CN105840320A - Electronic speed regulator and actuator drive circuit for diesel engine duplicated hot-redundancy - Google Patents
Electronic speed regulator and actuator drive circuit for diesel engine duplicated hot-redundancy Download PDFInfo
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- CN105840320A CN105840320A CN201610280231.1A CN201610280231A CN105840320A CN 105840320 A CN105840320 A CN 105840320A CN 201610280231 A CN201610280231 A CN 201610280231A CN 105840320 A CN105840320 A CN 105840320A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
- F02D1/10—Transmission of control impulse to pump control, e.g. with power drive or power assistance mechanical
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Abstract
The invention relates to an electronic speed regulator and actuator drive circuit for diesel engine duplicated hot-redundancy. The electronic speed regulator and actuator drive circuit for the diesel engine duplicated hot-redundancy is composed of a controller end drive circuit part and a drive adapter plate. The controller end drive circuit comprises a first optical coupler, a first MOS tube, a first voltage stabilizing diode, a second freewheel diode, a first divider resistor, a fourth divider resistor, a second current-limiting resistor and a third current-limiting resistor. The drive adapter plate comprises a drive circuit part and a logic control circuit part. The drive adapter plate end drive circuit comprises a second MOS tube, a third MOS tube and a fifth coil drive selective chip. The core of achieving the fault loop passive cutting-out function is edge D triggers and eight-to-one data selectors, and reliable output of a control loop can be guaranteed through the latch function of the edge D trigger. A control circuit of a control adapter part is achieved through a simulator, and reliability is high.
Description
Technical field
The present invention relates to a kind of diesel engine two-node cluster hot backup electronic governor actuator drive circuit.
Background technology
The development of diesel engine has the history of upper a century, because of its higher thermal efficiency, broad power bracket, well adapting to property
It is widely used etc. advantage.Two-node cluster hot backup electron speed regulator can heighten the reliability of electron speed regulator, failure condition
Under diesel engine no shutdown run continuously, wherein the driving of twin coil actuator is the important step of two-node cluster hot backup electron speed regulator.
The feature of twin coil actuator is that an actuator is made up of two-way coil, the task driven actuator that two-way coil can be independent
Pull bar.Two-node cluster hot backup electron speed regulator has following requirement to executing agency: first have to the quilt that Seeking Truth two-way coil can be independent
Drive, i.e. two-way actuator coil can work simultaneously, and any one map can work independently again；Secondly require at dual-locomotive heat
When unit fault occurs in standby system, what fault loop was corresponding controls the cut-out that loop can be passive.The redundancy actuator of design drives
Dynamic circuit is largely divided into two parts, controller end actuator driven and driving keyset, and two part collaborative works complete actuator
Driving.The drive circuit driving keyset part is equivalent to a switch on actuator driven loop, switches on-off by two
Controller co-controlling.In the case of two control loops are all normal, two-way controls loop and works simultaneously, when one controls loop
Breaking down, fault loop can cut out under the control of regular path, is effectively isolated fault, improves system availability.Public
The document opened has a lot of patent be referred to the concept of two-node cluster hot backup, but these patents either from application still from being
System performance indications require to suffer from essential difference with this patent；In addition the paper in Song hundred age mentions the diesel engine electric of two-node cluster hot backup
Sub-speed regulator, but accurately do not mention the driving demand of above-mentioned twin coil actuator.Two controllers, drivings turn
Fishplate bar and a twin coil actuator constitute a set of dual-machine hot backup system.
Summary of the invention
It is an object of the invention to provide a kind of diesel engine two-node cluster hot backup electronic governor actuator drive circuit.
The object of the present invention is achieved like this:
A kind of diesel engine two-node cluster hot backup electronic governor actuator drive circuit, is turned by controller end driving circuit section and driving
Fishplate bar forms, and described controller end drive circuit includes the first optocoupler G1, the first metal-oxide-semiconductor Q1, the first Zener diode Z1,
Second sustained diode 2, the first divider resistance R1, the 4th divider resistance R4 and the second current-limiting resistance R2, the 3rd current-limiting resistance
R3；Described driving keyset includes that drive circuit and logic control circuit two parts, described driving keyset end drive circuit include
Second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3, the 5th coil drive select chip U5, the first diode D1, the 3rd diode
D3, the 5th current-limiting resistance R5, the 9th current-limiting resistance R9；Described logic control circuit includes that the one or eight selects a data selector U1
A data selector U4, the second edge D flip-flop U2, the three or two input and door U3 and the 7th pull-up resistor is selected with the four or eight
R7, the 8th pull-up resistor R8；It is characterized in that:
The pin 1 of the first optocoupler and the second optocoupler is connected on VCC by the second resistance R2 and the tenth resistance R10 respectively, the first light
The pin 2 of coupling G1 is connected on pulse-width signal input port PWM, and the pin 2 of the second optocoupler G2 is connected to microcontroller
The pwm signal delivery outlet of device；The pin 4 of the first optocoupler G1 and the second optocoupler G2 is respectively by the first divider resistance R1 and the
11 divider resistance R11 are connected on+24V, the pin 3 of the first optocoupler G1 and G2 respectively by the 4th divider resistance R4 and
13rd divider resistance R13 is connected on GND, and the first Zener diode Z1 and the second divider resistance Z2 is electric with the 4th dividing potential drop respectively
Resistance R4, the 13rd divider resistance R13 are in parallel, limit the gate voltage being added on metal-oxide-semiconductor, the first optocoupler G1 and the second optocoupler
G2 by being connected to the first metal-oxide-semiconductor Q1 and the base stage of the 4th metal-oxide-semiconductor Q4 by the 3rd resistance R3 and the 12nd resistance R12 respectively,
First metal-oxide-semiconductor Q1 and the former pole of the 4th metal-oxide-semiconductor Q4, drain electrode are connected respectively to 24V voltage and the second sustained diode 2 and
In 4th sustained diode 4, the other end of the second sustained diode 2 and the 4th sustained diode 4 is the most respectively and first coil
L1, the first driving positive pole DRIVE1+ and second of the second coil L2 drive positive pole DRIVE2+ to be connected；
Drive the annexation of keyset end drive circuit: include driving and select chip TPS2812 and the second metal-oxide-semiconductor Q2 and the
Three metal-oxide-semiconductor Q3；Drive and select the pin 2 of chip TPS2812 and pin 4 to be connected respectively to drive plate logic circuit two input
With output pin 3 and the pin 6 of door chip U3, drive and select the pin 7 of chip TPS2812 and pin 5 to pass through the 5th respectively
Resistance R5 and the 9th resistance R9 is connected to the second metal-oxide-semiconductor Q2 and the base stage of the 3rd metal-oxide-semiconductor Q3, the second metal-oxide-semiconductor Q2 and
The source electrode of the 3rd metal-oxide-semiconductor Q3 is connected to 24V voltage by the first diode D1 and the 3rd diode D3 respectively, the 2nd MOS
The source electrode of pipe Q2 and the 3rd metal-oxide-semiconductor Q3 is connected to the first negative pole DRIVE1-and the second negative pole DRIVE2-of coil drive
On, the drain electrode of the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3 is connected to GND；First coil L1 of twin coil actuator and
The first positive pole DRIVE1+ and the second positive pole DRIVE2+ of the second coil L2 are connected to control panel end drive circuit, first coil
The first negative pole DRIVE1-and the second negative pole DRIVE2-of L1 and the second coil L2 is connected to drive keyset end drive circuit；
Keyset end logic circuit is driven to be selected a data selector U1 and the four or eight to select a data selector U4, edge D by the one or eight
Trigger U2 and two input forms with door U3, and annexation is: the one or the eight control end pin 11 selecting a data selector U1,
Pin 10 and pin 9 are connected respectively to control logic output terminal mouth A0, A1, A2 of the first controller, and the four or eight selects data
Selector U4 control end pin 11, pin 10 and pin 9 be connected respectively to second controller control logic output terminal mouth B0,
B1、B2；One or eight selects a data selector U1 and the four or eight to select data input pin D0～D4, the D6 of a data selector U4
It is connected to GND, D5 with D7 and is connected to VCC；One or eight select a data selector U1 and the four or eight to select a data selector U4
Output pin 5 be connected respectively to the input of two inputs and door U3A and two inputs and door U3B；Edge D flip-flop U2A
Pin 4 and pin 6 be commonly connected to the control logic output terminal B3 of second controller, the pin of edge D flip-flop U2B
14 and pin 16 be then commonly connected to the first controller control logic output terminal A3, edge D flip-flop U2A output connect
To an input pin 1 of two inputs with door U3A, the output of edge D flip-flop U2B is connected to two inputs and door U3B's
One input pin 5, two inputs are pulled up by the 7th resistance R7 and the 8th resistance R8 respectively with pin 1 and the pin 5 of door U3
To high level, two inputs are connected to drive the pin 2 of plate end drive circuit driving chip U5 with the output pin 3 of door U3A,
Two inputs are connected to drive the pin 4 of plate end drive circuit driving chip U5 with the output pin 6 of door U3B；
Described the one or eight selects the control end A0 of a data selector U1, control end A1, control end A2 to connect master controller respectively
I/O pin on, when three pins of controller export 101, being strobed of D5 data pin, U1 exports high level, limit
Along PR and the B3 pin of CLK pin connection second controller of d type flip flop U2A, when system is working properly, B3 is low electricity
Flat, edge D flip-flop U2A exports high level, and the output of U1 and U2A is connected to coil after two inputs with door U3 and drives
Dynamic selection chip U5, U5 output high level drives metal-oxide-semiconductor Q2, Q2 conducting；Actuator coil L1 connecting line connects respectively
To DRIVE1+ and DRIVE1-, actuator coil L1 is controlled by the pwm signal of controller 1；Event is there is when controlling loop 1
Hindering, the I/O pin B3 of second controller is high level by low level upset, when the CLK pin of U2A has a rising edge then
Output pin Q is locked as identical with pin D, and pin D ground connection, ground, edge trigger output low level, two input and doors
U3A output low level, then metal-oxide-semiconductor Q2 cut-off, control loop 1 and disconnect, passively cutting out of fault loop.
Two inputs are pulled up as high level by pull-up resistor R7 and R8 with 1 pin of door U3A and 5 pin of U3B.
Controller end drive circuit be metal-oxide-semiconductor Q1 be that voltage opens form, mated by the resistance of divider resistance R7 and R4
For the cut-in voltage of metal-oxide-semiconductor Q1, prevent that cut-in voltage is too high with the addition of Zener diode Z1 on circuit.
Metal-oxide-semiconductor Q2 and Q3 in keyset end drive circuit is driven to be in when fault-free and turn on.
The beneficial effects of the present invention is: under normal operating conditions, two-way coil can work alone；Event is realized under malfunction
Barrier controls passively cutting out of loop, it is achieved Fault Isolation, it is ensured that the diesel engine no shutdown under malfunction runs continuously.Realize event
It is that edge D flip-flop and eight selects a data selector that barrier loop passively cuts out the core of function, the latch function of edge D flip-flop
Ensure that the reliable output in Fault Control loop.Controlling changeover section control circuit to be realized by analog device, reliability is high.
Accompanying drawing explanation
Fig. 1 is controller end drive circuit；
Fig. 2 is for driving keyset end logic circuit；
Fig. 3 is for driving keyset end drive circuit；
Fig. 4 position dual-machine hot backup system layout drawing；
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described further.
The invention provides a kind of two-node cluster hot backup electronic governor actuator drive circuit, mainly by controller end drive circuit portion
Divide and drive switch control circuit two parts composition.Its middle controller end drive circuit includes optocoupler G1, metal-oxide-semiconductor Q1,
One Zener diode Z1, sustained diode 2, divider resistance R1, R4 and current-limiting resistance R2, R3；Wherein drive switching
Control circuit includes metal-oxide-semiconductor Q2, Q3, and coil drive selects chip U5, diode D1, D3, current-limiting resistance R5, R9
Two eight are selected data selector U1 and U4, an edge D flip-flop U2, a dual input and door U3 and pull-up resistor
R7、R8.The present invention proposes a kind of diesel engine two-node cluster hot backup electronic governor actuator drive circuit, the input of optocoupler G1
End is connected with the pwm signal of single-chip microcomputer, and optocoupler G1 output produces 9V Control of Voltage MOS by divider resistance R1, R4
The break-make of pipe Q1, the break-make of metal-oxide-semiconductor Q2 and Q3 is produced with door by data selector, edge D flip-flop and two inputs
Driving enable signal select chip controls by coil drive.This circuit is capable of two-node cluster hot backup electron speed regulator twin coil
The driving of actuator, it is possible to when realizing fault-free, two coils of actuator work alone, and fault machine during unit fault passively cuts out,
Normal controller works on.
The present invention designs the drive circuit of a kind of two-node cluster hot backup electron speed regulator twin coil actuator, it is achieved twin coil is the most independent
Running and fault coil passively cuts out, normal coil works on, it is achieved under failure condition, diesel engine no shutdown stable and continuous is run,
Improve system reliability and availability.
The object of the present invention is achieved like this:
A kind of two-node cluster hot backup electron speed regulator redundancy twin coil actuator driven circuit, is characterized in that: mainly driven by controller end
Dynamic circuit part and driving keyset two large divisions composition.Described controller end drive circuit includes optocoupler G1, metal-oxide-semiconductor Q1,
Zener diode Z1, sustained diode 2, divider resistance R1, R4 and current-limiting resistance R2, R3, each controller is at least
Have a controller end drive circuit module；Described driving keyset includes drive circuit and logic control circuit two parts, institute
State driving keyset end drive circuit and include that metal-oxide-semiconductor Q2, Q3, coil drive select chip U5, diode D1, D3, limit
Leakage resistance R5, R9；Described logic control circuit includes that two eight are selected data selector U1 and U4, an edge D to trigger
Device U2, one two input and door U3 and pull-up resistor R7, R8.
The annexation of controller end drive circuit is such that the pin 1 of optocoupler G1 and G2 respectively by R2 and R10 even
Receiving on VCC, the pin 2 of optocoupler G1 is connected on pulse-width signal input port PWM, the pin 2 of optocoupler G2
It is connected to the pwm signal delivery outlet (see Fig. 4) of microcontroller.The pin 4 of optocoupler G1 and G2 passes through divider resistance respectively
R1 and R11 is connected on+24V, and the pin 3 of optocoupler G1 and G2 is connected to GND by divider resistance R4 and R13 respectively
On, Zener diode Z1 and Z2 is in parallel with R4 and R13, in order to limit the gate voltage being added on metal-oxide-semiconductor, light respectively
Coupling G1 and G2 by being connected to the base stage of metal-oxide-semiconductor Q1 and Q4 respectively by R3 and R12, the former pole of metal-oxide-semiconductor and drain electrode
Be connected respectively in 24V and sustained diode 2 and D4, the other end of sustained diode 2 and D4 the most respectively with coil L1
It is connected with driving positive pole DRIVE1+ with DRIVE2+ of coil L2.
The annexation driving keyset end drive circuit is such that mainly including driving selecting chip TPS2812 and MOS
Pipe Q2 and Q3 (see Fig. 3).Drive and select the pin 2 of chip TPS2812 and pin 4 to be connected respectively to drive plate logic electricity
Road two inputs two output pins 3 with door chip U3 and pin 6, drives pin 7 and the pin 5 selecting chip TPS2812
Be connected to the base stage of metal-oxide-semiconductor Q2 and Q3 respectively by R5 and R9, the source electrode of metal-oxide-semiconductor Q2 and Q3 passes through the most respectively
Diode D1 and D3 is connected to 24V, and the source electrode of metal-oxide-semiconductor Q2 and Q3 is connected to the negative pole DRIVE1-of coil drive simultaneously
With on DRIVE2-, the drain electrode of metal-oxide-semiconductor Q2 and Q3 is connected to GND.The coil L1 and coil L2 of twin coil actuator
Positive pole DRIVE1+ and DRIVE2+ be connected to control panel end drive circuit, the negative pole DRIVE1-of coil L1 and coil L2
It is connected to drive keyset end drive circuit (see Fig. 4) with DRIVE2-.
Keyset end logic circuit is driven to be selected data selector U1 and U4, edge D flip-flop U2 and two inputs by two eight
Forming (see Fig. 2) with door U3, annexation is such that eight and selects the control end pin 11 of a data selector U1, pin
10 and pin 9 be connected to control logic output terminal mouth A0, A1, A2 of controller 1, eight select the control of a data selector U4
End pin 11 processed, pin 10 and pin 9 are connected to control logic output terminal mouth B0, B1, B2 of controller 2；Eight select a number
It is connected to GND, D5 according to data input pin D0～D4, D6 and D7 of selector U1 and U4 and is connected to VCC.Eight select one
The output pin 5 of U1 and U4 of data selector is then connected respectively to the input of two inputs and door U3A and U3B.Edge
The pin 4 of d type flip flop U2A and pin 6 are then commonly connected to the control logic output terminal B3, edge D of controller 2 and trigger
The pin 14 of device U2B and pin 16 are then commonly connected to the control logic output terminal A3, edge D flip-flop U2A of controller 1
Output be connected to an input pin 1 of two inputs and door U3A, the output of edge D flip-flop U2B is connected to two inputs
With an input pin 5 of door U3B, two inputs are pulled up by resistance R7 and R8 respectively with pin 1 and the pin 5 of door U3
To high level, two inputs are connected to drive the pin 2 of plate end drive circuit driving chip U5 with the output pin 3 of door U3A,
Two inputs are connected to drive the pin 4 of plate end drive circuit driving chip U5 with the output pin 6 of door U3B.
Two-node cluster hot backup electron speed regulator twin coil actuator driven circuit is achieved in that by described circuit connecting relation, eight
Three controls end A0, A1, A2 selecting a data selector U1 connect on the I/O pin of master controller, by the company of circuit respectively
Connecing relation (see Fig. 2) and eight selects the truth table (being shown in Table 2) of a data selector only when three pin outputs 101 of controller
Time, being strobed of D5 data pin, U1 just can export high level, the PR of edge D flip-flop U2A and CLK pin even
Connecing the B3 pin of controller 2, when system is working properly, B3 is low level, and edge D flip-flop U2A exports high level, U1
Output with U2A is connected to coil drive after two inputs with door U3 and selects chip U5, U5 output high level to drive MOS
Pipe Q2, Q2 turn on.Actuator coil L1 connecting line is connected respectively to DRIVE1+ and DRIVE1-(see Fig. 4), actuator
The duty of coil L1 is only controlled by the pwm signal of controller 1.Break down the IO of then controller 2 when controlling loop 1
Pin B3 is high level by low level upset, by the operating characteristic (being shown in Table 1) of edge D flip-flop, when the CLK of U2A draws
When pin has a rising edge, then output pin Q is locked as identical with pin D, and pin D ground connection, the trigger output of ground, edge
Low level, two inputs and door U3A output low level, then metal-oxide-semiconductor Q2 cut-off, control loop 1 and disconnect, fault loop
Passively cut out.
Two-node cluster hot backup electron speed regulator twin coil actuator driven circuit also includes:
1, two inputs pull up as high level with 1 pin of door U3A and 5 pin of U3B by pull-up resistor R7 and R8, it is ensured that
When only one of which controller connects, system also is able to normally work.
2, controller end drive circuit be metal-oxide-semiconductor Q1 be voltage open form, by the resistance of divider resistance R7 and R4
Joining the cut-in voltage for metal-oxide-semiconductor Q1, in order to prevent, cut-in voltage is too high with the addition of Zener diode Z1 on circuit, it is ensured that
Metal-oxide-semiconductor is opened reliably.
3, metal-oxide-semiconductor Q2 and Q3 in keyset end drive circuit is driven to be in when fault-free and turn on, the choosing of metal-oxide-semiconductor
Type needs to use standard type selecting as the sustained ceiling current of metal-oxide-semiconductor Q2 and Q3 according to fall volume according to the operating current of actuator,
Otherwise may result in metal-oxide-semiconductor to burn because of overheated.
Below in conjunction with Fig. 1～4, and the present invention is described in more detail by table 1, table 2.Table 1 is edge D flip-flop truth table；
Table 2 is eight truth tables selecting a data selector.
Specifically include with lower part in conjunction with Fig. 1～4 two-node cluster hot backup electron speed regulator redundancy twin coil actuator driven circuit:
Controller end drive circuit is positioned on controller (see Fig. 4), and wherein metal-oxide-semiconductor Q1 is controlled by the pwm signal of single-chip microcomputer.
An at least road controller end drive circuit on one controller of two-node cluster hot backup electron speed regulator.Control keyset is driven mainly to wrap
Including driving keyset end logic circuit and drive keyset end drive circuit, one piece of driving control keyset contains two-way and drives,
Drive two coils, drive keyset to be controlled by four common I/O pin of single-chip microcomputer.Keyset is driven to be equivalent to the driving at coil
With the addition of one on loop to be switched by monolithic processor controlled combinational logic, combinational logic circuit function is to realize often switching under fault-free
Closed state, under malfunction, fault loop passively cuts out.Situation time breaking down in loop 2 that the most just controls illustrates drives
The workflow of dynamic circuit.
When active and standby controller is the most working properly, two actuator coil work simultaneously.The both positive and negative polarity of actuator is connected respectively to
DRIVE1+ and DRIVE1-, only when controller end metal-oxide-semiconductor Q1 and driving keyset Q2 simultaneously turns on, coil just can lead to
Electricity.Controller produces pwm signal and is connected on the pin 2 of optocoupler G1, and 1 pin of optocoupler G1 is by current-limiting resistance R2 even
Meeting VCC, the optocoupler conducting when pwm signal is low level, according to optocoupler characteristic, then between 3 pin and 4 pin of optocoupler G1
It is also switched on, according to the resistance of voltage divider principle configuration resistance, makes the voltage of the pin 3 of optocoupler G1 be more than the cut-in voltage of metal-oxide-semiconductor,
Metal-oxide-semiconductor turns on.When PWM is that high level optocoupler can not turn on, and pin 3 voltage of optocoupler G1 is 0V, metal-oxide-semiconductor Q1
Cut-off.
The metal-oxide-semiconductor Q2 of driving keyset is by driving driving Enable Pin 2 pin and 4 foot control systems selecting chip U5, when driving makes
Can end 2 pin input high level, the then 7 pin output 12V high level of coil drive selection chip U5, metal-oxide-semiconductor Q2 conducting；
When driving Enable Pin 2 pin input low level, then coil drive selects 7 pin output 0V low level, the then MOS of chip U5
Pipe Q2 ends；Drive that Enable Pin 2 pin connects is the output of combinational logic circuit, drive on keyset the conducting of metal-oxide-semiconductor with
Cut-off is decided by the output of combinational logic circuit.
Keyset logic circuit is driven to be selected a data selector U1, U4, edge D flip-flop U2 and two inputs and door U3 by eight
Composition, is selected the truth table (see Fig. 2 and Biao 2) of a data selector to understand only when eight by the annexation and eight of logic circuit
When selecting control pin A0, A1 and A2 input high level, low level, high level respectively of a data selector U1, i.e. A0A1A2
When being output as 101, eight select the output 5 pin Y1 output of the data selector U1 input equal to 14 pin D5.U1
14 pin D5 be connected to VCC, when the control pin A0A1A2 of therefore and if only if U1 inputs 101, the high electricity of U1 output
Flat.The truth table of edge D flip-flop as shown in Figure 4, when the 2 pin CLR input high levels of edge D flip-flop U2,6
During pin PR input low level, 8 pin Q are output as high level, are the upper of high level when 4 pin CLK are overturn by low level
Rise along time, the output of 8 pin Q will locking equal to the input of 3 pin D.
When controller 1 and controller 2 are the most working properly, two coils are all devoted oneself to work, and now controller 1 is connected to A0A1A2
Pin output 101, B3 pin output low level 0, according to the operation principle of logic circuit, now eight select one data select
Selecting device U1 and export high level, edge D flip-flop output U2A exports high level, then is understood this by the truth table of two inputs with door
Time U3 3 pin output high level, then metal-oxide-semiconductor Q2 conducting, now coil L1 is controlled by controller end drive circuit PWM
Signal.In like manner, eight select a data selector U4 the I/O pin B0B1B2 of controller 2 corresponding for control pin A0A1A2
Input 101, A3 pin input low level, metal-oxide-semiconductor Q3 turns on, and the operating condition value of coil L2 is controlled by controller 2
Pwm signal.Two coils can independent operating simultaneously.
When breaking down in controller 2 loop, it is desirable to L2 loop quits work under the control of controller 1 and passively cuts out.
The I/O pin A3 then having only to controller 1 is high level by low level upset, and 16 pin CLK of edge D flip-flop have one
Individual rising edge, according to the operation principle of edge D flip-flop, the 13 pin Q outputs of edge D flip-flop U2B are locked into low
Level, two inputs and the 6 pin output low levels of door U3B, metal-oxide-semiconductor Q3 ends, the most no matter the B0B1B2 of controller 2
Being what state with the PWM of backup machine, coil L2 quits work, it is achieved passively cutting out of Fault Control circuit controls power.
Table 1
Table 2
Claims (5)
1. a diesel engine two-node cluster hot backup electronic governor actuator drive circuit, it is made up of controller end driving circuit section and driving keyset, described controller end drive circuit includes the first optocoupler (G1), first metal-oxide-semiconductor (Q1), first Zener diode (Z1), second fly-wheel diode (D2), the first divider resistance (R1), the 4th divider resistance (R4) and the second current-limiting resistance (R2), the 3rd current-limiting resistance (R3)；Described driving keyset includes drive circuit and logic control circuit two parts, described driving keyset end drive circuit includes that the second metal-oxide-semiconductor (Q2), the 3rd metal-oxide-semiconductor (Q3), the 5th coil drive select chip (U5), first diode (D1), the 3rd diode (D3), the 5th current-limiting resistance (R5), the 9th current-limiting resistance (R9)；Described logic control circuit includes that the one or eight selects a data selector (U1) and the four or eight to select a data selector (U4), second edge D flip-flop (U2), the three or two input and door (U3) and the 7th pull-up resistor (R7), the 8th pull-up resistor (R8)；It is characterized in that:
The pin 1 of the first optocoupler and the second optocoupler is connected on VCC by the second resistance (R2) and the tenth resistance (R10) respectively, the pin 2 of the first optocoupler (G1) is connected on pulse-width signal input port PWM, and the pin 2 of the second optocoupler (G2) is connected to the pwm signal delivery outlet of microcontroller；nullThe pin 4 of the first optocoupler (G1) and the second optocoupler (G2) is connected on+24V by the first divider resistance (R1) and the 11st divider resistance (R11) respectively，The pin 3 of the first optocoupler (G1) and (G2) is connected on GND by the 4th divider resistance (R4) and the 13rd divider resistance (R13) respectively，First Zener diode (Z1) and the second divider resistance (Z2) respectively with the 4th divider resistance (R4)、13rd divider resistance (R13) is in parallel，Limit the gate voltage being added on metal-oxide-semiconductor，First optocoupler (G1) and the second optocoupler (G2) are by being connected to the first metal-oxide-semiconductor (Q1) and the base stage of the 4th metal-oxide-semiconductor (Q4) by the 3rd resistance (R3) and the 12nd resistance (R12) respectively，First metal-oxide-semiconductor (Q1) and the former pole of the 4th metal-oxide-semiconductor (Q4)、Drain electrode is connected respectively on 24V voltage and the second fly-wheel diode (D2) and the 4th fly-wheel diode (D4)，The other end of the second fly-wheel diode (D2) and the 4th fly-wheel diode (D4) the most respectively with first coil (L1)、First driving positive pole (DRIVE1+) of the second coil (L2) drives positive pole (DRIVE2+) to be connected with second；
Drive the annexation of keyset end drive circuit: include driving selection chip TPS2812 and the second metal-oxide-semiconductor (Q2) and the 3rd metal-oxide-semiconductor (Q3)；nullDrive and select the pin 2 of chip TPS2812 and pin 4 to be connected respectively to drive plate logic circuit two input and the output pin 3 of door chip (U3) and pin 6，Drive and select the pin 7 of chip TPS2812 and pin 5 to be connected to the second metal-oxide-semiconductor (Q2) and the base stage of the 3rd metal-oxide-semiconductor (Q3) by the 5th resistance (R5) and the 9th resistance (R9) respectively，The source electrode of the second metal-oxide-semiconductor (Q2) and the 3rd metal-oxide-semiconductor (Q3) is connected to 24V voltage by the first diode (D1) and the 3rd diode (D3) respectively，The source electrode of the second metal-oxide-semiconductor (Q2) and the 3rd metal-oxide-semiconductor (Q3) is connected on the first negative pole (DRIVE1-) and second negative pole (DRIVE2-) of coil drive，The drain electrode of the second metal-oxide-semiconductor (Q2) and the 3rd metal-oxide-semiconductor (Q3) is connected to GND；The first coil (L1) of twin coil actuator and first positive pole (DRIVE1+) of the second coil (L2) and the second positive pole (DRIVE2+) are connected to control panel end drive circuit, and first negative pole (DRIVE1-) of first coil (L1) and the second coil (L2) and the second negative pole (DRIVE2-) are connected to drive keyset end drive circuit；
Keyset end logic circuit is driven to be selected a data selector (U1) and the four or eight to select a data selector (U4) by the one or eight, edge D flip-flop (U2) and two inputs form with door (U3), annexation is: the one or eight selects the control end pin 11 of a data selector (U1), pin 10 and pin 9 are connected respectively to the control logic output terminal mouth A0 of the first controller, A1, A2, four or the eight control end pin 11 selecting a data selector (U4), pin 10 and pin 9 are connected respectively to the control logic output terminal mouth B0 of second controller, B1, B2；One or eight selects a data selector (U1) and the four or eight to select data input pin D0～D4, D6 and D7 of a data selector (U4) to be connected to GND, D5 is connected to VCC；One or eight select a data selector (U1) and the four or eight to select the output pin 5 of a data selector (U4) to be connected respectively to two inputs inputs the input with door (U3B) with door (U3A) and two；nullThe pin 4 of edge D flip-flop (U2A) and pin 6 are commonly connected to the control logic output terminal (B3) of second controller，The pin 14 of edge D flip-flop (U2B) and pin 16 are then commonly connected to the control logic output terminal (A3) of the first controller，The output of edge D flip-flop (U2A) is connected to an input pin 1 of two inputs and door (U3A)，The output of edge D flip-flop (U2B) is connected to an input pin 5 of two inputs and door (U3B)，Two inputs are pulled upward to high level by the 7th resistance (R7) and the 8th resistance R8 respectively with pin 1 and the pin 5 of door U3，Two inputs are connected to drive the pin 2 of plate end drive circuit driving chip (U5) with the output pin 3 of door U3A，Two inputs are connected to drive the pin 4 of plate end drive circuit driving chip (U5) with the output pin 6 of door (U3B).
A kind of diesel engine two-node cluster hot backup electronic governor actuator drive circuit the most according to claim 1, it is characterized in that: the control end A0 of a data selector (U1) is selected in described the one or eight, control end A1, control end A2 and connect on the I/O pin of master controller respectively, when three pins of controller export 101, being strobed of D5 data pin, U1 exports high level, the PR of edge D flip-flop U2A and CLK pin connect the B3 pin of second controller, when system is working properly, B3 is low level, edge D flip-flop U2A exports high level, the output of U1 and U2A is connected to coil drive after two inputs with door U3 and selects chip U5, U5 output high level drives metal-oxide-semiconductor Q2, Q2 turns on；Actuator coil L1 connecting line is connected respectively to DRIVE1+ and DRIVE1-, and actuator coil L1 is controlled by the pwm signal of controller 1；Breaking down when controlling loop 1, the I/O pin B3 of second controller is high level by low level upset, when the CLK pin of U2A has a rising edge, then output pin Q is locked as identical with pin D, and pin D ground connection, ground, edge trigger output low level, two inputs and door U3A output low level, then metal-oxide-semiconductor Q2 cut-off, controls loop 1 and disconnects, passively cutting out of fault loop.
A kind of diesel engine two-node cluster hot backup electronic governor actuator drive circuit the most according to claim 1, it is characterised in that: two inputs are pulled up as high level by pull-up resistor R7 and R8 with 1 pin of door U3A and 5 pin of U3B.
A kind of diesel engine two-node cluster hot backup electronic governor actuator drive circuit the most according to claim 1, it is characterized in that: controller end drive circuit be metal-oxide-semiconductor Q1 be voltage open form, mate the cut-in voltage for metal-oxide-semiconductor Q1 by the resistance of divider resistance R7 and R4, prevent that cut-in voltage is too high with the addition of Zener diode Z1 on circuit.
A kind of diesel engine two-node cluster hot backup electronic governor actuator drive circuit the most according to claim 1, it is characterised in that: drive metal-oxide-semiconductor Q2 and Q3 in keyset end drive circuit be in when fault-free and turn on.
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