CN205864315U - A kind of motor noise-reducing control circuit applied on intelligence clothes airing machine - Google Patents
A kind of motor noise-reducing control circuit applied on intelligence clothes airing machine Download PDFInfo
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- CN205864315U CN205864315U CN201620794177.8U CN201620794177U CN205864315U CN 205864315 U CN205864315 U CN 205864315U CN 201620794177 U CN201620794177 U CN 201620794177U CN 205864315 U CN205864315 U CN 205864315U
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Abstract
A kind of motor noise-reducing control circuit applied on intelligence clothes airing machine, including MCU controller, phase voltage phase detecting module, current phase detection module, first, second drive circuit and first, second controllable silicon；First, second controllable silicon is connected to motor AC power supply and motor and rotates forward, between the voltage input end of reversion；The phase voltage phase detection signal of MCU controller input phase voltage phase detecting module output and the current phase of current phase detection module output detect signal and process, output first controls signal to the first drive circuit, control the first silicon controlled angle of flow, thus control the input voltage that motor rotates forward, or output second controls signal to the second drive circuit, control the second silicon controlled angle of flow, thus control the input voltage of motor reversal.Even if this utility model motor light running, motor torque and the speed of service also will not increase, and noise is little.
Description
Technical field
This utility model relates to a kind of motor noise-reducing control circuit applied on intelligence clothes airing machine.
Background technology
Along with the development of intelligence clothes airing machine industry, exchange tube shaped electric machine is widely used in realizing the lifting merit of intelligence clothes airing machine
Can, the control mode that exchange tube shaped electric machine is traditional at present all uses Control, uses the controlling party directly initiating relay
Formula drives exchange tube shaped electric machine work, and no matter the load of motor is light load or heavy duty, and relay is all full voltage work,
At rated loads, exchange tubulose motor stabilizing runs, and noise is the least, and under light load, exchange tube shaped electric machine is under full voltage
Torque increases, and linear velocity increases, and the motor speed of service increases, and promotes motor noise to increase.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art exactly, it is provided that a kind of electricity applied on intelligence clothes airing machine
Machine noise reduction control circuit, during motor light running, torque will not increase, and the speed of service will not increase, and motor noise is little.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of motor noise-reducing control circuit applied on intelligence clothes airing machine, including MCU controller, phase voltage phase-detection
Module, current phase detection module, the first drive circuit, the first controllable silicon, the second drive circuit and the second controllable silicon；
Phase voltage phase detecting module, detects the zero potential point phase place of motor AC power supply and exports；
Current phase detection module, detects the zero-current point phase place of motor load electric current and exports；
First controllable silicon, is connected between the voltage input end of motor AC power supply and motor rotating forward；
First drive circuit, output drive signal is to the first silicon controlled trigger electrode；
Second controllable silicon, is connected between motor AC power supply and the voltage input end of motor reversal；
Second drive circuit, output drive signal is to the second silicon controlled trigger electrode；
MCU controller, the phase voltage phase detection signal of input phase voltage phase detecting module output and current phase inspection
Surveying the current phase detection signal processing of module output, output first controls signal to the first drive circuit, controls the
The one silicon controlled angle of flow, thus control the input voltage that motor rotates forward, or output second controls signal to the second drive circuit,
Control the second silicon controlled angle of flow, thus control the input voltage of motor reversal.
In one embodiment, described first drive circuit and the second drive circuit, arbitrary drive circuit includes three poles
Pipe Q1, photoelectrical coupler IC1 and current-limiting resistance R2, R3, R4, described current-limiting resistance R4 is connected to MCU controller and audion Q1
Base stage between, described current-limiting resistance R3 is connected between the colelctor electrode of audion Q1 and the input of photoelectrical coupler IC1, institute
Stating current-limiting resistance R2 and be serially connected in the outfan of photoelectrical coupler IC1, this photoelectrical coupler IC1 output drive signal is to silicon controlled
Trigger electrode, triggers controlled silicon conducting.Described first controllable silicon and the second controllable silicon, arbitrary controllable silicon two ends connect RC and absorb electricity
Road, this RC absorbing circuit comprises the resistance R1 and electric capacity C1 being connected in series.
This utility model uses controllable silicon semiconductor switch components and parts, gathers phase voltage phase-detection by MCU controller
Signal and current phase detection signal, MCU controller, according to the voltage and current phase detection signal collected, detects motor
Actual band carries situation, then, carries situation according to the actual band of motor, sends control signal, control the size of thyristor operating angle,
Thus control the size of motor input voltage, with control motor by rated power factor run so that the torque of motor and turn
Speed is stable, it is ensured that motor low noise runs.
The motor AC power supply zero potential point phase place that phase voltage phase detecting module detects detects with current phase
The difference of the motor load current zero current point phase place that module detects is detection limit φ c, and this detection limit φ c is exactly the merit of motor
Rate factor angle, the power factor of motor is power factor cosine of an angle, so, detect power-factor angle, be equivalent to detect merit
Rate factor, and the band that the size of the power factor size of motor or detection limit φ c reflects motor carries situation, motor is that perception is negative
Carry, the difference of the voltage-phase of motor AC power supply and the current phase of motor load than nominal load time phase contrast big,
Showing that motor is in light condition, at this moment, motor torque is constant, and load lightens, and rotating speed accelerates, and power factor is low, and noise is high, therefore
Need to reduce the input voltage of motor, to reduce motor torque, improve power factor, reduce noise.
The phase place that this utility model utilizes MCU controller automatically to detect motor AC power supply and motor load electric current is closed
System, carries situation by its actual band of phase difference detection motor, and is automatically adjusted the silicon controlled angle of flow accordingly, thus be automatically adjusted
The input voltage of motor, makes the stabilization of speed of motor, it is ensured that the power of motor that motor power factor levels off under nominal load because of
Number, makes motor operate in optimum state, reduces the noise produced due to load change, saves the energy simultaneously.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of embodiment；
Fig. 2 is the control flow chart of embodiment；
Load current and the phase diagram of supply voltage when Fig. 3 is the motor underloading of embodiment；
Load current and the phase diagram of supply voltage when Fig. 4 is the Rated motor load of embodiment；
Fig. 5 is the controlled interval graph of controllable silicon SCR of embodiment；
Fig. 6 is the controllable silicon SCR circuit theory diagrams of embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model embodiment is described in detail.
As it is shown in figure 1, embodiment include MCU controller, phase voltage phase detecting module, current phase detection module,
One drive circuit, the first controllable silicon SCR the 1, second drive circuit and the second controllable silicon SCR 2；Phase voltage phase detecting module detects
The zero potential point phase place of motor AC power supply also exports；The zero current of current phase detection module detection motor load electric current
Point phase place also exports；First controllable silicon SCR 1 is connected to motor AC power supply ACL and the voltage input end of motor rotating forward
Between ACK1；The trigger electrode of the first drive circuit output drive signal to the first controllable silicon SCR 1, triggers the first controllable silicon SCR 1
Conducting；Second controllable silicon SCR 2 is connected between motor AC power supply ACL and the voltage input end ACK2 of motor reversal；The
The trigger electrode of two drive circuit output drive signals to the second controllable silicon SCR 2, triggers the second controllable silicon SCR 2 and turns on；MCU controls
The phase voltage phase detection signal of device input phase voltage phase detecting module output and the electric current of current phase detection module output
Phase detection signal also processes, and exports the first control signal H1 to the first drive circuit, controls the first controllable silicon SCR 1
The angle of flow, thus control the input voltage that motor rotates forward, or output the second control signal H2 to the second drive circuit, control second
The angle of flow of controllable silicon SCR 2, thus control the input voltage of motor reversal.
As shown in Figure 6, the first drive circuit of embodiment and the second drive circuit, arbitrary drive circuit includes audion
Q1, photoelectrical coupler IC1 and current-limiting resistance R2, R3, R4, current-limiting resistance R4 is connected to MCU controller and the base stage of audion Q1
Between, current-limiting resistance R3 is connected between the colelctor electrode of audion Q1 and the input of photoelectrical coupler IC1, and current-limiting resistance R2 goes here and there
It is connected on the outfan of photoelectrical coupler IC1, the trigger electrode of this photoelectrical coupler IC1 output drive signal to controllable silicon SCR, triggers
Controllable silicon SCR turns on.First controllable silicon SCR 1 and the second controllable silicon SCR 2 of embodiment, arbitrary controllable silicon SCR two ends connect RC
Absorbing circuit, this RC absorbing circuit comprises the resistance R1 and electric capacity C1 being connected in series, is used for protecting controllable silicon SCR reliability service.
Controllable silicon SCR is switching device, MCU controller output control signal H, triggers controllable silicon SCR conducting through drive circuit.Such as Fig. 6
Shown in, when control signal H is high level, audion Q1 turns on, and photoelectrical coupler IC1 turns on, and drives controllable silicon SCR conducting,
Motor obtains electric operation；When control signal H is low level, audion Q1 ends, and photoelectrical coupler IC1 ends, and controllable silicon SCR exists
Cut-off near zero potential point, motor power-off is out of service.Adjust the time point of MCU controller output high-level control signal H, i.e.
Adjustable triggers the time point of controllable silicon SCR conducting, and adjusts the size of the controllable silicon SCR angle of flow, just can adjust electric moter voltage
The input voltage size of input ACK.
As in figure 2 it is shown, be the control flow chart of embodiment, when specified rate φ 0 is motor belt motor nominal load, motor AC supplies
Electricity power supply zero potential point phase place and the difference of motor load current zero current point phase place, actual test obtains；Detection limit φ c is phase
The motor AC power supply zero potential point phase place that voltage-phase detection module detects detects with current phase detection module
The difference of motor load current zero current point phase place, preferable optimal noise is that detection limit φ c is equal to specified rate φ 0.MCU controls
Device sends the control signal at controllable silicon initial turn-on angle, and through drive circuit to controllable silicon SCR, controllable silicon SCR is according to MCU controller
Control signal open the corresponding angle of flow and power to motor, phase voltage phase detecting module and current phase detection module conduct
Detection device, the zero potential point phase place of detection power supply and the zero-current point phase place of load current, feed back to MCU controller, MCU is controlled
Device processed is through comparison process, if φ is c > φ 0, illustrate that power-factor angle is too big, motor institute bringing onto load is too small, motor torque mistake
Greatly, rotating speed is too high, it is desirable to reduce the input voltage of motor, then gradually reduce thyristor operating angle, until the deviation of φ c Yu φ 0
In allowed band, if the deviation of φ c Yu φ 0 is in allowed band, it is maintained for the angle of flow that controllable silicon is current, keeps motor
Current input voltage, if φ is c, < φ 0, then explanation motor input voltage is too low, and motor torque is too small, and rotating speed is too low, needs
Increase motor input voltage, then be stepped up the silicon controlled angle of flow, until the deviation of φ c Yu φ 0 in allowed band or
Person is adjusted to the angle of flow of maximum.As shown in Figure 3 and Figure 4, represent that load is for load current and electricity during underloading and during nominal load
The phase diagram of source voltage, owing to alternating current generator is inductive load, so current lagging voltage, when during underloading, φ c is than nominal load
φ 0 is big, and φ c is the biggest, and power factor is the lowest, and motor institute bringing onto load is the lightest.As it is shown in figure 5, U1-t is source voltage curve figure,
A1, A2, A3 are zero potential point, and B1, B2, B3, C1, C2, C3 are approximation zero potential point, and U2-t is that the voltage after all wave rectification is bent
Line chart, U3-t is the curve chart of the phase voltage phase detection signal of phase voltage phase detecting module output, can from U3-t
Arriving, communication power supply U1 is interval at C1 to B1, and MCU controller detects high level, in C1 point position, detect low level to
High level saltus step, in B1 point position, detect high level to low transition, the time span of C1 to B1 be exactly high level time
Between length a, can test and obtain, the zero potential point phase place of communication power supply is exactly a/2 location point, and the saltus step of level is the most permissible
Detected by MCU controller.Current phase is detected by current phase detection module, in I-t curve chart, and D1, D2, D3 table
Show that the zero-current point of load current, communication power supply zero potential point are tc with time difference A11-D1 of load current zero-current point
MS, the frequency of mains supply is 50HZ, cycle T=20MS, and corresponding angle is 360 °, then φ c=tc/20*360 °.According to
The control characteristic of bidirectional triode thyristor no-voltage cut-off, controllable silicon is controlled in B1-C2, B2-C3 section, to the trigger electrode of bidirectional triode thyristor
Sending one and trigger pulse b, trigger bidirectional triode thyristor conducting, for ease of contrast sequential, this triggering pulse b is marked in U3-t, can
Control silicon, in A11-A12 mains half-cycle, turns in E-A12 section, and A11-E section is ended, and is also similar control at other voltage half cycle
System.Regulation triggers the time point E of controlled silicon conducting, it is simply that the size of regulation thyristor operating angle, thus regulates the input of motor
Voltage.
If silicon controlled initial turn-on angle is set as 80% conducting of civil power half period, then MCU controller sends
The control signal at controllable silicon initial turn-on angle, can be after time point communication power supply zero potential point being detected, time delay
2MS, sends control signal, triggers controlled silicon conducting through drive circuit, and the civil power half period is 10MS, then silicon controlled ON time
It is 8MS.Progressively reduce or be stepped up the silicon controlled angle of flow, as a example by being stepped up the silicon controlled angle of flow, such as setting value
For the 1% of the civil power half period, i.e. 0.1MS, then regulate by this setting value, the silicon controlled angle of flow is stepped up, it is simply that: controllable silicon
ON time press 8.1MS, 8.2MS, 8.3MS ... be stepped up, until the motor that phase voltage phase detecting module detects
The motor load current zero current point phase place that communication power supply zero potential point phase place and current phase detection module detect
Difference φ c, level off to motor belt motor nominal load time motor AC power supply zero potential point phase place and motor load current zero electricity
Difference φ 0 of flow point phase place, or increase to adjustable maximum conduction angle.For making governing speed faster, it is also possible to be: just open
Begin by bigger setting value, as regulated by the speed of the 5% of civil power half period, i.e. 0.5MS, close to again by less setting value
Regulation, as regulated by the speed of the 1% of civil power half period, i.e. 0.1MS, until the motor that phase voltage phase detecting module detects
The motor load current zero current point phase place that communication power supply zero potential point phase place and current phase detection module detect
Difference ф c level off to motor belt motor nominal load time motor AC power supply zero potential point phase place and motor load current zero electric current
Difference φ 0 of some phase place, or increase to adjustable maximum conduction angle.The zero potential point phase place of motor AC power supply is used
The zero potential point time value of motor AC power supply represents, the zero-current point phase place motor load current of motor load electric current
Zero-current point time value represent, equally, specified rate φ 0 be with during motor belt motor nominal load motor AC power supply zero electricity
Gesture point time value represents with the difference of the zero-current point time value of load current, and the detection limit φ c that MCU controller obtains is with phase
The zero potential point time value of the motor AC power supply that voltage-phase detection module detects is examined with current phase detection module
The difference of the zero-current point time value of the load current measured represents.
Motor runs under rated voltage, nominal load, and noise is minimum.
This utility model is owing to being provided with MCU controller, and is provided with detection device, i.e. phase voltage phase detecting module and
Current phase detection module, therefore MCU controller can detect phase place and the motor load electric current of motor AC power supply automatically
Phase place, carry situation by its actual band of phase difference detection motor, and carry situation according to the actual band of motor, send and control letter
Number, control the size of thyristor operating angle, thus control the size of motor input voltage, make the stabilization of speed of motor, it is ensured that electricity
Acc power factor levels off to the motor power factor under nominal load, makes motor operate in optimum state, reduces owing to load becomes
The noise changed and produce, saves the energy simultaneously.
Claims (3)
1. the motor noise-reducing control circuit applied on intelligence clothes airing machine, it is characterised in that: include MCU controller, mutually electricity
Press phase detecting module, current phase detection module, the first drive circuit, the first controllable silicon, the second drive circuit and second can
Control silicon；
Phase voltage phase detecting module, detects the zero potential point phase place of motor AC power supply and exports；
Current phase detection module, detects the zero-current point phase place of motor load electric current and exports；
First controllable silicon, is connected between the voltage input end of motor AC power supply and motor rotating forward；
First drive circuit；Output drive signal is to the first silicon controlled trigger electrode；
Second controllable silicon, is connected between motor AC power supply and the voltage input end of motor reversal；
Second drive circuit；Output drive signal is to the second silicon controlled trigger electrode；
MCU controller, the phase voltage phase detection signal of input phase voltage phase detecting module output and current phase detection mould
The current phase of block output detects signal and processes, and output first controls signal to the first drive circuit, and controlling first can
The angle of flow of control silicon, thus control the input voltage that motor rotates forward, or output second controls signal to the second drive circuit, controls
The second silicon controlled angle of flow, thus control the input voltage of motor reversal.
Control circuit the most according to claim 1, it is characterised in that: described first drive circuit and the second drive circuit,
Arbitrary drive circuit includes that audion Q1, photoelectrical coupler IC1 and current-limiting resistance R2, R3, R4, described current-limiting resistance R4 are connected to
Between the base stage of MCU controller and audion Q1, described current-limiting resistance R3 is connected to colelctor electrode and the photoelectric coupling of audion Q1
Between the input of device IC1, described current-limiting resistance R2 is serially connected in the outfan of photoelectrical coupler IC1, and IC1 is defeated for this photoelectrical coupler
Go out to drive signal to silicon controlled trigger electrode, trigger controlled silicon conducting.
Control circuit the most according to claim 1, it is characterised in that: described first controllable silicon and the second controllable silicon, arbitrary
Controllable silicon two ends connect RC absorbing circuit, and this RC absorbing circuit comprises the resistance R1 and electric capacity C1 being connected in series.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208886A (en) * | 2016-07-26 | 2016-12-07 | 广东好太太科技集团股份有限公司 | A kind of motor noise-reducing control circuit applied on intelligence clothes airing machine and method thereof |
| CN107332482A (en) * | 2017-08-31 | 2017-11-07 | 广东好太太科技集团股份有限公司 | A kind of Dolby circuit applied on clothes airing machine and method |
| CN108934185A (en) * | 2017-03-24 | 2018-12-04 | 三菱电机株式会社 | The light load determination method of DC-to-AC converter and motor |
| CN114269045A (en) * | 2021-12-06 | 2022-04-01 | 宁海县鹰峤电气有限公司 | LED silicon controlled rectifier dimming power supply |
-
2016
- 2016-07-26 CN CN201620794177.8U patent/CN205864315U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208886A (en) * | 2016-07-26 | 2016-12-07 | 广东好太太科技集团股份有限公司 | A kind of motor noise-reducing control circuit applied on intelligence clothes airing machine and method thereof |
| CN108934185A (en) * | 2017-03-24 | 2018-12-04 | 三菱电机株式会社 | The light load determination method of DC-to-AC converter and motor |
| CN107332482A (en) * | 2017-08-31 | 2017-11-07 | 广东好太太科技集团股份有限公司 | A kind of Dolby circuit applied on clothes airing machine and method |
| CN114269045A (en) * | 2021-12-06 | 2022-04-01 | 宁海县鹰峤电气有限公司 | LED silicon controlled rectifier dimming power supply |
| CN114269045B (en) * | 2021-12-06 | 2024-04-02 | 宁海县鹰峤电气有限公司 | LED silicon controlled rectifier dimming power supply |
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