CN108153974A - A kind of submarine navigation device path fault positions resistance calculations method - Google Patents
A kind of submarine navigation device path fault positions resistance calculations method Download PDFInfo
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- CN108153974A CN108153974A CN201711419197.2A CN201711419197A CN108153974A CN 108153974 A CN108153974 A CN 108153974A CN 201711419197 A CN201711419197 A CN 201711419197A CN 108153974 A CN108153974 A CN 108153974A
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- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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Abstract
The present invention provides a kind of submarine navigation device path faults to position resistance calculations method, it is related to submarine navigation device field, the present invention is made up of analysis system, design system path fault positions resistance topology, according to system resistance topology, it obtains practical computation model, calculates equivalent resistance under all possible states;By comparing the different components under the combination of same resistance and the equivalent resistance of safety plug installation assembled state, the minimum value of the resistance difference between arbitrary two states equivalent resistance is calculated, you can obtain corresponding resistance value.Energy rapid development of the invention goes out disclosure satisfy that the via resistance resistance value of use demand, in use, product connected trouble position can be accurately positioned, investigate positioning for submarine navigation device abnormality and authentic experiments provide technical support, the present invention uses in the relevant technologies model at present.
Description
Technical field
The present invention relates to submarine navigation device field, especially a kind of fault location computational methods.
Background technology
Under water in the assembling of aircraft, debugging process, it often will appear product path fault, and the problem is small, causes
Repeatedly blindly dismounting, waste the precious time for submarine navigation device, then leads to greatly the failure of test mission.For the situation,
In the design process of many types of submarine navigation device, there is the design of simple path fault location, but certain model does not take access event
The method of barrier positioning resistance, exists and only confirms in entire product whether there is exception, failure specific location can not be accurately positioned
The problem of;Certain model positions resistive arrangement using path fault, but does not propose complete resistance calculations method, mostly using trial
The method of collocation wastes valuable design time, and subsequent project is designed without reference significance.
Invention content
For overcome the deficiencies in the prior art, the present invention is set for certain using the submarine navigation device of path fault positioning resistance
Detailed path fault positioning resistance calculations method is counted, the present invention is suitable for all using the underwater of path fault positioning resistance
Aircraft designs.
The technical solution adopted by the present invention to solve the technical problems is as follows:
Step 1:Analysis system forms, design system path fault positioning resistance topology;
When carrying out resistance topology design, it is assumed that submarine navigation device system is made of n bay section and n safety plug,
Bay section 2 is to bay section n with previous bay section junction arrangement parallel resistance R1~Rn-1, in each bay section, in safety plug to inserting
End arrangement series resistance, i.e. system pass fault resstance topology is the connection in series-parallel of multiple resistance, obtains path fault resistance topology
Figure, wherein r1~rnTo correspond to the equivalent resistance of safety plug group, if having multiple safety plugs, r in a bay sectionnIt can be further divided into
rn1、rn2、…rnm, wherein m refers to the quantity of installation plug in this bay section, if this bay section is without safety plug, equivalent resistance 0;
Step 2:According to system resistance topology, obtain practical computation model, calculate equivalent resistance under all possible states;
In each bay section, each mounting assembly c1~cnIt is installed in a series arrangement in resistance topology model, equivalent resistance is
0 or ∞, i.e., when component installation condition is normal, equivalent resistance 0, if component installation condition is abnormal, equivalent resistance ∞;Respectively
Safety plug d1~dnBe installed in resistance topology model with parallel way, i.e., in each bay section, the equivalent resistance of safety plug with
To in spigot safety socket path fault position resistor coupled in parallel, and the resistance value of equivalent resistance be 0 or ∞, i.e., safety plug etc.
When effect resistance is normal, equivalent resistance 0, if the equivalent resistance of safety plug is abnormal, equivalent resistance ∞, so as to obtain system
It is as follows to test equivalent resistance formula:
R=(((((cn+rn//dn)//Rn-1+cn-1+rn-1//dn-1)//Rn-2+cn-2+rn-2//dn-2)//Rn-2+…c3+r3//
d3)//R2+c2+r2//d2)//R1+c1+r1//d1 (1)
In formula (1), R be final equivalent resistance, R1~Rn-1And r1~rnRepresent system pass fault location resistance, c1~cn
Represent bay section inner assembly installation condition equivalent resistance, value is 0 or ∞;d1~dnRepresent the equivalent electricity of safety plug installation condition
Resistance, value are 0 or ∞;" ∥ " represents resistor coupled in parallel;
Step 3:It first determines path fault positioning resistance packing forms, resistance grade array is formulated by measuring resistance gear;Again
Resistance grade array is substituted into formula (1) successively to calculate, different components and safety plug peace under more same resistance combination
The equivalent resistance of assembled state is filled, the minimum value of the resistance difference between arbitrary two states equivalent resistance is calculated, it will most
Small value is denoted as Cmin, then calculate the minimal difference C between the different lower two states equivalent resistances of resistance combinationmin, wherein different electricity
The lower minimal difference C of resistance combinationminCorresponding resistance combination, the resistance value as finally obtained when maximum.
In the step 2, if comprising m safety plug in bay section n, by rnIt is subdivided into rn1、rn2…rnm, and by formula (1)
Middle rnIt is changed to rn1+rn2+…+rnmIt is calculated.
The beneficial effects of the present invention are the via resistance resistance values that energy rapid development goes out disclosure satisfy that use demand, are using
In the process, product connected trouble position can be accurately positioned, carried for the positioning of submarine navigation device abnormality investigation and authentic experiments
Technical support is supplied, the present invention uses in the relevant technologies model at present.
Description of the drawings
Fig. 1 is the structure composition figure of general-purpose system.
Fig. 2 positions resistance schematic diagram for general-purpose system path fault.
Fig. 3 is the equivalent resistance test schematic diagram of general-purpose system.
Fig. 4 is the structure composition figure of this submarine navigation device.
Fig. 5 is that the path fault of this submarine navigation device positions resistance schematic diagram.
Fig. 6 is the equivalent resistance test schematic diagram of this submarine navigation device.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
The present invention combines certain and has carried out path fault positioning resistance calculations grinding submarine navigation device, and Fig. 1 is general-purpose system
Structure composition figure.Fig. 2 positions resistance schematic diagram for general-purpose system path fault.Fig. 3 is that the equivalent resistance test of general-purpose system is shown
It is intended to.
Embodiment is as follows:
Step 1:As shown in figure 4, sharing 2 safety plugs, safety plug 1 and 2 is working the structure composition of the present embodiment
When be installation condition, be non-installation condition during test, according to structure shown in Fig. 4, connected trouble positioning resistance topology is shown in Fig. 5,
Wherein R1~R5Resistance is in bay section end connector, r1And r2(safety plug is to spigot), each group in bay section safety socket
The connectivity resistance of part is series connection in each bay section, and the external connectivity resistance test point of model is at E, F point, according to test
Property requirement, R1~R5Resistance is different.
Step 2:Model equivalent resistance is calculated according to model resistance topology, resistance topology is positioned with reference to connected trouble in Fig. 5,
Analog equipment inner assembly installation condition obtains model test topology as shown in fig. 6, the equivalent resistance R that E, F end is calculated is calculated
Formula is as follows:
R=((((R5∥c6+r2∥d2+c5)∥R4+r1∥d1+c4)∥R3+c3)∥R2+c2)∥R1+c1
In formula:R1~R5And r1~r2Path fault for model positions resistance;c1~c6The bay section 1 of this model is represented respectively
6 product installation condition equivalent resistance of~bay section, value are 0 or ∞;d1~d2This model safety plug 1 and safety are represented respectively
2 installation condition equivalent resistance of plug, value are 0 or ∞;" ∥ " represents resistor coupled in parallel.
When carrying out whole connected states confirmations, respective resistance values c is substituted into1~c6, d1~d2(0 or ∞) it is whole to calculate model
State equation such as 1 content of table:
The whole condition communication resistance of table 1 correspond to table
In above formula, any state can be by abnormal positioning to bay section, when the difference between two state of any of which is big
In the sum of allowable error of two states, you can distinguish different conditions, positioned so as to fulfill state, connected so as to fulfill to bay section component
Connectivity state is positioned.
Step 3:Via resistance computing the resistor value is completed using MATLAB, it is as follows to calculate step:
Step 3.1:Formulate path fault positioning resistance gear.
Resistance is fixed on inside cable by the present embodiment when carrying out path fault positioning resistive arrangement.Using direct insertion
Resistance, according to E24 resistance standards, the preliminary fault location resistance for determining the present invention is selected from following resistance grade, if
The result gone out cannot meet test request, then resistance gear is extended.
R=[1000;10000;11000;13000;1400;14000;1500;15000;1600;1800;2000;2300;
2500;3300;3900;4200;4400;4700;5100;5600;6200;7300;7500;930;8200;9400].
Resistance is resistance value in the E24 standards of direct insertion resistance herein, due to considering to calculate the time, initially employs part often
Whole resistance gears are not completely covered for K grades of resistance values, if after can not still meeting the requirements, then resistance grade array is extended,
More than unit of resistance is Ω.
Step 3.2:The minimum value of the resistance difference between arbitrary two states equivalent resistance is calculated, minimum value is remembered
For Cmin, then calculate the minimal difference C between the different lower two states equivalent resistances of resistance combinationmin, wherein different resistance combinations
Lower minimal difference CminCorresponding resistance combination, the resistance value as finally obtained when maximum.
The present embodiment sets variable R1~R5、r1、r2, bring the numerical value of R arrays into variable R successively1~R5、r1、r2In,
Middle R1~R5It should differ, according to formula in table 1, calculate minimal difference between the same group of lower different conditions of resistance combination most
Big value.
Obtain minimal difference CminResistance combination when maximum, path fault as of the invention positioning resistance.
By as above step, the C between arbitrary two state of the present embodiment is calculatedmaxIt is corresponding logical for 175.1317 Ω
Road fault location resistance is:R1=14000 Ω, R2=15000 Ω, R3=13000 Ω, R4=11000 Ω, R5=1400 Ω, r1
=r2=2300 Ω.
By more than resistance combination be calculated, as two state resistances minimum 175.1317 Ω of difference, two states it is equivalent
Resistance is about 3k Ω, and when path fault positioning resistance uses 5 ‰ grades, the worst error between two states is about 30 Ω (3k Ω
× 5 ‰ × 2) it is, smaller compared with 175.1317 Ω of theoretical difference of calculating, it disclosure satisfy that system requirement, do not carry out resistance
Gear is extended and is computed repeatedly.
Claims (2)
1. a kind of submarine navigation device path fault positions resistance calculations method, it is characterised in that includes the following steps:
Step 1:Analysis system forms, design system path fault positioning resistance topology;
When carrying out resistance topology design, it is assumed that submarine navigation device system is made of n bay section and n safety plug, in bay section 2
To bay section n with previous bay section junction arrangement parallel resistance R1~Rn-1, in each bay section, in safety plug to spigot cloth
Put series resistance, i.e. system pass fault resstance topology is the connection in series-parallel of multiple resistance, obtains path fault resistance topology figure,
Middle r1~rnTo correspond to the equivalent resistance of safety plug group, if having multiple safety plugs, r in a bay sectionnR can be further divided inton1、
rn2、…rnm, wherein m refers to the quantity of installation plug in this bay section, if this bay section is without safety plug, equivalent resistance 0;
Step 2:According to system resistance topology, obtain practical computation model, calculate equivalent resistance under all possible states;
In each bay section, each mounting assembly c1~cnBe installed in a series arrangement in resistance topology model, equivalent resistance for 0 or
Person ∞, i.e., when component installation condition is normal, equivalent resistance 0, if component installation condition is abnormal, equivalent resistance ∞;Each peace
Full plug d1~dnBe installed in resistance topology model with parallel way, i.e., in each bay section, the equivalent resistance of safety plug with it is right
Path fault positions resistor coupled in parallel in spigot safety socket, and the resistance value of equivalent resistance is 0 or ∞, i.e., safety plug is equivalent
When resistance is normal, equivalent resistance 0, if the equivalent resistance of safety plug is abnormal, equivalent resistance ∞, so as to show that system is surveyed
It is as follows to try equivalent resistance formula:
R=(((((cn+rn//dn)//Rn-1+cn-1+rn-1//dn-1)//Rn-2+cn-2+rn-2//dn-2)//Rn-2+…c3+r3//
d3)//R2+c2+r2//d2)//R1+c1+r1//d1 (1)
In formula (1), R be final equivalent resistance, R1~Rn-1And r1~rnRepresent system pass fault location resistance, c1~cnIt represents
Bay section inner assembly installation condition equivalent resistance, value are 0 or ∞;d1~dnRepresent safety plug installation condition equivalent resistance,
It is worth for 0 or ∞;" ∥ " represents resistor coupled in parallel;
Step 3:It first determines path fault positioning resistance packing forms, resistance grade array is formulated by measuring resistance gear;It again will be electric
Resistance gear number group substitutes into formula (1) and is calculated successively, different components and safety plug installation group under more same resistance combination
The minimum value of the resistance difference between arbitrary two states equivalent resistance is calculated, by minimum value in the equivalent resistance of conjunction state
It is denoted as Cmin, then calculate the minimal difference C between the different lower two states equivalent resistances of resistance combinationmin, wherein different resistance groups
Close lower minimal difference CminCorresponding resistance combination, the resistance value as finally obtained when maximum.
2. a kind of submarine navigation device path fault positioning resistance calculations method according to claim 1, it is characterised in that:
In the step 2, if comprising m safety plug in bay section n, by rnIt is subdivided into rn1、rn2…rnm, and by r in formula (1)n
It is changed to rn1+rn2+…+rnmIt is calculated.
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