CN101844498B - Semiactive/active composite control suspension without external power source and control method thereof - Google Patents
Semiactive/active composite control suspension without external power source and control method thereof Download PDFInfo
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- CN101844498B CN101844498B CN2010101875623A CN201010187562A CN101844498B CN 101844498 B CN101844498 B CN 101844498B CN 2010101875623 A CN2010101875623 A CN 2010101875623A CN 201010187562 A CN201010187562 A CN 201010187562A CN 101844498 B CN101844498 B CN 101844498B
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Abstract
The invention discloses a semiactive/active composite control suspension without an external power source and a control method thereof, belonging to the field of automobiles. A hydraulic cylinder and a spring are connected in parallel and then connected between sprung mass and unsprung mass, and each oil way comprises a tank, a pressurizing package, a solenoid electric valve, an energy-regenerative power regulator and an energy accumulator; a control unit calculates the suspension control force after receiving the suspension state and the energy state information of the energy accumulator fed back by a speed and acceleration sensor group and a pressure sensor; when the control force and the speed of the sprung mass relative to the unsprung mass are in opposite directions, a semiactive energy feedback working mode is activated, and vibration energy between suspensions is converted to hydraulic energy and is stored in the energy accumulator for later use; and when the control force and the speed of the sprung mass relative to the unsprung mass are in the same direction, an active damping working mode is activated, the hydraulic energy obtained in the semiactive energy feedback working mode is input to the suspensions to realize the active damping without an external power source, and the suspensions have reliable performance and long service life.
Description
Technical field
The present invention relates to automobile technical field, relate in particular to the suspension assembly on the automobile.
Background technology
Suspension is the general name of the vehicle frame and the power transmission connecting device between axletree or the wheel of automobile, its effect is that power and the power of transfer function between wheel and vehicle frame is turned round, buffering is passed to the impact of vehicle frame or vehicle body by uneven road surface, and the vibrations that cause thus of decay, travels to guarantee that automobile is smooth-going.
Suspension is divided into passive suspension, active suspension and semi-active suspension by the control forms difference.Wherein, passive suspension mainly is made up of spring and bumper, its rigidity and damping parameter generally are to select by empirical design or Optimization Design, and its defective is: damping and stiffness parameters can't change with external status in vehicle traveling process once determining.Active suspension is by a kind of novel suspension of computer control, multiple sensors is arranged and relevant data is focused on computer, and it can export active controlling force in real time according to the motoring condition and the condition of road surface of automobile, and to obtain better riding comfort, its defective is; Need increase an external power source and active force output unit in suspension, structure is complicated, and will consume a large amount of external energies.Semi-active suspension is meant that one of suspension element medi-spring and shock absorber can carry out real-time regulated as required, generally is the damping element that damping value unmodified bumper in the passive suspension is transformed into the damping value Adjustable real-time, and its defective is; The damping element of this damping value Adjustable real-time belongs to dissipative cell, and suspension property is poor than active suspension.
Summary of the invention
The objective of the invention is for overcoming passive suspension, active suspension and semi-active suspension deficiency separately in the above-mentioned prior art, a kind of half compound control suspension of active/active is provided, need not external power source, simple and reliable for structure.
Another object of the present invention provides the control method of the half compound control suspension of active/active of no external power source, can realize the control of active suspension and semi-active suspension simultaneously.
The technical scheme that the present invention does not have the compound control suspension employing of half active/active of external power source is: connect spring between spring carried mass and the nonspring carried mass, hydraulic ram be connected between spring carried mass and the nonspring carried mass after described spring is in parallel, the epicoele interface of hydraulic ram is connected with first solenoid electric valve in turn and fuel tank forms oil circuit through oil pipe; Fuel tank forms oil circuit through the be linked in sequence epicoele interface of supercharging bag, first check valve and hydraulic ram of oil pipe; The epicoele interface of hydraulic ram forms oil circuit through the be linked in sequence A point place of second solenoid electric valve and oil pipe of oil pipe; The epicoele interface of hydraulic ram forms oil circuit through the be linked in sequence second energy regenerative power governor, second check valve and described A point place of oil pipe; A point place, pressure sensor, energy storage are connected fuel tank formation oil circuit after oil pipe is linked in sequence safety valve in parallel and external power consumption parts; The cavity of resorption interface of hydraulic ram is connected A point place and forms oil circuit after oil pipe has been linked in sequence the first energy regenerative power governor and second check valve; The cavity of resorption interface of hydraulic ram connects A point place and forms oil circuit after oil pipe has been linked in sequence the 3rd solenoid electric valve; Fuel tank forms oil circuit through the be linked in sequence cavity of resorption interface of supercharging bag, the 3rd check valve and hydraulic ram of oil pipe; Hydraulic ram cavity of resorption interface connects the 4th solenoid electric valve and fuel tank formation oil circuit through oil pipe; Be fixed with first speed and groups of acceleration sensors on the described spring carried mass, be fixed with second speed and groups of acceleration sensors on the nonspring carried mass, first speed is connected control unit with groups of acceleration sensors and second speed respectively with groups of acceleration sensors, each described solenoid electric valve, pressure sensor.
It is as follows that the present invention does not have the technical scheme that the control method of the half compound control suspension of active/active of external power source adopts: control unit is accepted calculating suspension control effort after the power status information of suspension state that first speed and groups of acceleration sensors, second speed and groups of acceleration sensors and pressure sensor feeds back and energy storage; When the direction of required control effort and spring carried mass are half active energy feedback working mode during with respect to the nonspring carried mass velocity reversal, by hydraulic ram and half active energy feedback oil circuit the vibrational energy between suspension is converted into hydraulic pressure and can and be stored in the energy storage standby; When the direction of required control effort and spring carried mass are the active damping mode of operation with respect to nonspring carried mass speed in the same way the time, by hydraulic ram and active damping oil circuit the hydraulic pressure of feedback gained under the half active energy feedback working mode can be input to and realize active damping between suspension.
The invention has the beneficial effects as follows:
1, the present invention uses hydraulic ram to replace the energy dissipative device of traditional suspension, this hydraulic ram feeds back oil circuit/active damping oil circuit cooperating with half controlled active energy under the effect of control unit, have two kinds of mode of operations of half active energy feedback model and active damping pattern, under half Active Control Mode, absorb the vibrational energy between suspension and store standby.Not needing to realize the active damping of external power source under Active Control Mode, output vibration damping active force is so that vehicle obtains good and economic and good ride comfort and road-holding property.
2, the present invention is owing to adopt hydraulic ram and corresponding oil channel structures is realized control, makes that whole suspension property is reliable, cost is low, long service life.
Description of drawings
Fig. 1 is a structure connection diagram of the present invention.
Among the figure: 1. hydraulic ram; 2. first speed and groups of acceleration sensors; 3. control unit; 4. first solenoid electric valve; 5. first check valve; 6. second solenoid electric valve; 7. energy storage; 8. second check valve; 9. pressure sensor; 10. safety valve; 11. external power consumption parts; 12. the 3rd solenoid electric valve; 13. supercharging bag; 14. fuel tank; 15. the 3rd check valve; 16. the 4th solenoid electric valve; 17. the first energy regenerative power governor; 18. the second energy regenerative power governor; 19. equivalent spring; 20. nonspring carried mass; 21. second speed and groups of acceleration sensors; 22. spring; 23. spring carried mass.
The specific embodiment
As shown in Figure 1, the present invention mainly comprises spring 22, hydraulic ram 1, control unit 3, first speed and acceleration pick-up 2, second speed and acceleration pick-up 21, energy storage 7, external power consumption parts 11, supercharging bag 13, fuel tank 14, the first energy regenerative power governor 17, the second energy regenerative power governor 18, parts such as a plurality of solenoid electric valves and check valve, and each oil pipe that connects them is formed, each oil pipe has been formed different oil circuit of the present invention with each parts, specifically be divided into oil circuit a, oil circuit b, oil circuit c, oil circuit d, oil circuit e, oil circuit f, oil circuit g, oil circuit h, these nine oil circuits of oil circuit i, below this nine oil circuits are described respectively:
Oil circuit a, origin or beginning is the epicoele interface of hydraulic ram 1, and the epicoele interface of hydraulic ram 1 connects first solenoid electric valve, 4, the first solenoid electric valves 4 through oil pipe and is communicated with fuel tank 14 through oil pipe, and fuel tank 14 is the not-go-end of oil circuit a.
Oil circuit b, origin or beginning is a fuel tank 14, and fuel tank 14 is communicated with the epicoele interface of hydraulic ram 1 after oil pipe is linked in sequence supercharging bag 13, first check valve 5, and the epicoele interface of hydraulic ram 1 is the not-go-end of oil circuit b.
Oil circuit c, origin or beginning is the epicoele interface of hydraulic ram 1, and the epicoele interface of hydraulic ram 1 connects second solenoid electric valve, 6, the second solenoid electric valves 6 are communicated to Fig. 1 through oil pipe A point place through oil pipe, promptly connect the A point place that has on the oil pipe, this A point place is the not-go-end of oil circuit c.
Oil circuit d, origin or beginning is the epicoele interface of hydraulic ram 1, and the epicoele interface of hydraulic ram 1 is connected to A point place with oil pipe again after oil pipe is linked in sequence the second energy regenerative power governor 18 and second check valve 8, and A point place is the not-go-end of oil circuit d.
Oil circuit e, origin or beginning is A point place, and A point place, pressure sensor 9, energy storage 7 are linked in sequence to safety valve 10 and external power consumption parts 11 through oil pipe, and safety valve 10 and external power consumption parts 11 parallel connections are after oil pipe is connected fuel tank 14, and fuel tank 14 is the not-go-end of oil circuit e.
Oil circuit f, origin or beginning is the cavity of resorption interface of hydraulic ram 1, and the cavity of resorption interface of hydraulic ram 1 is connected A point place with oil pipe again after oil pipe is linked in sequence the first energy regenerative power governor 17 and second check valve 8, and A point place is the not-go-end of oil circuit f.Shared second check valve 8 of this oil circuit f and oil circuit d.
Oil circuit g, origin or beginning is the cavity of resorption interface of hydraulic ram 1, and the cavity of resorption interface of hydraulic ram 1 is connected to A point place with oil pipe again after oil pipe is linked in sequence the 3rd solenoid electric valve 12, and A point place is the not-go-end of oil circuit g.
Hence one can see that, and above-described oil circuit c, oil circuit d, oil circuit e, oil circuit f, oil circuit g have all passed through public A point place.
Oil circuit h, origin or beginning is a fuel tank 14, and fuel tank 14 connects the cavity of resorption interface of hydraulic ram 1 after oil pipe is linked in sequence supercharging bag 13, the 3rd check valve 15, and the cavity of resorption interface of hydraulic ram 1 is the not-go-end of oil circuit h.The shared supercharging bag 13 of this oil circuit h and oil circuit b.
Oil circuit i, origin or beginning is the cavity of resorption interface of hydraulic ram 1, and the cavity of resorption interface of hydraulic ram 1 connects fuel tank 14 after oil pipe connects the 4th solenoid electric valve 16, and fuel tank 14 is the not-go-end of oil circuit i.
Spring carried mass 23 among Fig. 1 is the vehicle body or the vehicle frame of automobile, and nonspring carried mass 20 is the wheel or the axletree quality of automobile, and equivalent spring 19 is and the spring of wheel or axletree equivalence that spring carried mass 23 is connected by spring 22 with nonspring carried mass 20.Hydraulic ram 1 is connected between spring carried mass 23 and the nonspring carried mass 20, and spring 22 is in state in parallel with hydraulic ram 1.First speed and groups of acceleration sensors 2 are fixed on the spring carried mass 23, second speed and groups of acceleration sensors 21 are fixed on the nonspring carried mass 20, and first speed and groups of acceleration sensors 2 and second speed and groups of acceleration sensors 21, each solenoid electric valve, pressure sensor 9 are connected to control unit 3 by control line respectively.First speed and groups of acceleration sensors 2 provide cooresponding spring carried mass speed and acceleration signal for control unit 3, second speed and groups of acceleration sensors 21 provide cooresponding nonspring carried mass speed and acceleration signal for control unit 3, and pressure sensor 9 provides the hydraulic oil pressure force signal of energy storage 7 for control unit 3.Control unit 3 is controlled each solenoid electric valve respectively.。
The present invention is when real work, it is available to have single epicoele half active energy feedback/active damping oil circuit, single cavity of resorption half active energy feedback/active damping oil circuit, three kinds of oil circuit mode of operations of two-chamber half active energy feedback/active damping oil circuit, and promptly half active energy feedback is divided into single epicoele half active energy feedback, single cavity of resorption half active energy feedback and two-chamber half active energy feedback.
Single epicoele half active energy feedback/active damping oil circuit, single cavity of resorption half active energy feedback/active damping oil circuit, these three kinds of oil circuit mode of operations of two-chamber half active energy feedback/active damping oil circuit can be distinguished and realize the partly compound control of active/active of suspension of the present invention separately, below describe this three kinds of oil circuits respectively:
Because oil circuit c, oil circuit d, oil circuit e, oil circuit f, oil circuit g are all through the common point place of this oil pipe of A point place, the present invention connects oil circuit c and oil circuit d after the place's parallel connection of A point again with oil circuit e, series position also is the origin or beginning A point place of oil circuit e, in parallel with oil circuit a and oil circuit b again after the series connection, form single epicoele half active energy feedback/active damping oil circuit.
Oil circuit f and oil circuit g are connected with oil circuit e after the place's parallel connection of A point again, and series position is the origin or beginning A point place of oil circuit e, and is in parallel with oil circuit h and oil circuit i again after the series connection, forms single cavity of resorption half active energy feedback/active damping oil circuit.
The first energy regenerative power governor 17 and the second energy regenerative power governor 18 are used to regulate the maximum damping force of single epicoele half active energy feedback/active damping oil circuit and single epicoele half active energy feedback/active damping oil circuit respectively.
Two-chamber half active energy feedback/active damping oil circuit is made up of single epicoele half active energy feedback/active damping oil circuit and single cavity of resorption half active energy feedback/active damping oil circuit, so, below with suspension with two-chamber half active energy feedback/active damping oil circuit can be comprehensively, specifically describe principle of work of the present invention:
Based on above-mentioned principle of work: the control method that the following specifically describes suspension with two-chamber half active energy feedback/active damping oil circuit:
Control method under the half active energy feedback working mode is: when spring carried mass 23 is to make the big direction of distance change between them with respect to nonspring carried mass 20 speed, and when opposite with the direction of required vibration damping control effort, then the energy back of the single cavity of resorption half active energy feedback/active damping oil circuit under the half active energy feedback working mode and the realization of half active damping comprise 2 processes: one, epicoele oil-feed process: contained first solenoid electric valve 4 of 3 couples of oil circuit a of control unit, contained the 3rd solenoid electric valve of contained second solenoid electric valve 6 of oil circuit c and oil circuit g 12 output closing signals, hydraulic oil through oil circuit b (be hydraulic oil through 13 superchargings of supercharging bag after first check valve 5 enters into the epicoele of hydraulic ram 1), is finished the oil-feed process of epicoele from fuel tank 14.Two, cavity of resorption energy regenerative and half active damping process: when contained the 4th solenoid electric valve 16 of oil circuit i was opened, the application force on the piston of hydraulic ram 1 was zero, and the energy regenerative dumping force that promptly provides is zero; When the 4th solenoid electric valve 16 cuts out, the piston of hydraulic ram 1 makes and produces certain pressure in the cavity of resorption of hydraulic ram 1, when this pressure can overcome oil circuit in the first energy regenerative power governor 17 and opens and closes spring pressure, open the first energy regenerative power governor 17, pressure oil in the cavity of resorption provides maximum energy regenerative dumping force simultaneously through oil circuit f (the first energy regenerative power governor 17 of promptly flowing through, second check valve 8 are stored in the accumulator 7); Control unit 3 can be exported PWM (pulse duration modulation) control signals to the 4th solenoid electric valve 16 according to the needs of vibration damping, to be implemented in the half active damping dumping force that the output average differs in size in the different pulse duration modulation cycle of operationss.
When spring carried mass 23 is to make the direction that distance diminishes between them with respect to nonspring carried mass 20 speed, and when opposite with the direction of required vibration damping control effort, then the energy back of the single epicoele half active energy feedback/active damping oil circuit under the half active energy feedback working mode and the realization of half active damping comprise 2 processes: one, cavity of resorption oil-feed process: 3 pairs second solenoid electric valves 6 of control unit, the 3rd solenoid electric valve 12 and the 4th solenoid electric valve 16 output closing signals, hydraulic oil from fuel tank 14 through oil circuit h (be hydraulic oil after 13 superchargings of supercharging bag by the cavity of resorption that enters into hydraulic ram 1 through the 3rd check valve 15, finish the oil-feed process of cavity of resorption.Two, epicoele energy regenerative and half active damping process: when first solenoid electric valve 4 was opened, the application force on the piston of hydraulic ram 1 was zero, and the energy regenerative dumping force that promptly provides is zero; When first solenoid electric valve 4 cuts out, the piston of hydraulic ram 1 makes and produces certain pressure in the epicoele of hydraulic ram 1, when this pressure can overcome oil circuit in the second energy regenerative power governor 18 and opens and closes spring pressure, open the second energy regenerative power governor 18, upper cavity pressure oil is stored in the accumulator 7 through oil circuit d (comprising the second energy regenerative power governor 18 and second check valve 8), and maximum energy regenerative dumping force is provided simultaneously; Control unit 3 can be exported PWM (pulse duration modulation) control signals to first solenoid electric valve 4 according to the needs of vibration damping, to be implemented in the half active damping dumping force that the output average differs in size in the different pulse duration modulation cycle of operationss.
Control method under the active damping oil circuit pattern is: when spring carried mass 23 is to make the big direction of distance change between them with respect to nonspring carried mass 20 speed, and when identical with the direction of required vibration damping control effort, the implementation method of the active damping of the single epicoele half active energy feedback/active damping oil circuit under the active damping pattern then of the present invention is: 3 pairs the 3rd solenoid electric valves of control unit, 12 output closing signals, 3 pairs the 4th solenoid electric valves of control unit, 16 output start signal; When second solenoid electric valve 6 cut out, first solenoid electric valve 4 was opened, and the application force on the piston of hydraulic ram 1 is zero, and the vibration damping active force that promptly provides is zero; When second solenoid electric valve 6 was opened, first solenoid electric valve 4 cut out, and pressure oil enters into the epicoele of hydraulic ram 1 by accumulator 7 by second solenoid electric valve 6 and oil pipe, for suspension provides maximum vibration damping active force; Control unit 3 can be exported PWM (pulse duration modulation) control signals to second solenoid electric valve 6 according to the needs of vibration damping, to be implemented in the vibration damping active force that the output average differs in size in the different pulse duration modulation cycle of operationss.
When spring carried mass 23 is to make the direction that distance diminishes between them with respect to nonspring carried mass 20 speed, and when identical with the direction of required vibration damping control effort, the implementation method of the active damping of the single cavity of resorption half active energy feedback/active damping oil circuit under the active damping pattern then of the present invention is: 3 pairs second solenoid electric valves of control unit, 6 output closing signals, 3 pairs first solenoid electric valves of control unit, 4 output start signal; When the 3rd solenoid electric valve 12 cut out, the 4th solenoid electric valve 16 was opened, and the application force on the piston of hydraulic ram 1 is zero, and the vibration damping active force that promptly provides is zero; When the 3rd solenoid electric valve 12 was opened, the 4th solenoid electric valve 16 cut out, and pressure oil enters into the cavity of resorption of hydraulic ram 1 by accumulator 7 by the 3rd solenoid electric valve 12, oil pipe, for suspension provides maximum vibration damping active force; Control unit 3 can be exported PWM (pulse duration modulation) control signals to the 3rd solenoid electric valve 12 according to the needs of vibration damping, to be implemented in the vibration damping active force that the output average differs in size in the different pulse duration modulation cycle of operationss.
Claims (4)
1. half compound control suspension of active/active that does not have external power source, connect spring (22) between spring carried mass (23) and the nonspring carried mass (20), hydraulic ram (1) be connected between spring carried mass (23) and the nonspring carried mass (20) after described spring (22) is in parallel, the epicoele interface of hydraulic ram (1) is connected with first solenoid electric valve (4) to fuel tank (14) in turn through oil pipe and forms oil circuit a; Fuel tank (14) forms oil circuit b through oil pipe supercharging bag (13), first check valve (5) to the epicoele interface of hydraulic ram (1) that is linked in sequence; The epicoele interface of hydraulic ram (1) forms oil circuit c through the be linked in sequence A point place of second solenoid electric valve (6) and oil pipe of oil pipe; The epicoele interface of hydraulic ram (1) forms oil circuit d through the be linked in sequence second energy regenerative power governor (18), second check valve (8) and described A point place of oil pipe; A point place, pressure sensor (9), energy storage (7) are connected to fuel tank (14) and form oil circuit e after oil pipe is linked in sequence safety valve (10) in parallel and external power consumption parts (11); The cavity of resorption interface of hydraulic ram (1) is connected A point place and forms oil circuit f after oil pipe has been linked in sequence the first energy regenerative power governor (17) and second check valve (8); The cavity of resorption interface of hydraulic ram (1) connects A point place and forms oil circuit g after oil pipe has been linked in sequence the 3rd solenoid electric valve (12); Fuel tank (14) forms oil circuit h through oil pipe described supercharging bag (13), the 3rd check valve (15) to the cavity of resorption interface of hydraulic ram (1) that is linked in sequence; Hydraulic ram (1) cavity of resorption interface connects the 4th solenoid electric valve (16) to fuel tank (14) through oil pipe and forms oil circuit i; Be fixed with first speed and groups of acceleration sensors (2) on the described spring carried mass (23), be fixed with second speed and groups of acceleration sensors (21) on the nonspring carried mass (20), first speed is connected control unit (3) with groups of acceleration sensors (2) and second speed respectively with groups of acceleration sensors (21), each described solenoid electric valve, pressure sensor (9), it is characterized in that:
Described oil circuit c and oil circuit d connect with oil circuit e after the place's parallel connection of A point, again with the single epicoele half active energy feedback/active damping oil circuit of oil circuit a and oil circuit b formation in parallel; Oil circuit f and oil circuit g connect with oil circuit e after the place's parallel connection of A point, again with the single cavity of resorption half active energy feedback/active damping oil circuit of oil circuit h and oil circuit i formation in parallel; Single epicoele half active energy feedback/active damping oil circuit and single cavity of resorption half active energy feedback/active damping oil circuit are formed two cavity of resorption half active energy feedback/active damping oil circuits.
2. the control method of a control suspension as claimed in claim 1 is characterized in that as follows:
1) calculates the suspension control effort after the power status information of the suspension state of control unit (3) acceptance first speed and groups of acceleration sensors (2), second speed and groups of acceleration sensors (21) and pressure sensor (9) feedback and energy storage (7);
2) when the direction of required control effort and spring carried mass (23) be half active energy feedback working mode during with respect to nonspring carried mass (20) velocity reversal, by hydraulic ram (1) and half active energy feedback oil circuit the vibrational energy between suspension is converted into hydraulic pressure and can and be stored in the energy storage (7) standby; When the direction of required control effort and spring carried mass (23) are the active damping mode of operation with respect to nonspring carried mass (20) speed in the same way the time, by hydraulic ram (1) and active damping oil circuit the hydraulic pressure of feedback gained under the half active energy feedback working mode can be input to and realize active damping between suspension.
3. control method according to claim 2, it is characterized in that: the implementation procedure of the single cavity of resorption half active energy feedback/active damping oil circuit under the half active energy feedback working mode is: at first be that control unit (3) is exported closing signal to first solenoid electric valve (4) of oil circuit a, second solenoid electric valve (6) of oil circuit c and the 3rd solenoid electric valve (12) of oil circuit g, hydraulic oil is finished the oil-feed process of epicoele through oil circuit b from fuel tank (14); Close the 4th solenoid electric valve (16) then and make in the cavity of resorption of hydraulic ram (1) and produce pressure, open the first energy regenerative power governor (17), make the cavity of resorption pressure oil provide maximum energy regenerative dumping force through oil circuit f;
The implementation procedure of the single epicoele half active energy feedback/active damping oil circuit under the half active energy feedback working mode is: at first be that control unit (3) is exported closing signal to second solenoid electric valve (6), the 3rd solenoid electric valve (12) and the 4th solenoid electric valve (16), hydraulic oil is finished the oil-feed process of cavity of resorption through oil circuit h from fuel tank (14); Close first solenoid electric valve (4) then and make the epicoele of hydraulic ram (1) produce pressure, open the second energy regenerative power governor (18), make upper cavity pressure oil provide maximum energy regenerative dumping force through oil circuit d;
The implementation method of the active damping of the single epicoele half active energy feedback/active damping oil circuit under the active damping mode of operation is: control unit (3) makes that the 3rd solenoid electric valve (12) cuts out, the 4th solenoid electric valve (16) is opened, second solenoid electric valve (6) is opened and first solenoid electric valve (4) cuts out, and the epicoele that pressure oil enters hydraulic ram (1) by accumulator (7) by second solenoid electric valve (6) provides the vibration damping active force of maximum;
The implementation method of the active damping of the single cavity of resorption half active energy feedback/active damping oil circuit under the active damping mode of operation is: control unit (3) makes that second solenoid electric valve (6) cuts out, first solenoid electric valve (4) is opened, the 3rd solenoid electric valve (12) is opened and the 4th solenoid electric valve (16) cuts out, and the cavity of resorption that pressure oil enters hydraulic ram (1) by accumulator (7) by the 3rd solenoid electric valve (12) provides the vibration damping active force of maximum.
4. control method according to claim 3 is characterized in that: control unit (3) is respectively to first solenoid electric valve (4), second solenoid electric valve (6), the 3rd solenoid electric valve (12), the 4th solenoid electric valve (16) output pwm control signal.
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| CN2010101875623A CN101844498B (en) | 2010-05-28 | 2010-05-28 | Semiactive/active composite control suspension without external power source and control method thereof |
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| CN2010101875623A CN101844498B (en) | 2010-05-28 | 2010-05-28 | Semiactive/active composite control suspension without external power source and control method thereof |
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| CN101844498B true CN101844498B (en) | 2011-12-21 |
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| CN104401198B (en) * | 2014-09-23 | 2016-10-05 | 东北农业大学 | Hydraulic vehicle active suspension system |
| CN106930988A (en) * | 2017-03-24 | 2017-07-07 | 南京航空航天大学 | Sound state bidirectional hydraulic loading device and its control method based on accumulator |
| CN110497760B (en) * | 2019-08-07 | 2020-09-18 | 燕山大学 | Active and passive dual-mode switchable vehicle suspension system and switching method thereof |
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| CN112757858B (en) * | 2021-01-21 | 2022-05-03 | 西安科技大学 | Vehicle electro-hydraulic energy feedback type interconnected suspension system and control method thereof |
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| CN1562652A (en) * | 2004-04-16 | 2005-01-12 | 江苏大学 | Feeding-in energy type hanger bracket for vehicle use |
| CN2707546Y (en) * | 2004-04-16 | 2005-07-06 | 江苏大学 | Energy feeding back type semi-active suspension |
| CN1810530A (en) * | 2005-12-16 | 2006-08-02 | 西北工业大学 | Switchable vehicle active/semi-active suspension |
| CN201694020U (en) * | 2010-05-28 | 2011-01-05 | 江苏大学 | Semi-active/active compound control suspension bracket without external power source |
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|---|---|
| CN101844498A (en) | 2010-09-29 |
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