation block.
Described frequency regulation block, is the variable quantity transmitting current phase and the voltage-phase come according to high frequency electric voltage-phase detection module, suitably adjusts the frequency of oscillation of high frequency square wave oscillation module.
Described high frequency square wave oscillation module, is the high-frequency square-wave signal that can produce certain frequency and certain dutycycle, is used for controlling and driving high frequency power output module.
Described input electric cur-rent measure module, is detected by the current value of power supply module supply high frequency power output module, delivers to dutycycle adjusting module.
Described dutycycle adjusting module, it it is the input current changing value detected according to input electric cur-rent measure module, suitably adjust the duty cycle square wave of high frequency square wave oscillation module and then the output voltage of control high frequency power output module, the final input current controlling high frequency power output module.
Compared to prior art, the ultrasonic sink constant-power control method of the present invention, have employed two closed-loop control systems.The Microcomputer that the first is made up of high frequency power output module, high frequency electric voltage-phase detection module, frequency regulation block, high frequency square wave oscillation module, make the radio frequency system being made up of high frequency power output module, ultrasonic transducer, induction reactance matching module, always working in resonant condition, the power of at this moment ultrasonic transducer output is maximum.Its two input current automatic control system being made up of input electric cur-rent measure module, dutycycle adjusting module, high frequency square wave oscillation module, high frequency power output module, makes the input current of high frequency power output module remain steady state value.Owing to the voltage of power supply module supply high frequency power output module is a steady state value, and the input current of high frequency power output module is controlled as steady state value, and radio frequency system is operated in again resonant condition, so the electrical power that ultrasonic transducer consumes is steady state value, i.e. a ultrasonic sink power limitation control.
Accompanying drawing explanation
Fig. 1 is the theory diagram of ultrasonic sink constant-power control method of the present invention
Specific implementation method
Herein below is in conjunction with concrete preferred implementation further description made for the present invention; it cannot be assumed that specific embodiment of the invention is only limited to these explanations; for those skilled in the art; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
As shown in Figure 1, one embodiment of the invention provides a kind of ultrasonic sink constant-power control method, and it includes power supply module, input electric cur-rent measure module, high frequency power output module, high frequency electric voltage-phase detection module, induction reactance matching module, ultrasonic transducer, tank, frequency regulation block, dutycycle adjusting module, high frequency square wave oscillation module.
Operation principle: power supply module provides required electric energy for other modules, and the voltage being wherein supplied to high frequency power output module is the DC voltage of a steady state value, provides converting electrical energy for ultrasonic transducer simultaneously.Being constituted a current close-loop control system by input electric cur-rent measure module, dutycycle adjusting module, high frequency square wave oscillation module, high frequency power output module, the operating current for automatic control high frequency power output module and the radio frequency system of induction reactance matching module and ultrasonic transducer composition is a steady state value.A Frequency servo system is constituted by high frequency electric voltage-phase detection module, frequency regulation block, high frequency square wave oscillation module, high frequency power output module, operating frequency for automatic control high frequency system, ultrasonic transducer and induction reactance matching module is made to be operated in resonant frequency, it is made to present pure resistor element circuit characteristic, namely power factor is " 1 ", namely COS Φ=1.
Ultrasonic sink is operationally, because the impedance of ultrasonic transducer can change along with the SEA LEVEL VARIATION in tank, according to Ohm's law, the output electric current causing high frequency power output module is changed by this, and the input current of high frequency power output module also changes therewith.This variable quantity is transfused to current detection module and detects, deliver to dutycycle adjusting module and suitably adjust the duty cycle square wave of high frequency square wave oscillation module, draw according to formula Uo=Udc*Do (Uo: output average voltage Udc: input square wave high level Do: input duty cycle square wave): the output average voltage of high frequency power output module can change along with the change in duty cycle of input square wave, thus have adjusted the output voltage of high frequency power output module, and then have adjusted the output electric current (Ohm's law) of high frequency power output module, the input current making high frequency power output module returns to original setting value.
Because ultrasonic transducer is operated in resonant condition, namely power factor is " 1 ".Again because the running voltage of high frequency power output module and electric current are all steady state values, can obtain according to electrical power formula (P=U*I*COS φ): the electrical power of ultrasonic transducer consumption is steady state value.
In sum, the ultrasonic sink constant-power control method of the present invention, make the electrical power that ultrasonic sink consumes in real work, will not change along with the water level difference in tank, the cleaning performance making ultrasonic sink keeps consistent, fullys meet the purpose of ultrasonic sink invariable power work.
Claims (4)
1. a ultrasonic sink constant-power control method, is characterized in that: include power supply module, input electric cur-rent measure module, high frequency power output module, high frequency electric voltage-phase detection module, induction reactance matching module, ultrasonic transducer, tank, dutycycle adjusting module, frequency regulation block, high frequency square wave oscillation module；Above-mentioned each module constitutes two closed-loop control systems, one, by high frequency power output module, high frequency electric voltage-phase detection module, frequency regulation block, high frequency square wave oscillation module component frequency closed loop automatic control system, makes radio frequency system always work in resonant condition；It two is formed input current closed loop automatic control system by input electric cur-rent measure module, dutycycle adjusting module, high frequency square wave oscillation module, high frequency power output module, and the input current making radio frequency system is steady state value.
2. a kind of ultrasonic sink constant-power control method as claimed in claim 1, is characterized in that: the input voltage of high frequency power output module is constant DC voltage.
3. a kind of ultrasonic sink constant-power control method as claimed in claim 1, is characterized in that: control the sampled point of the input current desired parameters of radio frequency system, be arranged on the direct-flow input end of high frequency power output module.
4. a kind of ultrasonic sink constant-power control method as claimed in claim 1, it is characterized in that: by detecting the variable quantity of the input current of high frequency power output module, adjust the duty cycle square wave of high frequency square wave oscillation module, and then the output high voltage of adjustment high frequency power output module, the final input current adjusting high frequency power output module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610089339.2A CN105759892A (en) | 2016-02-04 | 2016-02-04 | Constant power control method for ultrasonic water channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610089339.2A CN105759892A (en) | 2016-02-04 | 2016-02-04 | Constant power control method for ultrasonic water channel |
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| CN105759892A true CN105759892A (en) | 2016-07-13 |
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| CN201610089339.2A Pending CN105759892A (en) | 2016-02-04 | 2016-02-04 | Constant power control method for ultrasonic water channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488906A (en) * | 2019-08-23 | 2019-11-22 | 佛山市格正电源科技有限公司 | A kind of circuit framework and algorithm that output power of power supply is constant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4888565A (en) * | 1987-12-18 | 1989-12-19 | Kerry Ultrasonics Limited | Apparatus for generating ultrasonic signals |
| CN201875357U (en) * | 2010-11-02 | 2011-06-22 | 中国石油天然气股份有限公司 | Ultrasonic online antiscale device based on oilfield multi-purpose station sewage pipeline |
| CN202910002U (en) * | 2012-09-16 | 2013-05-01 | 丹东市华尔康科技有限公司 | Frequency adjusting ultrasonic water tank |
-
2016
- 2016-02-04 CN CN201610089339.2A patent/CN105759892A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4888565A (en) * | 1987-12-18 | 1989-12-19 | Kerry Ultrasonics Limited | Apparatus for generating ultrasonic signals |
| CN201875357U (en) * | 2010-11-02 | 2011-06-22 | 中国石油天然气股份有限公司 | Ultrasonic online antiscale device based on oilfield multi-purpose station sewage pipeline |
| CN202910002U (en) * | 2012-09-16 | 2013-05-01 | 丹东市华尔康科技有限公司 | Frequency adjusting ultrasonic water tank |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488906A (en) * | 2019-08-23 | 2019-11-22 | 佛山市格正电源科技有限公司 | A kind of circuit framework and algorithm that output power of power supply is constant |
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Application publication date: 20160713 |