SU1298781A2 - Analyzer of separating qualities of vessel - Google Patents

Abstract

This invention relates to analog measurement technology. The purpose of the invention is to improve the accuracy of modeling the seaworthiness of the vessel. The analyzer allows you to determine the integral assessment of the ship’s abutment qualities as a weighted integral sum of the parameters of pitching, loss of travel speed and deviations of the executive bodies (AI), for example, the rudders, when the vessel is moving in rough seas. To do this, a device containing a variable component of the deviations of 1U, the gain factor of which has an effective dependence, is introduced into the device, which contains three identical channels for modeling variable and constant trim deviations, roll and loss of travel speed, as well as an adder, indicator and task block - averaging duration. on the magnitude of the speed. At the same time, an increase in the accuracy of modeling the seaworthiness of the vessel is achieved due to taking into account the influence on the seaworthiness of the vessel by setting the ftl movement control system on it, the unequal efficiency of the EUT in various vessels, and the energy cost of managing the EUT. 2 Il. (L to with 00 oo

Description

The invention relates to analog measurement technology, is intended to determine (analyze) the seaworthiness of vessels of various classes and is an improvement of the known device according to the author. Ev, No. 1120372.

The purpose of the invention is to improve the accuracy of modeling the seaworthiness of the vessel.

Figure 1 and 2 presents the structural scheme of the analyzer seaworthy, vessel.

The analyzer contains a trim mode channel 1, a roll modeling channel 2 and a vessel speed modeling channel 3, each of which includes a sensor 4 of a random signal, a constant signal setter 5,

13. At the output of the adder 8, a signal of the form (t, -) is received, which is fed to the input of the block 9

l, where a signal of the form 5 is formed (yf - m y |. From the output of block 9 the module is calculated, the signal goes to the input of the scaling amplifier 10, where the signal is scaled to

fm

ten

dh

where k is the coefficient with

f5

variable and constant deviation of the random parameter. the normal distribution law of the tea quantity k 3. From the output of the 1O-output signal, the signal arrives at the input of the adder 11. From the output of the averaging signal, m .p is fed to the input of the module 14 of the module calculation, where form the signal is a view ((, which is input to the adder 11 . At the exit

a subtraction unit 6, an averager 7, a transmitter 11, a signal is obtained

kU

} +

Adder 8, second module calculation module 9, second scaling amplifier 10, second adder 11, first scaling amplifier 12, inverter 13, first module calculating module 14, and also adder 15, averaging device 16, display unit 17, duration setting unit 18 averaging, a rudder position sensor 19, an additional averager 20, an inverter 21, an additional adder 22 in a module calculation unit 23, a multiplication unit 24, a scaling amplifier 25, a quadrant 26. A sensor set 19, an averager 20, an inverter 21, an additional adder 22, block 23 the calculation of the module, the multiplication unit 24, the scaling amplifier 25, the quadrant 26 constitutes the kangsh 27 of the variable component of the deviations of the actuators.

Consider the operation of the analyzer on the example of channel 1 trim modeling. The signals from the outputs of the sensor 4 and the setting device 5 are fed to the inputs of the subtraction unit 6. The trim mismatch signal & iV from the output of block 6

enters the input of the inverter 21, g it is inverted and then the input of the adder 22 is fed, to the other input of the second a signal is output from the output d

arrives at the input of the average 7, where ..,

ff, chika 19 rudder position. The output is a calculation of the estimate of the material.

adder 22, we get a signal of the form (S- mg) S J, i.e. in the criterion assessment, only the change component of the rudder deviation is taken into account, as it means the moderation of the vessel.

mathematical expectation by the ratio

1m

iV

 - (-,) dt, and at the entrance

inverter 13, where it is produced} inverted. From the output of the average

7 sigal m

lf

served at the first entrance

adder 8, the second input of which is fed from the output of the inverter

a1298781 2

13. At the output of the adder 8, a signal of the form (t, -) is obtained, which is fed to the input of block 9 of the module calculation, where the signal of the form is formed (yf - m y |.) From the output of block 9 of the module's calculation, the signal goes to the input of the scaling amplifier 10, where the signal is scaled to

fm

dh

where k is the coupling coefficient

the variable and constant components of the deviations of the random parameter. For the normal distribution of the random variable k 3. From the output of the amplifier 1, the signal is fed to the input of the adder 11. From the output of the averager 7, the signal m .p is fed to the input of the module 14, the module calculation, where the signal of the form is formed ((, that is fed to the input adder 11. At the output of the sum of mator 11, a signal of the form is obtained

0

five

kU

m

uUl

} +

m

CH1

which is served

its input is scaled; its amplifier 12, where the signal is scaled to

syik / dch - m

yu

tp

yu

ABOUT,

where is the weight trim ratio.

Similar expressions for roll C and speed V are obtained at the outputs of scaling amplifiers 12 in channels 2 and 3 of the roll and speed simulations.

From the outputs of the amplifiers 12, the signals arrive at the corresponding inputs of the adder 15.

The operation of the additional part of the analyzer is as follows.

The signal from the output of the sensor 19 position of the rudder enters the input of the average 20, which is used to calculate the estimate of the mathematical expectation of the rudder mg by the ratio

five

0

 l | (S-mJdt.

5 x j

From the output of the averager 20, the signal mg is fed to the input of the inverter 21, where it is inverted and then fed to the input of the adder 22, to another input of which a signal is output from the date output ..,

Chika 19 position rud. At the exit

adder 22, we get a signal of the form (S- mg) S J, i.e. in the criterial assessment, only the variable component of the rudder deviation is taken into account, since it is precisely this that determines the moderation of the vessel’s motion.

From the output of the adder 22, the signal is fed to the input of the calculation unit 23 of the MODEL. FL, where a signal of the form 181 is formed.

iia is supplied with the first input of the multiplication unit 24, to the second input of which the signal corresponding to the square of the vessel's travel speed k V is sent from sensor 4 via quad 26, where k is the normalizing factor (k 0,1). In this case, a signal of the form is formed at the output of block 24 multiplied. From the output of multiplier 24, the signal IS / is fed to the input of the mas-fO stacking amplifier 25, where it is scaled to the value

and

one

where kj - and g, with Dg b

permissible dispersion of movement of the executive body (steering wheel, flap). Member | S | It takes into account in the analyzer the influence of the presence of a ship's control system and the efficiency of executive bodies, as well as the energy costs of the executive bodies aimed at improving the navigational qualities of the vessel, moreover, since the resistance force on the executive body increases in quadratic dependence on the speed of travel, this member contains the factor V. The member kgk V is the weighting factor for the executive in the analyzer

(kgk.V2). The signal is fed to the auxiliary input of the adder 15 for summation. From the output of the adder 15, the signal is fed to the input of the averager 16, where a signal of the form

I fJ {k, (V ,, kU4 - | t, c, 1 + | in ef + rJkl & V-m, l

 0 - A; L + imuvn +

where k

) - I dt,

averaging coefficient j

T is the time constant of the averager (ЗТ);

t is the time the ship passes the tack on the sea, taking into account the fact that in one tack the ship makes at least 100 oscillations on the trim. Based on the value of the value I, the nautical qualities of the vessel are estimated. I is a criterion assessment of seaworthiness. Less value

I under the same conditions

neither, the better the seaworthiness of the vessel.

The weighting factors are determined by

V v v

IV - 0 ratio

, -fO,

20

15

25 d

thirty

40

oh

45

50

1 --- where

Lhd

X N

V, and lx 1t,

55

+ klx - is the maximum permissible deviation of a random parameter.

The signal I from the output of the averager 16 is fed to the input of the display unit 17 for registration.

The signal from the output of block 18 sets the averaging duration when installing block 18 from the initial state (the capacitors of averagers 7, 16, 20, made on the basis of the first-order aperiodic link, are bridged by small resistance, the voltage on them is almost zero and the averaging process does not occur — these elements are not shown) into the working shunt resistances are turned off, and the process of averaging random parameters begins, the analyzer is put into a working state by calculating the value of I.

Claims (1)

Invention Formula Analyzer of seaworthiness of the vessel by author. St. No. 1120372, characterized in that, in order to improve the accuracy of modeling the nautical qualities of the vessel, the serially connected coil position sensor, additional averager, inverter and additional adder, as well as the module calculating unit, quad, multiplier and scaling amplifier, whose output connected to the auxiliary input of the adder, the output of the rudder position sensor is connected to the second input of the auxiliary adder, the output of which is connected to the first input of the block through the module’s calculation unit multiplication, the output of which is connected to the input of the scaling amplifier, the output of the sensor of the random signal of the ship speed simulation channel is connected via a quadr to the second input of the multiplication unit, the output of the duration setting block is averaged and connected to the control input of the additional averager. Editor V.Danko Compiled by I. Dubinin Tehred And, Popovich Proofreader L. Pilipenko Order 892/53 Circulation 673 Subscription VNIIPI USSR State Committee for inventions and discoveries t.t3035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, st. Project, 4