CN102152811B - Method for controlling static and dynamic liquid composite steering delay of caterpillar - Google Patents
Method for controlling static and dynamic liquid composite steering delay of caterpillar Download PDFInfo
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- CN102152811B CN102152811B CN 201110047935 CN201110047935A CN102152811B CN 102152811 B CN102152811 B CN 102152811B CN 201110047935 CN201110047935 CN 201110047935 CN 201110047935 A CN201110047935 A CN 201110047935A CN 102152811 B CN102152811 B CN 102152811B
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Abstract
The invention relates to a method for controlling the static and dynamic liquid composite steering delay of a caterpillar. The method comprises the following steps: using a pressure change course curve and the participation and operation quit timing of a coupler of a steering pump motor as a control target; and controlling the oil charging and discharging mass of the coupler through an electro-hydraulic proportional valve to control the output torque of the coupler, thereby reaching the purpose of controlling the pressure fluctuation of the pump motor. The control valve special for the static and dynamic liquid composite steering of the caterpillar enables the performance of a static and dynamic liquid composite steering system to be prompted, can enhance the riding comfortableness of a tank, reduce the labor intensity of a driver, prolong the service life of the pump motor, enhance the steering efficiency of the steering system, fully utilize energy sources and save fuel.
Description
Technical field
The present invention relates to control valve special, specifically, be related to the compound rotating direction control method of vehicle.
Background technology
At present, the compound continuous turning of the quiet hydrodynamic of certain model continuously tracked vehicle has adopted pure fluid control scheme, the pump motor pressure occurred during for fear of quiet hydrodynamic associated working significantly fluctuates, the fluid control valve group has adopted the cutoff port damping, action with sluggish oil charge valve, but another negative effect that throttle style brings is opening of steering control valve, the pass response time is long, the fluctuation of pump motor pressure is large, the fluctuation time is long, for this reason, in the positive sample stage, the pilot valve of having connected before the oil charge valve of each impeller disk, and the cracking pressure of pilot valve is lower than main valve, pressure changing by the testing vehicle steering situation, opening of valve group, closing response makes moderate progress, but response time and fluctuating range are still longer, therefore, need a kind of new control cock of research.
Summary of the invention
The object of the invention is in view of the foregoing defects the prior art has, a kind of compound control valve special that turns to of quiet hydrodynamic that military continuously tracked vehicle is used that is suitable for is provided, this valve is taked automatically controlled mode, there is the function that impeller disk power-assisted situation is controlled in real time, to solve the compound problem that turns to middle pump motor pressure fluctuation of quiet hydrodynamic, realize smooth-going turning to, this control cock can effectively suppress the fluctuation of pump motor pressure, extend the service life of pump motor, promote the compound steering swivel system performance of quiet hydrodynamic.
For achieving the above object, sluggish control cock basic conception provided by the present invention is as follows: the opportunity that the pressure change procedure curve of steering pump motor, impeller disk are participated in, deactivate is as controlling target, control the oil charging-discharging oil mass of impeller disk by electro-hydraulic proportional valve, to control the impeller disk output torque, to reach the purpose of control pump motor pressure fluctuation.
The quiet hydrodynamic of a kind of continuously tracked vehicle provided by the invention is compound turns to sluggish control method, comprises the following steps:
1) select conjuncted pump motor, zero axle, impeller disk, load, proportional flow control valve, solenoid directional control valve, by pass valve and microprocessor; Conjuncted pump motor is connected with pressure sensor by oil pipe, and conjuncted pump motor is connected with load by zero axle; Zero axle is connected with an impeller disk by steering wheel, by gear, with another impeller disk, is connected, and by oil pipe, with solenoid directional control valve, is connected; Described solenoid directional control valve is in series by valve plate and proportional flow control valve, and solenoid directional control valve passing ratio flow valve is in parallel with by pass valve; One end of described microprocessor is connected with pressure sensor, and the other end is connected with proportion magnetic valve, solenoid directional control valve;
2) power of input is defeated by respectively on the driving wheel pump impeller of conjuncted pump motor and impeller disk; Reach and be more than or equal to 200bar at conjuncted pump motor high-pressure, impeller disk participates in outputting power, servo-steering; At conjuncted pump motor high-pressure, reach lower than 150bar, impeller disk is outputting power not, exits and turns to;
3) impeller disk turns to by zero axle boost pump motor, during left steering, and the impeller disk power-assisted connected by idle pulley; During right steering, by another impeller disk power-assisted of gear; While turning to, produce high pressure and low pressure oil way, and steering direction is corresponding with high pressure, low pressure distribution on two oil circuits, microprocessor gathers high pressure, low pressure signal, and decision-making goes out the Vehicular turn direction;
4), when the on high-tension side pressure of conjuncted pump motor lower than 80bar the time, microprocessor output control signal is closed solenoid directional control valve; When the on high-tension side pressure of conjuncted pump motor surpasses 80bar, microprocessor outputs a control signal to according to the steering direction of vehicle the opening direction that solenoid directional control valve is controlled electromagnetic valve, and then controls which impeller disk and prepare to participate in power-assisted;
5) when the pump motor pressure surpasses 200bar, microprocessor is according to the control policy of proportional flow control valve, the opening of control ratio flow valve.
The quiet hydrodynamic of the provided by the invention first preferred continuously tracked vehicle is compound turns to sluggish control method, and described conjuncted pump motor is comprised of pump, swash plate and motor; Described oil pipe is the connected pipes on conjuncted pump motor, and pressure sensor is arranged on the oil-feed oil circuit of conjuncted pump motor and on oil return circuit, to record high pressure and low pressure.
The quiet hydrodynamic of the provided by the invention second preferred continuously tracked vehicle is compound turns to sluggish control method, and described microprocessor is micro controller system.
The quiet hydrodynamic of the provided by the invention the 3rd preferred continuously tracked vehicle is compound turns to sluggish control method, and proportional flow control valve and solenoid directional control valve are arranged on same valve plate, and the three is combined into a valve group, and the valve group is provided with oil-feed hydraulic fluid port, fuel-displaced hydraulic fluid port and oil return hydraulic fluid port.
The quiet hydrodynamic of the provided by the invention the 4th preferred continuously tracked vehicle is compound turns to sluggish control method, the oil-feed hydraulic fluid port of valve group is that external pump is to valve group fuel feeding, and limit charge oil pressure with a by pass valve, when proportional flow control valve is opened, the oil of feed cock group consists of working oil by valve and enters into impeller disk, makes impeller disk participate in servo-steering, and unnecessary oil is got back to fuel tank by the return opening of valve plate, when proportional flow control valve is closed, the fuel feeding of system is by the direct oil sump tank of valve plate return opening.
The quiet hydrodynamic of the provided by the invention the 5th preferred continuously tracked vehicle is compound turns to sluggish control method, and oil return circuit is realized by the combination of Multi-oil circuit valve plate.
The quiet hydrodynamic of the provided by the invention the 6th preferred continuously tracked vehicle is compound turns to sluggish control method, and described micro controller system is 8051 micro controller systems.
The quiet hydrodynamic of the provided by the invention the 7th preferred continuously tracked vehicle is compound turns to sluggish control method, and described valve plate is for establishing vittate No. 45 steel plates.
The quiet hydrodynamic of the provided by the invention the 8th preferred continuously tracked vehicle is compound turns to sluggish control method, the control policy of described proportional flow control valve is for dropping to the 150bar process from 200bar when the pump motor pressure, the opening of flow valve is 20%, when the pump motor pressure, lower than 150bar the time, proportional flow control valve is closed.
The quiet hydrodynamic of the provided by the invention the 9th preferred continuously tracked vehicle is compound turns to sluggish control method, and described opening is 20%-100%.
Microprocessor is micro controller system or ECU.
Sluggish control cock is characterized in that: take automatically controlled electromagnetic valve can take full advantage of computer programming, and the oil-filled amount of ACTIVE CONTROL impeller disk, faster system response, solved the simple problem of leaning on the fluctuation of pressure of fluid control generation.
Compared with prior art, the quiet hydrodynamic of a kind of continuously tracked vehicle provided by the invention is compound turns to sluggish control cock to have the following advantages:
1, the compound control valve special that turns to of the quiet hydrodynamic of continuously tracked vehicle gets a promotion the compound steering swivel system performance of quiet hydrodynamic, can improve the travelling comfort of tank;
2, this control method is when impeller disk just participates in servo-steering, by sluggish control method, reduced when impeller disk participates in servo-steering, pump motor pressure moment declines to a great extent, impeller disk stops power-assisted immediately, the pump motor pressure significantly rises again, and impeller disk starts again power-assisted, and the concussion of the pressure fluctuation of the pump motor occurred, the impeller disk phenomenon of open and close repeatedly; Therefore the stationarity of steering swivel system is improved to turn to impact and reduces the tank ride comfort;
3, extend the service life of pump motor, improve the efficiency that turns to of steering swivel system, take full advantage of the energy, capable of saving fuel oil.The pressure oscillation on large scale of pump motor reduces to impact the life-span that reduces to be conducive to increase the pump motor.Reduce the time of impeller disk participation work, what increase system turns to efficiency, (the pump moyor is high higher than impeller disk so system effectiveness)
4, adopt electric control solenoid valve to solve the compound problem that turns to coupling to amount to same stable working of quiet hydrodynamic, research has reached satisfied effect, has reached the leading level in the world.
5, extend the service life of pump motor, improve the efficiency that turns to of steering swivel system, take full advantage of the energy, capable of saving fuel oil.
6, adopt electric control solenoid valve to solve the compound problem that turns to coupling to amount to same stable working of quiet hydrodynamic, research has reached satisfied effect, has reached the leading level in the world.
The accompanying drawing explanation
Fig. 1: the quiet hydrodynamic of a kind of continuously tracked vehicle provided by the invention is compound turns to sluggish control system schematic diagram.
Fig. 2: the compound pump motor high pressure of sluggish control cock and the graph of a relation of apportioning valve opening of turning to of the quiet hydrodynamic of a kind of continuously tracked vehicle provided by the invention.
The specific embodiment
Below by drawings and Examples, the present invention is done to further more detailed description.
Embodiment 1
The quiet hydrodynamic of the continuously tracked vehicle of the present embodiment is compound turns to sluggish control method, comprises the following steps:
1) select conjuncted pump motor, zero axle, impeller disk, load, proportional flow control valve, solenoid directional control valve, by pass valve and microprocessor; Conjuncted pump motor is connected with pressure sensor by oil pipe, and conjuncted pump motor is connected with load by zero axle; Zero axle is connected with an impeller disk by steering wheel, by gear, with another impeller disk, is connected, and by oil pipe, with solenoid directional control valve, is connected; Solenoid directional control valve is in series by valve plate and proportional flow control valve, and solenoid directional control valve passing ratio flow valve is in parallel with by pass valve; One end of microprocessor is connected with pressure sensor, and the other end is connected with proportion magnetic valve, solenoid directional control valve;
2) power of input is defeated by respectively on the driving wheel pump impeller of conjuncted pump motor and impeller disk; Reach and be more than or equal to 200bar at conjuncted pump motor high-pressure, impeller disk participates in outputting power, servo-steering; At conjuncted pump motor high-pressure, reach lower than 150bar, impeller disk is outputting power not, exits and turns to;
3) impeller disk turns to by zero axle boost pump motor, during left steering, and the impeller disk power-assisted connected by steering wheel; During right steering, by another impeller disk power-assisted of gear; While turning to, produce high pressure and low pressure oil way, and steering direction is corresponding with high pressure, low pressure distribution on two oil circuits, microprocessor gathers high pressure, low pressure signal, and decision-making goes out the Vehicular turn direction;
4), when the on high-tension side pressure of conjuncted pump motor lower than 80bar the time, microprocessor output control signal is closed solenoid directional control valve; When the on high-tension side pressure of conjuncted pump motor surpasses 80bar, microprocessor outputs a control signal to according to the steering direction of vehicle the opening direction that solenoid directional control valve is controlled electromagnetic valve, and then controls which impeller disk and prepare to participate in power-assisted;
5) when the pump motor pressure surpasses 200bar, microprocessor is according to the control policy of proportional flow control valve, the opening of control ratio flow valve; Opening is 20%-100%.
Microprocessor is that micro controller system is 8051 micro controller systems; Conjuncted pump motor is comprised of pump, swash plate and motor; Oil pipe is the connected pipes on conjuncted pump motor, and pressure sensor is arranged on the oil-feed oil circuit of conjuncted pump motor and on oil return circuit, to record high pressure and low pressure.
Proportional flow control valve and solenoid directional control valve are arranged on same valve plate, and the three is combined into a valve group, and the valve group is provided with oil-feed hydraulic fluid port, fuel-displaced hydraulic fluid port and oil return hydraulic fluid port.
The oil-feed hydraulic fluid port of valve group is that external pump is to valve group fuel feeding, and limit charge oil pressure with a by pass valve, when proportional flow control valve is opened, the oil of feed cock group consists of working oil by valve and enters into impeller disk, make impeller disk participate in servo-steering, unnecessary oil is got back to fuel tank by the return opening of valve plate, and when proportional flow control valve is closed, the fuel feeding of system is by the direct oil sump tank of valve plate return opening.
Oil return circuit is realized by the combination of Multi-oil circuit valve plate; Valve plate is for establishing vittate No. 45 steel plates.
The control policy of proportional flow control valve is for dropping to the 150bar process from 200bar when the pump motor pressure, and the opening of flow valve is 20%, and when the pump motor pressure, lower than 150bar the time, proportional flow control valve is closed.
As shown in Figure 1: the power of input is defeated by respectively on the driving wheel pump impeller of conjuncted pump motor and impeller disk, impeller disk is at oil-filled state, the coupling turbine outputting power, and impeller disk is not having oil-filled state, the impeller disk pump impeller is in idling conditions, and impeller disk is outputting power not.
Conjuncted pump motor mainly is comprised of pump, swash plate and motor, two pressure sensors be arranged on respectively on the oil-feed oil circuit and oil return circuit on, what record is respectively high pressure and low pressure.
Right impeller disk is delivered to moment of torsion on zero axle by a pair of gear, and left impeller disk is delivered to moment of torsion on zero axle change the direction of output torque by steering wheel after, by zero axle, the moment of torsion of the moment of torsion of impeller disk output and the output of pump motor pools together, and is defeated by load.
While turning to difference, move the direction difference of swash plate to, when steering load increases to a certain degree, the power-assisted that impeller disk is in good time, which impeller disk power-assisted ECU (microprocessor) control ratio valve and change-over valve decision-making go out, and when power-assisted, help great power.A flow 105L/min oil pump is to the impeller disk fuel feeding, a delivery side of pump by pass valve in parallel.
The compound control valve special that turns to of the quiet hydrodynamic of continuously tracked vehicle consists of jointly proportional flow control valve, solenoid directional control valve, valve plate and electric-control system software and hardware; Proportional flow control valve, solenoid directional control valve are bought and are obtained by market; Valve plate is to process oil duct on No. 45 steel, two valves are connected with valve plate by pressing plate, paper washer sealing, the other end of valve plate connects entrance oil, oil return, and the working oil that advances coupler, realize the connection of proportional flow control valve and solenoid directional control valve, the entrance of electromagnetic proportional valve is all to be realized by valve plate to outlet and the return opening of change-over valve; 8051 micro controller systems act as the control that realizes proportional flow control valve, solenoid directional control valve valve.
Controlled object has two impeller disks in left and right, is responsible for respectively left and right vehicle wheel and turns to.During Vehicular turn, pull swash plate, the pump motor operations, pressure sensor gathers the pressure of pump motor high pressure side and low pressure side, give ECU, ECU judges and turns to high-voltage signal, decision-making goes out the left or right steering direction, when pressure reaches 80bar, open the change-over valve of response, when pressure continues to be elevated to 200bar or surpasses 200bar, open proportional flow control valve, and determine control policy according to the target of setting in Fig. 2, draw the aperture of proportional flow control valve, the quantitative control of realization to impeller disk fuel feeding in quiet hydrodynamic Combined Steering Mechanism, the output torque of impeller disk is controlled, and then suppressed the fluctuation of pump motor pressure, whole control process is closed loop control.
When the pump motor pressure reaches 300bar, it is maximum that the aperture of proportional flow electromagnetic valve reaches, and impeller disk is in full full state, if cornering resistance continues to increase, the pump motor pressure increases and bears load.
In order to prevent from valve work occurring opening frequently, closing circulation.In work, proportion magnetic valve 200bar opens moment, and the aperture of apportioning valve is made as 20%, and when pressure is raised to 300bar from 200bar, apportioning valve is with the pressure linear increase opening to 100% that raises.And pressure is when dropping to 150bar higher than 200bar, the apportioning valve aperture remains unchanged, and electromagnetic valve has completed sluggish control, and this section control has been played critical effect for the fluctuation of pressure that suppresses the pump motor.Pressure was closed lower than 150bar apportioning valve moment.
The compound control valve special that turns to of the quiet hydrodynamic of continuously tracked vehicle, in conjunction with controlled object, has verified that by stand test its control is satisfactory for result, has suppressed the fluctuation of pressure of pump motor, has improved the compound matching performance turned to of quiet hydrodynamic.
It is oil-filled which even summation device ECU controls by the opening direction of controlling change-over valve, controls the oil-filled moment and the oil-filled amount size of impeller disk according to the control policy shown in Fig. 2, and then control the impeller disk power-assisted moment and size.
Embodiment 2
The quiet hydrodynamic of the continuously tracked vehicle of the present embodiment is compound turns to sluggish control method, comprises the following steps:
1) select conjuncted pump motor, zero axle, impeller disk, load, proportional flow control valve, solenoid directional control valve, by pass valve and microprocessor; Conjuncted pump motor is connected with pressure sensor by oil pipe, and conjuncted pump motor is connected with load by zero axle; Zero axle is connected with an impeller disk by steering wheel, by gear, with another impeller disk, is connected, and by oil pipe, with solenoid directional control valve, is connected; Solenoid directional control valve is in series by valve plate and proportional flow control valve, and solenoid directional control valve passing ratio flow valve is in parallel with by pass valve; One end of microprocessor is connected with pressure sensor, and the other end is connected with proportion magnetic valve, solenoid directional control valve;
2) power of input is defeated by respectively on the driving wheel pump impeller of conjuncted pump motor and impeller disk; Reach and equal 200bar at conjuncted pump motor high-pressure, impeller disk participates in outputting power, servo-steering; Reach 140bar at conjuncted pump motor high-pressure, impeller disk is outputting power not, exits and turns to;
3) impeller disk turns to by zero axle boost pump motor, during left steering, and the impeller disk power-assisted connected by steering wheel; During right steering, by another impeller disk power-assisted of gear; While turning to, produce high pressure and low pressure oil way, and steering direction is corresponding with high pressure, low pressure distribution on two oil circuits, microprocessor gathers high pressure, low pressure signal, and decision-making goes out the Vehicular turn direction;
4), in the time of the on high-tension side pressure 70bar of conjuncted pump motor, microprocessor output control signal is closed solenoid directional control valve; In the time of the on high-tension side pressure 90bar of conjuncted pump motor, microprocessor outputs a control signal to according to the steering direction of vehicle the opening direction that solenoid directional control valve is controlled electromagnetic valve, and then controls which impeller disk and prepare to participate in power-assisted;
5) in the time of pump motor pressure 250bar, microprocessor is according to the control policy of proportional flow control valve, the opening of control ratio flow valve; Opening is 60%.
Microprocessor is that micro controller system is 8051 micro controller systems; Conjuncted pump motor is comprised of pump, swash plate and motor; Oil pipe is the connected pipes on conjuncted pump motor, and pressure sensor is arranged on the oil-feed oil circuit of conjuncted pump motor and on oil return circuit, to record high pressure and low pressure.
Proportional flow control valve and solenoid directional control valve are arranged on same valve plate, and the three is combined into a valve group, and the valve group is provided with oil-feed hydraulic fluid port, fuel-displaced hydraulic fluid port and oil return hydraulic fluid port.
The oil-feed hydraulic fluid port of valve group is that external pump is to valve group fuel feeding, and limit charge oil pressure with a by pass valve, when proportional flow control valve is opened, the oil of feed cock group consists of working oil by valve and enters into impeller disk, make impeller disk participate in servo-steering, unnecessary oil is got back to fuel tank by the return opening of valve plate, and when proportional flow control valve is closed, the fuel feeding of system is by the direct oil sump tank of valve plate return opening.
Oil return circuit is realized by the combination of Multi-oil circuit valve plate; Valve plate is for establishing vittate No. 45 steel plates.
The control policy of proportional flow control valve is for dropping to the 150bar process from 200bar when the pump motor pressure, and the opening of flow valve is 20%, and in the time of pump motor pressure 140bar, proportional flow control valve is closed.
As shown in Figure 1: the power of input is defeated by respectively on the driving wheel pump impeller of conjuncted pump motor and impeller disk, impeller disk is at oil-filled state, the coupling turbine outputting power, and impeller disk is not having oil-filled state, the impeller disk pump impeller is in idling conditions, and impeller disk is outputting power not.
Conjuncted pump motor mainly is comprised of pump, swash plate and motor, two pressure sensors be arranged on respectively on the oil-feed oil circuit and oil return circuit on, what record is respectively high pressure and low pressure.
Right impeller disk is delivered to moment of torsion on zero axle by a pair of gear, and left impeller disk is delivered to moment of torsion on zero axle change the direction of output torque by steering wheel after, by zero axle, the moment of torsion of the moment of torsion of impeller disk output and the output of pump motor pools together, and is defeated by load.
While turning to difference, move the direction difference of swash plate to, when steering load increases to a certain degree, the power-assisted that impeller disk is in good time, which impeller disk power-assisted ECU (microprocessor) control ratio valve and change-over valve decision-making go out, and when power-assisted, help great power.A flow 105L/min oil pump is to the impeller disk fuel feeding, a delivery side of pump by pass valve in parallel.
The compound control valve special that turns to of the quiet hydrodynamic of continuously tracked vehicle consists of jointly proportional flow control valve, solenoid directional control valve, valve plate and electric-control system software and hardware; Proportional flow control valve, solenoid directional control valve are bought and are obtained by market; Valve plate is to process oil duct on No. 45 steel, two valves are connected with valve plate by pressing plate, paper washer sealing, the other end of valve plate connects entrance oil, oil return, and the working oil that advances coupler, realize the connection of proportional flow control valve and solenoid directional control valve, the entrance of electromagnetic proportional valve is all to be realized by valve plate to outlet and the return opening of change-over valve; 8051 micro controller systems act as the control that realizes proportional flow control valve, solenoid directional control valve valve.
Controlled object has two impeller disks in left and right, is responsible for respectively left and right vehicle wheel and turns to.During Vehicular turn, pull swash plate, the pump motor operations, pressure sensor gathers the pressure of pump motor high pressure side and low pressure side, give ECU, ECU judges and turns to high-voltage signal, decision-making goes out the left or right steering direction, when pressure reaches 80bar, open the change-over valve of response, when pressure continues to be elevated to 200bar or surpasses 200bar, open proportional flow control valve, and determine control policy according to the target of setting in Fig. 2, draw the aperture of proportional flow control valve, the quantitative control of realization to impeller disk fuel feeding in quiet hydrodynamic Combined Steering Mechanism, the output torque of impeller disk is controlled, and then suppressed the fluctuation of pump motor pressure, whole control process is closed loop control.
When the pump motor pressure reaches 300bar, it is maximum that the aperture of proportional flow electromagnetic valve reaches, and impeller disk is in full full state, if cornering resistance continues to increase, the pump motor pressure increases and bears load.
In order to prevent in valve work occurring opening frequently, close circulation: in work, proportion magnetic valve 200bar opens moment, the aperture of apportioning valve is made as 20%, when pressure is raised to 300bar from 200bar, apportioning valve is with the pressure linear increase opening to 100% that raises.And pressure is when dropping to 150bar higher than 200bar, the apportioning valve aperture remains unchanged, and electromagnetic valve has completed sluggish control, and this section control has been played critical effect for the fluctuation of pressure that suppresses the pump motor.Pressure was closed lower than 150bar apportioning valve moment.
The compound control valve special that turns to of the quiet hydrodynamic of continuously tracked vehicle, in conjunction with controlled object, has verified that by stand test its control is satisfactory for result, has suppressed the fluctuation of pressure of pump motor, has improved the compound matching performance turned to of quiet hydrodynamic.
It is oil-filled which even summation device ECU controls by the opening direction of controlling change-over valve, controls the oil-filled moment and the oil-filled amount size of impeller disk according to the control policy shown in Fig. 2, and then control the impeller disk power-assisted moment and size.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment, the present invention is had been described in detail; those of ordinary skill in the field are to be understood that: technical personnel still can be modified or be equal to replacement the specific embodiment of the present invention after being read present specification, but these modifications or change all break away from the present patent application, does not await the reply within the claim protection domain.
Claims (10)
1. the quiet hydrodynamic of continuously tracked vehicle is compound turns to sluggish control method, comprises the following steps:
1) select conjuncted pump motor, zero axle, impeller disk, load, proportional flow control valve, solenoid directional control valve, by pass valve and microprocessor; Conjuncted pump motor is connected with pressure sensor by oil pipe, and conjuncted pump motor is connected with load by zero axle; Zero axle is connected with an impeller disk by steering wheel, by gear, with another impeller disk, is connected, and by oil pipe, with solenoid directional control valve, is connected; Described solenoid directional control valve is in series by valve plate and proportional flow control valve, and solenoid directional control valve passing ratio flow valve is in parallel with by pass valve; One end of described microprocessor is connected with pressure sensor, and the other end is connected with proportional flow control valve, solenoid directional control valve;
2) power of input is defeated by respectively on the driving wheel pump impeller of conjuncted pump motor and impeller disk; Reach and be more than or equal to 200bar at conjuncted pump motor high-pressure, impeller disk participates in outputting power, servo-steering; At conjuncted pump motor high-pressure, reach lower than 150bar, impeller disk is outputting power not, exits and turns to;
3) impeller disk turns to by zero axle boost pump motor, during left steering, and the impeller disk power-assisted connected by steering wheel; During right steering, by another impeller disk power-assisted of gear; While turning to, produce high pressure and low pressure oil way, and steering direction is corresponding with high pressure, low pressure distribution on two oil circuits, microprocessor gathers high pressure, low pressure signal, and decision-making goes out the Vehicular turn direction;
4), when the on high-tension side pressure of conjuncted pump motor lower than 80bar the time, microprocessor output control signal is closed solenoid directional control valve; When the on high-tension side pressure of conjuncted pump motor surpasses 80bar, microprocessor outputs a control signal to according to the steering direction of vehicle the opening direction that solenoid directional control valve is controlled electromagnetic valve, and then controls which impeller disk and prepare to participate in power-assisted;
5) when the pump motor pressure surpasses 200bar, microprocessor is according to the control policy of proportional flow control valve, the opening of control ratio flow valve.
2. the quiet hydrodynamic of continuously tracked vehicle according to claim 1 is compound turns to sluggish control method, it is characterized in that described conjuncted pump motor is comprised of pump, swash plate and motor; Described oil pipe is the connected pipes on conjuncted pump motor, and pressure sensor is arranged on the oil-feed oil circuit of conjuncted pump motor and on oil return circuit, to record high pressure and low pressure.
3. the quiet hydrodynamic of continuously tracked vehicle according to claim 1 is compound turns to sluggish control method, it is characterized in that described microprocessor is micro controller system.
4. the quiet hydrodynamic of continuously tracked vehicle according to claim 1 is compound turns to sluggish control method, it is characterized in that proportional flow control valve and solenoid directional control valve are arranged on same valve plate, the three is combined into a valve group, and the valve group is provided with oil-feed hydraulic fluid port, fuel-displaced hydraulic fluid port and oil return hydraulic fluid port.
5. the quiet hydrodynamic of continuously tracked vehicle according to claim 4 is compound turns to sluggish control method, the oil-feed hydraulic fluid port that it is characterized in that the valve group is that external pump is to valve group fuel feeding, and limit charge oil pressure with a by pass valve, when proportional flow control valve is opened, the oil of feed cock group consists of working oil by valve and enters into impeller disk, makes impeller disk participate in servo-steering, and unnecessary oil is got back to fuel tank by the return opening of valve plate, when proportional flow control valve is closed, the fuel feeding of system is by the direct oil sump tank of valve plate return opening.
6. the quiet hydrodynamic of continuously tracked vehicle according to claim 4 is compound turns to sluggish control method, it is characterized in that oil return circuit realized by the combination of Multi-oil circuit valve plate.
7. the quiet hydrodynamic of continuously tracked vehicle according to claim 3 is compound turns to sluggish control method, it is characterized in that described micro controller system is 8051 micro controller systems.
8. turn to sluggish control method according to the quiet hydrodynamic of the described continuously tracked vehicle of claim 4 or 6 is compound, it is characterized in that described valve plate is for establishing vittate No. 45 steel plates.
9. the quiet hydrodynamic of continuously tracked vehicle according to claim 1 is compound turns to sluggish control method, it is characterized in that the control policy of described proportional flow control valve is for dropping to the 150bar process from 200bar when the pump motor pressure, the opening of proportional flow control valve is 20%, when the pump motor pressure, lower than 150bar the time, proportional flow control valve is closed.
10. the quiet hydrodynamic of continuously tracked vehicle according to claim 1 is compound turns to sluggish control method, it is characterized in that described opening is 20%-100%.
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| CN 201110047935 CN102152811B (en) | 2011-02-28 | 2011-02-28 | Method for controlling static and dynamic liquid composite steering delay of caterpillar |
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| CN 201110047935 CN102152811B (en) | 2011-02-28 | 2011-02-28 | Method for controlling static and dynamic liquid composite steering delay of caterpillar |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341859Y (en) * | 1998-04-21 | 1999-10-06 | 阜新液压件厂 | Variable power-assisted steering pump for automobile |
| US6176342B1 (en) * | 1998-06-19 | 2001-01-23 | Trw Inc. | Vehicle steering apparatus |
| CN101011980A (en) * | 2007-02-26 | 2007-08-08 | 扬州扬子江柴油机配件厂 | Motor-driven control device for hydraulic power-assisted steering system |
| CN201023524Y (en) * | 2007-03-13 | 2008-02-20 | 上海交大神舟汽车设计开发有限公司 | Hydraulic hybrid power bus auxiliary power steering unit |
-
2011
- 2011-02-28 CN CN 201110047935 patent/CN102152811B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341859Y (en) * | 1998-04-21 | 1999-10-06 | 阜新液压件厂 | Variable power-assisted steering pump for automobile |
| US6176342B1 (en) * | 1998-06-19 | 2001-01-23 | Trw Inc. | Vehicle steering apparatus |
| CN101011980A (en) * | 2007-02-26 | 2007-08-08 | 扬州扬子江柴油机配件厂 | Motor-driven control device for hydraulic power-assisted steering system |
| CN201023524Y (en) * | 2007-03-13 | 2008-02-20 | 上海交大神舟汽车设计开发有限公司 | Hydraulic hybrid power bus auxiliary power steering unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102152811A (en) | 2011-08-17 |
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