CN104675550B - The control of the operating activity of internal combustion engine - Google Patents
The control of the operating activity of internal combustion engine Download PDFInfo
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- CN104675550B CN104675550B CN201410662880.9A CN201410662880A CN104675550B CN 104675550 B CN104675550 B CN 104675550B CN 201410662880 A CN201410662880 A CN 201410662880A CN 104675550 B CN104675550 B CN 104675550B
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Abstract
Disclose a kind of method and system for being used to control the execution of the operating activity of the movable part during each or some combustion periods of each cylinder of multi-cylinder engine.This method comprises the following steps：The first instantaneous value in the control parameter of the first discrete instants is gathered by sensor unit, generation includes representing the first packet of the data of the first gathered instantaneous value and the value of the internal clocking of sensor unit, by the first packet via communication network transmission to the control unit with the internal clocking synchronous with the internal clocking of sensor unit, and use the execution of control unit control operating activity.Control unit controls the execution of operating activity by being extrapolated to the data that at least part is obtained from the first packet.It thus provides the method for the simple and robust of control operating activity.
Description
Technical field
The present invention relates to for coming in response to the control parameter changed over time during each rotation of multi-cylinder engine
Control the execution of operating activity of the movable part during each or some combustion periods of each cylinder of multi-cylinder engine
Method and/or system.
Background technology
To the execution of the operating activity of movable part during each combustion period of each cylinder in multi-cylinder engine
Accurate timing and control are instantaneous angular positions very crucial and dependent on the crank axle for being directly linked to piston position
Information update and accurate.Each combustion period whne the operating activity with time control for example including fuel injection when
Carve, igniting at the time of and intake valve and air bleeding valve actuating at the time of and lubricating oil and compressed air to the supply of cylinder when
Carve.
The control method and system of type belonging to the present invention are well known in the art, such as from Japan Patent
JP5143939B2 understands that the Japan Patent belongs to the applicant and discloses a kind of control system, control system collection control
The value of parameter processed, collection value is transmitted via telecommunication network, and is generated using by determining transmission time in a network
Compensation factor compensate the collection value.By finding the difference between the reception time in the acquisition time and control unit of value
To determine transmission time.
However, determine that the reception time in a control unit is complicated, and it needs additional specialized hardware.
Additional specialized hardware further increases the risk of the failure in system.
Therefore provide for the operating activity during controlling each combustion period in each cylinder of multi-cylinder engine
Simpler and more robust method and/or system be still problem.
The content of the invention
According in a first aspect, the present invention relates to in response to being changed over time during each rotation of multi-cylinder engine
Control parameter control operating activity of the movable part during each combustion period of each cylinder of multi-cylinder engine
The method of execution, comprises the following steps：
The of the control parameter of the first discrete instants during each combustion period is gathered by first sensor unit
One instantaneous value, wherein the first sensor unit has internal clocking；
The first packet is generated, the first packet includes representing the first collected instantaneous value and the institute of the control parameter
The data of the internal clocking of first sensor unit in the value of first discrete instants are stated, obtain empty in time/parameter
Between in first point；
By first packet via communication network transmission to the first control unit, wherein first control unit has
There is the internal clocking synchronous with the internal clocking of the first sensor unit；
The first estimate of the time rate of change of the control parameter is obtained in first control unit；
Wherein, methods described is further comprising the steps of：
Estimate in first control unit：
The control parameter is being located in the value of the first selected discrete instants wherein the described first selected discrete instants are bases
The value of the internal clocking of the control unit of time first of reason carrys out selection, rather than directly according to first packet described
The reception time in first control unit carrys out selection；Or
The value of the internal clocking of the first control unit when the value of the control parameter makes it；
Wherein by using the control parameter obtained time rate of change the first estimate directly extrapolation when
Between/parameter space in described first point estimate the control parameter in the value of discrete instants or first selected by described first
The value of the internal clocking of control unit, and wherein when the value for estimating the control parameter has met or exceeded the predetermined mesh
When mark or the internal clocking of the first control unit have met or exceeded estimated value, start operating activity.
It thus provides a kind of method, thus can not need deterministic communication network or controlled for detecting first
The operating activity in internal combustion engine is controlled in the case of the device of reception time in unit.
This method, which is also enabled, uses the processing unit of uncertainty as control unit, because the reception in processing unit
Change time lag between time and the time of processing does not influence on the precision of this method.
This allows to perform multiple tasks using single processing unit, and such as the first control unit may include to be configured as control
The single processing unit of the operating activity of all cylinders in internal combustion engine processed.
Communication network can be with the deterministic communication network of right and wrong, i.e., transmission time wherein in a network is random communication
Network, such as network based on Ethernet.
The use of uncertainty communication network allows using standarized component and reduce further installation cost, because not
Need in a network a little between private link, you can use the network switch.It can use and be related to JP5143939B2
In Fig. 2 disclosed in method or other methods (such as IEEE1588) come clock and the first control of synchronous first sensor unit
The clock of unit.
Any kind of extrapolation can be used, for example linearly or nonlinearly model.
In certain embodiments, the first packet is that non-deterministic mode is received in the first control thus to receive the time
In unit.
First control unit can have uncertainty processing time, i.e. the reception time in the first packet and the first data
The time lag of processing unit between the time-triggered protocol of the data of bag can be deterministic with right and wrong, i.e., first processing units may include tool
The queue of the length changed.
First control unit may include single processing unit.Alternatively, the first control unit may include multiple processing units,
The decentralized processing unit being communicatively coupled with CPU, wherein decentralized processing can be for example set near each cylinder
The internal clocking of unit is synchronous with the internal clocking of CPU.
First estimate of time rate of change can be obtained by first sensor unit, and the quilt in the first packet
It is sent to the first control unit.Alternatively/additionally, the first estimate of time rate of change can be obtained by the first control unit,
For example obtained by handling two or more points in time/parameter space.
First packet can be generated by first sensor unit.
In a preferred embodiment, the instantaneous value of control parameter includes and starting that the piston component of each cylinder is connected
The instantaneous position of machine crank axle.
Therefore, special advantage point that can be in combustion period is with the execution of high accuracy startup operating activity.
Predeterminated target can be the precalculated position of engine crankshaft.Generally start operating activity in the first control unit
There are control gains between performing the actual moment of operating activity in moment and active member.Therefore, may be selected predeterminated target so as to
Consider the control gains.Because control gains typically at least part and the speed onrelevant of engine, can be according to engine speed
Spend to select predeterminated target, such as under high engine speed, predeterminated target is compared to predetermined mesh at low engine speeds
Mark can (under high engine speed, compared to low engine speed, control gains cause the further of crank axle with somewhat smaller
Rotation).
In certain embodiments, this method is further comprising the steps of：
Pass through second discrete instants acquisition control parameter of the first sensor unit during each combustion period
Second instantaneous value, second discrete instants are after first discrete instants；
The second packet is generated, the second packet includes the second instantaneous value and the institute of the gathered expression control parameter
The data of the internal clocking of first sensor unit in the value of second discrete instants are stated, obtain empty in time/parameter
Between in second point；
Second packet is transferred to first control unit via communication network；
If wherein having reached the predeterminated target or first control unit in the value for estimating the control parameter
Internal clocking reached after the estimate and to handle the second packet for specific combustion period, then without using the second number
Operating activity is controlled in the case of according to the data in bag, and
If reached in the value for estimating the control parameter in the predeterminated target or first control unit
Portion's clock handles the second packet before having reached the estimate for the specific combustion period, then using the second packet
In data control operating activity.
Therefore, or even when second data-bag lost or evening arrival first control unit, institute can also be controlled
State operating activity.
This permission controls operating activity, i.e. the first packet to provide high reliability with high accuracy and high reliability, and
Second packet provides high accuracy.
In addition, even operating activity can also be controlled when the first packet or the second packet are damaged.
Can be in the case of the data in using the second packet, by with the side with the data in the first packet of processing
The corresponding mode of formula handles the data in the second packet, i.e., by the second point extrapolated in time/parameter space come
Control operating activity.First estimate of up time rate of change or the second estimate of time rate of change come the time of extrapolating/
Second point in parameter space.Below equation can be used to obtain the second estimate of time rate of change：
Wherein pt2It is the second estimate of time rate of change, Δ p is the control in the first discrete instants and the second discrete instants
It is poor between the value of parameter processed, and Δ t is the time between the first discrete instants and the second discrete instants.
In certain embodiments, thus to gather control in the way of less than the 99.9% of time, 99.5%, 99% or 95%
Second instantaneous value of parameter processed, first processing units tool before the execution of operating activity is started has time to processing second
Packet.
This can be completed by gathering the second instantaneous value very close to predeterminated target, i.e. the second instantaneous value can be predetermined
And the second discrete instants can be between combustion period change.
In certain embodiments, by thus in the time of at least 99.9%, 99.5% or 99% in the way of acquisition control join
Several first instantaneous values, first processing units have before control parameter makes it has time to the number of processing first
According to bag.
This can have the first instantaneous value of big distance to complete by gathering with predeterminated target, i.e. the first instantaneous value is pre-
Fixed and the first discrete instants can be change between combustion period.
In certain embodiments, this method is further comprising the steps of：
After the operating activity is started in combustion period, joined by the first sensor unit acquisition control
The validation value of particular moment of the number during the combustion period；
First verification data bag is generated, the first verification data bag includes the validation value and the first sensor list
Value of the internal clocking of member in the particular moment, obtains the check post in time/parameter space；
The checking packet is transferred to first control unit via the communication network；
In first control unit, by described first point and/or second point with time/parameter space
Enter row interpolation to estimate testing for the discrete instants when the value of the control parameter reaches the predeterminated target between check post
Demonstrate,prove estimate；
It is determined that the difference between the checking estimate and estimate for starting operating activity, wherein using really
Fixed difference generates the correction factor for controlling the operating activity in the subsequent combustion cycle.
Consequently, because error generally has repeatable property, the precision of this method can be improved over time.This is further
Allow the system to adapt to new error source, make the system more robust.When method is used in the internal combustion engine of ship, this
It is even more important, because engine may need one-time continuous to operate several days or a few weeks.
In certain embodiments, this method is further comprising the steps of：
By being positioned in the active member sensor unit at the active member to measure during combustion period
Discrete instants when active member performs the operating activity are stated, wherein the active member sensor unit has and described the
The synchronous internal clocking of the internal clocking of one control unit；
Generation includes the second checking packet of measured discrete instants；
The described second checking packet is sent to first control unit via communication network, wherein first control
Unit processed generates the correction factor for subsequent combustion period by handling the second checking packet.
Therefore, it can further improve the precision of this method.This further allows at least part self calibration this method, thus may be used
Reduce installation cost.
In certain embodiments, first control unit by estimate from by the first control unit start operating activity to
The operating activity by the active member it is actual perform when control gains, to generate the correction factor.
Correction factor can be used to change the predeterminated target of the control parameter for subsequent combustion period, if for example controlled
Time lag increases, then reduces predeterminated target, and if control gains reduce, then increase predeterminated target.
In certain embodiments, predeterminated target is selected according to the speed of engine and the estimate of control gains.
In certain embodiments, the second sensor unit of redundancy additionally gathers the value of the control parameter and by institute
State value and be transferred to control unit.
The second sensor unit of redundancy can communicate via communication network with the second control unit of redundancy, wherein redundancy
Second control unit of second sensor unit and redundancy performs corresponding with first sensor unit and the first control unit dynamic
Make, thus full redundancy is provided.
Therefore it provides more robust method, because even when one of control unit and/or sensor unit are out of order,
Operating activity can also be controlled.
In certain embodiments, the control parameter gathered for each combustion period is selected according to the length of combustion period
Value quantity.
When combustion period is long compared with when combustion period is short, the control gathered for each combustion period
The quantity of the value of parameter can be higher.
It therefore, it can even at high motor speeds, in the case where not making the disposal ability overload of the first control unit,
Control operating activity.
According to second aspect, the present invention relates to in response to being changed over time during each rotation of multi-cylinder engine
Control parameter control the fortune of the movable part during each or some combustion periods of each cylinder of multi-cylinder engine
The system for turning a work dynamic execution, the system includes：
First sensor unit with internal clocking, wherein the first sensor unit is configured as in each burning
First instantaneous value of the first discrete instants acquisition control parameter during the cycle, and generate the first packet, the first packet
Including the first instantaneous value of the control parameter gathered and the internal clocking of the first sensor unit described
The value of first discrete instants, obtains at first point in time/parameter space；And
It is single with the first control for being configured as the internal clocking synchronous with the internal clocking of the first sensor unit
Member, wherein first control unit is connected to the first sensor unit via communication network and is configured as obtaining institute
The first estimate of the time rate of change of discrete parameter is stated, and wherein, the first sensor unit is configured as will be described
First packet is via the communication network transmission to first control unit；
Wherein, first control unit is configured to estimate in response to receiving first packet：
In the value of the control parameter of the first selected discrete instants, wherein the described first selected discrete instants are that basis exists
The value of the internal clocking of the control unit of time first of processing carrys out selection, rather than directly according to first packet in institute
State the reception time in the first control unit；Or
The value of the internal clocking of the first control unit when the value of the control parameter makes it；
Wherein by using the control parameter time rate of change the first estimate obtained directly extrapolation when
Between/parameter space in described first point estimate in the value of the control parameter of discrete instants selected by described first or
The value of the internal clocking of one control unit, and wherein the first control unit be configured as the first control unit estimate it is described
The internal clocking that the value of control parameter has met or exceeded the predeterminated target or the first control unit has met or exceeded and estimated
During the value of meter, start operating activity.
It thus provides a kind of simpler system, the system can not need deterministic communication network or for examining
The operating activity in internal combustion engine is controlled in the case of the device for the reception time surveyed in the first control unit.
In a preferred embodiment, the instantaneous value of control parameter includes the hair being connected with the piston component of each cylinder
The instantaneous position of motivation crank axle.
In certain embodiments, first sensor unit be additionally configured to during each combustion period second it is discrete when
The second instantaneous value (second discrete instants are after first discrete instants) of acquisition control parameter is carved, and generates the
Two packets, the second packet includes the second instantaneous value of the control parameter gathered and the first sensor unit
The internal clocking obtains the second point in time/parameter space in the value of second discrete instants, and via communication
Second packet is transferred to first control unit by network；
Wherein described first control unit is configured as：
If reached in the value for estimating the control parameter in the predeterminated target or first control unit
Portion's clock handles the second packet after having reached the estimate for specific combustion period, then without using the second packet
In data in the case of control the execution of operating activity, and
If reached in the value for estimating the control parameter in the predeterminated target or first control unit
Portion's clock handles the second packet before having reached the estimate for the specific combustion period, then using the second packet
In data control the execution of operating activity.
In certain embodiments, the first sensor unit is additionally configured to starting the fortune in combustion period
Turn a work after moving, gather the validation value of particular moment of the control parameter during the combustion period；Generation includes described
The first verification data bag of value of the internal clocking of validation value and the first sensor unit in the particular moment, is obtained
To the check post in time/parameter space；And the checking packet is transferred to described the via the communication network
One control unit；
Wherein described first control unit is configured as, by described first point and/or second point with time/parameter
Enter row interpolation between check post in space to estimate during discrete when the value of the control parameter reaches the predeterminated target
The checking estimate at quarter；And it is configured to determine in the checking estimate and the estimation for starting operating activity
Difference between value, wherein generating the school of the operating activity in the control subsequent combustion cycle using identified difference
Positive factor.
In certain embodiments, the system is also included with the internal clocking being configured as with first control unit
The active member sensor unit of synchronous internal clocking, the active member sensor is connected to institute via the communication network
The first control unit is stated,
Wherein described active member sensor is configured as measuring during combustion period described in the active member execution
Discrete instants during operating activity, what generation included measured discrete instants second verifies packet, and by described second
Checking packet is sent to first control unit,
Wherein described first control unit be additionally configured to by handle it is described second checking packet come generate correction because
Number is come for controlling the operating activity in subsequent combustion period.
In certain embodiments, first control unit is configured as by estimating to start fortune from by the first control unit
Turn a work move the operating activity by the active member it is actual perform when control gains, to generate the correction factor.
The different aspect of the present invention can be implemented by different way, the different modes are included as described above and below
The method and system for controlling operating activity that are used to control operating activity of description, each mode realize with it is above-described
The one or more benefits and advantage of the associated description of at least one aspect, and each mode is with contacting above-described
At least one aspect description and/or dependent claims disclosed in the corresponding one or more preferred realities of preferred embodiment
Apply example.Further, it will be recognized that, the embodiment of one of contact aspects described herein description is equally applicable to other side.
Brief description of the drawings
By refer to the attached drawing, further elucidated by the following illustrative and unrestricted detailed description of embodiments of the invention
The above-mentioned and/or other objects, features and advantages of the present invention, wherein：
Fig. 1 shows embodiments in accordance with the present invention, for controlling each burning week in each cylinder of multi-cylinder engine
The method of the execution of the operating activity of movable part during phase.
Fig. 2 shows embodiments in accordance with the present invention, and when the value of control parameter makes it, how control unit makes
The value of the internal clocking of the first control unit is estimated with the data from the first packet.
Fig. 3 shows embodiments in accordance with the present invention, and how control unit can estimate the control in the first selected discrete instants
The value of parameter, wherein the first selected discrete instants are the values according to the internal clocking of the first control unit when processing, and
It is not the direct reception time according to the first packet in the first control unit to select the first selected discrete instants.
Figure 4 and 5 show embodiments in accordance with the present invention, and how control unit can utilize the data from two packets.
Fig. 6 shows embodiments in accordance with the present invention, shows how the first control unit can be used from multiple packets
Data control the flow chart of the execution of the operating activity of movable part.
Fig. 7 shows embodiments in accordance with the present invention, how can to use to carry out the data of self-validation packet to improve precision.
Fig. 8-10 shows to include the schematic diagram of the internal combustion engine of control system according to an embodiment of the invention.
Embodiment
In the following description, refer to the attached drawing, accompanying drawing illustrates how the practice present invention by way of explanation.
Fig. 1 shows embodiments in accordance with the present invention, for controlling each burning week in each cylinder of multi-cylinder engine
The flow chart 100 of the method for the execution of the operating activity of movable part during phase.In first step 101, passed by first
Sensor cell gathers the first instantaneous value in the control parameter of the first discrete instants.Next, in second step 102, generation
First packet, the first packet includes representing the first value of the collection of control parameter and the first sensing in the first discrete instants
The data of the value of the internal clocking of device unit, obtain at first point in time/parameter space.Then in step 103 via
First packet is transferred to the first control unit by communication network, wherein the first control unit has and first sensor unit
The synchronous internal clocking of internal clocking.First control unit and then at step 104 the time rate of change of acquisition control parameter
First estimate.
Next, in step 105, the estimation of the first control unit：
In the value of the control parameter of the first selected discrete instants, wherein the described first selected discrete instants are that basis exists
The value of the internal clocking of the control unit of time first of processing carrys out selection, rather than directly according to first packet in institute
State the reception time in the first control unit (as contact Fig. 3 is explained)；Or when the value of the control parameter makes it
When the first control unit internal clocking value (as contact Fig. 2 explain).
Finally, in step 106, when the value for estimating the control parameter has reached that the predeterminated target or the first control are single
When the internal clocking of member has met or exceeded estimated value, start operating activity.
As mentioned before, Fig. 2 show when the value of control parameter make it 204 when, the first control unit is such as
What estimates the value of the internal clocking of the first control unit using the data from the first packet.It is illustrated that time/parameter
Space 200, the space 200 includes the first axle 201 of expression time and represents the second axle 202 of the value of control parameter.Point p1 tables
Show at first point in the time parameter space.Therefore, the first wink of the control parameter that 209 expressions are gathered in the first discrete instants
Duration, and 208 represent internal clocking in the first sensor unit (and first control unit) of the first discrete instants
Value.In order to the value for estimating when control parameter make it 204 when the first control unit internal clocking value t1, the first control
Unit processed is extrapolated first by the first estimate of the rate of change of the control parameter obtained to point p1, thus generates line
203, and it is then determined that extrapolation line 203 and represent predeterminated target line 204 between intersection point.Because the first control unit
Internal clocking it is synchronous with the internal clocking of first sensor unit, the first control unit can be simply waited for, inside it
Clock reaches t1 and then starts operating activity.Therefore, the accurate transmission time of the first packet in a communication network is not
Influence the precision of this method.Only requirement is that must be single by the first control before the internal clocking of the first control unit reaches t1
Member the first packet of processing.This allows to use uncertainty communication network, without determining transmission in a communication network
Time.
As mentioned before, Fig. 3 shows how the first control unit estimates the control ginseng in the first selected discrete instants
Several values, wherein the first selected discrete instants are the values according to the internal clocking of the first control unit when processing, without
It is the direct reception time according to the first packet in the first control unit to select the first selected discrete instants.In this method
In, the first control unit constantly keeps the estimation to the currency of control parameter, and more new estimation upon reception of the data packet
Value.Time/parameter space 300 is illustrated that, space 300 includes the first axle 301 of expression time and represents the value of control parameter
The second axle 302.Point p1 represents at first point in the time parameter space.Therefore, 309 represent what is gathered in the first discrete instants
First instantaneous value of control parameter, and 308 expressions are in the first sensor unit (and first control unit) of the first discrete instants
Internal clocking value.Line segment 306 shows to join control by what the first control unit was made before the first packet is processed
The estimate of several values.At t_proc, the first control unit is by using the first of the rate of change of the control parameter obtained
Estimate is extrapolated to p1, to handle the first packet, and updates control by assessing the extrapolation line in t_proc
The estimate of the currency of parameter processed.Period 307 shows to be done by the first control unit after the first packet is processed
The estimate of the value to control parameter gone out.When the first control unit estimates that the value of control parameter has made it 304,
Then start operating activity.Time difference between the first discrete instants 308 and t_proc330 is the first packet in communication network
In transmission time and the combination of queue in the first control unit, it is both random.
Figure 4 and 5 show how embodiments in accordance with the present invention can use the data from multiple packets to control operating
The execution of activity.
Fig. 4 show when the value of control parameter make it 404 when, how can use the data from two packets
Come the value of the internal clocking of estimating the first control unit.Time/parameter space 400 is illustrated that, space 400 includes the expression time
First axle 401 and represent control parameter value the second axle 402.Point p1 represents the time for the data being derived from the first packet
First point in parameter space, the first instantaneous value of the control parameter that 409 expressions are gathered in the first discrete instants, and 408 tables
Show the value in the internal clocking of the first sensor unit (and first control unit) of the first discrete instants.In order to make when control
The value of parameter make it 404 when the first control unit internal clocking value t1 the first estimate, the first control is single
Member is extrapolated first by the first estimate of the rate of change of the control parameter obtained to point p1, thus generates line 403,
And it is then determined that the intersection point between the line 403 of extrapolation and the line 404 of expression predeterminated target.In order to improve the precision of method,
Data of the additional use from the second packet.Point p2 is represented in the time parameter space for the data being derived from the second packet
Second point, the second instantaneous value of the control parameter that 411 expressions are gathered in the second discrete instants, and 412 represent discrete second
The value of the internal clocking of the first sensor unit (and first control unit) at moment.If the line 403 of extrapolation is correctly represented
Control parameter, then point p2 will be on 403.Then, because various errors are originated, p2 will be generally by slight shift.
In order to the value made when control parameter make it 404 when the first control unit t2 internal clocking value
Second estimate, the first control unit is entered first by the second estimate of the rate of change of the control parameter obtained to point p2
Row extrapolation, thus generate line 405, and it is then determined that extrapolation line 405 and represent predeterminated target line 404 between friendship
Point.
Because the internal clocking of the first control unit is synchronous with the internal clocking of first sensor unit, the first control unit
It can simply wait for, until its internal clocking reaches t2 and then starts operating activity.
Because the second packet includes the information relevant with the control parameter closer to predeterminated target 404, t2 will compare t1
More accurate estimation.
It should be noted that the information from more than two packet can be used, such as from least 3,4 or 5 data
The information of bag.
Fig. 5 illustrates how using the data from two packets to estimate in the first selected discrete instants and the second choosing
The value of the control parameter of discrete instants is determined, wherein the first and second selected discrete instants are according to when handling two packets the
The value of the internal clocking of one control unit carrys out selection, rather than directly according to two packet connecing in the first control unit
Between time receiving.In the method, the first control unit constantly keeps the estimation to the currency of control parameter, and ought handle number
The estimate is updated during according to bag.Time/parameter space 500 is illustrated that, space 500 includes the He of first axle 501 of expression time
Represent the second axle 502 of the value of control parameter.Point p1 represents first point in the time parameter space from the first packet,
509 represent the first instantaneous value of control parameter for being gathered in the first discrete instants, and 508 represent the of the first discrete instants
The value of the internal clocking of one sensor unit (and first control unit).Line segment 506 is shown before the first packet is processed
The estimate for the value to control parameter made by the first control unit.At t_proc, the first control unit is by using institute
First estimate of the rate of change of the control parameter of acquisition is extrapolated to p1, to handle the first packet, and by commenting
The estimate for the currency for estimating the extrapolation line in t_proc to update control parameter.It is single by the first control in order to improve precision
Data of first additional treatments from the second packet.Point p2 represents second in the time parameter space from the second packet
Point, the second instantaneous value of the control parameter that 511 expressions are gathered in the second discrete instants, and 512 represent in the second discrete instants
First sensor unit (and first control unit) internal clocking value.In t_proc2, the first control unit by using
Second estimate of the rate of change of the control parameter obtained is extrapolated to p2, to handle the second packet, and is passed through
The extrapolation line in t_proc2 is assessed to update the estimate of the currency of control parameter.Period 507 show in t_proc and
The estimate for the value to control parameter made in period between t_proc2 by the first control unit, and line segment 505 is shown
The estimate for the value to control parameter made after the second packet is processed by the first control unit.When the first control
The value of unit estimation to control parameter has made it 504, then starts operating activity.
Fig. 6 shows embodiments in accordance with the present invention, shows how the first control unit can be used from multiple packets
Data control the flow chart of the execution of the operating activity of movable part.In first step 601, estimated in the first control unit
When control parameter has made it, it is predetermined that the first control unit determines whether its internal clocking t has met or exceeded
Value T.If internal clocking t has reached predetermined value T, operating activity is started in step 602.Alternatively, the first control unit
Determine whether to have been received by new packet in step 603.
If having been received by new packet, the first control unit obtains the activity of the first control parameter in step 604
The estimate of rate of change.As contacted Fig. 2 and/or Fig. 4 explanations, the estimate sum of obtained time reorganization rate is used
According to the data (point in the time parameter space) in bag, the first control unit is determined when the value of control parameter reaches in step 605
To the new estimation value of the value of its internal clocking during predeterminated target.Then, the first control unit (defines first in time lag Δ proc
The temporal resolution of control method) return to step 601 afterwards.If the first control unit determines not receive new in step 603
Packet, then its (after time lag Δ proc) be returned directly to step 601.So if for the generation of each combustion period
First and second packets, then the value of control parameter has reached the predeterminated target as described in having been estimated in the first control unit
The second packet is handled for specific combustion period after (in step 601), then without using the number in the second packet
According to information in the case of, the execution of operating activity is controlled, and the control parameter as described in being estimated in the first control unit
Value has reached the packet of pre-treatment second of the predeterminated target, then operating activity is controlled using the data in the second packet
Execution.
Therefore, the second packet is recorded as follows：It includes the information of the control parameter very close to predeterminated target,
Because not requiring that it reaches the first control unit with the time.Therefore, the first packet can provide high reliability and the second packet
High accuracy can be provided.
It should be noted that can in software or in the combination of software and hardware complete implementation steps, such as with activity
The relevant step 601 of startup, 602 can implement within hardware, and step 603,604 and 605 can be implemented in software, and Fig. 7 shows
Go out embodiments in accordance with the present invention, how can to use to carry out the data of self-validation packet to improve precision.It is illustrated that time/ginseng
Number space 700, space 700 includes the first axle 701 of expression time and represents the second axle 702 of the value of control parameter.Point p1 tables
Show first point in the time parameter space from the data in the first packet, 709 represent to be gathered in the first discrete instants
Control parameter the first instantaneous value, and (and the first control is single for the first sensor unit that 708 represent in the first discrete instants
Member) internal clocking value.In order to the value made when control parameter make it 704 when the first control unit inside when
The value t1 of clock the first estimate, first estimate of first control unit first by the rate of change of the control parameter obtained
To be extrapolated to point p1, the line 703 of extrapolation is thus generated, and it is then determined that in the line 703 and expression predeterminated target of extrapolation
Line 704 between intersection point.Therefore, when its internal clocking reaches t1, the first control unit starts operating activity.As above solved
Release, in order to improve the precision in subsequent combustion cycle, first verification data bag is received in the first control unit.First checking number
The checking for the control parameter 720 that the particular moment collection after the operating activity is had been turned in combustion period according to being included in
Value, and the first sensor unit value of the internal clocking 721 in the particular moment, obtain empty in time/parameter
Between in check post vp.Then, the first control unit passes through in the first point p1 and the check post in time/parameter space
The checking for entering row interpolation between vp to estimate the discrete instants when the value of the control parameter reaches the predeterminated target is estimated
Value ve.Using checking estimate ve, it is determined that the checking estimate ve with for start operating activity estimate t1 it
Between difference 715.Then by the first control unit is generated using the difference for controlling the fortune in the subsequent combustion cycle
Turn a work dynamic correction factor.
Fig. 8 shows to include to be used to control each combustion in each cylinder of multi-cylinder engine according to an embodiment of the invention
The schematic diagram of the internal combustion engine of the control system of the execution of the operating activity of movable part during the burning cycle.Internal combustion engine includes four
Cylinder 2, each cylinder 2 has related movable part 8.Control system includes controlling list via communication network 10,11 and first
The first sensor unit 3 that member 4 can be communicatively coupled.Communication network includes wired connection 10 and switch 11.In this embodiment,
One control unit includes single CPU 4.
Fig. 9 shows to include to be used to control each combustion in each cylinder of multi-cylinder engine according to an embodiment of the invention
The schematic diagram of the internal combustion engine of the control system of the execution of the operating activity of movable part during the burning cycle.Internal combustion engine includes four
Cylinder 2, each cylinder 2 has related movable part 8.Control system includes controlling list via communication network 10,11 and first
The first sensor unit 3 that member 4,5 can be communicatively coupled.Communication network includes wired connection 10 and switch 11.In this embodiment,
Four scattered places that first control unit includes single CPU 4 and is positioned at the active member 8 of each cylinder 2
Manage unit 5.
Figure 10 show to include according to an embodiment of the invention be used for control multi-cylinder engine each cylinder it is each
The schematic diagram of the internal combustion engine of the control system of the execution of the operating activity of movable part during combustion period.Shown in Figure 10
Control system is similar to the control system shown in Fig. 9, and difference is the second sensor unit 3` and redundancy for being provided with redundancy
The second control unit 4`.
Although being described in detail and showing some embodiments, the present invention is not only restricted to them, on the contrary can also be with following
Other manner in the range of main body defined in claims is implemented.Particularly, deserved understanding, using other
Embodiment, and modification in structure and functionally can be made without departing from the scope of the invention.
In the system claims for enumerating some modules, in these modules it is some can by one and same hardware branch Lai
Implement.The fact that record in mutually different dependent claims or describe some measures in different embodiments does not indicate that not
Benefit can be obtained using the combination of these measures.
It is emphasized that the term " comprising " used in the description is used for specified stated feature, entirety, step
The presence of rapid or part, but it is not excluded for one or more of the other feature, entirety, step, part or the presence of its group or attached
Plus.
Claims (12)
1. a kind of be used to control activity in response to the control parameter changed over time during each rotation of multi-cylinder engine
The side of the execution of operating activity of the component (8) during each or some combustion periods of each cylinder (2) of multi-cylinder engine
Method, comprises the following steps：
(101) the first discrete instants (208,308) during each combustion period are gathered by first sensor unit (3)
First instantaneous value of control parameter (209,309), wherein the first sensor unit (3) has internal clocking；
(102) the first packet is generated, first packet includes representing the collected of the control parameter (209,309)
The internal clocking of first instantaneous value and the first sensor unit (3) is in first discrete instants (208,308)
The data of value, are obtained first point (p1) in time/parameter space；
First packet is transferred to the first control unit (4,5) via communication network (10,11), wherein first control
Unit (4,5) processed has the internal clocking synchronous with the internal clocking of the first sensor unit (3)；
The first estimate of the time rate of change of the control parameter is obtained in first control unit (4,5)；
Wherein, methods described is further comprising the steps of：
Estimate in first control unit (4,5)：
The control parameter is in the first value for selecting discrete instants (t_proc), wherein the described first selected discrete instants (t_
Proc) be the value according to the internal clocking of the first control unit (4,5) in processing come selection, rather than directly according to described
Reception time of first packet in first control unit (4,5) carrys out selection；Or
The value of the internal clocking of the first control unit (4,5) when the value of the control parameter makes it (204,304)
(t1)；
Wherein, by using the control parameter obtained time rate of change the first estimate directly extrapolation the time/
First point (p1) in parameter space come estimate the control parameter in the value of the described first selected discrete instants (4,5) or
The value (t1) of the internal clocking of first control unit (4,5), and wherein when the value for estimating the control parameter has reached or
Internal clocking more than the predeterminated target (204,304) or the first control unit has met or exceeded estimated value (t1)
When, start operating activity.
2. according to the method described in claim 1, wherein, the instantaneous value of control parameter includes the work with each cylinder (2)
The instantaneous position of the engine crankshaft of plug member connection.
3. method according to claim 1 or 2, wherein, this method is further comprising the steps of：
Second discrete instants of the control parameter during each combustion period are gathered by the first sensor unit (3)
Second instantaneous value (411,511) of (412,512), second discrete instants (412,512) are in first discrete instants
After (208,308)；
The second packet is generated, second packet includes the second instantaneous value of the control parameter that expression is gathered
Value of the internal clocking of (411,511) and the first sensor unit (3) in second discrete instants (412,512)
Data, obtain the second point (p2) in time/parameter space；
Second packet is transferred to first control unit (4,5) via communication network (10,11)；
Wherein, if reached in the value for estimating the control parameter in the predeterminated target or first control unit
Portion's clock handles the second packet after having reached estimated value (t1) for specific combustion period, then without using the second number
Operating activity is controlled in the case of according to the data in bag, and
If having reached the predeterminated target (404,504) or first control unit in the value for estimating the control parameter
Internal clocking reached estimated value (t1) before handle the second packet for the specific combustion period, then use the
Data in two packets control operating activity.
4. according to the method described in claim 1, wherein, methods described is further comprising the steps of：
After the operating activity is started in the combustion period, institute is gathered by the first sensor unit (3)
State the validation value (720) of particular moment (721) of the control parameter during the combustion period；
First verification data bag is generated, the first verification data bag includes the validation value (720) and the first sensor
The internal clocking of unit obtains the check post (vp) in time/parameter space in the value of the particular moment (721)；
The checking packet is transferred to first control unit (4,5) via the communication network (10,11)；
In first control unit, by first point (p1) and/or second point (p2) and in time/parameter space
In check post (vp) between when entering row interpolation to estimate that the value in the control parameter reaches predeterminated target (704) from
Dissipate the checking estimate (ve) at moment；
It is determined that in the checking estimate (ve) and for starting the difference (715) between the estimate of operating activity, wherein institute
The difference of determination is used for generating the correction factor for controlling the operating activity in the subsequent combustion cycle.
5. according to the method described in claim 1, wherein, this method is further comprising the steps of：
Measure described by being positioned in the moving element sensor unit at the moving element (8) place during combustion period
Moving element (8) perform the operating activity when discrete instants, wherein the moving element sensor unit have with it is described
The synchronous internal clocking of the internal clocking of first control unit (4,5)；
Generation includes the second checking packet of measured discrete instants；
The described second checking packet is sent to first control unit (4,5), wherein institute via communication network (10,11)
State the first control unit (4,5) and generated by handling the second checking packet correction for subsequent combustion period because
Number.
6. according to the method described in claim 1, wherein, selected to adopt for each combustion period according to the length of combustion period
The quantity of the value of the control parameter of collection.
7. according to the method described in claim 1, wherein, the second sensor unit (3`) of redundancy additionally gathers the control
The value of parameter and described value is transferred to control unit (4`).
8. a kind of be used to control activity in response to the control parameter changed over time during each rotation of multi-cylinder engine
The system of the execution of operating activity of the component during each or some combustion periods of each cylinder (2) of multi-cylinder engine,
The system includes：
First sensor unit (3) with internal clocking, wherein the first sensor unit (3) is configured as described in collection
First instantaneous value of first discrete instants (208,308) of the control parameter (209,309) during each combustion period, and it is raw
Into the first packet, first packet includes the first instantaneous value and the institute of the control parameter (209,309) gathered
The internal clocking of first sensor unit is stated in the value of first discrete instants (208,308), is obtained in time/parameter
First point (p1) in space；And
With the first control unit for being configured as the internal clocking synchronous with the internal clocking of the first sensor unit (3)
(4,5), wherein first control unit (4,5) is connected to the first sensor unit (3) via communication network (10,11)
And it is configured as obtaining the first estimate of the time rate of change of the discrete parameter, and wherein, the first sensor
Unit (3) is configured as first packet being transferred to first control unit via the communication network (10,11)
(4、5)；
Wherein, first control unit (4,5) is configured to estimate in response to receiving first packet：
The control parameter is in the first value for selecting discrete instants (t_proc), wherein the described first selected discrete instants are bases
In processing, the value of the internal clocking of the first control unit (4,5) carrys out selection, rather than directly according to first packet
The reception time in first control unit (4,5) carrys out selection；Or
The value of the internal clocking of the first control unit (4,5) when the value of the control parameter makes it (204,304)
(t1)；
Wherein directly extrapolated by using the first estimate of the time rate of change of the control parameter obtained in time/ginseng
First point (p1) in number space estimates value of the control parameter in the described first selected discrete instants (t_proc)
Or first control unit (4,5) internal clocking value, and wherein the first control unit (4,5) is configured as the first control
Unit (4,5) estimates that the value of the control parameter has met or exceeded the predeterminated target or the first control unit (4,5)
When internal clocking has met or exceeded estimated value (t1), start operating activity.
9. system according to claim 8, wherein, the instantaneous value of control parameter includes the work with each cylinder (2)
The instantaneous position of the engine crankshaft of plug member connection.
10. system according to claim 8 or claim 9, wherein, first sensor unit (3) is additionally configured to gather the control
Parameter processed during each combustion period after first discrete instants (411,511) the second discrete instants (412,
512) the second instantaneous value (411,511), generation include the second instantaneous value (411,511) of the control parameter gathered and
Second data of the internal clocking of the first sensor unit (3) in the value of second discrete instants (412,512)
Bag, obtains the second point (p2) in time/parameter space, and via communication network (10,11) by second packet
It is transferred to first control unit (4,5)；
Wherein, first control unit (4,5) is configured as
If having reached the predeterminated target (404,504) or first control unit in the value for estimating the control parameter
The internal clocking of (4,5) handles the second packet after having reached estimated value (t1) for specific combustion period, then not
The execution of operating activity is controlled in the case of using the data in the second packet, and
If having reached the predeterminated target (404,504) or first control unit in the value for estimating the control parameter
The internal clocking of (4,5) handles the second packet before having reached the estimate (t1) for the specific combustion period, then
The execution of operating activity is controlled using the data in the second packet.
11. system according to claim 8, wherein, the first sensor unit (3) is additionally configured to described
Start in combustion period after the operating activity, gather particular moment of the control parameter during the combustion period
(721) validation value (720), generation include the validation value (720) and the first sensor unit (3) it is described internal when
Clock obtains the check post (vp) in time/parameter space in the first verification data bag of the value of the particular moment (721),
And the first verification data bag is transferred to first control unit (4,5) via the communication network (10,11)；
Wherein described first control unit (4,5) be configured as by first point (p1) and/or second point (p2) with
Enter row interpolation between check post (vp) in time/parameter space to estimate that the value in the control parameter reaches the predetermined mesh
The checking estimate (ve) of discrete instants during mark (704)；And also determine with being used for start in the checking estimate (ve)
Difference (715) between the estimate of operating activity, wherein identified difference (715) is used for generating in subsequent combustion week
The correction factor of the interim control operating activity.
12. system according to claim 8, wherein, the system, which also includes having, to be configured to and the described first control
The moving element sensor of the synchronous internal clocking of the internal clocking of unit (4,5), the moving element sensor is via described
Communication network (10,11) is connected to first control unit (4,5),
Wherein described moving element sensor is configured as measuring the moving element (8) the execution fortune during combustion period
Discrete instants when turning a work dynamic, generation includes the second checking packet of measured discrete instants, and described second is tested
Card packet is sent to first control unit (4,5),
Wherein described first control unit (4,5) be additionally configured to by handle it is described second checking packet come generate be used for
The correction factor of the operating activity is controlled afterwards.
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| DK201370728A DK177921B1 (en) | 2013-11-28 | 2013-11-28 | Control of operational events for an internal combustion engine |
| DKPA201370728 | 2013-11-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2602031B2 (en) * | 1987-10-14 | 1997-04-23 | マツダ株式会社 | Electronic control unit for internal combustion engine |
| JP2006285977A (en) * | 2005-03-09 | 2006-10-19 | Denso Corp | Information processing system |
| KR100882926B1 (en) * | 2007-03-12 | 2009-02-10 | 맨 디젤 필리얼 아프 맨 디젤 에스이, 티스크랜드 | Control method and system for a multi-cylinder internal combustion engine |
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| DE102004029065A1 (en) * | 2004-06-16 | 2006-01-26 | Siemens Ag | Crankshaft synchronous acquisition of analog signals |
| DK177130B1 (en) * | 2011-04-14 | 2012-01-09 | Man Diesel & Turbo Deutschland | Method of controlling an internal combustion engine |
| DK177921B1 (en) * | 2013-11-28 | 2015-01-05 | Man Diesel & Turbo Deutschland | Control of operational events for an internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2602031B2 (en) * | 1987-10-14 | 1997-04-23 | マツダ株式会社 | Electronic control unit for internal combustion engine |
| JP2006285977A (en) * | 2005-03-09 | 2006-10-19 | Denso Corp | Information processing system |
| KR100882926B1 (en) * | 2007-03-12 | 2009-02-10 | 맨 디젤 필리얼 아프 맨 디젤 에스이, 티스크랜드 | Control method and system for a multi-cylinder internal combustion engine |
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| KR20150062134A (en) | 2015-06-05 |
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| DK177921B1 (en) | 2015-01-05 |
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