CN116073711A - High-voltage direct-current motor electric control device and control method thereof - Google Patents
High-voltage direct-current motor electric control device and control method thereof Download PDFInfo
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- CN116073711A CN116073711A CN202111287199.7A CN202111287199A CN116073711A CN 116073711 A CN116073711 A CN 116073711A CN 202111287199 A CN202111287199 A CN 202111287199A CN 116073711 A CN116073711 A CN 116073711A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
- H02P7/2913—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
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Abstract
The invention relates to a high-voltage direct current motor electric control device and a control method thereof, wherein the high-voltage direct current motor electric control device comprises a rectifying circuit unit, a regulating circuit unit and a high-voltage direct current motor, the rectifying circuit unit is used for converting direct current high-voltage, the regulating circuit unit comprises a pulse wave generating module, a feedback judging module, a pulse wave operation module and a driving module, the pulse wave generating module is used for generating a front pulse wave, the feedback judging module generates a feedback judging signal according to the voltage value of the feedback voltage, the pulse wave operation module generates a rear pulse wave according to the front pulse wave and the feedback judging signal and outputs the rear pulse wave to the driving module, and the driving module modulates the direct current high-voltage by the rear pulse wave to generate direct current regulating output voltage and provides the direct current regulating output voltage to the high-voltage direct current motor, so as to achieve the aim of regulating the rotating speed of the high-voltage direct current motor.
Description
Technical Field
The present invention relates to an electric control device, and more particularly to an electric control device for a high-voltage dc motor and a control method thereof.
Background
At present, sewing machines are divided into electronic sewing machines and mechanical sewing machines, and an electric control device of the existing mechanical sewing machine comprises a foot controller, a driving circuit electrically connected with an external power supply and the foot controller, and an alternating current motor electrically connected with the driving circuit, wherein after the foot controller is trampled, the driving circuit can output a driving signal and transmit the driving signal to the alternating current motor, and the alternating current motor operates according to the driving signal.
However, since the electric control device of the existing mechanical sewing machine adopts the ac motor, a relatively complex circuit is required to adjust the rotation speed of the ac motor, and it is apparent that there is still room for improvement in the existing mechanical sewing machine.
Disclosure of Invention
Therefore, the technical problems to be solved by the invention are as follows: an electric control device for a high-voltage direct-current motor is provided, which can overcome the defects.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a high voltage direct current motor electric control device, is applicable to a sewing machine and an alternating current power supply, and this sewing machine includes a syringe needle of following an upper and lower direction actuation, and this high voltage direct current motor electric control device contains:
the rectification circuit unit comprises an alternating current power supply input end electrically connected with an alternating current power supply and a direct current high voltage output end, and is used for converting a direct current high voltage which is in a direct current form and has a voltage value substantially greater than 100 volts and outputting the direct current high voltage from the direct current high voltage output end;
the controller comprises a regulation output end, and is used for generating a control signal and outputting the control signal from the regulation output end;
a regulation circuit unit comprising:
the pulse wave generation module is provided with a regulation input end electrically connected with the regulation output end and a front pulse wave output end, and generates a front pulse wave with an initial duty ratio according to the control signal and outputs the front pulse wave output end;
the feedback judgment module is provided with a feedback judgment input end for receiving feedback voltage and a feedback judgment output end, and generates a corresponding feedback judgment signal according to the voltage value of the feedback voltage and outputs the feedback judgment signal from the feedback judgment output end;
the pulse wave operation module is provided with an operation input end electrically connected with the feedback judgment output end, a pulse wave input end electrically connected with the front pulse wave output end and a rear pulse wave output end, and generates a rear pulse wave with a regulation duty ratio according to the front pulse wave and the feedback judgment signal and outputs the rear pulse wave from the rear pulse wave output end, wherein the regulation duty ratio corresponds to the voltage value of the feedback voltage;
the driving module is provided with a driving power supply end electrically connected with the direct current high voltage output end, a driving input end electrically connected with the rear pulse wave output end, a feedback voltage output end electrically connected with the feedback judgment input end, a driving voltage output positive end and a driving voltage output negative end, the driving module modulates the direct current high voltage by the rear pulse wave so as to generate a direct current regulation output voltage and output the direct current regulation output voltage to the driving voltage output positive end and the driving voltage output negative end, and the voltage value of the direct current regulation output voltage corresponds to the voltage value of the feedback voltage; a kind of electronic device with high-pressure air-conditioning system
The high-voltage direct current motor is electrically connected with the positive end of the driving voltage output and the negative end of the driving voltage output so as to receive the direct current regulation output voltage, the voltage value of the direct current regulation output voltage is substantially larger than 90 volts, and the high-voltage direct current motor adjusts the rotating speed according to the received direct current regulation output voltage and jointly controls the needle to coordinate and move along the up-down direction.
As a preferred solution, the driving module further has a field effect transistor element and a grounded feedback resistor, the field effect transistor element has a gate terminal electrically connected to the driving input terminal, a drain terminal electrically connected to the negative terminal of the driving voltage output, and a source terminal electrically connected to the feedback voltage output and an ungrounded end of the feedback resistor, the driving module switches the field effect transistor element between an on mode and an off mode by receiving a back pulse, when in the on mode, the drain terminal is electrically connected to the source terminal, when in the off mode, the drain terminal is disconnected from the source terminal, the field effect transistor element modulates the dc high voltage to generate a dc regulated output voltage by a regulated duty ratio of the back pulse, and a total of a single time required by the field effect transistor element in the on mode and a single time required by the field effect transistor element in the off mode is defined as a unit time, and the regulated duty ratio is a value corresponding to the regulated output voltage.
As a preferred scheme, the feedback judgment module generates a feedback judgment signal according to the feedback voltage, the feedback judgment signal is one of a first feedback judgment signal, a second feedback judgment signal and a third feedback judgment signal, a first feedback level is defined by the voltage value of the feedback voltage, a second feedback level with a voltage value larger than the first feedback level, and a third feedback level with a voltage value larger than the second feedback level, when the feedback judgment module judges that the feedback voltage is not smaller than the third feedback level, a third feedback judgment signal is generated, when the feedback judgment module judges that the feedback voltage is not smaller than the second feedback level and is smaller than the third feedback level, a second feedback judgment signal is generated, when the feedback judgment module judges that the feedback voltage is not smaller than the first feedback level and is smaller than the second feedback level, a first feedback judgment signal is generated, the pulse wave operation module generates a first feedback judgment signal according to the first feedback judgment signal, the second feedback judgment signal and the third feedback judgment signal, and the first pulse wave duty ratio of the first feedback judgment signal and the second feedback judgment signal correspond to the first duty ratio, and the second duty ratio of the first feedback judgment signal and the second duty ratio of the second feedback judgment signal correspond to the first duty ratio of the first duty ratio.
Preferably, the first feedback level is between 0.2 v and 0.35 v, the second feedback level is between 0.7 v and 1.0 v, the third feedback level is between 1.2 v and 1.5 v, the first duty cycle is between 35% and 40%, the second duty cycle is between 50% and 60%, and the third duty cycle is between 65% and 75%.
Preferably, the voltage value of the direct-current high-voltage generated by the rectifying circuit unit is between 100 volts and 120 volts.
Preferably, the first feedback level is between 1.4 volts and 1.6 volts, the second feedback level is between 1.7 volts and 1.85 volts, the third feedback level is between 1.9 volts and 2.1 volts, the first duty cycle is between 35% and 40%, the second duty cycle is between 50% and 60%, and the third duty cycle is between 65% and 75%.
As a preferred solution, the voltage value of the dc high voltage generated by the rectifying circuit unit is between 220 volts and 240 volts.
The technical scheme to be further solved by the invention is as follows: a control method of a high-voltage direct-current motor control device capable of overcoming the defects is provided.
In order to solve the technical problems, the invention adopts the following technical scheme: the control method of the high-voltage direct-current motor electric control device is suitable for a sewing machine and an alternating-current power supply, the sewing machine comprises a needle head which acts along an up-down direction, and the control method of the high-voltage direct-current motor electric control device comprises the following steps:
(A) The rectification circuit unit is electrically connected with the alternating current power supply to convert a direct current high voltage which is in a direct current form and has a voltage value substantially larger than 100 volts, and comprises an alternating current power supply input end electrically connected with the alternating current power supply and a direct current high voltage output end for outputting the direct current high voltage;
(B) Generating a front pulse wave with an initial duty ratio by a pulse wave generating module in a regulating circuit unit, wherein the pulse wave generating module is provided with a front pulse wave output end for outputting the front pulse wave;
(C) Receiving a feedback voltage by a feedback judgment module in the regulation circuit unit, and generating a corresponding feedback judgment signal according to the voltage value of the feedback voltage, wherein the feedback judgment module is provided with a feedback judgment input end for receiving the feedback voltage and a feedback judgment output end for outputting the feedback judgment signal;
(D) A pulse wave operation module in the regulation circuit unit generates a back pulse wave with a regulation duty ratio according to the front pulse wave and the feedback judgment signal, wherein the regulation duty ratio corresponds to the voltage value of the feedback voltage, and the pulse wave operation module is provided with a pulse wave input end electrically connected with the front pulse wave output end, a back pulse wave output end for outputting the back pulse wave and an operation input end electrically connected with the feedback judgment output end;
(E) A driving module in the regulating circuit unit modulates the direct current high voltage by the back pulse wave to generate a direct current regulating output voltage, wherein the voltage value of the direct current regulating output voltage corresponds to the voltage value of the feedback voltage, and the voltage value of the direct current regulating output voltage is substantially larger than 90 volts, and the driving module is provided with a driving power supply end electrically connected with the direct current high voltage output end, a driving input end electrically connected with the back pulse wave output end, a feedback voltage output end electrically connected with the feedback judgment input end, and a driving voltage output positive end and a driving voltage output negative end for outputting the direct current regulating output voltage;
(F) The high-voltage DC motor is used for receiving the DC regulation output voltage and regulating the rotating speed according to the received DC regulation output voltage, so that the needle head is matched and operated along the up-down direction.
As a preferable mode, between the step (B) and the step (C), the method further comprises the following steps:
(G) The pulse wave operation module generates a secondary pulse wave with an initial duty ratio according to the front pulse wave and outputs the secondary pulse wave from the rear pulse wave output end;
(H) The driving module modulates the DC high voltage by the secondary pulse wave to generate a front DC regulated output voltage, the voltage value of the front DC regulated output voltage is substantially greater than 90 volts, and the feedback voltage is provided to the feedback judgment input end by the feedback voltage output end.
The beneficial effects of the invention are as follows: because the feedback voltage is inversely related to the rotating speed of the high-voltage direct current motor, the feedback judgment module receives the feedback voltage through the feedback judgment module of the regulation circuit unit, and the feedback judgment module can judge the rotating speed of the motor through the feedback voltage and generate a feedback judgment signal, so that the pulse wave operation module generates a rear pulse wave, the driving module regulates the direct current regulation output voltage according to the rear pulse wave and the direct current high-voltage, and the high-voltage direct current motor can regulate the rotating speed according to the direct current regulation output voltage, thereby achieving the aim of conveniently regulating and controlling the rotating speed of the high-voltage direct current motor.
Drawings
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic electrical schematic diagram of an embodiment of an electrical control device for a HVDC motor according to the present invention;
FIG. 2 is a flow chart of a control method of the electric control device of the high-voltage direct-current motor;
in fig. 1 and 2, 1, a rectifying circuit unit, 11, an ac power input, 12, a dc high voltage output, 2, a controller, 21, a regulation output, 3, a regulation circuit unit, 4, a pulse generating module, 41, a regulation input, 42, a front pulse output, 5, a feedback judging module, 51, a feedback judging input, 52, a feedback judging output, 6, a pulse operation module, 61, a pulse input, 62, an operation input, 63, a rear pulse output, 7, a driving module, 71, a driving power supply, 72, a driving input, 73, a feedback voltage output, 74, a driving voltage output positive terminal, 75, a driving voltage output negative terminal, 76, a field effect transistor element, 761, a gate terminal, 762, a drain terminal, 763, a source terminal, 77, a feedback resistor, 8, a high voltage dc motor, 9, and an ac power supply.
Detailed Description
Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, an embodiment of the present invention is suitable for a sewing machine (not shown) including a needle (not shown) that moves in an up-down direction, and an ac power supply 9. In this embodiment, the ac power source 9 is a standard, and the voltage is between 100 v and 120 v.
This embodiment includes a rectifying circuit unit 1, a controller 2, a regulating circuit unit 3, and a high-voltage direct-current motor 8.
The rectifying circuit unit 1 includes an ac power input 11 electrically connected to the ac power source 9 and a dc high voltage output 12, and the rectifying circuit unit 1 is configured to convert dc high voltage having a voltage value substantially greater than 100 v into dc power, and output the dc high voltage from the dc high voltage output 12. In the present embodiment, the rectifying circuit unit 1 includes a bridge rectifying circuit, a filter circuit, and a voltage stabilizing circuit to perform full-wave rectification, thereby generating the dc high-voltage.
The controller 2 includes a control output 21, and the controller 2 is configured to generate a control signal and output the control signal from the control output 21, in this embodiment, the controller 2 is a pedal, and the internal resistance of the controller 2 is changed by adjusting the force of the pedal to control the control signal.
The regulating circuit unit 3 includes a pulse generating module 4, a feedback judging module 5, a pulse calculating module 6 and a driving module 7.
The pulse generating module 4 has a regulating input terminal 41 electrically connected to the regulating output terminal 21 and a front pulse output terminal 42, and the pulse generating module 4 generates a front pulse with an initial duty ratio according to the control signal and outputs the front pulse from the front pulse output terminal 42.
The feedback judgment module 5 has a feedback judgment input terminal 51 for receiving the feedback voltage and a feedback judgment output terminal 52, and the feedback judgment module 5 generates a corresponding feedback judgment signal according to the voltage value of the feedback voltage and outputs the feedback judgment signal from the feedback judgment output terminal 52.
Specifically, the feedback judgment signal is one of a first feedback judgment signal, a second feedback judgment signal and a third feedback judgment signal, a first feedback level, a second feedback level with a voltage value larger than the first feedback level and a third feedback level with a voltage value larger than the second feedback level are defined by the voltage value of the feedback voltage, when the feedback judgment module 5 judges that the feedback voltage is not smaller than the third feedback level, a third feedback judgment signal is generated, when the feedback judgment module 5 judges that the feedback voltage is not smaller than the second feedback level and smaller than the third feedback level, a second feedback judgment signal is generated, and when the feedback judgment module 5 judges that the feedback voltage is not smaller than the first feedback level and smaller than the second feedback level, a first feedback judgment signal is generated. In this embodiment, the feedback determination module 5 is a comparator for determining the voltage value of the feedback voltage.
The pulse wave operation module 6 has an operation input end 62 electrically connected to the feedback judgment output end 52, a pulse wave input end 61 electrically connected to the front pulse wave output end 42, and a rear pulse wave output end 63, and the pulse wave operation module 6 generates a rear pulse wave with a regulating duty ratio according to the front pulse wave and the feedback judgment signal and outputs the rear pulse wave to the rear pulse wave output end 63, wherein the regulating duty ratio corresponds to the voltage value of the feedback voltage. In this embodiment, the pulse operation module 6 is a Pulse Width Modulation (PWM) circuit.
Specifically, the pulse wave operation module 6 correspondingly generates the back pulse wave with the regulated duty ratio according to the front pulse wave and one of the first feedback determination signal, the second feedback determination signal and the third feedback determination signal, wherein the regulated duty ratio is one of a first duty ratio corresponding to the first feedback determination signal, a second duty ratio corresponding to the second feedback determination signal and a third duty ratio corresponding to the third feedback determination signal, and the third duty ratio is greater than the second duty ratio and the second duty ratio is greater than the first duty ratio.
In the present embodiment, the dc high voltage generated by the rectifying circuit unit 1 has a voltage value between 100 v and 120 v, a first feedback level between 0.2 v and 0.35 v, a second feedback level between 0.7 v and 1.0 v, a third feedback level between 1.2 v and 1.5 v, a first duty cycle between 35% and 40%, a second duty cycle between 50% and 60%, and a third duty cycle between 65% and 75%.
The driving module 7 has a driving power supply end 71 electrically connected to the dc high voltage output end 12, a driving input end 72 electrically connected to the back pulse output end 63, a feedback voltage output end 73 electrically connected to the feedback judgment input end 51, a driving voltage output positive end 74, a driving voltage output negative end 75, a field effect transistor element 76 and a grounded feedback resistor 77, wherein the field effect transistor element 76 has a gate end 761 electrically connected to the driving input end 72, a drain end 762 electrically connected to the driving voltage output negative end 75, and a source end 763 electrically connected to the feedback voltage output end 73 and an end of the feedback resistor 77 which is not grounded.
The driving module 7 modulates the dc high voltage according to the back pulse to generate a dc regulated output voltage, which is output from the driving voltage output positive terminal 74 and the driving voltage output negative terminal 75, and the voltage value of the dc regulated output voltage corresponds to the voltage value of the feedback voltage. In this embodiment, the driving module 7 switches the fet device 76 between the on mode and the off mode by receiving the back pulse, and when the fet device 76 is in the on mode, the drain terminal 762 is electrically connected to the source terminal 763, which means that the drain terminal 762 is substantially in an equipotential (close) state with the source terminal 763, and when the fet device 76 is in the off mode, the drain terminal 762 is disconnected from the source terminal 763, and the fet device 76 modulates the dc high voltage according to the duty cycle of the back pulse to generate the dc regulated output voltage, and defines the total of the time required for a single time that the fet device 76 is in the on mode and the time required for a single time that the fet device 76 is in the off mode as a unit time, and the voltage value of the dc regulated output voltage corresponds to the duty cycle in a unit time, so that the dc regulated output voltage can be regulated or regulated by controlling the voltage rising or falling of the duty cycle.
The high-voltage dc motor 8 is electrically connected to the driving voltage output positive terminal 74 and the driving voltage output negative terminal 75 to receive the dc regulated output voltage, the voltage value of the dc regulated output voltage is substantially greater than 90 v, and the high-voltage dc motor 8 adjusts the rotation speed according to the received dc regulated output voltage, so that the needle head is coordinated in the up-down direction.
In addition, in the variation of the present embodiment, the corresponding ac power supply 9 is in the euro type, and the voltage value of the dc high voltage generated by the rectifying circuit unit 1 is adjusted correspondingly to be between 220 v and 240 v.
Therefore, in the variation of the present embodiment, the first feedback level, the second feedback level, the third feedback level, the first duty cycle, the second duty cycle, and the third duty cycle defined by the pulse wave operation module 6 are correspondingly changed, the first feedback level is between 1.4 v and 1.6 v, the second feedback level is between 1.7 v and 1.85 v, the third feedback level is between 1.9 v and 2.1 v, the first duty cycle is between 35% and 40%, the second duty cycle is between 50% and 60%, and the third duty cycle is between 65% and 75%.
Referring to fig. 1 and 2, a control method can be described by this embodiment, and the control method has the following steps:
in step S11, a DC high voltage is generated by the rectifying circuit unit 1 and outputted from the DC high voltage output terminal 12.
Step S12, a control signal is generated by the controller 2 and outputted from the control output terminal 21.
In step S13, a pre-pulse with an initial duty cycle is generated by the pulse generating module 4, and the pulse generating module 4 has a pre-pulse output 42 for outputting the pre-pulse.
In step S14, the pulse wave operation module 6 generates a secondary pulse wave with the initial duty ratio according to the pre-pulse wave and outputs the secondary pulse wave from the post-pulse wave output terminal 63.
In step S15, the driving module 7 modulates the DC high voltage according to the sub-pulse to generate a front DC regulated output voltage, wherein the voltage value of the front DC regulated output voltage is substantially greater than 90V, and the feedback voltage is provided through the feedback voltage output terminal 73.
Specifically, the driving module 7 generates a source current through the field effect transistor 76 in the on mode and outputs the source current from the source terminal 763, and the source current flows through the feedback resistor 77 to provide the feedback voltage.
Step S16, the feedback judgment module 5 receives the feedback voltage, generates a corresponding feedback judgment signal according to the voltage value of the feedback voltage, and outputs the feedback judgment signal at the feedback judgment output end 52.
In step S17, the pulse wave operation module 6 receives the front pulse wave and the feedback judgment signal through the pulse wave input terminal 61 and the operation input terminal 62 respectively to generate a rear pulse wave, and outputs the rear pulse wave from the rear pulse wave output terminal 63, wherein the regulating duty ratio of the rear pulse wave corresponds to the voltage value of the feedback voltage.
In step S18, the driving module 7 modulates the DC high voltage according to the back pulse wave to generate a DC regulated output voltage, and outputs the DC regulated output voltage from the driving voltage output positive terminal 74 and the driving voltage output negative terminal 75, wherein the voltage value of the DC regulated output voltage corresponds to the voltage value of the feedback voltage, and the voltage value of the DC regulated output voltage is substantially greater than 90 volts.
Step S19, receiving the DC regulated output voltage by the high voltage DC motor 8, and regulating the rotation speed according to the received DC regulated output voltage, thereby enabling the needle to coordinate and move along the up-down direction.
In summary, in the electric control device for a hvdc motor according to the present invention, since the feedback voltage is inversely related to the rotation speed of the hvdc motor 8, the feedback judgment module 5 of the regulation circuit unit 3 receives the feedback voltage, and the feedback judgment module 5 can judge the rotation speed of the motor according to the feedback voltage and generate the feedback judgment signal, so that the pulse wave operation module 6 generates the rear pulse wave, and the driving module 7 modulates the dc regulation output voltage according to the rear pulse wave in combination with the dc high voltage, and the hvdc motor 8 can regulate the rotation speed according to the dc regulation output voltage.
In addition, the electric control device for the high-voltage direct current motor can directly apply and control the high-voltage direct current motor 8 without reducing the voltage after converting the alternating current of the alternating current power supply 9 into a direct current form, and can reduce the loss during power transmission in use.
Therefore, the object of the present invention can be achieved.
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a high voltage direct current motor electrically controlled device, is applicable to a sewing machine and an alternating current power supply, and this sewing machine includes a syringe needle of following an upper and lower direction and actuating, its characterized in that, this high voltage direct current motor electrically controlled device contains:
the rectification circuit unit comprises an alternating current power supply input end electrically connected with an alternating current power supply and a direct current high voltage output end, and is used for converting a direct current high voltage which is in a direct current form and has a voltage value substantially greater than 100 volts and outputting the direct current high voltage from the direct current high voltage output end;
the controller comprises a regulation output end, and is used for generating a control signal and outputting the control signal from the regulation output end;
a regulation circuit unit comprising:
the pulse wave generation module is provided with a regulation input end electrically connected with the regulation output end and a front pulse wave output end, and generates a front pulse wave with an initial duty ratio according to the control signal and outputs the front pulse wave output end;
the feedback judgment module is provided with a feedback judgment input end for receiving feedback voltage and a feedback judgment output end, and generates a corresponding feedback judgment signal according to the voltage value of the feedback voltage and outputs the feedback judgment signal from the feedback judgment output end;
the pulse wave operation module is provided with an operation input end electrically connected with the feedback judgment output end, a pulse wave input end electrically connected with the front pulse wave output end and a rear pulse wave output end, and generates a rear pulse wave with a regulation duty ratio according to the front pulse wave and the feedback judgment signal and outputs the rear pulse wave from the rear pulse wave output end, wherein the regulation duty ratio corresponds to the voltage value of the feedback voltage;
the driving module is provided with a driving power supply end electrically connected with the direct current high voltage output end, a driving input end electrically connected with the rear pulse wave output end, a feedback voltage output end electrically connected with the feedback judgment input end, a driving voltage output positive end and a driving voltage output negative end, the driving module modulates the direct current high voltage by the rear pulse wave so as to generate a direct current regulation output voltage and output the direct current regulation output voltage to the driving voltage output positive end and the driving voltage output negative end, and the voltage value of the direct current regulation output voltage corresponds to the voltage value of the feedback voltage; a kind of electronic device with high-pressure air-conditioning system
The high-voltage direct current motor is electrically connected with the positive end of the driving voltage output and the negative end of the driving voltage output so as to receive the direct current regulation output voltage, the voltage value of the direct current regulation output voltage is substantially larger than 90 volts, and the high-voltage direct current motor adjusts the rotating speed according to the received direct current regulation output voltage and jointly controls the needle to coordinate and move along the up-down direction.
2. The electric control device of claim 1, wherein the driving module further comprises a field effect transistor device and a feedback resistor connected to the ground, the field effect transistor device comprises a gate terminal electrically connected to the driving input terminal, a drain terminal electrically connected to the driving voltage output negative terminal, and a source terminal electrically connected to the feedback voltage output terminal and an end of the feedback resistor not connected to the ground, the driving module switches the field effect transistor device between an on mode and an off mode by receiving a back pulse, when the driving module is in the on mode, the drain terminal is in electrical communication with the source terminal, when the driving module is in the off mode, the drain terminal is disconnected from the source terminal, the field effect transistor device modulates the dc high voltage to generate the dc regulated output voltage by a regulated duty ratio after the back pulse, a total unit time of a single time required for the field effect transistor device to be on mode and a single time required for the field effect transistor device to be off mode is defined, and the duty ratio is a unit time required for the field effect transistor device to be on mode, and the duty ratio corresponds to the regulated duty ratio of the dc regulated output voltage.
3. The apparatus of claim 1, wherein the feedback judgment module generates a feedback judgment signal according to the feedback voltage, the feedback judgment signal is one of a first feedback judgment signal, a second feedback judgment signal and a third feedback judgment signal, a first feedback judgment signal is defined by a voltage value of the feedback voltage, a second feedback judgment signal with a first voltage value greater than the first feedback judgment signal, and a third feedback judgment signal with a first voltage value greater than the second feedback judgment signal, when the feedback judgment module judges that the feedback voltage is not less than the third feedback judgment signal, a third feedback judgment signal is generated, when the feedback judgment module judges that the feedback voltage is not less than the second feedback judgment signal and is less than the third feedback judgment signal, a second feedback judgment signal is generated, when the feedback judgment module judges that the feedback voltage is not less than the first feedback judgment signal and is less than the second feedback judgment signal, a first feedback judgment signal is generated, and when the feedback judgment module judges that the feedback voltage is not less than the first feedback judgment signal is greater than the second feedback judgment signal is compared with the first duty ratio, and when the feedback judgment module judges that the feedback voltage is greater than the first duty ratio is compared with the second duty ratio.
4. The electric control device of claim 3, wherein the first feedback level is between 0.2 v and 0.35 v, the second feedback level is between 0.7 v and 1.0 v, the third feedback level is between 1.2 v and 1.5 v, the first duty cycle is between 35% and 40%, the second duty cycle is between 50% and 60%, and the third duty cycle is between 65% and 75%.
5. The electric control device of claim 4, wherein the voltage value of the dc high voltage generated by the rectifying circuit unit is between 100 volts and 120 volts.
6. The electric control device of claim 3, wherein the first feedback level is between 1.4 volts and 1.6 volts, the second feedback level is between 1.7 volts and 1.85 volts, the third feedback level is between 1.9 volts and 2.1 volts, the first duty cycle is between 35% and 40%, the second duty cycle is between 50% and 60%, and the third duty cycle is between 65% and 75%.
7. The electric control device of claim 6, wherein the dc high voltage generated by the rectifying circuit unit has a voltage value between 220 v and 240 v.
8. A control method based on the high-voltage direct current motor electric control device of any one of claims 1-7, which is suitable for a sewing machine and an alternating current power supply, wherein the sewing machine comprises a needle head which moves along an up-down direction, and the control method of the high-voltage direct current motor electric control device is characterized by comprising the following steps:
the rectification circuit unit is electrically connected with the alternating current power supply to convert a direct current high voltage which is in a direct current form and has a voltage value substantially larger than 100 volts, and comprises an alternating current power supply input end electrically connected with the alternating current power supply and a direct current high voltage output end for outputting the direct current high voltage;
generating a front pulse wave with an initial duty ratio by a pulse wave generating module in a regulating circuit unit, wherein the pulse wave generating module is provided with a front pulse wave output end for outputting the front pulse wave;
receiving a feedback voltage by a feedback judgment module in the regulation circuit unit, and generating a corresponding feedback judgment signal according to the voltage value of the feedback voltage, wherein the feedback judgment module is provided with a feedback judgment input end for receiving the feedback voltage and a feedback judgment output end for outputting the feedback judgment signal;
a pulse wave operation module in the regulation circuit unit generates a back pulse wave with a regulation duty ratio according to the front pulse wave and the feedback judgment signal, wherein the regulation duty ratio corresponds to the voltage value of the feedback voltage, and the pulse wave operation module is provided with a pulse wave input end electrically connected with the front pulse wave output end, a back pulse wave output end for outputting the back pulse wave and an operation input end electrically connected with the feedback judgment output end;
a driving module in the regulating circuit unit modulates the direct current high voltage by the back pulse wave to generate a direct current regulating output voltage, wherein the voltage value of the direct current regulating output voltage corresponds to the voltage value of the feedback voltage, and the voltage value of the direct current regulating output voltage is substantially larger than 90 volts, and the driving module is provided with a driving power supply end electrically connected with the direct current high voltage output end, a driving input end electrically connected with the back pulse wave output end, a feedback voltage output end electrically connected with the feedback judgment input end, and a driving voltage output positive end and a driving voltage output negative end for outputting the direct current regulating output voltage;
the high-voltage DC motor is used for receiving the DC regulation output voltage and regulating the rotating speed according to the received DC regulation output voltage, so that the needle head is matched and operated along the up-down direction.
9. The control method of an electric control device for a high voltage direct current motor as recited in claim 8, further comprising the steps of, between the step (B) and the step (C):
the pulse wave operation module generates a secondary pulse wave with an initial duty ratio according to the front pulse wave and outputs the secondary pulse wave from the rear pulse wave output end;
the driving module modulates the DC high voltage by the secondary pulse wave to generate a front DC regulated output voltage, the voltage value of the front DC regulated output voltage is substantially greater than 90 volts, and the feedback voltage is provided to the feedback judgment input end by the feedback voltage output end.
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