CN102207109A - Electrohydraulic control system based on built-in air sac hydraulic tank - Google Patents

Abstract

The invention relates to an electrohydraulic control system based on a built-in air sac hydraulic tank, which is characterized in that: the system is based on the built-in air sac hydraulic tank, and the principle of the air sac hydraulic tank is that hydraulic pressure is stored in a mode of storing air pressure; a built-in pressure storage air sac is arranged in the air sac hydraulic tank, a material named a pressure storage agent is injected into the air sac, and saturated vapor pressure in the air sac is quasi-constant pressure; and a control device CKZZ in the control system consists of an operator, a sensor, a converter, a signal processor, the air sac hydraulic tank, an electromagnetic valve and an actuator to form an air sac hydraulic tank type brake, accelerator, steering and clutch control device.

Description

A kind of electro-hydraulic control system based on internal airbag formula hydraulic tank

Technical field: the present invention is a kind of electro-hydraulic control system based on internal airbag formula hydraulic tank, belongs to Hydraulic Power Transmission System and electronic technology electric equipment control system field.

Background technique: in the mechanically movings such as automobile, all will use clutch, break, throttle, commutator.Present automobile brake power-assisted and power steering all will depend on the state of motor, just can produce power-assisted when having only engine operation, and power-assisted just disappears during engine misses, can make braking weak, turn to very heavyly, even can cause traffic accident thus.It is a kind of good method that clutch, break, commutator, throttle are adopted hydraulic driving, engine misses also can proper functioning also can produce very big driving force, but hydraulic driving faces a difficulty at present, be exactly because liquid incompressible, so hydraulic pressure can't store, when needs are used hydraulic driving, need the primer fluid press pump, instead would not be very timely, and need the pump that power is bigger, so that can produce enough hydraulic pressure rapidly.

Manual-gear vehicle all will be used clutch.When clutch pedal is stepped on, the friction plate of driving wheel and the friction plate of follower are separated, suspend transferring power, this action is hereinafter to be referred as " separation ", when clutch pedal unclamps when lifting, the friction plate of driving wheel and the friction plate of follower is compacted fits together can transferring power, and this moves hereinafter to be referred as " applying ".At present Clutch Control is realized by driver's stepping on clutch pedal, will use both hands and feet when operations such as gearshift, goes back when GPRS descends the abrupt slope well and the certain operations main points such as can not step on, will slowly lift when lifting pin; Also to coordinate control, not do a good job in just to stop working, certain degree of difficulty is arranged, keep off a car, even oil consumption many tens percent also is ready so a lot of people would rather open automatically.

The objective of the invention is to design the hydraulic tank that a kind of pressure can be stored, as long as a lower-powered pump just can be kept the enough hydraulic pressure of hydraulic tank, based on this hydraulic tank, design control corresponding system, realize electrical signal control machinery action, control opening and closing of each solenoid valve, the pressure liquid in the hydraulic tank drives corresponding oil hydraulic cylinder, thereby drives clutch, break, commutator, throttle, aircraft evelvator or the like (being defined as " control device CKZZ ") action.

For clutch, constitute the electric-controlled type clutch system, simplify driver's operation, need not use foot accelerator clutch, just when gearshift, just be equivalent to step on clutch by next button, and slowly fit by system's solenoidoperated cluthes, need not grasp and the certain operations main points such as when can not step on, will slowly lift when lifting pin, because these main points are given control system and finished;

For braking, throttle with turn to, constitute electrically controlled brake, steering system, engine misses no longer damage braking and power steering, and hydraulic booster can also be strengthened greatly.

Terse in order to narrate, this paper will progressively define some specific term definition, definition earlier: " control device CKZZ " is any one in clutch, break, commutator, throttle, aircraft evelvator or the like device; " control system CKXT " is the set of all control device.

Inventive principle is described:

A kind of electro-hydraulic control system based on internal airbag formula hydraulic tank.It is characterized in that: it is characterized in that: the basis of this system is internal airbag formula hydraulic tank (being designated hereinafter simply as " bag pressure jar "), and the principle of bag pressure jar is to come stores hydraulic pressure with the mode that stores air pressure; A built-in storage pressuring gasbag is arranged in the bag pressure jar, inject a kind of material that agent is pressed in storage that is called in the air bag, this air bag is constant voltage when temperature-resistant, when oil hydraulic pump during to the bag pressure filling liquid, as long as hydraulic pressure surpasses air bag air pressure, just air bag can be flattened, pressure liquid is all filled with in the place except that air bag in the bag pressure jar; When the outside work done of pressure liquid, the pressure of pressure liquid is that the saturation vapor pressure in the air bag provides, and this is an accurate constant voltage, in other words, stored a pressure tank liquid in the bag pressure jar, its pressure equals storage and presses the agent saturation vapor pressure, forms an accurate constant voltage bag pressure jar that pressure is higher; With the bag pressure jar is core, is the periphery with oil hydraulic pump, safety check, stock solution tube, constitutes bag pressure jar module.

Control device CKZZ in the control system is made up of operator, sensor, transmitter, signal processor, bag pressure jar, solenoid valve, final controlling element; The driver converts a demand to the operation amplitude of certain control device to by sensor and transmitter, after signal processor processes, send electromagnetic valve signal (hereinafter to be referred as valve control signal), control final controlling element in cylinder pressure increase or reduce, thereby the variation of control execution amount makes the execution amount follow the variation of demand and change; Difference according to valve control signal has three kinds of actions, and a kind of is that fluid-delivery valve is opened and liquid discharging valve is closed, and by bag pressure jar oil hydraulic cylinder injection pressure liquid in final controlling element, the hydraulic pressure that this has just increased oil hydraulic cylinder increases the execution amount; A kind of be fluid-delivery valve close and liquid discharging valve open-minded, just reduced the hydraulic pressure of oil hydraulic cylinder, the execution amount is reduced; A kind of is that fluid-delivery valve is closed and liquid discharging valve is closed, and has just kept the hydraulic pressure of oil hydraulic cylinder, and the execution amount is kept;

The Main physical performance that outstanding storage presses agent to possess is: have in operating temperature range and satisfy saturation vapor pressure that working pressure requires and saturation vapor pressure excursion not quite (hereinafter to be referred as the constant voltage that is as the criterion) when temperature variation; In theory, saturation vapor pressure is that the storage of 0.12-100MPa presses agent to use in operating temperature range, but presses agent as the storage of native system, for 0.3-2MPa more reasonable; Because this is a problem that has just proposed, what also do not have relevant data and determine to adopt material to serve as storage to press agent ideal, at present, ammonia, sulfur dioxide, R11, R12, R22, the physical property of refrigeration agents such as R134 is pressed the desired performance of agent near storage, can serve as storage for the time being and press agent, when being-10 ℃～50 ℃ such as temperature range as R12, the saturation vapor pressure scope is 0.8-1.3MPa, storage is pressed agent to become gaseous state by liquid state and is absorbed heat in the air bag, temperature is a little descended, so saturation vapor pressure can a little descend thereupon, but angle from engineering machinery, this point point changes and can ignore, so saturation vapor pressure is accurate constant voltage.

Embodiment and description of drawings combine and are described

Some explanation:

◆ in the accompanying drawing number, the several very closely figure of association are placed in the same chief editor number, as: Fig. 5 .1, Fig. 5 .2, Fig. 5 .3, Fig. 5 .4, represent that these a few width of cloth figure relations are very tight, a lot of identical or relevant contents are arranged.

◆ because the final controlling element of all operations device of the present invention is a driving force with the bag pressure jar all, all be " based on the * * * * * * * * device of bag pressure jar ", so can be called for short " * * * * * * * * device ".

◆ the same label that occurs among a plurality of figure, only explanation when occurring for the first time has in a lot of figure as " ZYG ", only explanation in Fig. 1 .2 explains;

◆ in the solenoid valve graphic symbol, rectangle frame is represented electronic device (comprising electromagnet or motor), and two triangles are represented valve body;

◆ some element with dashed lines frames of finishing certain function surround a functional block, and write out the title of this functional block in a rectangle frame, just with directly quoting, are called * * module later on.

◆ sensor is the most numerous and diverse part, and all with capitalization C beginning, the demand sensor starts with CX the sensor label, and the driven quantity sensor starts with CQ, and the sensor general name starts with CG.

◆ all with capitalization B beginning, the demand transmitter starts with BX the transmitter label, and the driven quantity transmitter starts with BQ, and the transmitter general name starts with BS.

◆ if V is a high petential, can represent with V=1; If V is a zero potential, can represent with V=0.

◆ work as δ ₁＞Vxq＞(δ ₂) time, or | during Vx-Vq|＜δ, expression driven quantity and demand are near equating, hereinafter referred to as " Vx and Vq reach balance ".

◆ in-phase input end is called for short in-phase end, and inverting input is called for short end of oppisite phase.

◆ clutch, break, commutator, throttle, elevator or the like device, these devices are referred to as final controlling element.In native system, final controlling element comprises switching value final controlling element and analog amount final controlling element two classes, the switching value final controlling element has only clutch, the analog amount final controlling element comprises: break, commutator, throttle, lift device, their operation amount all is the big or small analog amount that need gradually change, for easy, below the analog amount final controlling element is referred to as driver, its control circuit is called driver control circuit, various analog amount drive assemblies are collectively referred to as bag pressure pot type drive assembly, the driver oil hydraulic cylinder abbreviates oil hydraulic cylinder as, and the clutch fluid cylinder pressure is write full name.

Embodiment 1: bag pressure jar and working principle thereof

Fig. 1 .1 and Fig. 1 .2; Specific explanations is as follows:

Fig. 1 .1 is a bag pressure jar fundamental diagram.With NYG (meaning is " a bag pressure jar ") presentation graphs 1.1, NYG is the basis of " based on the electro-hydraulic control system of bag pressure jar " in the subsequent figures, and wherein, the agent inlet is pressed in the ZYK-storage; The XYC-liquid-adsorption layer is spongy hard layer, and its effect is to exert pressure to air bag is comprehensive by guide pressure liquid, were it not for oil absorbent blanket, and when air bag was close to tank skin, pressure liquid can't be exerted pressure to air bag is comprehensive; GB-bag pressure jar tank skin; The QN-air bag; Agent is pressed in the CYJ-storage; The DB-perforated baffle avoids air bag to stop up liquid entering hole and liquid outlet; YLY-pressure liquid; The CY-liquid outlet; The JY-liquid entering hole; KP1-air bag status switch, when air bag was crushed, KP1 disconnected, when pressure liquid is discharged to a certain amount ofly when air bag is strutted, KP1 connects, make (among Fig. 1 .2) liquid pump PE starting, give NYG supplementary pressure liquid, position limit switch and pressure switch can realize this function.

The method that drives oil hydraulic pump PE has two classes, one class is a motoring, and when pressure liquid was very full, air bag was compressed fully, pressure switch KP1 is cut off, the motor of oil hydraulic pump PE does not change, and when pressure liquid is discharged to a certain amount ofly, (air bag struts 1/2,1/3, and still to be other value be supplementary view when making air bag strut " supplementary view ", to determine according to design and test), pressure switch KP1 connects, and the motor operation of oil hydraulic pump is to bag pressure jar supplementary pressure liquid; Another kind of is engine-driving, when pressure liquid was very full, air bag was compressed, and pressure switch KP1 is cut off, make " oil hydraulic pump clutch " PELH be in separated state, motor can not drive oil hydraulic pump PE running, when pressure liquid be discharged to a certain amount of, when making air bag strut " supplementary view ", pressure switch KP1 connects, make the oil hydraulic pump clutch be in fit-state, motor drives oil hydraulic pump PE running, to bag pressure jar supplementary pressure liquid.

Fig. 1 .2 is the block diagram of " based on the electro-hydraulic control system of bag pressure jar ".NYG-bag pressure jar, the ZHF-safety check; The PE-oil hydraulic pump is to the NYG fluid injection; The CYT-stock solution tube stores the pressure liquid that flows back to; The ZYG-filling tube, the incoming road of all cylinder pressure liquid; The PYG-liquid-discharging tube, the reflux line of all oil hydraulic cylinder head pressure liquid.

CKZZa-control device a (left steering control device); CZFDa-operation amplitude a (left-hand rotation operation amplitude); QDGa-driveshaft a, (left steering driveshaft);

CKZZb-control device b (right steering control device), CZFDb-operation amplitude b (right-hand rotation operation amplitude), QDGb-driveshaft b (right steering driveshaft),

Rising/decline is controlled and is controlled identically with left steering/right steering, does not give unnecessary details.

CKZZd-clutch control device, LHCZ-clutch operation, the LHG-trip(ping) lever,

CKZZ-brakes control device, CZFD-brake operating amplitude, and QDG-brakes driveshaft,

The CKZZf-accelerator control device, CZFDf-throttle operation amplitude, QDGf-throttle driveshaft,

The fluid injection solenoid valve and the draining solenoid valve (hereinafter to be referred as fluid-delivery valve and liquid discharging valve) that all include control circuit, oil hydraulic cylinder, oil hydraulic cylinder in each control device, when making fluid-delivery valve, opens and liquid discharging valve when closing by control circuit, pressure raises in the oil hydraulic cylinder, its piston is by past extrapolated, and the execution amount strengthens; Close and liquid discharging valve when opening when fluid-delivery valve, pressure reduces in the oil hydraulic cylinder, and its piston is pushed back toward in by spring, and the execution amount reduces; When fluid-delivery valve and liquid discharging valve were all closed, pressure was kept in the oil hydraulic cylinder, and its piston is static, and the execution amount is maintained the statusquo.

In these several control device, having only clutch operation is switching mode operation (the i.e. amount of controlling or be to separate, be to fit), if the operational requirements amount LHCZ that the driver provides is a separation command, after clutch control device CKZZd processing, can eject fully by control trip(ping) lever LHG, make clutch separation; If the LHCZ that the driver provides is the instruction of fitting, after clutch control device CKZZd processing, can control trip(ping) lever LHG and return fully, clutch is fitted.

Except that the clutch control device is the action of switching mode, other several control device all are the control device of analogue type (promptly the size of the amount of controlling can gradually change), during such as braking, the distance that the driver steps on brake petal is exactly the size of brake operating amplitude CZFD, after CZFD handles through CKZZ, the displacement distance of control QDG makes it be directly proportional with the size of CZFD.Equally, after the driver has provided a certain size operation amplitude demand (comprising CZFDa, CZFDb, CZFDf), processing through pairing control device (CKZZa, CKZZb, CKZZf), can control the displacement distance of pairing driveshaft (QDGa, QDGb, QDGf), its size with pairing operation amplitude demand is directly proportional.

W3f-throttle quick fluid-discharge valve, the Vxx-brake control signal.When Vxx was high petential, brake petal had been stepped in expression, need close throttle rapidly, so Vxx opens the quick oil drain quantity of W3f, throttle driveshaft QDGf is return rapidly.

The frame of broken lines of NYMK is a bag pressure jar module, the NYG-bag pressure jar that dotted line surrounded, KP1-air bag status switch, ZHF-safety check, PE-liquid pump, the CYT-stock solution tube, CY-drain pipe, JY-liquid inlet pipe, these elements merge and claim NYMK, (bag pressure jar module is all arranged among Fig. 2 .1 of back, Fig. 3 .1, Fig. 5 .4, illustrates in the lump) at this.

Embodiment 2: bag pressure pot type basic model control device (being called for short bag pressure pot type control device), and the braking of bag pressure pot type, throttle, steering manipulation device have only some variations in detail based on basic model control device principle; Particularly because the working principle of braking device, separated the steering gear is consistent with basic model control device basic principle, so should example be again double do bag pressure pot type braking device and the explanation of separated the steering gear; Linking type the steering gear and accelerator device have adjustment for a short time on basic model.

Embodiment 2 combines by Fig. 2 .1 and Fig. 2 .2 and makes an explanation; Specific explanations is as follows:

Fig. 2 .1 is the basic principle block diagram of bag pressure pot type basic model (braking of holding concurrently, separated turn to) control device.

Bag pressure pot type basic model control device comprises control device CK, demand sensor CX, demand transmitter BX, processing circuit CL, fluid-delivery valve W1, liquid discharging valve W2, oil hydraulic cylinder YYG, driven quantity sensor CQ, driven quantity transmitter BQ and bag pressure jar module NYMK; Wherein processing circuit module CL full name is electromagnetic valve signal (brake signal, a turn signal) processing circuit, is made up of difference amplifier CF, fluid injection threshold circuit YZ1 and discharge opeing threshold circuit YZ2, fluid injection power magnification circuit GF1 and discharge opeing power magnification circuit GF2; By Fig. 2 .2 as can be known, one of circuit of CF is to constitute difference amplifier by integrated operational amplifier AR and resistance R 5, R6, R7, R8, and demand Vx and driven quantity Vq are respectively from in-phase end and end of oppisite phase input.

Fluid injection threshold circuit YZ1 is made of D1 and voltage-stabiliser tube D3, and discharge opeing threshold circuit YZ2 is made of D2 and voltage-stabiliser tube D4, and fluid injection power magnification circuit GF1 connects into emitter-follower by T1 and constitutes, and discharge opeing power magnification circuit GF2 connects into emitter-follower by T2 and constitutes; One of circuit that just constitutes CF, YZ1, YZ2, GF1, GF2 that more than exemplifies, the circuit that constitutes CF, YZ1, YZ2, GF1, GF2 is too numerous to enumerate.The CK-control device; CX-demand sensor; BX-demand transmitter.Definition: oil hydraulic cylinder YYG=piston HS+ spring TH+ cylinder sleeve GT+ driveshaft QDG.

Embodiment 2 describes the principle of bag pressure pot type basic model control device in conjunction with Fig. 2 .1 and Fig. 2 .2, the principle of used bracket (braking * *, turn to * *) additional disclosure simultaneously braking device and the steering gear.Each driver is by the hydraulic driving in the corresponding oil hydraulic cylinder separately, and the working principle of these oil hydraulic cylinders is identical, below merges and is called the driver oil hydraulic cylinder.

The basic principle of bag pressure pot type basic model control device: (among Fig. 2 .1) driver is converted into voltage Vx ' to the operation amplitude CZFD (braking amplitude, steering angle) of control device CK by demand sensor CX; The excursion of voltage Vx ' generally is the requirement that does not meet system, so voltage Vx ' is adjusted into voltage Vx in Fig. 2 .3 with demand transmitter BX (BX explains), Vx is " driving amplitude demand signal ", in braking device, Vx is " a braking amplitude demand signal ", all abbreviate " demand Vx " as, and the excursion of Vx depends on the critical field of this system's defined, in theory, excursion through transmitter conversion back Vx can be (the subrange arbitrarily in the scope of U～U), so this critical field is to determine according to artificer's needs, the present invention regulation: the excursion of basic model control device Vx is that (0～Vxm), Vxm is the upper limit (0＜Vxm＜U) of Vx; Equally, driving amplitude is converted into voltage Vq ' by driven quantity sensor CQ; The excursion of voltage Vq ' generally is the requirement that does not meet system, so voltage Vq ' is adjusted into voltage Vq in Fig. 2 .3 with driven quantity transmitter BQ (BQ explains), Vq is " a driving amplitude execution amount signal ", in braking device, Vq is " a braking amplitude execution amount signal ", abbreviate " driven quantity Vq " as, and the excursion of Vq depends on the critical field of this system's defined.

Vx is the signal that the driver provides, and is active signal; Vq is the signal that driver provides, and is controlled volume signal (being driven signal); Demand-driven quantity=principal and subordinate's signal difference, or Vx-Vq=Vxq (wherein Vxq is exactly principal and subordinate's signal difference).

If δ is according to the determined anti-interference current potential of system requirements.For anti-interference, introduce anti-interference current potential δ ₁(δ ₂).The effect of control device is exactly to make driven quantity Vq follow demand Vx to change in essence, makes δ ₁＞Vxq＞(δ ₂), concrete analysis has following three state:

1, driven quantity is kept state.When operation amplitude is constant, indicate to keep current amplitude, (such as, when keeping throttle big or small, indicate to keep current driven quantity), Vx and Vq can be in a kind of equilibrium state, and the absolute value of Vxq can be smaller, and Vxq maintains δ ₁＞Vxq＞(δ ₂) in the scope, being lower than the threshold value of opening of threshold circuit YZ1 and YZ2, power amplifier GF1 and GF2 end, and fluid-delivery valve and liquid discharging valve are all closed, and keep the hydraulic pressure of oil hydraulic cylinder;

2, driven quantity increases state.When operation amplitude increases, indicate to increase current amplitude, (such as, when opening the throttle, indicate to increase driven quantity), Vx increases, and makes Vxq＞δ ₁, being higher than the threshold value of opening of threshold values circuit YZ1, power amplifier GF1 saturation conduction and GF2 ends is opened fluid-delivery valve (liquid discharging valve is closed), and the pressure liquid in the bag pressure jar improves the hydraulic pressure of oil hydraulic cylinder to the oil hydraulic cylinder fluid injection, and driven quantity Vq increases thereupon, and Vxq is decreased to＜δ ₁, at this moment satisfy δ again ₁＞Vxq＞(δ ₂), enter driven quantity and keep state, fluid-delivery valve and liquid discharging valve are all closed, keep the hydraulic pressure of oil hydraulic cylinder;

3, driven quantity reduces state.When operation amplitude reduces, indicate to reduce current amplitude, (such as, when reducing throttle, indicate to reduce driven quantity), Vx reduces, and makes Vxq＜(δ ₂), being higher than the threshold value of opening of threshold circuit YZ2, power amplifier GF2 saturation conduction and GF1 ends is opened liquid discharging valve (fluid-delivery valve is closed), to the oil hydraulic cylinder discharge opeing, reduces the hydraulic pressure of oil hydraulic cylinder, and driven quantity Vq decreases, and Vxq increases to＞(δ ₂), at this moment satisfy δ again ₁＞Vxq＞(δ ₂), enter driven quantity and keep state, fluid-delivery valve and liquid discharging valve are all closed, keep the hydraulic pressure of oil hydraulic cylinder;

Two problems that remark additionally are: 1. why δ will be set ₁(δ ₂)? this is in order to improve antijamming capability, if do not want δ ₁(δ ₂), just make δ ₁=(δ ₂)=0, can make solenoid valve repeatedly break-make beat and do not stop.Be analyzed as follows: as Vx＞Vq, system's meeting (make fluid-delivery valve is held, liquid discharging valve close) is boosted to the oil hydraulic cylinder fluid injection, can make Vq be increased to Vx＜Vq at once; At this moment system's meeting (making fluid-delivery valve pass, liquid discharging valve hold) from oil hydraulic cylinder discharge opeing step-down, can make Vq be reduced to Vx＞Vq again at once; Beat so repeatedly, fluid-delivery valve and liquid discharging valve also will be beated and damage easily thereupon break-make repeatedly, so will adopt interference protection measure, δ are set ₁(δ ₂); As δ=δ ₁=(δ ₂) time, system must be feasible | Vx-Vq|＜δ.2. demand signal Vx and execution amount signal Vq are the signals from two sensor samples in two places, need make two signals near linear relationship with transmitter, and both maximum values and minimum value be correspondent equal all, realize Vxm=Vqm, Vxmin=Vqmin, (wherein Vxm is that the maximum value of Vx, the maximum value that Vqm is Vq, minimum value, the Vqmin that Vxmin is Vx are the minimum value of Vq).In addition, signal of sensor and measured relation are linear to be optimal, but in fact is difficult to idealize, in order to reduce nonlinearity erron, the demand sensor adopts identical or similar sensor with the driven quantity sensor as far as possible, such as, both are adopts pressure sensor simultaneously.

After obtaining fluid injection control signal V1, discharge opeing control signal V2 by CL, V1, V2 are collectively referred to as valve control signal, control fluid injection and the discharge opeing action of fluid-delivery valve W1 and liquid discharging valve W2 respectively, the hydraulic pressure of control oil hydraulic cylinder YYG, the high more then piston of hydraulic pressure HS is big more to the pressure of the spring TH among the cylinder sleeve GT, and driveshaft QDG just ejects long more outward; So one of method of the displacement amount of detection driveshaft is to detect the hydraulic pressure size of oil hydraulic cylinder with pressure transducer, two of method is to detect the displacement (seeing the explanation of Fig. 6 .1-6.5) of driveshaft, just can know the displacement amount of driveshaft, two kinds of detecting method unifications are represented with driven quantity sensor CQ, be transformed into driven quantity Vq by detected signal through amount of overdrive transmitter BQ, feed back to the input end of difference amplifier CF, CF carries out the difference amplification to demand Vx and driven quantity Vq.

Fig. 2 .2 is the circuit theory diagrams of bag pressure pot type braking device, after removing (being constituted) brake signal frame of broken lines ZD by T3, AZ, Rd, Re, KA2 and brake signal Vxx, be exactly the circuit theory diagrams of bag pressure pot type basic model control device, this is embodiment 2 a physical circuit schematic diagram.

Circuit working principle: after the operation amplitude CZFD process demand sensor CX detection of driver to control device CK, obtain sampled signal Vx ', after demand transmitter BX conversion, obtain demand Vx, Vx and Vq import from in-phase end and the end of oppisite phase of difference amplifier CF respectively, CF is made of integrated operational amplifier AR and resistance R 5, R6, R7, R8, make Vxq=Vx-Vq, R5=R6, R7=R8, the output voltage of AR are Vr, then Vr=Av*Vxq, Av is a voltage amplification factor in the formula, Av=R7/R5.

The difference input amplifying circuit is exactly that the difference of demand Vx and driven quantity Vq is amplified, and promptly principal and subordinate's signal difference Vxq is amplified.If the voltage stabilizing value of voltage-stabiliser tube D3 and D4 is Vw, make δ ₁=δ ₂=δ=Vw/Av.When | Vxq|＜δ, Vx and Vq reach balance; When | Vxq|＞δ, Vx and Vq have big difference, and Vq is drawn close to Vx.

1, increase as demand Vx, when making Vxq＞δ, Vx-Vq＞δ, the expression driven quantity is less than normal, should strengthen driven quantity.It is as follows that driven quantity increases process: (noticing Vr=Av*Vxq, Vw=Av* δ)

When Vxq＞δ, (Vr=Av*Vxq＞Av* δ=Vw), i.e. Vr＞Vw are arranged, reference diode D3 as the fluid injection threshold circuit is breakdown, power tube T1 saturation conduction, V1=1 (being that fluid injection control signal V1 is a high petential), fluid-delivery valve W1 is open-minded, oil hydraulic cylinder YYG fluid injection in Fig. 2 .1; Simultaneously, during Vr＞Vw, power tube T2 ends, V2=0 (being that discharge opeing control signal V2 is a zero potential), and liquid discharging valve W2 closes.The V1=1 fluid-delivery valve is opened and the V2=0 liquid discharging valve is closed, and has just increased the hydraulic pressure of oil hydraulic cylinder, has increased driven quantity Vq, makes Vxq＜δ, and Vx and Vq reach balance.

2, reduce as demand Vx, make | during Vx-Vq|＞δ, promptly Vxq＜(δ) time, Vx-Vq＜(δ), the expression driven quantity is bigger than normal, should reduce driven quantity.Process is as follows:

As Vxq＜((Vr=Av*Vxq＜Av* (δ)=(Vw)), Vr＜(Vw) δ) time, is arranged, reference diode D4 as the discharge opeing threshold circuit is breakdown, power tube T2 saturation conduction, V2=1, liquid discharging valve W2 is open-minded, make oil hydraulic cylinder YYG discharge opeing among Fig. 2 .1, simultaneously, Vr＜(Vw) time, power tube T1 ends, V1=0, fluid-delivery valve W1 closes.The V1=0 fluid-delivery valve is closed and the V2=1 liquid discharging valve is open-minded, has just reduced the hydraulic pressure of oil hydraulic cylinder, has reduced driven quantity Vq, makes that Vxq＞(δ), Vx and Vq reach balance.

3, when demand Vx approximate constant, and δ＞Vxq＞(δ) time, | Vx-Vq|＜δ, expression driven quantity and demand are approaching, should keep driven quantity.The driven quantity maintenance process is as follows:

When δ＞Vxq＞(δ) time, Vr=Av*Vxq＜Av* δ=Vw, Vr＜Vw, D3 can be not breakdown, and T1 ends, V1=0, fluid-delivery valve W1 closes; Simultaneously, Vr=Av*Vxq＞Av* (δ)=(and Vw), Vr＞(Vw), D4 can be not breakdown yet, and T2 ends, V2=0, and liquid discharging valve W2 closes.The V1=0 fluid-delivery valve is closed and the V2=0 liquid discharging valve is closed, and then oil hydraulic cylinder is kept current hydraulic pressure, and driven quantity is kept, and Vx and Vq keep balance.

Sketching, is that three kinds of states are arranged:

A kind of is to increase as demand Vx, when making Vxq＞δ, and Vr＞Vw, obtain V1=1 and V2=0 through the CL processing, fluid-delivery valve W1 opens and liquid discharging valve W2 closes, and has just increased the hydraulic pressure of oil hydraulic cylinder, driven quantity Vq is increased, and Vxq is decreased to Vxq＜δ, and Vx and Vq reach balance.

A kind of is to reduce as demand Vx, make Vxq＜(δ) time, Vr＜(Vw), handle to obtain V1=0 and V2=1 through CL, fluid-delivery valve W1 close and liquid discharging valve W2 open-minded, just reduced the hydraulic pressure of oil hydraulic cylinder, driven quantity Vq is reduced, and Vxq increases to that Vxq＞(δ), Vx and Vq reach balance.

A kind of be when demand Vx approximate constant, and δ＞Vxq＞(δ) time, Vw＞Vr＞(Vw), obtain V1=0 and V2=0 through the CL processing, fluid-delivery valve W1 closes and liquid discharging valve W2 closes, and has just kept the hydraulic pressure of oil hydraulic cylinder, driven quantity is kept, and Vx and Vq keep balance.

The 4th kind of state is V1=1 and V2=1, fluid-delivery valve W1 open and liquid discharging valve W2 open-minded, this is the state that can not occur on this circuit, because Vr can not have Vr＞Vw and Vr＜(Vw) simultaneously.

Supplemental instruction: D5 (D6) is a fly-wheel diode, when T1 (T2) by saturated become by the time, the coil of W1 (W2) and D5 (D6) constitute the loop, and the energy in W1 (W2) coil is discharged as early as possible.C1 and C2 can filtering interference signals; T1 and T2 are an example of power amplifier, and power magnification circuit is a lot, and as ordinary circumstance, the GF1 of with dashed lines frame and GF2 represent all power magnification circuits;

Among Fig. 2 .2, operation amplitude (promptly braking amplitude, steering angle) CZFD imposes on control device CK, and control device CK can be a brake petal, also can be to use manual break; The displacement amount of control device is detected by demand sensor CX, the generation amount of the controlling current potential Vx ' that demand sensor CX is directly proportional according to the amount of displacement of control device CK, after transmitter BX adjustment, become operation amplitude demand Vx, Vx and driven quantity Vq are input to processing circuit KZDL (by differential amplifier circuit, threshold circuit, power magnification circuit is formed), obtain valve control signal V1 and V2, control fluid-delivery valve W1 and liquid discharging valve W2 open/close, thereby the pressure of control oil hydraulic cylinder YYG, the high more then piston of hydraulic pressure HS is big more to the decrement of spring TH, piston HS and driveshaft QDG eject many more, and promptly driven quantity Vq is big more; The sampling of driven quantity Vq and adjustment are to be obtained by CB, and CB is used to detect the size of driven quantity, are made of driven quantity sensor and transmitter two-part; GT is the oil hydraulic cylinder cylinder sleeve.QDG, HS, TH and GT are collectively referred to as YYG, and CK, CX, BX, CL, YYG, W1, W2 and CB are collectively referred to as control device CKZZ.

The explanation of brake signal module ZD (frame of broken lines of a mark ZD): the in-phase end of comparator AZ inserts a very little anti-interference positive potential Ve by divider resistance Rd and Re, make braking requirement amount signal Vx=0～Vxmax, when Vx＜Ve, Dz=(U), triode T3 ends, brake signal Vxx is the low potential current potential, when Vx＞Ve, Dz=+U, triode T3 is saturated, and brake signal Vxx becomes high petential, at this moment can produce two effects, one is to make accelerator control device lose oil (referring to embodiment 3 explanation) fast, and one is to make clutch separation.If there is not anti-interference positive potential Ve, make the direct ground connection of AZ in-phase end, when having a bit to disturb, demand Vx will produce " mistake brake signal ".

The supplemental instruction of transmitter BS: Fig. 2 .3 is one of circuit diagram of transmitter.Integrated operational amplifier AG is connected into voltage follower circuit and serves as input stage, the sampled signal Vg ' that sensor is sent here (Vg ' be Vx ' or Vq ') through behind the AG, AG output terminal current potential still is Vg ', but voltage follower circuit can make input resistance very big, output resistance is very little, promptly the become electric current asked for to sensor CG (CG is CX or CQ) is very little, and level provides the load capacity of signal to strengthen backward; Integrated operational amplifier AB is connected into a difference amplifier, from the signal of end of oppisite phase resistance R 1 input is benchmark regulated signal Vt, make Vx value upper and lower translation, the signal of importing from in-phase end resistance R 2 is sensor sample signal Vg ', obtains demand Vg (Vg is Vx or Vq) after amplifying through difference.That is to say that Vg is the signal after Vx or Vq process translation and the amplification.For example, the excursion of Vg ' is 2～6V, be adjusted into the excursion (10～10V) of Vg, magnification factor=20/ (6-2)=5, iff being to amplify 5 times, 2～6V has become 10～30V so, if integral body has just become after moving down 20V-10～10V, make Vt=4V and regulate variable resistor Rt, can make output signal integral body move down 20V.Vt should stablize as regulating benchmark, so adopted the voltage stabilizing measure, three sections regulator block 78** of 78 series provide positive potential voltage stabilizing (such as the positive 5V regulator block of 7805 expressions), and 79 series three sections regulator block 79** provide the negative potential voltage stabilizing.

Embodiment 3: bag pressure pot type accelerator control device (Fig. 3 .1).Specific explanations is as follows:

Fig. 3 .1 is the theory diagram of bag pressure pot type accelerator control device.

All elements and symbol among embodiment 3 and Fig. 3 .1, except that D8f, Vxx, W3f need add the explanation in addition, all identical with embodiment 2 and Fig. 2 .1 counter element and current potential symbol, only increase the subscript that a subscript f represents to belong to accelerator control device, such as: CXf still is demand sensor CX, after but having increased subscript f, expression CXf is the control device CX of accelerator control device CKZZf; After element among Fig. 3 .1 and symbol remove subscript f, be exactly counter element and the symbol among Fig. 2 .1 and Fig. 2 .2; Its effect is also identical with its counter element and symbol.

The throttle of at present a lot of automobiles all has a throttle buffer, if there is not buffer, decontrols gas pedal (promptly losing oil) when pin one, and throttle is got back to idling at once, can feel that the speed of a motor vehicle is slack-off suddenly, and the sense of collision is arranged.The speed of a motor vehicle can be slack-off gradually after buffer had been arranged, and mild collides sense.But produced other problem again, when needs are braked, if the throttle buffer still continues to work, stopping distance has been increased, that is just unreasonable.In other words, lose oil when not touching on the brake, wish that the throttle buffer works, realize losing slowly oil; When touching on the brake, wish that the throttle buffer is inoperative, realize losing soon oil.Further, when touching on the brake, it is just better to have the action of losing oil soon and making clutch separation concurrently, has separated motor, and automobile is more prone to slow down.

Comprised a basic model control device in the bag pressure pot type accelerator control device, but its liquid discharging valve is at a slow speed; Also increase a quick fluid-discharge valve in addition, only opened liquid discharging valve at a slow speed when normally losing oil; During braking, the brake signal Vxx of the brake signal module ZD of bag pressure pot type braking control device is a high petential, makes the discharge opeing of quick fluid-discharge valve, and simultaneously, Vxx has received the driven quantity input end of difference amplifier CFf, and fluid-delivery valve is closed.Just closed throttle as long as stepped on brake.

The principle of CKZZf " lose slowly oil/lose soon oil ": can step on the throttle of appropriateness when vehicle is advanced, two input ends of difference amplifier ARf are respectively Vxf and Vqf, can be in driven quantity and keep state;

When not touching on the brake and losing oil, Vxf-Vqf=Vxqf＜(δ), Vrf＜(Vwf), (Vwf is the voltage stabilizing value of D4f), D4f is breakdown, power amplifier GF2f conducting, and liquid discharging valve W2f is open-minded, makes oil hydraulic cylinder YYGf discharge opeing among Fig. 2 .2; Simultaneously, Vrf＜(Vwf) time, power amplifier GF1f ends, and fluid-delivery valve W1f closes; At this moment, the driven quantity Vqf of oil hydraulic cylinder YYGf can descend, if rate of descent is too fast, can make the people feel to have and collide sense,, wish to drop in 2～4 seconds idling so wish that driven quantity Vqf rate of descent is not too fast, so the oil extraction speed of draining valve W2f is slow, oil extraction speed will be determined according to test, realizes " losing oil slowly " automatically, plays the effect of throttle buffer;

When touching on the brake, just must " lose oil soon ", so that shorten vehicle stopping distance.This need do 2+1 spare thing, and two is that throttle is done, and one is that clutch is done; Known from the 9th page of brake signal module ZD, can make during brake that Vxx is a high petential, first thing is that Vxx sends into the driven quantity Vqf input end among Fig. 3 .1, Vxx is much larger than demand Vxf, W1f is closed and W2f opens, the driveshaft QDGf of throttle returns rapidly, realizes losing oil (it is to lose oil slowly that W2f opens), the effect of D7f is to avoid Vxx to produce misoperation, when not touching on the brake, Vxx=0 is not if there is D7f, end of oppisite phase current potential=Vxx=0 of CFf, Vqf is inoperative, so, D7f has been arranged, the end of oppisite phase of CFf current potential=Vxx=high petential when touching on the brake, end of oppisite phase current potential=Vqf of CFf when not touching on the brake.Second thing is to realize losing soon oil, and the front knows that W2f oil extraction speed is low, so it is in parallel with W2f also to increase a quick oil drain solenoid valve W3f, strengthen oil extraction speed, as long as brake signal Vxx is a high petential, will open W3f, make the rapid oil extraction of YYGf, make throttle realize " losing oil soon ".Another part thing is a cut-off clutch, and complete saying so stepped on brake and just be equivalent to step on simultaneously clutch (embodiment 5).

Embodiment 4.1: the two-way control device of bag pressure pot type linking type, and as left steering-right steering linking type control device, perhaps: (throttle-braking in conjunction with the linking type control device, rising-decline linking type control device).

Fig. 4 .1 is bag pressure jar left steering-right steering linking type control device mechanical schematic diagram, its circuit theory diagrams identical with Fig. 2 .2 (just not wanting the ZD frame).

Bag pressure jar left steering-right steering control device can be divided into two kinds of separated and linking types, and the separated control device is identical with bag pressure pot type basic model driver control device, linking type and separated are different, linking type refers to that two amounts are the relation that is associated, and you advance me and move back, and I increase you and subtract.

Among Fig. 4 .1, oil hydraulic cylinder a (YYGa) and oil hydraulic cylinder b (YYGb) are fixed on the same axis line, driveshaft a (QDGa) is connected bar TC with driveshaft b (QDGb) and fixedlys connected, motion together, sensor separated arranged with two kinds of linking type, both can be that the actuator sensor CQab that a linking type is installed between oil hydraulic cylinder a and oil hydraulic cylinder b (has inductance type, Hall-type, piezoelectricity type, condenser type, see Fig. 6 .1～6.5 explanations), measure the differential wave of two Driven by Hydraulic Cylinder amounts, convert " the differential driven quantity Vqab " of standard by driven quantity transmitter BQab to; Also can be on dress sensor CQa and oil hydraulic cylinder b on the oil hydraulic cylinder a, to adorn sensor CQb respectively, transmitter BQa by separately and BQb obtain separately driven quantity Vqa and Vqb respectively again, Vqa merges with Vqb and has just become differential driven quantity Vqab, Vqab=Vqa-Vqb.This remains driven quantity, but is the form appearance with differential amount.

Notice that driven quantity Vqa and Vqb are that the direction that regulation ejects with driveshaft is a postive direction, and two driveshafts are fixedly linked, thus Vqa+Vqb=Vqm (Vqm is a constant),

Further analyze as can be known, Vqam is the maximum value of Vqa if make, when Vqb=0, and Vqa+0=Vqam=Vqm, and Vqab=Vqa-Vqb=Vqm; Equally, Vqbm is the maximum value of Vqb if make, when Vqa=0, and 0+Vqb=Vqbm=Vqm, and Vqab=Vqa-Vqb=-Vqm; So the excursion of Vqab be (Vqm, Vqm).

Vqab=Vqa-Vqb=Vqa-(Vqm-Vqa)=2*Vqa-Vqm, or Vqa=(Vqm+Vqab)/2,

That is to say that Vqab increases with regard to meaning left steering driven quantity Vqa to rise right steering driven quantity Vqb decline.

This embodiment adopts the processing circuit CL among Fig. 2 .1, and demand also adopts the sensor identical with driver, obtains " differential demand Vxab " equally, and Vxa=(Vxm+Vxab)/2 is arranged equally, (similar with Vqm, Vxm is the maximum value of Vxa or Vxb).

That is to say that Vxab increases with regard to meaning left steering demand Vxa to rise right steering demand Vxb decline.

To the controlled quentity controlled variable of linking type driver, can adopt dual mode, a kind of mode is that a controlling and driving device a gets final product, because link, controlled driver a and just controlled driver b, as long as this mode makes Vqa follow Vxa, complete regression has arrived the basic model control device.Another kind of mode is driven quantity poor of two drivers of control, because relation that I rise that disappears that the driven quantity of two drivers is those, the difference of driven quantity is Vqab=Vqa-Vqb, Vqab is called for short the differential amount that drives, and same, Vxab is called for short the differential amount of demand (Vxab=Vxa-Vxb), as long as this mode makes Vqab follow Vxab, be that system must make | Vxab-Vqab|＜δ, notice that the basic model control device is that system must make | Vx-Vq|＜δ, processing circuit CL is just the same.

Make Vxqab=Vxab-Vqab, Vxqab is the poor of differential demand and driven quantity.

Vqab and Vxab are input to CLab, and (CL is exactly the CL module in Fig. 2 .1 and 2.2, but in this example, be used to handle Vqab and Vxab, so write a subscript ab more, to emphasize), obtain V1 and V2 by processing circuit CLab, the fluid-delivery valve W1a of V1 control oil hydraulic cylinder a and the liquid discharging valve W2b of oil hydraulic cylinder b, the liquid discharging valve W2a of V2 control oil hydraulic cylinder a and the fluid-delivery valve W1b of oil hydraulic cylinder b.Just give another oil hydraulic cylinder discharge opeing for an oil hydraulic cylinder fluid injection.

Sketching, is that three kinds of states are arranged:

A kind of is to increase as Vxab, when making Vxqab＞δ, Vr＞Vw handles to obtain V1=1 and V2=0 through CLab, V1=1 makes W1a and W2b open-minded, V2=0 closes W2a and W1b, and the hydraulic pressure that this has just increased oil hydraulic cylinder a has reduced the hydraulic pressure of oil hydraulic cylinder b, Vqab is increased, Vxab-Vqab=Vxqab reduces, and makes Vxqab＜δ, and Vxab and Vqab reach balance.

A kind of is to reduce as Vxab, make Vxqab＜(δ) time, Vr＜(Vw), handle through CLab and obtain V1=0 and V2=1, V1=0 closes W1a and W2b, V2=1 makes W2a and W1b open-minded, and the hydraulic pressure that this has just reduced oil hydraulic cylinder a has increased the hydraulic pressure of oil hydraulic cylinder b, Vqab is reduced, Vxab-Vqab=Vxqab increases, and makes that Vxqab＞(δ), Vxab and Vqab reach balance.

A kind of be when Vxab approximate constant, and δ＞Vxqab＞(δ) time, Vw＞Vr＞(Vw), obtain V1=0 and V2=0 through the CLab processing, make W1a, W2b, W2a and W1b Close All, just keep the hydraulic pressure Vqab of two oil hydraulic cylinders, driven quantity is kept, and Vxab and Vqab keep balance.

Embodiment 4.2: the bag pressure pot type is the two-way control device of demand end separated driven quantity end altogether.

Fig. 4 .2 is total to demand end left steering-right steering separated control device circuit block diagram for the bag pressure jar.

The demand end adopts a cover sensor and a transmitter, and adopts two independent driver.After demand sensor CGt sampling obtains signal Vxt ',, become the demand Vxt of critical field through transmitter BXt conversion, stipulate that the excursion of this control device Vxt is (Vxm～Vxm) ,-Vxm and Vxm are respectively the lower limit and the upper limit of Vxt,

When Vxt＞0, Db ends, last no current of R5a and voltage drop, notion according to virtual earth, Vxb=0 is arranged, Vqb also can follow 0 very soon, driver b just rests on the home position, and signal processor CLb is in state of dormancy, has only signal processor CLa to be in active state, the excursion of Vxa is (0～Vxm), the excursion of Vqa also be (0～Vxm), be equivalent to CGt, BXt, several parts of CLa have been formed a basic model control device, each label removes after subscript a and the t, identical with Fig. 2 .1, its working principle is identical with embodiment 2;

When Vxt＜0, Da ends, R6a and R8a go up no current and voltage drop, Vxa=0 is arranged, Vqa also can follow 0 very soon, and driver a just rests on the home position, and signal processor CLa is in state of dormancy, have only signal processor CLb to be in active state, the excursion of Vxb is (Vxm～0), and the excursion of Vqb also is (Vxm～0), and Vxb and Vqb are negative values, demand and driven quantity increase be meant | Vxb| and | Vqb| increases, because Vxb is the end of oppisite phase that is connected on ARb, so when | when Vxb| increased, Vrb just increased, difference amplifier ARb is just opposite with the difference amplifier AR logical relation of basic model control device, below gives and explanation

When | Vxqb|=|Vxb-Vqb|＜δ, Vxb and Vqb reach balance; When | Vxqb|=|Vxb-Vqb|＞δ, mean that Vxb and Vqb have big difference, Vqb is drawn close to Vxb.

Sketching, is that three kinds of states are arranged:

A kind of is to work as demand | Vxb| increases (noticing that Vxb is a negative value), making | Vxqb|＞δ is Vxqb＜(δ) time, (noticing it is anti-phase difference amplifier ARb) has Vrb＞Vwb, reference diode D3b is breakdown, amplifirer GF1b saturation conduction, V1b=1, fluid-delivery valve W1b is open-minded, to oil hydraulic cylinder YYGb fluid injection; Simultaneously, during Vrb＞Vwb, power tube GF2b ends, V2b=0, and liquid discharging valve W2b closes.The V1b=1 fluid-delivery valve is opened and the V2b=0 liquid discharging valve is closed, and has just increased the hydraulic pressure of oil hydraulic cylinder b, driven quantity | and Vqb| also increases, and makes | and Vxqb|＜δ, Vxb and Vqb reach balance.

A kind of is to work as demand | Vxb| reduces, and makes | when Vxqb|＞δ is Vxqb＞δ, have Vrb＜(Vwb), reference diode D4b is breakdown, amplifirer GF2b saturation conduction, V2b=1, liquid discharging valve W2b is open-minded, from oil hydraulic cylinder YYGb discharge opeing; Simultaneously, Vrb＜(Vwb), power tube GF1b ends, V1b=0, and fluid-delivery valve W1b closes.The V1b=0 fluid-delivery valve is closed and the V2b=1 liquid discharging valve is open-minded, has just reduced the hydraulic pressure of oil hydraulic cylinder b, driven quantity | and Vqb| also reduces, and makes | and Vxqb|＜δ, Vxb and Vqb reach balance.

A kind of is to work as demand | Vxb| is constant, and | during Vxqb|＜δ, Vwb＞Vrb＞(Vwb) is arranged, reference diode D3b and D4b can be not breakdown, and amplifirer GF1b and GF2b end, and V1b and V2b equal zero, W1b fluid-delivery valve and liquid discharging valve W2b close, oil hydraulic cylinder YYGb hydraulic pressure is constant, keeps | and Vxqb|＜δ, Vxb and Vqb keep balance.

Embodiment 5: bag pressure pot type clutch control device.Fig. 5 .1-5.4.

Shift clutch and oil hydraulic pump clutch all lean on the hydraulic driving in the clutch fluid cylinder pressure separately, the clutch fluid cylinder pressure has a fluid-delivery valve and a liquid discharging valve, when the needs clutch separation, only need to open fluid-delivery valve and close liquid discharging valve with valve control signal, pressure liquid in the bag pressure jar just can inject oil hydraulic cylinder raises its hydraulic pressure, and trip(ping) lever LHG is released and cut-off clutch; When the needs clutch is fitted, only need to open liquid discharging valve and close fluid-delivery valve with valve control signal, the pressure liquid in the oil hydraulic cylinder just can be discharged hydraulic pressure is reduced, and LHG returns and the applying clutch with trip(ping) lever.The action of clutch is fairly simple, or is to separate, or is to fit, and gets final product with a switching value control.Hydraulic pressure in the electrical signal solenoidoperated cluthes oil hydraulic cylinder just comes the separation/applying of solenoidoperated cluthes, and shift clutch just can foot accelerator clutch.

Fig. 5 .1 is an Isolating Switch group schematic diagram.The various switches that comprised among the frame of broken lines SSS (SB1, SB2, SQ1, KS1, KS2, S1, S2, KA2a) all are the switches that sends " separation/applying " instruction.For simplicity, with the combination in the SSS symbol frame table diagrammatic sketch 5.1 of Fig. 5 .2, claim Isolating Switch group SSS among the back figure by SB1, SB2, SQ1, KS1, KS2, S1, S2, these a plurality of switches of KA2a.Fig. 5 .3 is clutch control device circuit theory diagrams, and Fig. 5 .4 is a clutch control device schematic diagram.

The explanation of Isolating Switch group code:

SB1 often drives button for the manual shift of control clutch, is contained on the gear level, presses during gearshift and closure, (making relay coil KA1 energising) sends the cut-off clutch signal, unclamps after gearshift is finished, self-return disconnects, and (making relay coil KA1 outage) sends the applying clutch engagement signal.

SB2 is the foot-propelled conventional button, is that the custom of taking into account driver until old is provided with, and identical with SB1, button closure when stepping on is sent the cut-off clutch signal; The applying clutch engagement signal is sent in button automatic disconnection when unclamping.

KA2a is " brake contact ", and this normally opened contact is by brake signal Vxx high petential closure, and low potential disconnects, and solenoidoperated cluthes separate.During brake, (among Fig. 2 .2) as long as Vx＞Ve, Vxx will equal high petential, and T3 is at once saturated, and relay coil KA2 energising makes KA2a closed and make clutch separation, separate motor after, kinetic energy reduces, braking can be rapider; Vx＜Ve after the brake that comes loose, relay coil KA2 outage disconnects KA2a.

KS1 is anti-flame-out speed switch.Behind the engine misses, direction power-assisted and brake power-assisted all can disappear, and may cause traffic accident, so will prevent engine misses.Engine speed K switch S1 has been anti-flame-out effect, and when rotating speed dropped near idling n1, speed switch KS1 sent separation signal to avoid flame-out; The working principle of speed switch KS1 has multiple, and the present invention adopts the value of engine speed indicator as signal source, and signal source is controlled a relay through after amplifying, and relay contact has just become speed switch KS1.

S1 is the clutch locks switch.This paper claims that S1 is a locking switch, is because it can self-return, from reach close or from close to open all must the people for controlling, such switch is a lot, such as toggle switch, rotary switch, throw-over switch etc., below all is referred to as locking switch.When travelling usually, S1 is pushed closed state, allow all mode cut-off clutches; And when descending, should drag-down and inaccurate cut-off clutch, so S1 is pushed turnoff state, do not allow S2 or KS1 or KA2a closure to make coil KA1 energising, role is exactly the separation signal of limit erroneous.

S2 is the clutch locks switch above the parking brake.The fresh driver who has can forget that because of carelessness unclamping parking brake drives, S2 has been arranged after, as long as pull on parking brake, clutch is fitted, car leaves motionless.

When Isolating Switch group SSS is closed, the KA1 coil electricity, normally opened contact KA1a closure, Vd is a high petential, open clutch fluid-delivery valve W1d, close clutch liquid discharging valve W2d (W2d is the valve of closing after the energising, and the spy marks with black triangle), make piston HSd and driveshaft QDGd among the pressure liquid driving oil hydraulic cylinder YYGd in the bag pressure jar, drive clutch separation, simultaneously, stroke plate XCB stirs position limit switch SQ1 action makes W3d open-minded, performs discharge opeing and prepares; When Isolating Switch group SSS disconnects, close fluid-delivery valve W1d and open liquid discharging valve W2d, by large pipeline GD3d and the common quick fluid-discharge of small pipeline GD2d, this stage driveshaft is return than comparatively fast, XCB returns to a half when the stroke plate, stirs position limit switch SQ1 action W3d is closed, and the discharge opeing path has only small pipeline GD2d discharge opeing at a slow speed, clutch is fitted at a slow speed, and this is with regard to the reasonable hints on operation of accomplishing " loose at a slow speed clutch after narrowing ".

It more than is the working principle of shift clutch, if the oil hydraulic pump of bag pressure jar supplementary pressure liquid adopts machine power, also can use an oil hydraulic pump clutch, working principle is identical, as long as the air bag state K switch P1 among Fig. 1 .1 is replaced Isolating Switch group SSS or relay contact KA1a.

Embodiment 6.1: plus-minus differential type transformer.

Sensor commonly used has inductance type (comprising transformer type), condenser type, piezoelectricity type, Hall-type etc. multiple, anyly can also can make the sensor of drive end as the sensor of demand end.Sensor is with the measured electric weight that is converted into, measured pointwise is converted into after the electric weight, obtain one " inversion cuver ", in general, the inversion cuver similarity degree height of same type of sensor, inversion cuver similarity degree between the inhomogeneous sensor is low, and in order to reduce error, demand end and drive end should adopt the sensor of similar even same model.

In inductive transducer family, the present invention proposes a kind of plus-minus differential type transformer, and a kind of as the linking type sensor CQab of the linking type driver among Fig. 4 .1 also can be used as the linking type demand sensor of Fig. 7 commutator.

Fig. 6 .1 is plus-minus differential type transformer principle figure.Rectangle frame ZDQ-oscillator; Md-bar iron core (armature); The Lb-reversed phase coil; The Lc-reference coil; The Ls-primary coil; Xa-bar iron core moves span; The La in-phase coil; The Ma-iron-core coil; The non magnetic connecting rod of Mb-; The Mc-central tunnel; The voltage effective value of Ua-La is the homophase electromotive force; The voltage effective value of Uc-Lc is reference potential; The voltage effective value of Ub-Lb is anti-phase electromotive force; The terminal potential of the same name of Uaa-La; The terminal potential of the same name of Ubb-Lb; Uab=Uaa-Ubb=Ua+Ub+Uc; La and Lb mirror image symmetry, the length of Xa equal La or the Lb stitch length adds end iron core transverse tooth thickness, and the bar core length just equals the iron core length overall that Lc adds Lb (Lc adds La).

Fig. 6 .2 is the graph of a relation of bar iron core position and output potential.Reversed phase coil and in-phase coil are in the reference coil both sides, and three all is secondary coil; Transverse axis X is a bar iron core mobile position coordinate, when bar iron core bottom is concordant with the iron-core coil bottom, is set at x=0, when bar iron core top is concordant with the iron-core coil top, is set at x=Xa; The longitudinal axis is the coordinate of output potential Uab, and Uam is the maximum value of Ua, and Ucm is the maximum value of Uc, and Ubm is the maximum value of Ub.

Working principle: oscillator produces high_frequency sine wave and inputs to primary coil, and reversed phase coil, in-phase coil and three of reference coils all are secondary coils, from three particular points overall picture of sensor characteristics as can be seen:

When bar iron core bottom during with iron-core coil bottom concordant (x=0), in-phase coil La does not have the bar iron core to constitute magnetic loop, and Fig. 6 .3 has reflected coil Ls and Lc and Lb formation magnetic coupling maximum, Uc=Ucm, Ub=Ubm; And Ls and La do not have magnetic coupling, and Ua can ignore, and notice that Lc is opposite with the end of the same name of Lb, so Uc and Ub are anti-phase,

With

Have according to the phase magnitude relation So Uab=Ua+Ub+Uc=Ucm-Ubm, obtain coordinate points (0, Ucm-Ubm).

When bar iron core top concordant with the iron-core coil top (x=Xa moves to the top on the Md among Fig. 6 .1, Fig. 6 .3), reversed phase coil Lb does not have the bar iron core to constitute magnetic loop, Ub can ignore, coil Ls and Lc and La form magnetic coupling maximum, Uc=Ucm, Ua=Uam, notice that Lc is consistent with the extreme direction of the same name of La, so Uc and Ua are homophases, according to the phase magnitude relation Uc+Ua=Ucm+Uam is arranged, so Uab=Ua+Ub+Uc==Ucm+Uam, obtain coordinate points (Xa, Ucm+Uam).

When bar iron core position was (x=Xa/2), reversed phase coil Lb and in-phase coil La constituted half magnetic loop with the bar iron core, | Ua|=|Ub|, but phase place is just opposite, just in time cancels each other, i.e. Ua+Ub=0, so Uab=Ua+Ub+Uc==Ucm, obtain coordinate points (Xa/2, Ucm).The whole relation of bar iron core position and Uab constitutes Fig. 6 .2 " characteristic curve " XU, in fact becomes straight line.If make Ucm=Uam=Ubm, characteristic equation is: Uab=(2*Ucm/Xa) * x;

If adopt the structure of auto-transformer, primary coil and reference coil can be united two into one.

Embodiment 6.2: the interlock hall sensor.Fig. 6 .4 hall sensor that links.CT1 and CT2-magnet; The I-electric current; Vt '-Hall voltage; The HG-Hall element.

For the linking type Hall transducer, signal converyer XHQ and Hall element HG fix, when Hall element HG is in magnet CT1 and CT2 middle, and Vt '=0; When among Fig. 7 during the steering wheel left steering, screw rod 7A is left-handed, drives on inner thread sleeve 7B and the signal converyer XHQ to move, and the signal converyer drives on the HG and moves, and Vt ' increases; Otherwise, when steering wheel when turn right in middle position, screw rod 7A dextrorotation drives inner thread sleeve 7B and signal converyer XHQ and moves down, the signal converyer drives HG and moves down, | Vt ' | increase, but Vt ' is a negative value.

Embodiment 6.3: the interlock piezoelectric transducer.Fig. 6 .5 piezoelectric transducer that links.YDCGa and YDCGb-piezoelectric transducer; THa and THb-spring; XHQ-signal converyer; Va ' and Vb ' piezoelectricity electromotive force; Vab '-output potential.

Piezoelectric transducer is moved in distich, and when moving on the signal converyer XHQ, the YDCGa Va ' that is stressed increases, and YDCGb is subjected to pulling force | Vb ' | increase (Vb ' be negative value); And YDCGb-Vt ' increases; Otherwise when signal converyer XHQ moved down, the YDCGb Vb ' that is stressed increased, and YDCGa is subjected to pulling force | Va ' | increase (Va ' be negative value).Remove a piezoelectric transducer and just become the separated piezoelectric transducer.

Embodiment 7: linking type demand control device.Fig. 7 steering-wheel type demand control device.The 7A-threaded stem; The 7B-inner thread sleeve; XHQ-signal converyer; The 7D-steering wheel; The 7E-bearing; The steering bar of 7F-and threaded stem one; The 7G-guide rail, guide rail and car body are fixed, and the guide groove restriction is arranged between inner thread sleeve and the guide rail, make sleeve to move up and down, and can not rotate.The demand control device is exactly the module CK among Fig. 2 .1.

When steering wheel 7D left steering, screw rod 7A is left-handed, drives on inner thread sleeve 7B and the signal converyer XHQ to move; Otherwise when the steering wheel right steering, screw rod 7A dextrorotation drives inner thread sleeve 7B and signal converyer XHQ and moves down.

Signal converyer XHQ driving sensor produces electrical signal, and sensor has a variety of, and commonly used have inductance type (transformer type), piezoelectricity type, Hall element, a condenser type.

For transformer type sensor, signal converyer XHQ drives its armature, changes its output voltage size.

Embodiment 8: separated demand control device.Such as throttle and break, this class control device is a lot, below proposes two kinds.

The little pendulum-type demand of Fig. 8 .1 control device.8A-pedal hinge; The 8B-pedal; The 8D-hinge; The 8H-baffle plate; The TH-spring; The YDCGt-piezoelectric transducer; The 8J-pilot sleeve; 8K-waves axle; The 8L-slide bar.

When pedal 8B stepped on, hinge 8D compressing slide bar 8L slided along pilot sleeve 8J, baffle plate 8H pressure spring TH, and along with spring pressure increases, the piezoelectric voltage V8 that piezoelectric transducer YDCGt produces is just more and more higher, and V8 is directly proportional with the stroke that pedal is stepped on; Because the movement locus of hinge 8D is to be the arc in the center of circle with 8A, promptly the hinge 8D of slide bar end has any to wave, and waves axle so do one on pilot sleeve 8J, supports waving of hinge 8D end.

Fig. 8 .2 towed demand control device.The 8C-dragging plate; The driven hinge of 8E-(drag a little, dragged) by connecting rod; The 8F-connecting rod; 8G-is hinge initiatively;

When pedal 8B stepped on, connecting rod 8F can down drag slide bar 8L, and the piezoelectric voltage V8 that piezoelectric transducer YDCGt is produced is just more and more higher.Initiatively the effect of hinge 8G, driven hinge 8E and connecting rod 8F is as follows: when slide bar is sliding from top to bottom, driven hinge 8E changes apart from the distance of pedal hinge 8A, and initiatively hinge 8G fixes apart from the distance of pedal hinge 8A, so between 8G and 8E, do an active link with connecting rod 8F, connecting rod 8F should be sandwiched between slide bar 8L and the dragging plate 8C, do not draw well, have to be drawn in the outside of slide bar 8L.

It is also passable to change piezoelectric transducer YDCGt into Hall, inductive pickup.

Fig. 1 .1 is a bag pressure jar fundamental diagram.

Fig. 1 .2 is the block diagram of " based on the electro-hydraulic control system of bag pressure jar ".

Fig. 2 .1 is the basic principle block diagram of bag pressure pot type basic model (braking of holding concurrently, separated turn to) control device.

Fig. 2 .2 is the circuit theory diagrams of bag pressure pot type braking device,

Fig. 2 .3 is one of circuit diagram of transmitter.

Fig. 3 .1 is the theory diagram of bag pressure pot type accelerator control device.

Fig. 4 .1 is bag pressure jar left steering-right steering linking type control device mechanical schematic diagram,

Fig. 4 .2 is bag pressure jar demand end left steering-right steering separated control device circuit block diagram altogether.

Fig. 5 .1 is an Isolating Switch group schematic diagram.

Fig. 5 .2 is the symbol frame table diagrammatic sketch of Isolating Switch group.With the combination in the symbol frame SSS presentation graphs 5.1, claim Isolating Switch group SSS by SB1, SB2, SQ1, KS1, KS2, S1, S2, these a plurality of switches of KA2a.

Fig. 5 .3 is clutch control device circuit theory diagrams,

Fig. 5 .4 is a clutch control device schematic diagram.

Fig. 6 .1 is plus-minus differential type transformer principle figure.

Fig. 6 .2 is the graph of a relation of bar iron core position and output potential.

Fig. 6 .3 is that coil Ls and Lc and Lb form magnetic-coupled schematic representation.

Fig. 6 .4 is the interlock hall sensor.

Fig. 6 .5 is the interlock piezoelectric transducer.

Fig. 7 is a steering-wheel type demand control device.

Fig. 8 .1 is little pendulum-type demand control device.

Fig. 8 .2 is a towed demand control device.

Claims (10)

1. electro-hydraulic control system based on internal airbag formula hydraulic tank.It is characterized in that: the basis of this system is internal airbag formula hydraulic tank (being designated hereinafter simply as " bag pressure jar "), and the principle of bag pressure jar is to come stores hydraulic pressure with the mode that stores air pressure; A built-in storage pressuring gasbag is arranged in the bag pressure jar, inject a kind of material that agent is pressed in storage that is called in the air bag, storage press agent for the saturation vapor pressure in operating temperature range be 0.12-20MPa and when temperature variation the little material of saturation vapor pressure excursion, this air bag is constant voltage when temperature-resistant, when oil hydraulic pump during to the bag pressure filling liquid, as long as hydraulic pressure surpasses air bag air pressure, just air bag can be flattened, pressure liquid is all filled with in the place except that air bag in the bag pressure jar; When the outside work done of pressure liquid, the pressure of pressure liquid is that the saturation vapor pressure in the air bag provides, and this is an accurate constant voltage, in other words, stored a pressure tank liquid in the bag pressure jar, its pressure equals storage and presses the agent saturation vapor pressure, forms an accurate constant voltage bag pressure jar that pressure is higher; With the bag pressure jar is core, is the periphery with oil hydraulic pump, safety check, stock solution tube, constitutes bag pressure jar module.

Control device CKZZ in the control system is made up of operator, sensor, transmitter, signal processor, bag pressure jar, solenoid valve, final controlling element; The driver converts a demand to the operation amplitude of certain control device to by sensor and transmitter, after signal processor processes, send the electromagnetic valve signal, control final controlling element in cylinder pressure increase or reduce, thereby the variation of control execution amount makes the execution amount follow the variation of demand and change; Difference according to valve control signal has three kinds of actions, and a kind of is that fluid-delivery valve is opened and liquid discharging valve is closed, and by bag pressure jar oil hydraulic cylinder injection pressure liquid in final controlling element, the hydraulic pressure that this has just increased oil hydraulic cylinder increases the execution amount; A kind of be fluid-delivery valve close and liquid discharging valve open-minded, just reduced the hydraulic pressure of oil hydraulic cylinder, the execution amount is reduced; A kind of is that fluid-delivery valve is closed and liquid discharging valve is closed, and has just kept the hydraulic pressure of oil hydraulic cylinder, and the execution amount is kept.

2. a kind of electro-hydraulic control system according to claim 1 based on internal airbag formula hydraulic tank, its further feature is: a bag pressure jar module NYMK is arranged, comprise bag pressure jar, oil hydraulic pump, safety check, stock solution tube; The core of bag pressure jar module is an internal airbag formula hydraulic tank, and its structure comprises that with lower member the agent inlet is pressed in the ZYK-storage; The XYC-liquid-adsorption layer is spongy hard layer, and its effect is to exert pressure to air bag is comprehensive by guide pressure liquid; GB-bag pressure jar tank skin; The QN-air bag; Agent is pressed in the CYJ-storage; The DB-perforated baffle avoids air bag to stop up liquid entering hole and liquid outlet; YLY-pressure liquid; The CY-liquid outlet; The JY-liquid entering hole; KP1-air bag status switch, when air bag was crushed, KP1 disconnected, and when pressure liquid is discharged to a certain amount ofly when air bag is strutted, KP1 connects, and makes liquid pump PE starting, gives bag pressure jar supplementary pressure liquid, and position limit switch and pressure switch can realize this function; Storage press agent for the saturation vapor pressure in operating temperature range be 0.3-2MPa and when temperature variation the little material of saturation vapor pressure excursion.

3. a kind of electro-hydraulic control system according to claim 1 based on internal airbag formula hydraulic tank, its further feature is: the method for driving of the oil hydraulic pump PE of bag pressure jar supplementary pressure liquid has two classes, one class is a motoring, when pressure liquid is very full, air bag is compressed fully, pressure switch KP1 is cut off, the motor of oil hydraulic pump PE does not change, when pressure liquid is discharged to a certain amount of, (air bag struts 1/2 when making air bag strut " supplementary view ", 1/3 still is that other value is supplementary view, determine according to design and test), pressure switch KP1 connects, the motor operation of oil hydraulic pump is to bag pressure jar supplementary pressure liquid; Another kind of is engine-driving, when pressure liquid was very full, air bag was compressed, and pressure switch KP1 is cut off, make " oil hydraulic pump clutch " PELH be in separated state, motor can not drive oil hydraulic pump PE running, when pressure liquid be discharged to a certain amount of, when making air bag strut " supplementary view ", pressure switch KP1 connects, make the oil hydraulic pump clutch be in fit-state, motor drives oil hydraulic pump PE running, to bag pressure jar supplementary pressure liquid; The ZHF-safety check prevents that the pressure liquid in the bag pressure jar from refluxing.

4. a kind of electro-hydraulic control system according to claim 1 based on internal airbag formula hydraulic tank, its further feature is: bag pressure pot type basic model control device comprises control device CK, demand sensor CX, demand transmitter BX, processing circuit CL, fluid-delivery valve W1, liquid discharging valve W2, oil hydraulic cylinder YYG, driven quantity sensor CQ, driven quantity transmitter BQ and bag pressure jar module NYMK; Wherein processing circuit module CL is made up of difference amplifier CF, fluid injection threshold circuit YZ1 and discharge opeing threshold circuit YZ2, fluid injection power magnification circuit GF1 and discharge opeing power magnification circuit GF2; The operation amplitude CZFD of control device CK is converted into voltage Vx ' by demand sensor CX; Use demand transmitter BX that voltage Vx ' is adjusted into voltage Vx again; Equally, driving amplitude is converted into voltage Vq ' by driven quantity sensor CQ; Use driven quantity transmitter BQ that voltage Vq ' is adjusted into voltage Vq again;

The effect of control device is exactly to make driven quantity Vq follow demand Vx to change in essence, makes δ ₁＞Vxq＞(δ ₂), concrete analysis has following three state:

1, driven quantity is kept state.When operation amplitude is constant, indicate to keep current amplitude, (such as, when keeping throttle big or small, indicate to keep current driven quantity), Vx and Vq can be in a kind of equilibrium state, and the absolute value of Vxq can be smaller, and Vxq maintains δ ₁＞Vxq＞(δ ₂) in the scope, being lower than the threshold value of opening of threshold circuit YZ1 and YZ2, power amplifier GF1 and GF2 end, and fluid-delivery valve and liquid discharging valve are all closed, and keep the hydraulic pressure of oil hydraulic cylinder;

2, driven quantity increases state.When operation amplitude increases, indicate to increase current amplitude, (such as, when opening the throttle, indicate to increase driven quantity), Vx increases, and makes Vxq＞δ ₁, being higher than the threshold value of opening of threshold circuit YZ1, power amplifier GF1 saturation conduction and GF2 ends is opened fluid-delivery valve (liquid discharging valve is closed), and the pressure liquid in the bag pressure jar improves the hydraulic pressure of oil hydraulic cylinder to the oil hydraulic cylinder fluid injection, and driven quantity Vq increases thereupon, and Vxq is decreased to＜δ ₁, at this moment satisfy δ again ₁＞Vxq＞(δ ₂), enter driven quantity and keep state, fluid-delivery valve and liquid discharging valve are all closed, keep the hydraulic pressure of oil hydraulic cylinder;

3, driven quantity reduces state.When operation amplitude reduces, indicate to reduce current amplitude, (such as, when reducing throttle, indicate to reduce driven quantity), Vx reduces, and makes Vxq＜(δ ₂), being higher than the threshold value of opening of threshold circuit YZ2, power amplifier GF2 saturation conduction and GF1 ends is opened liquid discharging valve (fluid-delivery valve is closed), to the oil hydraulic cylinder discharge opeing, reduces the hydraulic pressure of oil hydraulic cylinder, and driven quantity Vq decreases, and Vxq increases to＞(δ ₂), at this moment satisfy δ again ₁＞Vxq＞(δ ₂), enter driven quantity and keep state, fluid-delivery valve and liquid discharging valve are all closed, keep the hydraulic pressure of oil hydraulic cylinder;

In order to reduce nonlinearity erron, the demand sensor adopts identical or similar sensor with the driven quantity sensor.

One of physical circuit of processing circuit CL is in the bag pressure pot type basic model control device, and its difference amplifier CF is made of integrated operational amplifier AR and resistance R 5, R6, R7, R8, makes R5=R6, and R7=R8 has Av=R7/R5; In two branch roads of AR output, two threshold circuits are made of the positive reversal connection of voltage-stabiliser tube respectively; Its power magnification circuit is connected into emitter output circuit by two triodes and constitutes.

If the voltage stabilizing value of voltage-stabiliser tube D3 and D4 is Vw, make δ=Vw/Av.When | Vxq|＜δ, Vx and Vq reach balance; When | Vxq|＞δ, Vx and Vq have big difference, and Vq is drawn close to Vx.

1, increase as demand Vx, when making Vxq＞δ, Vx-Vq＞δ, the expression driven quantity is less than normal, should strengthen driven quantity.It is as follows that driven quantity increases process:

When Vxq＞δ, Vr＞Vw is arranged, breakdown as the reference diode D3 of fluid injection threshold circuit, power tube T1 saturation conduction, V1=1, fluid-delivery valve W1 is open-minded, to oil hydraulic cylinder YYG fluid injection; Simultaneously, during Vr＞Vw, power tube T2 ends, V2=0, and liquid discharging valve W2 closes.The V1=1 fluid-delivery valve is opened and the V2=0 liquid discharging valve is closed, and has just increased the hydraulic pressure of oil hydraulic cylinder, has increased driven quantity Vq, makes Vxq＜δ, and Vx and Vq reach balance.

2, reduce as demand Vx, make | during Vx-Vq|＞δ, promptly Vxq＜(δ) time, Vx-Vq＜(δ), the expression driven quantity is bigger than normal, should reduce driven quantity.Process is as follows:

When Vxq＜(δ) time, have Vr＜(Vw), breakdown as the reference diode D4 of discharge opeing threshold circuit, power tube T2 saturation conduction, V2=1, liquid discharging valve W2 is open-minded, makes oil hydraulic cylinder YYG discharge opeing among Fig. 2 .1, simultaneously, Vr＜(Vw) time, power tube T1 ends, V1=0, and fluid-delivery valve W1 closes.The V1=0 fluid-delivery valve is closed and the V2=1 liquid discharging valve is open-minded, has just reduced the hydraulic pressure of oil hydraulic cylinder, has reduced driven quantity Vq, makes that Vxq＞(δ), Vx and Vq reach balance.

3, when demand Vx approximate constant, and δ＞Vxq＞(δ) time, | Vx-Vq|＜δ, expression driven quantity and demand are approaching, should keep driven quantity.The driven quantity maintenance process is as follows:

When δ＞Vxq＞(δ) time, Vr＜Vw, D3 can be not breakdown, and T1 ends, V1=0, fluid-delivery valve W1 closes; Simultaneously, Vr＞(Vw), D4 can be not breakdown yet, and T2 ends, V2=0, and liquid discharging valve W2 closes.The V1=0 fluid-delivery valve is closed and the V2=0 liquid discharging valve is closed, and then oil hydraulic cylinder is kept current hydraulic pressure, and driven quantity is kept, and Vx and Vq keep balance.

5. a kind of electro-hydraulic control system according to claim 1 based on internal airbag formula hydraulic tank, its further feature is: bag pressure pot type braking control device is to have increased brake signal module ZD on bag pressure pot type basic model control device basis, the in-phase end of comparator AZ inserts a very little anti-interference positive potential Ve by divider resistance Rd and Re, make braking requirement amount Vx=0～Vxmax, when Vx＜Ve, Dz=(U), triode T3 ends, brake signal Vxx is the low potential current potential, when Vx＞Ve, Dz=+U, triode T3 is saturated, and brake signal Vxx becomes high petential, at this moment can produce two effects, one is to make accelerator control device lose oil fast, and one is to make clutch separation.

6. a kind of electro-hydraulic control system according to claim 1 based on internal airbag formula hydraulic tank, its further feature is: comprised a basic model control device in the bag pressure pot type accelerator control device, but its liquid discharging valve is at a slow speed; Also increase a quick fluid-discharge valve in addition, only opened liquid discharging valve at a slow speed when normally losing oil; During braking, the brake signal Vxx of the brake signal module ZD of bag pressure pot type braking control device is a high petential, makes the discharge opeing of quick fluid-discharge valve, and simultaneously, Vxx has received the driven quantity input end of difference amplifier CFf, and fluid-delivery valve is closed.

7. a kind of electro-hydraulic control system according to claim 1 based on internal airbag formula hydraulic tank, its further feature is: the controlled quentity controlled variable of bag pressure jar linking type steering manipulation device, can adopt dual mode, a kind of mode is that a controlling and driving device a gets final product, because link, controlled driver a and just controlled driver b, as long as this mode makes Vqa follow Vxa, complete regression has arrived the basic model control device; Another kind of mode is driven quantity poor of two drivers of control, because relation that I rise that disappears that the driven quantity of two drivers is those, the difference of driven quantity is Vqab=Vqa-Vqb, Vqab is called for short the differential amount that drives, equally, Vxab is called for short the differential amount of demand (Vxab=Vxa-Vxb), as long as this mode makes Vqab follow Vxab, be that system must make | Vxab-Vqab|＜δ, notice that the basic model control device is that system must make | Vx-Vq|＜δ, processing circuit CL is just the same, difference is two oil hydraulic cylinders about this system is, be that V1 and V2 will control two oil hydraulic cylinders, the fluid-delivery valve W1a of V1 control oil hydraulic cylinder a and the liquid discharging valve W2b of oil hydraulic cylinder b, the liquid discharging valve W2a of V2 control oil hydraulic cylinder a and the fluid-delivery valve W1b of oil hydraulic cylinder b.Just give another oil hydraulic cylinder discharge opeing for an oil hydraulic cylinder fluid injection.When V1=1 and V2=0, W1a and W2b open and W2a and W1b close, and make oil hydraulic cylinder a fluid injection and oil hydraulic cylinder b discharge opeing; Otherwise, when V1=0 and V2=1, W1a and W2b close and W2a and W1b open-minded, make oil hydraulic cylinder a discharge opeing and oil hydraulic cylinder b fluid injection.

8. a kind of electro-hydraulic control system according to claim 1 based on internal airbag formula hydraulic tank, its further feature is: bag pressure pot type clutch control device, by Isolating Switch group SSS control, comprise multiple switch: SB1, SB2, SQ1, KS1, KS2, S1, S2, KA2a among the Isolating Switch group SSS; SB1 often drives button for the manual shift of control clutch, is contained on the gear level, presses during gearshift and closure, (making relay coil KA1 energising) sends the cut-off clutch signal, unclamps after gearshift is finished, self-return disconnects, and (making relay coil KA1 outage) sends the applying clutch engagement signal; SB2 is the foot-propelled conventional button, is that the custom of taking into account driver until old is provided with, and identical with SB1, button closure when stepping on is sent the cut-off clutch signal; The applying clutch engagement signal is sent in button automatic disconnection when unclamping; KA2a is " brake contact ", and this normally opened contact is by brake signal Vxx high petential closure, and low potential disconnects, and solenoidoperated cluthes separate; KS1 is anti-flame-out speed switch, and the value that adopts engine speed indicator is as signal source, and signal source is controlled a relay through after amplifying, and relay contact has just become speed switch KS1; S1 is the clutch locks switch, it can self-return, when travelling usually, S1 is pushed closed state, allow all mode cut-off clutches, and when descending, should drag-down and inaccurate cut-off clutch, so S1 is pushed turnoff state, do not allow S2 or KS1 or KA2a closure to make coil KA1 energising, role is exactly the separation signal of limit erroneous; S2 is the clutch locks switch above the parking brake, S2 has been arranged after, as long as pull on parking brake, clutch is fitted, car leaves motionless;

When Isolating Switch group SSS is closed, the KA1 coil electricity, normally opened contact KA1a closure, Vd is a high petential, open clutch fluid-delivery valve W1d, close clutch liquid discharging valve W2d, drive clutch separation, simultaneously, stroke plate XCB stirs position limit switch SQ1 action makes W3d open-minded, performs discharge opeing and prepares; When Isolating Switch group SSS disconnects, close fluid-delivery valve W1d and open liquid discharging valve W2d, by large pipeline GD3d and the common quick fluid-discharge of small pipeline GD2d, this stage driveshaft is return than comparatively fast, XCB returns to a half when the stroke plate, stir position limit switch SQ1 action W3d is closed, the discharge opeing path has only small pipeline GD2d discharge opeing at a slow speed, and clutch is fitted at a slow speed;

The oil hydraulic pump clutch that the oil hydraulic pump of bag pressure jar supplementary pressure liquid adopts machine power to use, working principle is identical, as long as air bag state K switch P1 is replaced Isolating Switch group SSS or relay contact KA1a.

9. a kind of electro-hydraulic control system according to claim 1 based on internal airbag formula hydraulic tank, its further feature is: use pressure transducer, Hall transducer and plus-minus differential type transformer are as the sensor of demand and driven quantity collection, the bar iron core Md length of plus-minus differential type transformer just equals the iron core length overall that reference coil Lc adds reversed phase coil Lb, oscillator produces high_frequency sine wave and inputs to primary coil, reversed phase coil and in-phase coil are in the reference coil both sides, three all is secondary coil, when the bar iron core is in the reversed phase coil side, anti-phase electromotive force and reference potential subtract each other, the output combined potential is minimum, along with the past in-phase coil side shifting of bar iron core Md, the homophase electromotive force increases and anti-phase electromotive force reduces, and combined potential increases gradually.

10. a kind of electro-hydraulic control system according to claim 1 based on internal airbag formula hydraulic tank, its further feature is: little pendulum-type demand control device, when pedal 8B steps on, hinge 8D compressing slide bar 8L slides along pilot sleeve 8J, baffle plate 8H pressure spring TH, along with spring pressure increases, the piezoelectric voltage V8 that piezoelectric transducer YDCGt produces is just more and more higher, and V8 is directly proportional with the stroke that pedal is stepped on; Because the movement locus of hinge 8D is to be the arc in the center of circle with 8A, promptly the hinge 8D of slide bar end has any to wave, and waves axle so do one on pilot sleeve 8J, supports waving of hinge 8D end.

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