CN220548900U - Suspension solenoid valve control circuit, suspension control system and vehicle - Google Patents
Suspension solenoid valve control circuit, suspension control system and vehicle Download PDFInfo
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- CN220548900U CN220548900U CN202322169370.5U CN202322169370U CN220548900U CN 220548900 U CN220548900 U CN 220548900U CN 202322169370 U CN202322169370 U CN 202322169370U CN 220548900 U CN220548900 U CN 220548900U
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- 239000000725 suspension Substances 0.000 title claims abstract description 141
- 238000001514 detection method Methods 0.000 claims abstract description 66
- 238000001914 filtration Methods 0.000 claims description 18
- 239000003990 capacitor Substances 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
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Abstract
The present disclosure relates to a suspension solenoid valve control circuit, a suspension control system, and a vehicle, the suspension solenoid valve control circuit including: the device comprises a power supply module, a detection module and a feedback module; the detection module is electrically connected between the power supply module and the suspension electromagnetic valve; the detection module is used for detecting the driving current of the suspension electromagnetic valve; the feedback module is electrically connected with the detection module and the power supply module respectively; the feedback module outputs a feedback signal to the power supply module based on a comparison result of the driving current and the target current of the suspension solenoid valve; the power module adjusts a drive current of the suspension solenoid to the target current based on the feedback signal. The suspension solenoid valve control circuit provided by the disclosure not only can adjust the output driving current according to the feedback signal to enable the driving current to meet the requirement of target current, but also can improve the EMC problem, and has lower circuit structure cost.
Description
Technical Field
The disclosure relates to the technical field of automobiles, in particular to a suspension electromagnetic valve control circuit, a suspension control system and a vehicle.
Background
Current vehicles are often equipped with intelligent air suspension systems in order to provide a more comfortable ride experience for the user. The air suspension system adjusts the supporting force of the air suspension through current, for example, the air suspension is required to be hardened, high current is output, the air suspension is required to be softened, and low current is output.
When the supporting force of the air suspension is regulated by current, the opening degree of an electromagnetic valve of the suspension is controlled mainly by current, and a pre-driving control MOS (Metal Oxide Semiconductor Field Effect Transistor, metal oxide semiconductor type field effect transistor) tube is used for opening or closing in the prior art; the magnitude of the current passing through the MOS tube is controlled in a PWM (Pulse Width Modulation ) mode, so that the suspension solenoid valve is driven, but the control mode requires PWM high-frequency driving, the problem of EMC (Electromagnetic Compatibility ) in a system is serious due to high frequency, and the structure cost is high.
Disclosure of Invention
In order to solve the technical problems, the present disclosure provides a suspension solenoid valve control circuit, a suspension control system and a vehicle.
In a first aspect, the present disclosure provides a suspension solenoid control circuit comprising: the device comprises a power supply module, a detection module and a feedback module;
the detection module is electrically connected between the power supply module and the suspension electromagnetic valve; the detection module is used for detecting the driving current of the suspension electromagnetic valve;
the feedback module is electrically connected with the detection module and the power supply module respectively; the feedback module outputs a feedback signal to the power supply module based on a comparison result of the driving current and the target current of the suspension solenoid valve; the power module adjusts a drive current of the suspension solenoid to the target current based on the feedback signal.
In some embodiments, the detection module comprises: a detection resistor and an in-phase amplifier;
the detection resistor is connected in series between the power supply module and the suspension electromagnetic valve; the first end of the detection resistor is also electrically connected with the first input end of the in-phase amplifier; the second end of the detection resistor is also electrically connected with the second input end of the in-phase amplifier; and the output end of the in-phase amplifier is electrically connected with the feedback module.
In some embodiments, the feedback module comprises: a comparator;
the first input end of the comparator is electrically connected with the output end of the detection module; the second input end of the comparator is used for accessing the target voltage; the output end of the comparator is electrically connected with the power supply module;
the target voltage is a voltage corresponding to the target current.
In some embodiments, the feedback module further comprises: a first resistor, a second resistor, and a third resistor;
the first end of the first resistor is electrically connected with the output end of the power supply module; the second end of the first resistor is electrically connected with the first end of the second resistor, the first end of the third resistor and the feedback end of the power supply module respectively; the second end of the second resistor is grounded; the second end of the third resistor is electrically connected with the output end of the comparator.
In some embodiments, further comprising: a filtering module;
the filtering module is electrically connected between the detecting module and the feedback module.
In some embodiments, the filtering module comprises: a filter resistor and a filter capacitor;
the filter resistor is connected in series between the detection module and the feedback module; the first end of the filter capacitor is connected between the filter resistor and the feedback module; the second end of the filter capacitor is grounded.
In some embodiments, further comprising: a reverse protection module;
the reverse protection module is connected between the power module and the suspension solenoid valve and is used for being cut off when the driving current of the suspension solenoid valve is higher than the output current of the power module.
In some embodiments, the reverse protection module includes a reverse diode.
In a second aspect, the present disclosure also provides a suspension control system, as set forth in any one of the first aspects.
In a third aspect, the present disclosure also provides a vehicle comprising a suspension control system as provided in the second aspect.
Compared with the prior art, the technical scheme provided by the disclosure has the following advantages:
the suspension solenoid valve control circuit provided by the embodiment of the disclosure comprises: the device comprises a power supply module, a detection module and a feedback module; the detection module is electrically connected between the power supply module and the suspension electromagnetic valve; the detection module is used for detecting the driving current of the suspension solenoid valve; the feedback module is respectively and electrically connected with the detection module and the power supply module; the feedback module outputs a feedback signal to the power supply module based on a comparison result of the driving current and the target current of the suspension solenoid valve; the power module adjusts a drive current of the suspension solenoid to a target current based on the feedback signal. In the embodiment of the disclosure, the driving current of the suspension solenoid valve is detected by the detection module without using the mode of combining the MOS tube with PWM control, the obtained driving current is compared with the target current, a feedback signal is output to the power module according to the comparison result, and the output driving current is regulated according to the feedback signal, so that the driving current provided for the suspension solenoid valve meets the requirement of the target current. The suspension solenoid valve control circuit provided by the embodiment of the disclosure not only can adjust the output driving current according to the feedback signal to enable the driving current to meet the requirement of target current, but also can improve the EMC problem, and has lower circuit structure cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a control circuit for a suspension solenoid valve according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a control circuit for a suspension solenoid valve according to another embodiment of the disclosure;
FIG. 3 is a schematic diagram of a control circuit for a suspension solenoid valve according to yet another embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a further suspension solenoid control circuit provided in accordance with an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a further suspension solenoid control circuit provided in accordance with an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a further suspension solenoid control circuit provided in accordance with an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of a further suspension solenoid control circuit provided in accordance with an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of yet another suspension solenoid control circuit provided in an embodiment of the present disclosure.
Wherein, the reference numerals are as follows: 10. a power module; 20. a detection module; 21. detecting a resistor; 22. an in-phase amplifier; 30. a feedback module; 31. a comparator; 40. a filtering module; 41. a filter resistor; 42. a filter capacitor; 50. a reverse protection module; r1, a first resistor; r2, a second resistor; r3, a third resistor.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.
An embodiment of the present disclosure provides a suspension solenoid valve control circuit, and fig. 1 is a schematic structural diagram of the suspension solenoid valve control circuit according to the embodiment of the present disclosure, as shown in fig. 1, the suspension solenoid valve control circuit includes: a power module 10, a detection module 20 and a feedback module 30.
The detection module 20 is electrically connected between the power module 10 and the suspension solenoid valve; the detection module 20 is used for detecting the driving current of the suspension solenoid valve.
The feedback module 30 is electrically connected with the detection module 20 and the power module 10 respectively; the feedback module 30 outputs a feedback signal to the power module 10 based on a comparison result of the driving current of the suspension solenoid valve and the target current; the power module 10 adjusts the driving current of the suspension solenoid valve to a target current based on the feedback signal.
In the embodiment of the disclosure, the suspension solenoid valve control circuit comprises a power module 10, the power module 10 provides driving current for the suspension solenoid valve so as to control the suspension solenoid valve to be opened or closed, and in the air suspension system, the suspension solenoid valve can control the flow of air, and the air channel is opened or closed according to the input of the driving current so as to adjust the air inlet and outlet, thereby realizing the adjustment of the height and hardness of the suspension system. The detection module 20 is electrically connected between the power module 10 and the suspension solenoid valve, detects the driving current of the suspension solenoid valve in real time, the detection module 20 is further electrically connected with the feedback module 30, the detected driving current is transmitted to the feedback module 30, the feedback module 30 compares the received driving current with a target current, wherein the target current is a current value which needs to be reached by the suspension solenoid valve, a feedback signal is output to the power module 10 which is electrically connected with the feedback module 30 based on a comparison result of the driving current of the suspension solenoid valve and the target current, the feedback module 30 is electrically connected with the power module, and the power module can adjust the driving current of the suspension solenoid valve according to the received feedback signal until the target current is reached.
For example, the detection module 20 detects that the driving current of the suspension solenoid valve is smaller than the target current, which indicates that the current driving current of the suspension solenoid valve is lower and does not meet the actual working requirement, and the feedback module 30 outputs a feedback signal after comparing the driving current with the target current, and the power module 10 adjusts the output voltage under the action of the feedback signal to increase the driving current and adjust the driving current of the suspension solenoid valve to the target current. If the detected driving current is greater than the target current, it indicates that the driving current of the current suspension solenoid valve is higher, and the actual working requirement is not met, and the feedback module 30 outputs a feedback signal after comparing the driving current with the target current, and the power module 10 adjusts the output voltage under the action of the feedback signal so as to reduce the magnitude of the driving current and adjust the driving current of the suspension solenoid valve to the target current.
Compared with the prior art that an MOS tube is needed to be used for adjusting the driving current and the driving current is controlled by PWM, the suspension electromagnetic valve control circuit provided by the embodiment of the disclosure does not need to use the MOS tube to combine with the PWM to control the driving current, and when the driving current is controlled by PWM, the situation that EMC problem is generated in high-frequency driving is improved. In the embodiment of the disclosure, the detection module detects the driving current of the suspension solenoid valve, compares the obtained driving current with the target current, outputs a feedback signal to the power module according to the comparison result, and adjusts the output driving current according to the feedback signal, so that the driving current provided for the suspension solenoid valve meets the requirement of the target current. The suspension solenoid valve control circuit provided by the embodiment of the disclosure not only can adjust the output driving current according to the feedback signal to enable the driving current to meet the requirement of target current, but also can improve the EMC problem, and has lower circuit structure cost.
In some embodiments, fig. 2 is a schematic structural diagram of a suspension solenoid valve control circuit according to another embodiment of the disclosure, and as shown in fig. 2, the detection module 20 includes: a sense resistor 21 and an in-phase amplifier 22.
The detection resistor 21 is connected in series between the power module 10 and the suspension solenoid valve; the first end of the detection resistor 21 is also electrically connected with the first input end of the in-phase amplifier 22; the second end of the detection resistor 21 is also electrically connected with the second input end of the in-phase amplifier 22; the output of the in-phase amplifier 22 is electrically connected to a feedback module 30.
The detection resistor 21 is connected in series between the power module 10 and the suspension solenoid valve, a first end of the detection resistor 21 is electrically connected with the output end of the power module 10 and a first input end of the in-phase amplifier 22 respectively, and a second end of the detection resistor 21 is electrically connected with the suspension solenoid valve and a second input end of the in-phase amplifier 22 respectively. The driving current of the current suspension solenoid valve can be obtained by acquiring the voltages at two ends of the detection resistor 21 and combining the resistance value of the detection resistor 21. Since the obtained voltage values at the two ends of the detection resistor 21 may be smaller, the voltage values are connected to the in-phase amplifier 22, the detection voltage is amplified to a required range by the in-phase amplifier 22, and the detection voltage is output to the feedback module 30 from the output end of the in-phase amplifier 22.
It should be noted that, the structure of the detection resistor and the in-phase amplifier may be replaced by other current detection circuits, for example, a signal acquisition chip or a circuit structure formed by other various discrete components, which is not limited in this embodiment of the disclosure.
In some embodiments, fig. 3 is a schematic structural diagram of a suspension solenoid valve control circuit according to another embodiment of the disclosure, and as shown in fig. 3, a feedback module 30 includes: a comparator 31.
A first input of the comparator 31 is electrically connected to an output of the detection module 20; a second input terminal of the comparator 31 is used for accessing a target voltage Vref; the output of the comparator 31 is electrically connected to the power module 10.
The target voltage is a voltage corresponding to the target current.
In the embodiment of the disclosure, the feedback module 30 includes a comparator 31, a first input end of the comparator 31 is electrically connected to an output end of the detection module 20, receives a detection voltage transmitted by the detection module 20, the detection voltage is a voltage corresponding to a driving current of the suspension solenoid valve, a second input end of the comparator 31 is connected to a target voltage Vref, where the target voltage Vref is a voltage corresponding to the target current, and an output end of the comparator 31 is electrically connected to the power module 10, and is used for transmitting a feedback signal to the power module 10. For example, the comparator 31 compares the detected voltage with the target voltage Vref, for example, when the detected voltage is consistent with the target voltage Vref, which indicates that the driving current is the same as the target current, i.e. the current driving current of the suspension solenoid valve is the required current, and the comparator 31 outputs a feedback signal to the power module 10 without adjustment, so that the output voltage of the power module 10 is kept unchanged; if the detected voltage is greater than the target voltage Vref, it indicates that the driving current is greater than the target current, i.e. the current driving current of the suspension solenoid valve is too large, and needs to be reduced, the comparator 31 outputs a feedback signal to the power module 10, so that the output voltage of the power module 10 is reduced, and the driving current of the suspension solenoid valve is reduced; if the check voltage is smaller than the target voltage Vref, it indicates that the driving current is smaller than the target current, that is, the current driving current of the suspension solenoid valve is smaller, and needs to be adjusted to be larger, the comparator 31 outputs a feedback signal to the power module 10, so that the output voltage of the power module 10 is increased, and the driving current of the suspension solenoid valve is improved.
Since the target voltage is the voltage corresponding to the target current, when the driving current of the suspension solenoid valve needs to be changed, the target current can be adjusted, and when the target current is changed, the corresponding target voltage can be correspondingly changed. Therefore, only the target voltage is required to be regulated, and the feedback signal is output to the power module by comparing the detection voltage with the target voltage, so that the driving current of the suspension solenoid valve can be regulated to the target current by the power module.
In some embodiments, fig. 4 is a schematic structural diagram of a suspension solenoid valve control circuit according to another embodiment of the disclosure, and as shown in fig. 4, the feedback module further includes: a first resistor R1, a second resistor R2 and a third resistor R3.
A first end of the first resistor R1 is electrically connected with the output end of the power module 10; the second end of the first resistor R1 is electrically connected with the first end of the second resistor R2, the first end of the third resistor R3 and the feedback end of the power module 10 respectively; the second end of the second resistor R2 is grounded; the second terminal of the third resistor R3 is electrically connected to the output terminal of the comparator 31.
In the embodiment of the present disclosure, the feedback module further includes a first resistor R1, a second resistor R2, and a third resistor R3, through which voltage is divided, and a feedback signal fed back to the power module 10 is controlled, so that the power module can adjust the driving current of the suspension solenoid valve to a target current. For example, the driving voltage is V, the detecting voltage V1, the output voltage of the comparator is V2, and the feedback signal finally fed back to the input end of the power module is VFB, as shown in fig. 4, v= (VFB/r2+ (VFB-V2)/R3) × (r1+r2), wherein in the embodiment of the present disclosure, the comparator is disposed in the power module, and the feedback signal VFB fed back to the power module can be adjusted to a fixed range, so that the feedback signal VFB is kept stable. When the driving voltage corresponding to the driving current of the suspension solenoid valve detected by the detection module 20 is greater than the target voltage, it indicates that the driving current of the current suspension solenoid valve is excessively large, and thus, the feedback signal output from the comparator 31 becomes large, i.e., V2 becomes large, and according to the above formula, the driving voltage V may be reduced, so that the driving current of the suspension solenoid valve may be reduced. When the driving voltage corresponding to the driving current of the suspension solenoid valve detected by the detection module 20 is smaller than the target voltage, it indicates that the driving current of the current suspension solenoid valve is too small, and thus, the feedback signal output by the comparator 31 becomes small, i.e., V2 becomes small, and according to the above formula, the driving voltage V increases, so that the driving current of the suspension solenoid valve increases. When the driving current of the suspension solenoid valve does not meet the requirement, the power supply module can be used for adjusting the driving current of the suspension solenoid valve to the target current through the feedback module.
In some embodiments, fig. 5 is a schematic structural diagram of a suspension solenoid valve control circuit according to another embodiment of the disclosure, as shown in fig. 5, further including: a filtering module 40.
The filtering module 40 is electrically connected between the detecting module 20 and the feedback module 30.
The filtering module 40 is used for filtering ripple in the detection voltage transmitted by the detection module 20 in the circuit and high-frequency components in the detection voltage. The ripple wave is filtered, so that the alternating current component in the pulsating direct current voltage can be reduced as much as possible, the direct current component is reserved, the ripple wave coefficient of the output voltage is reduced, and the waveform is smoother. And the possibility of EMC problems generated by the circuit can be reduced by filtering high-frequency components.
In some embodiments, fig. 6 is a schematic structural diagram of a suspension solenoid valve control circuit according to another embodiment of the disclosure, and as shown in fig. 6, a filtering module 40 includes: a filter resistor 41 and a filter capacitor 42.
The filter resistor 41 is connected in series between the detection module 20 and the feedback module 30; a first end of the filter capacitor 42 is connected between the filter resistor 41 and the feedback module 30; the second terminal of the filter capacitor 42 is grounded.
Illustratively, the filtering module 40 may be composed of a discrete component filter resistor 41 and a filter capacitor 42 to form a low-pass filter, and detect components of the voltage with signal frequencies lower than the cut-off frequency of the low-pass filter, which can be transmitted to the input of the feedback module 30, while detect components of the voltage with signal frequencies higher than the cut-off frequency of the low-pass filter, which cannot be transmitted to the feedback module 30. Because the filter capacitor 42 is connected with the ac component, the ac component in the detected voltage is directly connected to the ground through the filter capacitor 42, and the filtering is completed.
It should be noted that, the specific circuit structure of the filtering module in the embodiment of the disclosure is not limited, and may be composed of a filtering resistor and a filtering capacitor as in the above embodiment, and other circuit elements or filtering chips may also be used.
In some embodiments, fig. 7 is a schematic structural diagram of a suspension solenoid valve control circuit according to another embodiment of the disclosure, as shown in fig. 7, further including: reverse protection module 50.
The reverse protection module 50 is connected between the power module 10 and the suspension solenoid valve for being turned off when the driving current of the suspension solenoid valve is higher than the output current of the power module.
The first end of the reverse protection module 50 is electrically connected with the power module 10, the second end of the reverse protection module 50 is electrically connected with the suspension solenoid valve, when the driving current of the suspension solenoid valve is higher than the output current of the power module, the current flows backward, the circuit is easy to be damaged, and components and parts are burnt out, so that in order to avoid the current flowing backward, when the driving current of the suspension solenoid valve is higher than the output current of the power module, the reverse protection module 50 can perform circuit protection in time, and the safety of the current is improved.
In some embodiments, the reverse protection module includes a reverse diode.
The reverse protection module may include an anti-reverse diode, and when the driving current of the suspension solenoid valve is higher than the output current of the power module, the current cannot flow backward to the current module through the anti-reverse diode, so as to realize reverse protection, prevent the current from flowing backward into the power input end, burn the switching circuit, and improve the safety of the switching circuit.
It should be noted that, the embodiment of the disclosure does not limit the specific current structure of the reverse protection module, and the reverse protection module may be implemented by using a reverse protection diode as in the above embodiment, or may be implemented by using other elements, and may be selected according to actual requirements.
The embodiment of the disclosure also provides a suspension control system, such as the suspension solenoid valve control circuit in any of the above embodiments.
The suspension control system is used for connecting the wheels and the vehicle body, plays a role in supporting and damping the vehicle body, and buffers impact force transmitted to the vehicle frame or the vehicle body by the uneven road surface to damp vibration caused by the impact force. The prior art generally uses a driving circuit to control the on-off time or the current of a suspension electromagnetic valve, so as to adjust the inflation and deflation of the air spring or adjust the damping force of a shock absorber, thereby achieving the effect of adjusting the rigidity and the damping of the suspension. The suspension control system provided by the embodiment of the disclosure includes the suspension solenoid valve control circuit according to any embodiment, and an exemplary embodiment is shown in fig. 8, where fig. 8 is a schematic structural diagram of another suspension solenoid valve control circuit provided by the disclosure, and a manner of outputting PWM signals to control current is not required to use a pre-driving control MOS tube, and the driving current of the suspension solenoid valve is detected and fed back to the current module to perform feedback adjustment, so that the driving current of the suspension solenoid valve is adjusted, and no high-frequency signal is generated, thereby improving EMC problems and reducing cost.
The embodiment of the disclosure also provides a vehicle, including the suspension control system according to any of the embodiments above. The present utility model has the same or corresponding advantageous effects as the suspension control system in the above-described embodiment, since it includes the suspension control system in the above-described embodiment. It should be noted that, the vehicle provided in the embodiment of the present utility model may further include other circuits, devices or systems for supporting the normal operation thereof, which is not limited in this embodiment.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A suspension solenoid valve control circuit, comprising: the device comprises a power supply module, a detection module and a feedback module;
the detection module is electrically connected between the power supply module and the suspension electromagnetic valve; the detection module is used for detecting the driving current of the suspension electromagnetic valve;
the feedback module is electrically connected with the detection module and the power supply module respectively; the feedback module outputs a feedback signal to the power supply module based on a comparison result of the driving current and the target current of the suspension solenoid valve; the power module adjusts a drive current of the suspension solenoid to the target current based on the feedback signal.
2. The suspension solenoid control circuit of claim 1, wherein the detection module comprises: a detection resistor and an in-phase amplifier;
the detection resistor is connected in series between the power supply module and the suspension electromagnetic valve; the first end of the detection resistor is also electrically connected with the first input end of the in-phase amplifier; the second end of the detection resistor is also electrically connected with the second input end of the in-phase amplifier; and the output end of the in-phase amplifier is electrically connected with the feedback module.
3. The suspension solenoid control circuit of claim 1, wherein the feedback module comprises: a comparator;
the first input end of the comparator is electrically connected with the output end of the detection module; the second input end of the comparator is used for accessing the target voltage; the output end of the comparator is electrically connected with the power supply module;
the target voltage is a voltage corresponding to the target current.
4. The suspension solenoid control circuit of claim 3, wherein the feedback module further comprises: a first resistor, a second resistor, and a third resistor;
the first end of the first resistor is electrically connected with the output end of the power supply module; the second end of the first resistor is electrically connected with the first end of the second resistor, the first end of the third resistor and the feedback end of the power supply module respectively; the second end of the second resistor is grounded; the second end of the third resistor is electrically connected with the output end of the comparator.
5. The suspension solenoid valve control circuit of claim 1, further comprising: a filtering module;
the filtering module is electrically connected between the detecting module and the feedback module.
6. The suspension solenoid control circuit of claim 5, wherein the filter module comprises: a filter resistor and a filter capacitor;
the filter resistor is connected in series between the detection module and the feedback module; the first end of the filter capacitor is connected between the filter resistor and the feedback module; the second end of the filter capacitor is grounded.
7. The suspension solenoid valve control circuit of claim 1, further comprising: a reverse protection module;
the reverse protection module is connected between the power module and the suspension solenoid valve and is used for being cut off when the driving current of the suspension solenoid valve is higher than the output current of the power module.
8. The suspension solenoid control circuit of claim 7, wherein the reverse protection module comprises an anti-reverse diode.
9. A suspension control system, characterized by a suspension solenoid valve control circuit according to any one of claims 1 to 8.
10. A vehicle comprising a suspension control system according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322169370.5U CN220548900U (en) | 2023-08-11 | 2023-08-11 | Suspension solenoid valve control circuit, suspension control system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322169370.5U CN220548900U (en) | 2023-08-11 | 2023-08-11 | Suspension solenoid valve control circuit, suspension control system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220548900U true CN220548900U (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322169370.5U Active CN220548900U (en) | 2023-08-11 | 2023-08-11 | Suspension solenoid valve control circuit, suspension control system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220548900U (en) |
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2023
- 2023-08-11 CN CN202322169370.5U patent/CN220548900U/en active Active
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