CN218633616U - Motor controller and electric device - Google Patents
Motor controller and electric device Download PDFInfo
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- CN218633616U CN218633616U CN202222295881.7U CN202222295881U CN218633616U CN 218633616 U CN218633616 U CN 218633616U CN 202222295881 U CN202222295881 U CN 202222295881U CN 218633616 U CN218633616 U CN 218633616U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model discloses a machine controller and electric actuator, this controller are used for controlling radiator fan's rotational speed, include: the temperature acquisition circuit is used for detecting the temperature of the surrounding environment and outputting a corresponding temperature acquisition signal; the first input end of the temperature comparison circuit is used for accessing a reference temperature signal, the second input end of the temperature comparison circuit is connected with the output end of the temperature acquisition circuit and is used for comparing the temperature acquisition signal with the reference temperature signal and outputting a first trigger signal/a second trigger signal according to the magnitude relation between the temperature acquisition signal and the reference temperature signal; the single chip microcomputer is connected with the temperature comparison circuit and used for outputting an acceleration control signal when receiving the first trigger signal and outputting a deceleration control signal when receiving the second trigger signal; and the motor driving circuit is used for driving the motor to accelerate and decelerate according to the received acceleration signal/deceleration control signal. The utility model provides the high flexibility of radiator fan work.
Description
Technical Field
The utility model relates to a protection circuit field, in particular to machine controller and electric actuator.
Background
The heat radiation fan is used as a part of a heat radiation system of the electric device, has important functions, particularly has the function of auxiliary heat radiation under the conditions of hot weather and air conditioner work, and can ensure that an engine and a lubricating mechanism thereof work in the best state. And traditional radiator fan, its rotational speed adjustability is poor, generally only high, two kinds of operating condition of low-speed, realizes the mode adjustment again through the resistance current-limiting, and radiator fan's flexibility ratio is not high, can not be timely adjust according to the temperature of reality for electric actuator has the condition that the temperature is too big in service, thereby has shortened electric actuator's life.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a machine controller and electric actuator aims at improving the flexibility of radiator fan work.
In order to achieve the above object, the utility model provides a motor controller, include:
the temperature acquisition circuit is used for detecting the temperature of the surrounding environment and outputting a corresponding temperature acquisition signal;
the temperature comparison circuit is used for comparing the temperature acquisition signal with the reference temperature signal, outputting a first trigger signal when the temperature acquisition signal is greater than the reference temperature signal, and outputting a second trigger signal when the temperature acquisition signal is less than the reference temperature signal;
the single chip microcomputer is connected with the temperature comparison circuit and is used for outputting an acceleration control signal when receiving a first trigger signal and outputting a deceleration control signal when receiving a second trigger signal;
the motor drive circuit, motor drive circuit's controlled end with the output of singlechip is connected, motor drive circuit's output with the motor is connected, motor drive circuit is used for receiving drive when accelerating signal the motor is accelerated, motor drive circuit still is used for receiving drive when decelerating the signal the motor slows down.
Optionally, the temperature acquisition circuit includes a first resistor, a second resistor, a thermistor, and a first capacitor, a first end of the first resistor is connected to a power supply terminal, a second end of the first resistor is interconnected with a first end of the second resistor, a first end of the first capacitor, and a first end of the thermistor, a second end of the first capacitor and a second end of the thermistor are grounded, and a second end of the second resistor is connected to a second input terminal of the temperature comparison circuit.
Optionally, the motor controller further includes a temperature compensation circuit, an input end of the temperature compensation circuit is connected to an output end of the temperature acquisition circuit, an output end of the temperature compensation circuit is connected to a second input end of the temperature comparison circuit, and the temperature compensation circuit is configured to perform compensation processing on the temperature acquisition signal and output the temperature acquisition signal to the temperature comparison circuit.
Optionally, the temperature compensation circuit includes a first amplifier, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a second capacitor, a third capacitor, and a fourth capacitor, a first end of the third resistor is grounded, a second end of the third resistor is connected to the non-inverting input terminal of the first amplifier, a first end of the fourth resistor is interconnected with a first end of the second capacitor and the output terminal of the temperature acquisition circuit, a second end of the second capacitor is connected to a first end of the fifth resistor, a second end of the fourth resistor, a second end of the fifth resistor, a first end of the sixth resistor, and a first end of the third capacitor are interconnected with the inverting input terminal of the first amplifier, a second end of the sixth resistor is connected to a first end of the fourth capacitor, and a second end of the third capacitor and a second end of the fourth capacitor are interconnected with the output terminal of the first amplifier.
Optionally, the temperature comparison circuit includes a second amplifier, a seventh resistor, an eighth resistor, and a ninth resistor, the seventh resistor is serially connected between the positive phase input terminal of the second amplifier and the output terminal of the temperature acquisition circuit, a first end of the eighth resistor is used for accessing a reference temperature signal, a second end of the eighth resistor is connected to the negative phase input terminal of the second amplifier, the ninth resistor is serially connected between the negative phase input terminal of the second amplifier and the output terminal of the second amplifier, and the output terminal of the second amplifier is connected to the single chip.
Optionally, the motor drive circuit comprises:
the input end of the driving amplification circuit is connected with the single chip microcomputer, and the driving amplification circuit is used for amplifying the acceleration control signal/the deceleration control signal;
the input end of the bridge arm circuit is connected with the output end of the driving amplification circuit, the output end of the bridge arm circuit is connected with the motor, and the bridge arm circuit is used for driving the motor to accelerate/decelerate according to the received acceleration control signal/deceleration control signal.
Optionally, the bridge arm circuit includes a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, where gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, and the fourth MOS transistor are all connected to an output end of the controller, a source of the first MOS transistor and a drain of the second MOS transistor are connected to the first end of the motor, a drain of the first MOS transistor and a drain of the third MOS transistor are connected to the dc power supply, a source of the second MOS transistor and a source of the fourth MOS transistor are grounded, and a source of the third MOS transistor and a drain of the fourth MOS transistor are connected to the second end of the motor.
Optionally, the driving amplifying circuit includes a tenth resistor, an eleventh resistor, a twelfth resistor, and a first triode, a first end of the tenth resistor is connected to a first end of the eleventh resistor, and is an input end of the driving amplifying circuit, a second end of the tenth resistor is connected to a base of the first triode, an emitter of the first triode and a second end of the eleventh resistor are grounded, a collector of the first triode is connected to a first end of the twelfth resistor, and is an output end of the driving amplifying circuit, and a second end of the twelfth resistor is connected to a power source end.
The utility model provides an electric actuator, electric actuator includes as above motor controller and radiator fan, motor controller is used for control radiator fan's slew velocity.
Optionally, the heat dissipation fan comprises a first stator, a fan blade and a second stator;
the fan blade is in a right trapezoid shape, the fan blade is connected between the first fixing piece and the second fixing piece, the longer bottom edge of the fan blade is connected with the first fixing piece, and the shorter bottom edge of the fan blade is connected with the second fixing piece.
The utility model discloses a set up temperature acquisition circuit, temperature comparison circuit, singlechip and motor drive circuit. The temperature acquisition circuit is used for detecting the temperature of the surrounding environment and outputting a corresponding temperature acquisition signal; the first input end of the temperature comparison circuit is used for accessing a reference temperature signal, the second input end of the temperature comparison circuit is connected with the output end of the temperature acquisition circuit and is used for comparing the temperature acquisition signal with the reference temperature signal, outputting a first trigger signal when the temperature acquisition signal is greater than the reference temperature signal, and outputting a second trigger signal when the temperature acquisition signal is less than the reference temperature signal; the singlechip is used for outputting an acceleration control signal when receiving the first trigger signal and outputting a deceleration control signal when receiving the second trigger signal; the motor driving circuit drives the motor to accelerate when receiving the acceleration signal, and drives the motor to decelerate when receiving the deceleration signal. When the temperature acquisition circuit works, when the temperature signal acquired by the temperature acquisition circuit is higher than the reference temperature, the singlechip controls the motor driving circuit to drive the motor to accelerate, and the rotating speed of the cooling fan is increased, so that the temperature of the surrounding environment is reduced; when the temperature collected by the temperature collecting circuit is lower than the reference temperature, the single chip controls the motor driving circuit to drive the motor to decelerate, the rotating speed of the cooling fan is reduced, and the temperature of the surrounding environment is increased. The motor controller in this embodiment adjusts the temperature of the surrounding environment in real time by controlling the rotation of the cooling fan and maintains the temperature at the reference temperature, so that the cooling fan has higher flexibility and better cooling effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of functional modules of an embodiment of a motor controller according to the present invention;
FIG. 2 is a schematic circuit diagram of an embodiment of the temperature acquisition circuit of FIG. 1;
fig. 3 is a schematic circuit diagram of an embodiment of the temperature compensation circuit of the present invention;
FIG. 4 is a circuit diagram of an embodiment of the temperature comparison circuit of FIG. 1;
fig. 5 is a schematic circuit diagram of an embodiment of the bridge arm circuit of the present invention;
fig. 6 is a schematic circuit diagram of an embodiment of the driving amplifier circuit of the present invention;
fig. 7 is a structural diagram of an embodiment of the heat dissipation fan of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
20 | |
| 30 | |
40 | |
| 21 | Temperature compensation circuit | R1-R12 | First resistance-twelfth resistance |
| C1-C4 | First capacitor-fourth capacitor | A1-A2 | First to second amplifiers |
| RT | Thermal resistor | Q1-Q4 | First MOS transistor-fourth MOS transistor |
| Q11 | A |
1 | |
| 2 | |
3 | |
| 4 | Second fixing sheet |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The heat radiation fan is used as a part of a heat radiation system of the electric device, has important functions, particularly has the function of auxiliary heat radiation under the conditions of hot weather and air conditioner work, and can ensure that an engine and a lubricating mechanism thereof work in the best state. Traditional radiator fan's flexibility ratio is not high, can not be timely adjust according to the temperature of reality for electric actuator has the condition of the temperature too big in service, thereby has shortened electric actuator's life.
The utility model provides a machine controller for control radiator fan's rotational speed for radiator fan can be timely adjusts according to the temperature of reality, improves radiator fan's effect.
Referring to fig. 1, in an embodiment of the present invention, the motor controller includes:
the temperature acquisition circuit 10 is used for detecting the temperature of the surrounding environment and outputting a corresponding temperature acquisition signal;
a temperature comparison circuit 20, a first input end of the temperature comparison circuit 20 is used for accessing a reference temperature signal, a second input end of the temperature comparison circuit 20 is connected with an output end of the temperature acquisition circuit 10, the temperature comparison circuit 20 is used for comparing the temperature acquisition signal with the reference temperature signal, outputting a first trigger signal when the temperature acquisition signal is greater than the reference temperature signal, and outputting a second trigger signal when the temperature acquisition signal is less than the reference temperature signal;
the single chip microcomputer 30 is connected with the temperature comparison circuit 20, and the single chip microcomputer 30 is used for outputting an acceleration control signal when receiving a first trigger signal and outputting a deceleration control signal when receiving a second trigger signal;
the controlled end of the motor driving circuit 40 is connected with the output end of the single chip microcomputer 30, the output end of the motor driving circuit 40 is connected with the motor, the motor driving circuit 40 is used for driving the motor to accelerate when receiving the acceleration signal, and the motor driving circuit 40 is also used for driving the motor to decelerate when receiving the deceleration signal.
In this embodiment, the temperature acquisition circuit 10 is configured to detect the temperature of the surrounding environment and output a corresponding temperature acquisition signal to the temperature comparison circuit 20. The temperature comparison circuit 20 outputs a corresponding trigger signal by comparing the magnitude relationship between the reference temperature signal and the temperature acquisition signal, so as to trigger the single chip microcomputer 30 to operate. When the temperature acquisition signal output by the temperature acquisition circuit 10 is greater than the reference temperature signal, the ambient temperature is greater than the preset temperature, the ambient temperature is in a high temperature state, and a first trigger signal is output; when the temperature acquisition signal output by the temperature acquisition circuit 10 is smaller than the reference temperature signal, the ambient temperature is lower than the preset temperature, the ambient temperature is in a low temperature state, and a second trigger signal is output; when the temperature acquisition signal output by the temperature acquisition circuit 10 is equal to the reference temperature signal, the temperature comparison circuit 20 does not output the trigger signal.
The single chip microcomputer 30 outputs a corresponding acceleration/deceleration control signal according to the received trigger signal, and outputs the acceleration/deceleration control signal to the motor driving circuit 40 to drive acceleration/deceleration of the motor. When the single chip microcomputer 30 receives the first trigger signal, the single chip microcomputer 30 outputs an acceleration control signal to the motor driving circuit 40, and the motor driving circuit 40 drives the motor to accelerate; when the single chip microcomputer 30 receives the second trigger signal, the single chip microcomputer 30 outputs a deceleration control signal to the motor driving circuit 40, and the motor driving circuit 40 drives the motor to decelerate; when the single chip microcomputer 30 does not receive the trigger signal, the rotation speed of the motor driven by the motor driving circuit 40 is unchanged.
Specifically, when the temperature acquired by the temperature acquisition circuit 10 is higher than the reference temperature, the single chip microcomputer 30 controls the motor driving circuit 40 to drive the motor to accelerate; when the temperature acquired by the temperature acquisition circuit 10 is lower than the reference temperature, the singlechip 30 controls the motor drive circuit 40 to drive the motor to decelerate; when the temperature collected by the temperature collecting circuit 10 is equal to the reference temperature, the motor driving circuit 40 keeps the rotating speed of the driving motor unchanged.
When the temperature signal acquired by the temperature acquisition circuit 10 is inconsistent with the reference temperature, the single chip microcomputer 30 outputs a corresponding control signal to control the rotation speed of the motor and change the temperature of the surrounding environment until the temperature of the surrounding environment is consistent with the reference temperature. When the temperature signal acquired by the temperature acquisition circuit 10 is higher than the reference temperature, the single chip microcomputer 30 controls the motor driving circuit 40 to drive the motor to accelerate, and the rotating speed of the cooling fan is increased, so that the temperature of the surrounding environment is reduced; when the temperature acquired by the temperature acquisition circuit 10 is lower than the reference temperature, the single chip microcomputer 30 controls the motor driving circuit 40 to drive the motor to decelerate, and the rotating speed of the cooling fan is reduced, so that the temperature of the surrounding environment is increased. The motor controller in this embodiment adjusts the temperature of the surrounding environment in real time by controlling the rotation of the cooling fan and maintains the temperature at the reference temperature, so that the cooling fan has higher flexibility and better cooling effect.
The utility model discloses a set up temperature acquisition circuit 10, temperature comparison circuit 20, singlechip 30 and motor drive circuit 40. The temperature acquisition circuit 10 is used for detecting the temperature of the surrounding environment and outputting a corresponding temperature acquisition signal; the first input end of the temperature comparison circuit 20 is used for accessing a reference temperature signal, the second input end is connected with the output end of the temperature acquisition circuit 10, and is used for comparing the temperature acquisition signal with the reference temperature signal, outputting a first trigger signal when the temperature acquisition signal is greater than the reference temperature signal, and outputting a second trigger signal when the temperature acquisition signal is less than the reference temperature signal; the single chip microcomputer 30 is used for outputting an acceleration control signal when receiving the first trigger signal and outputting a deceleration control signal when receiving the second trigger signal; the motor drive circuit 40 drives the motor to accelerate upon receiving the acceleration signal, and the motor drive circuit 40 drives the motor to decelerate upon receiving the deceleration signal. When the temperature signal acquired by the temperature acquisition circuit 10 is higher than the reference temperature, the singlechip 30 controls the motor drive circuit 40 to drive the motor to accelerate, and the rotating speed of the cooling fan is increased, so that the temperature of the surrounding environment is reduced; when the temperature acquired by the temperature acquisition circuit 10 is lower than the reference temperature, the single chip microcomputer 30 controls the motor driving circuit 40 to drive the motor to decelerate, and the rotating speed of the cooling fan is reduced, so that the temperature of the surrounding environment is increased. The motor controller in this embodiment adjusts the temperature of the surrounding environment in real time by controlling the rotation of the cooling fan and maintains the temperature at the reference temperature, so that the cooling fan has higher flexibility and better cooling effect.
Referring to fig. 2, the temperature acquisition circuit 10 includes a first resistor R1, a second resistor R2, a thermistor RT and a first capacitor C1, the first end of the first resistor R1 is connected to the power source, the second end of the first resistor R1 is connected to the first end of the second resistor R2, the first end of the first capacitor C1 is connected to the first end of the thermistor RT, the second end of the first capacitor C1 is connected to the second end of the thermistor RT, and the second end of the second resistor R2 is connected to the second input terminal of the temperature comparison circuit 20.
In the present embodiment, the temperature acquisition circuit 10 is configured to acquire the temperature of the surrounding environment and output a corresponding temperature acquisition signal.
The first resistor R1 and the thermistor RT divide the voltage source VDD, and the larger the resistance value of the thermistor RT is, the larger the output voltage of Vout1 is. The temperature acquisition signal is specifically a voltage signal output by Vout1, and the larger the temperature of the surrounding environment is, the smaller the resistance value of the thermistor RT is, and the larger the voltage output by Vout1 is.
Referring to fig. 3, in an embodiment, the motor controller further includes a temperature compensation circuit 21, an input end of the temperature compensation circuit 21 is connected to an output end of the temperature acquisition circuit 10, an output end of the temperature compensation circuit 21 is connected to a second input end of the temperature comparison circuit 20, and the temperature compensation circuit 21 is configured to perform compensation processing on the temperature acquisition signal and output the temperature acquisition signal to the temperature comparison circuit 20.
In the present embodiment, the thermistor RT is a negative temperature coefficient electronic element, and the resistance increases with the increase in temperature. The linear expansion coefficients of the strain wire materials in the resistor are different, so that the strain wires generate additional deformation to cause resistance change. Therefore, the temperature acquisition signal detected by the resistance change is not accurate, and the temperature compensation circuit 21 needs to be additionally provided to improve the accuracy of the temperature acquisition signal.
Referring to fig. 3, in an embodiment, the temperature compensation circuit 21 includes a first amplifier A1, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4, a first end of the third resistor R3 is grounded, a second end of the third resistor R3 is connected to the non-inverting input terminal of the first amplifier A1, a first end of the fourth resistor R4 is interconnected with a first end of the second capacitor C2 and the output terminal of the temperature acquisition circuit 10, a second end of the second capacitor C2 is connected to a first end of the fifth resistor R5, a second end of the fourth resistor R4, a second end of the fifth resistor R5, a first end of the sixth resistor R6, and a first end of the third capacitor C3 are connected to the inverting input terminal of the first amplifier A1, a second end of the sixth resistor R6 is interconnected with a first end of the fourth capacitor C4, and a second end of the third capacitor C3 and the fourth capacitor C4 are interconnected with the second end of the output terminal of the amplifier a second end of the fourth capacitor A1.
In the present embodiment, the first amplifier A1 forms a proportional-derivative-integral circuit with a resistor and a capacitor for adjusting the temperature to satisfy the effect of temperature compensation.
A circuit for integrating the error is added to a normal proportional control circuit, and the temperature can be reached to a predetermined temperature in the shortest time. However, the temperature of the temperature sensor is enlarged along with the increase of time, the mask response is slow, and in order to reduce errors and improve the speed, a differentiating element is added in the circuit to form a proportional-derivative-integral circuit, so that the temperature sensor can quickly respond to the rapidly changing temperature and has good adjusting effect.
Referring to fig. 4, in an embodiment, the temperature comparison circuit 20 includes a second amplifier A2, a seventh resistor R7, an eighth resistor R8, and a ninth resistor R9, the seventh resistor R7 is serially connected between the non-inverting input terminal of the second amplifier A2 and the output terminal of the temperature acquisition circuit 10, a first end of the eighth resistor R8 is used for receiving a reference temperature signal, a second end of the eighth resistor R8 is connected to the inverting input terminal of the second amplifier A2, the ninth resistor R9 is serially connected between the inverting input terminal of the second amplifier A2 and the output terminal of the second amplifier A2, and the output terminal of the second amplifier A2 is connected to the single chip microcomputer 30.
In this embodiment, the reference voltage Vref is a reference temperature signal, i.e., the reference voltage Vref is compared with the voltage of the temperature acquisition signal. In addition, the reference voltage Vref can be obtained by converting the power supply voltage through a voltage stabilization chip, which is partially the prior art.
In one embodiment, the motor drive circuit 40 includes:
the input end of the driving amplification circuit is connected with the single chip microcomputer 30, and the driving amplification circuit is used for amplifying the acceleration control signal/the deceleration control signal;
the input end of the bridge arm circuit is connected with the output end of the driving amplification circuit, the output end of the bridge arm circuit is connected with the motor, and the bridge arm circuit is used for driving the motor to accelerate/decelerate according to the received acceleration control signal/deceleration control signal.
In the present embodiment, the driving amplifying circuit is used for amplifying the power of the output signal of the single chip microcomputer 30 to meet the driving requirement. The bridge arm circuit drive can reduce current fluctuation and torque pulsation, so that the motor outputs larger torque.
Referring to fig. 5, in an embodiment, the bridge arm circuit includes a first MOS transistor Q1, a second MOS transistor Q2, a third MOS transistor Q3, a fourth MOS transistor Q4, and gates of the first MOS transistor Q1, the second MOS transistor Q2, the third MOS transistor Q3, and the fourth MOS transistor Q4 are all connected to an output end of the controller, a source of the first MOS transistor Q1 and a drain of the second MOS transistor Q2 are connected to a first end of the motor, a drain of the first MOS transistor Q1 and a drain of the third MOS transistor Q3 are connected to a dc power supply, a source of the second MOS transistor Q2 and a source of the fourth MOS transistor Q4 are grounded, and a source of the third MOS transistor Q3 and a drain of the fourth MOS transistor Q4 are connected to a second end of the motor.
In the present embodiment, if the motor is to be driven; opening a first MOS transistor Q1 and a fourth MOS transistor Q4; closing the second MOS transistor Q2 and the third MOS transistor Q3; assuming that the motor 200 rotates forward, the current sequentially passes through the first MOS transistor Q1, the motor 200, and the fourth MOS transistor Q4; when the state of the four switching elements is reversed, the first MOS tube Q1 and the fourth MOS tube Q4 are closed; opening a second MOS transistor Q2 and a third MOS transistor Q3; at this time, the motor 200 rotates reversely, and the current passes through the second MOS transistor Q2, the motor 200, and the third MOS transistor Q3 in sequence. If the speed of the direct current motor is to be regulated, the second MOS tube Q2 and the third MOS tube Q3 can be closed, the first MOS tube Q1 and the fourth MOS tube Q4 are opened, and the PWM waveform with 50% duty ratio is input, so that the effect of reducing the rotating speed is achieved, and if the rotating speed needs to be increased, the duty ratio of the input PWM is set to be 100%.
Referring to fig. 6, in an embodiment, the driving amplifying circuit includes a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, and a first transistor Q11, a first end of the tenth resistor R10 is connected to a first end of the eleventh resistor R11, and is an input end of the driving amplifying circuit, a second end of the tenth resistor R10 is connected to a base of the first transistor Q11, an emitter of the first transistor Q11 and a second end of the eleventh resistor R11 are grounded, a collector of the first transistor Q11 is connected to a first end of the twelfth resistor R12, and is an output end of the driving amplifying circuit, and a second end of the twelfth resistor R12 is connected to a power supply end.
In this embodiment, the driving amplifier circuit adopts a common collector amplifier circuit to amplify the output power of the single chip microcomputer 30, and the output terminal Vout3 is connected to the collector of the first transistor Q11.
The utility model provides an electric device.
Referring to fig. 1 to 6, the electric device includes the motor controller as described above.
The detailed structure of the motor controller can refer to the above embodiments, and is not described herein; it can be understood, because the utility model discloses used above-mentioned motor controller among the electric actuator, consequently, the utility model discloses electric actuator's embodiment includes all technical scheme of the whole embodiments of above-mentioned motor controller, and the technical effect who reaches is also identical, and is not repeated here.
Referring to fig. 7, in an embodiment, the electric device includes the motor controller and the heat dissipation fan as described above, the motor controller is configured to control a rotation speed of the heat dissipation fan;
the heat dissipation fan comprises a first stator 2, fan blades 3 and a second stator 4;
the fan blade 3 is in a right trapezoid shape, the fan blade 3 is connected between the first fixing piece 2 and the second fixing piece 4, one longer bottom edge of the fan blade 3 is connected with the first fixing piece 2, and one shorter bottom edge of the fan blade 3 is connected with the second fixing piece 4.
In the present embodiment, the motor controller is used to control the rotational speed of the rotating shaft 1 to control the rotational speed of the heat dissipation fan. The fan blade 3 is fixed between the first stator 2 and the second stator 4.
The arc-shaped fan blades 3 are not large in wind power, so that the heat dissipation effect is poor, the plastic blades are close to a heat source, particularly, the fan blade chassis is directly sleeved on the rotating shaft 1, the rotating shaft 1 can conduct heat generated on the rotor to the fan blade chassis, the thermal expansion coefficient of the plastic material is larger than that of the metal rotating shaft 1, the fan blades lose dynamic balance due to expansion deformation at a joint after the temperature rises, vibration is aggravated, and noise is increased.
The fan blade 3 in this embodiment is connected with the second fixing plate 4 through the first fixing plate 2, and is not directly connected with the rotating shaft 1, and the first fixing plate 2, the second fixing plate 4 and the fan blade 3 are made of metal materials, so that the phenomenon that the fan blade loses dynamic balance due to expansion deformation is avoided. The trapezoidal fan blade 3 can generate large output air volume and air pressure under low fan rotating speed, and meanwhile, too much wind noise can not be generated.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. A motor controller for controlling a rotational speed of a heat dissipation fan, the motor controller comprising:
the temperature acquisition circuit is used for detecting the temperature of the surrounding environment and outputting a corresponding temperature acquisition signal;
the temperature comparison circuit is used for comparing the temperature acquisition signal with the reference temperature signal, outputting a first trigger signal when the temperature acquisition signal is greater than the reference temperature signal, and outputting a second trigger signal when the temperature acquisition signal is less than the reference temperature signal;
the single chip microcomputer is connected with the temperature comparison circuit and used for outputting an acceleration control signal when receiving a first trigger signal and outputting a deceleration control signal when receiving a second trigger signal;
the motor driving circuit, motor driving circuit's controlled end with the output of singlechip is connected, motor driving circuit's output is connected with the motor, motor driving circuit is used for receiving drive when accelerating the control signal the motor accelerates, motor driving circuit still is used for receiving drive when decelerating the control signal the motor slows down.
2. The motor controller according to claim 1, wherein said temperature acquisition circuit comprises a first resistor, a second resistor, a thermistor and a first capacitor, a first end of said first resistor is connected to a power supply terminal, a second end of said first resistor is interconnected with a first end of said second resistor, a first end of said first capacitor and a first end of said thermistor, a second end of said first capacitor and a second end of said thermistor are grounded, and a second end of said second resistor is connected to a second input terminal of said temperature comparison circuit.
3. The motor controller according to claim 1, further comprising a temperature compensation circuit, wherein an input terminal of the temperature compensation circuit is connected to an output terminal of the temperature acquisition circuit, an output terminal of the temperature compensation circuit is connected to a second input terminal of the temperature comparison circuit, and the temperature compensation circuit is configured to perform compensation processing on the temperature acquisition signal and output the temperature acquisition signal to the temperature comparison circuit.
4. The motor controller of claim 3 wherein said temperature compensation circuit comprises a first amplifier, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a second capacitor, a third capacitor and a fourth capacitor, wherein a first terminal of said third resistor is connected to ground, a second terminal of said third resistor is connected to a non-inverting input of said first amplifier, a first terminal of said fourth resistor is interconnected to a first terminal of said second capacitor and an output of said temperature acquisition circuit, a second terminal of said second capacitor is connected to a first terminal of said fifth resistor, a second terminal of said fourth resistor, a second terminal of said fifth resistor, a first terminal of said sixth resistor and a first terminal of said third capacitor are interconnected to an inverting input of said first amplifier, a second terminal of said sixth resistor is connected to a first terminal of said fourth capacitor, and a second terminal of said third capacitor and a second terminal of said fourth capacitor are interconnected to an output of said first amplifier.
5. The motor controller according to claim 1, wherein the temperature comparison circuit comprises a second amplifier, a seventh resistor, an eighth resistor, and a ninth resistor, the seventh resistor is serially connected between a non-inverting input terminal of the second amplifier and an output terminal of the temperature acquisition circuit, a first terminal of the eighth resistor is used for receiving a reference temperature signal, a second terminal of the eighth resistor is connected to an inverting input terminal of the second amplifier, the ninth resistor is serially connected between an inverting input terminal of the second amplifier and the output terminal of the second amplifier, and the output terminal of the second amplifier is connected to the single chip microcomputer.
6. The motor controller of claim 1, wherein the motor drive circuit comprises:
the input end of the driving amplification circuit is connected with the single chip microcomputer, and the driving amplification circuit is used for amplifying the acceleration control signal/the deceleration control signal;
the input end of the bridge arm circuit is connected with the output end of the driving amplification circuit, the output end of the bridge arm circuit is connected with the motor, and the bridge arm circuit is used for driving the motor to accelerate/decelerate according to the received acceleration control signal/deceleration control signal.
7. The motor controller according to claim 6, wherein the bridge arm circuit includes a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, and gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, and the fourth MOS transistor are all connected to an output terminal of the controller, a source of the first MOS transistor and a drain of the second MOS transistor are connected to the first end of the motor, a drain of the first MOS transistor and a drain of the third MOS transistor are connected to a dc power supply, a source of the second MOS transistor and a source of the fourth MOS transistor are grounded, and a source of the third MOS transistor and a drain of the fourth MOS transistor are connected to the second end of the motor.
8. The motor controller according to claim 6, wherein the driving amplifying circuit comprises a tenth resistor, an eleventh resistor, a twelfth resistor and a first triode, a first terminal of the tenth resistor is connected to a first terminal of the eleventh resistor, which is an input terminal of the driving amplifying circuit, a second terminal of the tenth resistor is connected to a base of the first triode, an emitter of the first triode and a second terminal of the eleventh resistor are grounded, a collector of the first triode is connected to a first terminal of the twelfth resistor, which is an output terminal of the driving amplifying circuit, and a second terminal of the twelfth resistor is connected to a power supply terminal.
9. An electric device comprising the motor controller according to any one of claims 1 to 8 and a heat radiation fan, wherein the motor controller is configured to control a rotation speed of the heat radiation fan.
10. The electromotive device according to claim 9, wherein the heat dissipation fan includes a first stator, a fan blade, and a second stator;
the fan blade is in a right trapezoid shape, the fan blade is connected between the first fixing piece and the second fixing piece, one longer bottom edge of the fan blade is connected with the first fixing piece, and one shorter bottom edge of the fan blade is connected with the second fixing piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222295881.7U CN218633616U (en) | 2022-08-30 | 2022-08-30 | Motor controller and electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222295881.7U CN218633616U (en) | 2022-08-30 | 2022-08-30 | Motor controller and electric device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218633616U true CN218633616U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222295881.7U Active CN218633616U (en) | 2022-08-30 | 2022-08-30 | Motor controller and electric device |
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| Country | Link |
|---|---|
| CN (1) | CN218633616U (en) |
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2022
- 2022-08-30 CN CN202222295881.7U patent/CN218633616U/en active Active
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