CN111800016A - Speed regulation controller, speed regulation control system and speed regulation control method - Google Patents
Speed regulation controller, speed regulation control system and speed regulation control method Download PDFInfo
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- CN111800016A CN111800016A CN202010768261.3A CN202010768261A CN111800016A CN 111800016 A CN111800016 A CN 111800016A CN 202010768261 A CN202010768261 A CN 202010768261A CN 111800016 A CN111800016 A CN 111800016A
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- control
- speed regulation
- pulse width
- width modulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
Abstract
The invention discloses a speed regulation controller, a speed regulation control system and a speed regulation control method. The speed regulation controller comprises: the device comprises a transformer, a rectifying circuit, a switching tube, a pulse width modulation module, a communication isolation circuit and a control module; the switching tube is connected in series with a primary side loop of the transformer, and the rectifying circuit is connected with a secondary side of the transformer; the PWM signal end of the pulse width modulation module is connected with the control end of the switching tube and is used for controlling the switching tube to be conducted or cut off so as to control the current output by the rectifying circuit; the control module is connected with the communication end of the pulse width modulation module through a communication isolation circuit; the control module receives the setting parameters of the upper computer and outputs control signals corresponding to the setting parameters to the pulse width modulation module, and the pulse width modulation module outputs PWM signals from the PWM signal end based on the control signals. The invention can make one speed-regulating controller suitable for different speed-regulating actuators, thereby reducing the time required by the authentication of the speed-regulating controller and reducing the authentication cost.
Description
Technical Field
The embodiment of the invention relates to the technical field of speed regulation control, in particular to a speed regulation controller, a speed regulation control system and a speed regulation control method.
Background
The safety electrical equipment of the nuclear power plant, namely the electrical equipment with the safety level of 1E, is used for emergency shutdown of a reactor, containment isolation, emergency cooling of a reactor core, heat discharge from a containment and other electrical equipment mainly used for preventing radioactive substances from releasing excessively to the environment, and comprises a motor, an electrical appliance, a cable, a storage battery, a charger, a control protection device and the like. All these electrical devices, in the event of a fault, affect the nuclear safety of the nuclear power plant. Safety-class electrical devices must be subjected to strict quality tests and comply with specific technical conditions and installation requirements.
All speed regulation controller software applied to nuclear power needs to pass V & V demonstration (Verification & Validation). In the prior art, different speed-regulating actuators correspond to different speed-regulating controllers, and the software of each speed-regulating controller needs to be demonstrated through V & V. Therefore, the existing speed regulation controller has the problem of poor adaptability.
Disclosure of Invention
The embodiment of the invention provides a speed regulation controller, a speed regulation control system and a speed regulation control method, so that one speed regulation controller is suitable for different speed regulation actuators, the time required by authentication of the speed regulation controller is reduced, and the authentication cost is reduced.
In a first aspect, an embodiment of the present invention provides a speed regulation controller, where the speed regulation controller includes: the device comprises a transformer, a rectifying circuit, a switching tube, a pulse width modulation module, a communication isolation circuit and a control module;
the switching tube is connected in series with a primary side loop of the transformer, and the rectifying circuit is connected with a secondary side of the transformer;
the PWM signal end of the pulse width modulation module is connected with the control end of the switching tube and is used for controlling the switching tube to be switched on or switched off so as to control the current output by the rectifying circuit;
the control module is connected with the communication end of the pulse width modulation module through the communication isolation circuit; the control module receives set parameters of the upper computer and outputs control signals corresponding to the set parameters to the pulse width modulation module, and the pulse width modulation module outputs PWM signals from the PWM signal end based on the control signals.
Optionally, the communication isolation circuit comprises: an optical coupler; the first input end of the optical coupler is connected with the output end of the control module, the second input end of the optical coupler is connected with an output voltage ground, the first output end of the optical coupler is connected with the communication end of the pulse width modulation module, and the second output end of the optical coupler is connected with a power supply voltage ground.
Optionally, the speed controller further comprises: a feedback circuit; the input end of the feedback circuit is electrically connected with the output end of the rectifying circuit, and the output end of the feedback circuit is electrically connected with the feedback input end of the pulse width modulation module.
Optionally, the rectifier circuit includes a rectifier bridge, a first input end of the rectifier bridge is electrically connected to the first end of the secondary side of the transformer, and a second input end of the rectifier bridge is electrically connected to the second end of the secondary side of the transformer.
Optionally, the rectifier circuit further comprises a capacitor;
the capacitor is connected in parallel between the first output end of the rectifier bridge and the second output end of the rectifier bridge.
In a second aspect, an embodiment of the present invention provides a speed control system, where the speed control system includes: the upper computer and the speed regulation controller provided by any embodiment of the invention; and the output end of the upper computer is connected with the input end of a control module in the speed regulation controller.
Optionally, the output end of the upper computer is connected with the input end of a control module in the speed regulation controller through a 485 bus.
In a third aspect, an embodiment of the present invention provides a speed regulation control method, which is applied to a speed regulation control system provided in any embodiment of the present invention, where the speed regulation control method includes the following steps:
the upper computer outputs set parameters to the control module according to the current required by the speed regulation actuator connected with the output end of the speed regulation controller;
the control module forms a control signal according to the received set parameters and sends the control signal to a pulse width modulation module;
the pulse width modulation module outputs a PWM signal corresponding to the control signal, and controls the rectification circuit to output the current required by the speed regulation actuator.
Optionally, the pulse width modulation module outputs a PWM signal corresponding to the control signal, and controls the rectification circuit to output the current required by the speed regulation actuator, including:
the pulse width modulation module outputs a PWM signal corresponding to the control signal and controls the on or off of a switching tube according to the PWM signal;
the rectifying circuit outputs driving current according to the connection or disconnection of the switching tube.
Optionally, after the rectifying circuit outputs the driving current according to the on or off of the switching tube, the method further includes:
the feedback circuit collects the driving current and transmits the driving current to the pulse width modulation module;
the pulse width modulation module compares the driving current with the current required by a speed regulation actuator;
if the driving current is consistent with the current required by the speed regulation actuator, outputting the driving current;
if the driving current does not accord with the current required by the speed regulation actuator, the pulse width modulation module changes the switching frequency of the switching tube so as to enable the driving current output by the rectifying circuit to accord with the current required by the speed regulation actuator.
In the embodiment of the invention, the control module can output corresponding control signals according to the set parameters of the upper computer, and can control different speed regulating actuators to output driving currents in different ranges without changing application software and hardware. And the pulse width modulation module is connected with the control module through a communication isolation circuit, so that electrical isolation is realized, and the high reliability of the speed regulation controller is ensured. Therefore, compared with the prior art, the embodiment of the invention can enable one speed regulation controller to be suitable for different speed regulation actuators, thereby reducing the time required by the authentication of the speed regulation controller and reducing the authentication cost.
Drawings
Fig. 1 is a schematic structural diagram of a speed controller according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a speed controller according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a speed control system according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a speed control method according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of another speed control method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The embodiment of the invention provides a speed regulation controller. Fig. 1 is a schematic structural diagram of a speed regulation controller according to an embodiment of the present invention. As shown in fig. 1, the speed controller includes: transformer T1, rectifier circuit 110, switching tube 120, pulse width modulation module 130, communication isolation circuit 140 and control module 150.
The switch tube 120 is connected in series with the primary loop of the transformer T1, and the rectifying circuit 110 is connected with the secondary side of the transformer T1. The PWM signal terminal of the PWM module 130 is connected to the control terminal of the switching tube 120, and is used to control the switching tube 120 to be turned on or off, so as to control the current output by the rectifying circuit 110. The control module 150 is connected with the communication end of the pulse width modulation module 130 through the communication isolation circuit 140; the control module 150 receives the setting parameter of the upper computer and outputs a control signal corresponding to the setting parameter to the pulse width modulation module 130, and the pulse width modulation module 130 outputs a PWM signal from the PWM signal terminal based on the control signal.
The upper computer determines the required driving current according to the type of the speed-regulating actuator externally connected to the speed-regulating controller, and forms corresponding setting parameters according to the driving current to transmit to the control module 150. Alternatively, the setting parameter may include a range of the driving current corresponding to a speed regulation range of the speed regulation actuator or a specific value of the driving current corresponding to an adjustable speed of the speed regulation actuator. The control module 150 receives the setting parameters sent by the upper computer and performs data processing, converts the setting parameters into control signals and transmits the control signals to the pulse width modulation module 130 so as to control the output of the speed regulation controller. Illustratively, the Control module 150 may be a Micro Control Unit (MCU).
The control module 150 and the pulse width modulation module 130 are not directly electrically connected, but transmit signals through the communication isolation circuit 140, so that mutual interference between the two can be reduced.
The PWM module 130 receives the control signal output by the control module 150 and converts the PWM signal to output. The Pulse Width Modulation module 130 adopts a Pulse Width Modulation (PWM) technology, and controls the on/off of the switching tube 120 by using a digital output of a PWM signal terminal. Alternatively, the pulse width modulation module 130 may employ a digital control chip dedicated to PWM. Illustratively, the switch tube 120 may be a CMOS (Complementary Metal-Oxide-Semiconductor) switch tube.
The transformer T1 is used to match the ac input voltage with the dc output voltage and to electrically isolate the ac grid from the rectifier circuit 110.
The rectifying circuit 110 is used for converting the alternating current transmitted by the transformer T1 into direct current, and outputting a driving current required by a speed-regulating actuator externally connected to the speed-regulating controller according to the on-off frequency and period of the switching tube 120. Alternatively, the rectifier circuit 110 may employ an uncontrollable rectifier circuit, a half-controlled rectifier circuit, a full-controlled rectifier circuit, or the like.
When the speed-regulating actuator externally connected to the speed-regulating controller is changed, the upper computer outputs the setting parameters corresponding to the speed-regulating actuator to the control module 150. The control module 150 controls the duty ratio range or the modulation frequency of the PWM signal output by the pulse width modulation module 130, so that the rectifying circuit 110 can output the driving current required by the speed-regulating actuator. For example, the throttle control may be applied to a nuclear power plant. The speed regulation controller can meet the control requirements on different driving output currents. Illustratively, the externally connected governor actuator can be a WOODWARD governor (drive current range is 0-200mA), or a Hayntzmann governor (drive current range is 0-1A).
In the speed regulation controller provided by the embodiment of the invention, the control module can output corresponding control signals according to the set parameters of the upper computer, and can control different speed regulation actuators without changing application software and hardware and output driving currents in different ranges. And the pulse width modulation module is connected with the control module through a communication isolation circuit, so that electrical isolation is realized, and the high reliability of the speed regulation controller is ensured. Therefore, the embodiment of the invention can enable one speed regulation controller to be suitable for different speed regulation actuators, thereby reducing the time required by the authentication of the speed regulation controller and reducing the authentication cost.
Fig. 2 is a schematic circuit diagram of a speed controller according to an embodiment of the present invention. As shown in fig. 2, in addition to the above embodiment, the speed controller further includes a feedback circuit 220.
The input end of the feedback circuit 220 is electrically connected to the output end of the rectifying circuit 110, and the output end of the feedback circuit 220 is electrically connected to the feedback input end of the pulse width modulation module 130.
The feedback circuit 220 is used for collecting the current output by the speed controller and transmitting the current to the pulse modulation module 130. The pulse modulation module 130 compares the output current with a preset current, and if the difference between the output current and the preset current exceeds a preset range, the pulse modulation module 130 outputs a modified PWM signal, and controls the rectification circuit 110 to output the preset current by controlling the on/off of the switching tube 120. Optionally, the feedback circuit 220 may collect the voltage output by the rectifying circuit 110, convert the voltage into an output current, and transmit the output current to the pulse modulation module 130.
In the embodiment, the feedback circuit is introduced, so that the matching condition of the output current and the preset current is detected in real time, and the error of the output current is reduced.
With continued reference to fig. 2, based on the above embodiments, further, the communication isolation circuit includes: an optical coupler 210.
A first input terminal of the optocoupler 210 is connected to the output terminal of the control module 150, a second input terminal of the optocoupler 210 is connected to the output voltage ground, a first output terminal of the optocoupler 210 is connected to the communication terminal of the pulse width modulation module 130, and a second output terminal of the optocoupler 210 is connected to the supply voltage ground.
The optocoupler 210 is essentially a device that transfers electrical signals through the medium of light, and typically encloses a light emitter (e.g., a light emitting diode) and a light receiver (e.g., a photosensitive semiconductor tube) in the same package. When the first input end is electrified with a signal, the light emitter emits light, and the light receiver generates photocurrent after receiving the light, and the photocurrent flows out from the first output end, so that the 'electricity-light-electricity' conversion is realized.
The optical coupler 210 has the advantages of long service life, strong anti-interference capability, insulation between output and input, unidirectional signal transmission and the like, and can ensure the stable transmission of the control signal of the control module 150.
With continued reference to fig. 2, on the basis of the above embodiments, further, the rectifier circuit 110 includes a rectifier bridge 111. A first input terminal 1 of the rectifier bridge 111 is electrically connected to a first terminal of the secondary side of the transformer T1, and a second input terminal 3 of the rectifier bridge 111 is electrically connected to a second terminal of the secondary side of the transformer T1.
The rectifier bridge 111 can convert the negative half cycle of the alternating voltage input from the transformer T1 to the positive half cycle, so that the utilization rate of the electric energy of the power supply is improved.
Further, the rectifier circuit 110 further includes a capacitor C1; the capacitor C1 is connected in parallel between the first output terminal 2 of the rectifier bridge 111 and the second output terminal 4 of the rectifier bridge 111.
The capacitor C1 can filter out noise wave in the output current, so that the speed controller can realize stable DC output.
The embodiment of the invention also provides a speed regulation control system. Fig. 3 is a schematic structural diagram of a speed regulation control system according to an embodiment of the present invention. As shown in fig. 3, the speed control system includes: an upper computer 310 and a throttle controller 100 as provided by any embodiment of the invention.
The output end of the upper computer 310 is connected with the input end of the control module 150 in the speed-regulating controller 100.
Optionally, the output end of the upper computer 310 is connected to the input end of the control module 150 in the speed controller 110 through a 485 bus.
The upper computer 310 is used for determining the driving current required by the actuator according to the type of the speed-regulating actuator externally connected to the speed-regulating controller 100, and forming setting parameters to transmit to the control module 150. And the upper computer 310 is only used for generating set parameters to the control module 150, and after the set parameters are transmitted, the upper computer 310 does not participate in any data processing operation in the speed regulation controller 100. Illustratively, the upper computer 310 may be a computer, an industrial personal computer, a workstation, or the like that directly issues manipulation commands. Optionally, the upper computer 310 may include a display screen for displaying changes of various signals.
When the method is applied to a nuclear power plant, software in the speed regulation controller 100 needs to be demonstrated through V & V, the time and cost required by the V & V demonstration are long, and the software in the speed regulation controller 100 cannot be changed once the software passes the V & V demonstration. Therefore, the upper computer 310 is required to change the setting parameters according to the type of the external speed-regulating actuator, the control module 150 only controls the output of the speed-regulating controller 100 according to the received setting parameters, and the control module 150 does not judge the requirement of the external speed-regulating actuator.
In the speed regulation control system provided by the embodiment of the invention, the upper computer changes the set parameters according to the type of the speed regulation actuator, so that the speed regulation control system can be applied to control of different speed regulation actuators.
The embodiment of the invention also provides a speed regulation control method which is applied to the speed regulation control system provided by any embodiment of the invention and has corresponding beneficial effects.
Fig. 4 is a schematic flow chart of a speed control method according to an embodiment of the present invention. As shown in fig. 4, the speed regulation control method includes the following steps:
and S110, the upper computer outputs set parameters to the control module according to the current required by the speed regulation actuator connected with the output end of the speed regulation controller.
The upper computer can be a computer, an industrial personal computer, a workstation and the like which can directly send out control commands. The upper computer can adopt the modes of a keyboard, voice, a touch screen and the like to form set parameters. The setting parameter may include a range of the driving current corresponding to a speed-adjusting range of the speed-adjusting actuator or a specific value of the driving current corresponding to an adjustable speed of the speed-adjusting actuator.
And S120, the control module forms a control signal according to the received set parameters and sends the control signal to the pulse width modulation module.
The control module can be an MCU (microprogrammed control unit), the control module can have an independent communication protocol, and the upper computer and the control module can communicate through an RS485 serial port. In order to ensure that signals do not interfere with each other, the control module and the pulse width modulation module can be connected through a communication isolation circuit.
And S130, the pulse width modulation module outputs a PWM signal corresponding to the control signal to control the rectifying circuit to output the current required by the speed regulation actuator.
The pulse width modulation module can adopt a digital control chip special for PWM. The pulse width modulation module interprets the control signal into a corresponding PWM signal, which is equivalent to controlling the output of the rectifying circuit through a time sequence signal.
Optionally, the step S130 may include: the pulse width modulation module outputs a PWM signal corresponding to the control signal and controls the on or off of the switching tube according to the PWM signal; the rectifying circuit outputs driving current according to the connection or disconnection of the switching tube.
According to the speed regulation control method provided by the embodiment of the invention, the control module can output corresponding control signals according to the set parameters of the upper computer, so that different speed regulation actuators are controlled, and driving currents in different ranges are output. Therefore, the embodiment of the invention can enable one speed regulation controller to be suitable for different speed regulation actuators, thereby reducing the time required by the authentication of the speed regulation controller and reducing the authentication cost.
Fig. 5 is a schematic flow chart of another speed control method according to an embodiment of the present invention. On the basis of the above embodiments, the present embodiment adds a feedback mechanism. As shown in fig. 5, the speed regulation control method includes the following steps:
and S210, the upper computer outputs set parameters to the control module according to the current required by the speed regulation actuator connected with the output end of the speed regulation controller.
And S220, the control module forms a control signal according to the received set parameters and sends the control signal to the pulse width modulation module.
And S230, the pulse width modulation module outputs a PWM signal corresponding to the control signal and controls the switch tube to be switched on or switched off according to the PWM signal.
And S240, the rectifying circuit outputs driving current according to the on or off of the switching tube.
Wherein, the type of switch tube can be selected according to actual demand by oneself. Illustratively, the switch tube may be a CMOS switch tube.
And S250, the feedback circuit collects the driving current and transmits the driving current to the pulse width modulation module.
Optionally, the feedback circuit may collect the voltage output by the rectifying circuit, convert the voltage into a driving current, and transmit the driving current to the pulse modulation module.
And S260, judging whether the driving current is consistent with the current required by the speed regulating actuator, if so, executing S280, and otherwise, executing S270.
Wherein, the comparing and judging step is carried out by a pulse width modulation module. When the difference value between the driving current and the current required by the speed regulating actuator is smaller than a preset value, the driving current can be considered to be consistent with the current required by the speed regulating actuator, otherwise, the driving current is not consistent with the current required by the speed regulating actuator.
S270, the pulse width modulation module changes the switching frequency of the switching tube so that the driving current output by the rectifying circuit conforms to the current required by the speed regulation actuator.
The control module and the pulse width modulation module are connected through the communication isolation module, and due to the unidirectional signal transmission of the communication isolation module, the judgment about the feedback signal and the subsequent control processing in the S260 and the S270 are completed by the pulse width modulation module, and the control module does not participate in the processing of the feedback signal of the feedback circuit.
And S280, outputting the driving current.
In the embodiment, a feedback mechanism is introduced, so that the matching condition of the driving current and the current required by the speed regulating actuator is detected in real time, the driving current output by the rectifying circuit can be corrected, and the error of the output current is reduced.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A speed controller, comprising: the device comprises a transformer, a rectifying circuit, a switching tube, a pulse width modulation module, a communication isolation circuit and a control module;
the switching tube is connected in series with a primary side loop of the transformer, and the rectifying circuit is connected with a secondary side of the transformer;
the PWM signal end of the pulse width modulation module is connected with the control end of the switching tube and is used for controlling the switching tube to be switched on or switched off so as to control the current output by the rectifying circuit;
the control module is connected with the communication end of the pulse width modulation module through the communication isolation circuit; the control module receives set parameters of the upper computer and outputs control signals corresponding to the set parameters to the pulse width modulation module, and the pulse width modulation module outputs PWM signals from the PWM signal end based on the control signals.
2. The throttle controller of claim 1, wherein the communication isolation circuit comprises: an optical coupler; the first input end of the optical coupler is connected with the output end of the control module, the second input end of the optical coupler is connected with an output voltage ground, the first output end of the optical coupler is connected with the communication end of the pulse width modulation module, and the second output end of the optical coupler is connected with a power supply voltage ground.
3. The throttle control of claim 1, further comprising: a feedback circuit; the input end of the feedback circuit is electrically connected with the output end of the rectifying circuit, and the output end of the feedback circuit is electrically connected with the feedback input end of the pulse width modulation module.
4. The speed governing controller of claim 1, wherein the rectifier circuit comprises a rectifier bridge, a first input terminal of the rectifier bridge being electrically connected to a first end of the secondary side of the transformer, and a second input terminal of the rectifier bridge being electrically connected to a second end of the secondary side of the transformer.
5. The speed governing controller of claim 4, wherein the rectification circuit further comprises a capacitor;
the capacitor is connected in parallel between the first output end of the rectifier bridge and the second output end of the rectifier bridge.
6. A speed control system, comprising: an upper computer and a throttle controller according to any one of claims 1 to 5; and the output end of the upper computer is connected with the input end of a control module in the speed regulation controller.
7. The speed regulation control system of claim 6, wherein the output end of the upper computer is connected with the input end of the control module in the speed regulation controller through a 485 bus.
8. A speed control method applied to the speed control system according to claim 6 or 7, characterized by comprising the steps of:
the upper computer outputs set parameters to the control module according to the current required by the speed regulation actuator connected with the output end of the speed regulation controller;
the control module forms a control signal according to the received set parameters and sends the control signal to a pulse width modulation module;
the pulse width modulation module outputs a PWM signal corresponding to the control signal, and controls the rectification circuit to output the current required by the speed regulation actuator.
9. The speed-regulating control method according to claim 8, wherein the pulse width modulation module outputs a PWM signal corresponding to the control signal, and the control rectification circuit outputs a current required by the speed-regulating actuator, including:
the pulse width modulation module outputs a PWM signal corresponding to the control signal and controls the on or off of a switching tube according to the PWM signal;
the rectifying circuit outputs driving current according to the connection or disconnection of the switching tube.
10. The speed regulation control method according to claim 9, further comprising, after the rectifying circuit outputs the driving current according to the on or off of the switching tube:
the feedback circuit collects the driving current and transmits the driving current to the pulse width modulation module;
the pulse width modulation module compares the driving current with the current required by a speed regulation actuator;
if the driving current is consistent with the current required by the speed regulation actuator, outputting the driving current;
if the driving current does not accord with the current required by the speed regulation actuator, the pulse width modulation module changes the switching frequency of the switching tube so as to enable the driving current output by the rectifying circuit to accord with the current required by the speed regulation actuator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010768261.3A CN111800016A (en) | 2020-08-03 | 2020-08-03 | Speed regulation controller, speed regulation control system and speed regulation control method |
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| CN202010768261.3A CN111800016A (en) | 2020-08-03 | 2020-08-03 | Speed regulation controller, speed regulation control system and speed regulation control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113022336A (en) * | 2021-05-11 | 2021-06-25 | 江苏方天电力技术有限公司 | Wireless charging processing method, system and circuit, electric automobile and charging pile |
| CN114095089A (en) * | 2021-11-24 | 2022-02-25 | 北部湾大学 | Simple wireless laser voice communication system |
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2020
- 2020-08-03 CN CN202010768261.3A patent/CN111800016A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113022336A (en) * | 2021-05-11 | 2021-06-25 | 江苏方天电力技术有限公司 | Wireless charging processing method, system and circuit, electric automobile and charging pile |
| CN113022336B (en) * | 2021-05-11 | 2024-03-12 | 江苏方天电力技术有限公司 | Wireless charging processing method, system, circuit, electric automobile and charging pile |
| CN114095089A (en) * | 2021-11-24 | 2022-02-25 | 北部湾大学 | Simple wireless laser voice communication system |
| CN114095089B (en) * | 2021-11-24 | 2023-11-07 | 北部湾大学 | Wireless laser sound communication system |
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Inventor after: Chen Xin Inventor after: Huang Danqing Inventor after: Guo Xingang Inventor after: Zhang Lanqi Inventor after: Liu Shunxing Inventor after: Sun Zhenyang Inventor after: Han Jinlong Inventor after: Guan Jiahuan Inventor before: Chen Xin Inventor before: Huang Danqing Inventor before: Guo Xingang Inventor before: Zhang Lanqi Inventor before: Liu Shunxing Inventor before: Sun Zhenyang Inventor before: Han Jinlong Inventor before: Guan Jiahuan |