SU1710439A1 - Fin propulsion plant - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to shipbuilding, in particular to liners of propulsion systems. is to improve the performance of a fin propulsion system by optimizing the fin oscillation law. The installation consists of a fin 1 *. a rotary-oscillating drive, which includes a hinge-lever parallelogram mechanism 2, executive motors — hydraulic cylinders 3 and 4, electrohydraulic amplifiers 6 and 7. feedback, blocks, set the laws of oscillations, 1. f-ly, 2

Description

(L

with

with

H)

The invention relates to shipbuilding, in particular to fin propulsion installations.

The aim of the invention is to improve the performance of a fin propulsion plant.

Figure 1 shows the functional diagram of the proposed installation; Fig. 2 is a diagram of the execution of the delay units and the setting of the law of oscillations.

The installation consists of a fin 1, an oscillating-rotary drive, which includes a hinge-parallelogram mechanism 2, executive motors — swinging cylinders 3 and 4, a power station 5, electrohydraulic amplifiers b and 7.

The drive control system consists of a master (clock) generator 8 connected to the drive through two control circuits. One of the circuits, which has the oscillation law setting unit 9, whose input is connected to the output of the generator 8. And the output through the power amplifier 10 (for example, a pulse-width modulator) is connected to the input of the electro-hydraulic amplifier b, is a control circuit of the hydraulic lever 3 swing arm 11. In the other control circuit of the hydraulic cylinder 4 of the swing of the fin 1 there is a delay line in the form of a delay unit 12 and a law setting unit 13, the inputs of which are connected to the outputs of blocks 8.9 and 12, and the output through the power amplifier 14 is connected to an electric the hydraulic amplifier 7. The control system contains circuits consisting of position sensors 15 and 16, mounted hydraulic cylinders 3 and 4, and feedback amplifiers 17 and 18, connected to power amplifiers 10 and 14. 8, the control system also includes midrange regulators 19 and 20, electrically connected to amplifiers 10 and 14. Fin 1 is rigidly attached to link 21 of parallelogram mechanism 2,

The unit for setting the law of oscillations consists of serially connected 8-bit binary counters 22, permanent storage devices (ROM), 23 m digital-to-analog converters (D / A converters) 24, to which are connected potentiometers 25-regulators of oscillation amplitude. Block 12 contains an analog-to-digital converter 26 connected to the register of storing delay values 27 and to a potentiometer 28 —the control of the delay.

The clock pulses of the generator 8, proportional to the frequency of oscillations of the fin, go to blocks 9 and 13, where control signals are generated, and with an adjustable time shift between them using a delay block 12, to the inputs of pulse-width modulators 10 and 14, which generate signals management

amplifiers 6 and 7, depending on signals from position sensors and controllers 19 and 20. Under the influence of these signals, amplifiers 6 and 7 regulate the flow of oil produced by the oil power station and distribute it

0 alternately into both cavities of the hydraulic cylinders 3 and 4. As a result, the hydraulic cylinders' rods reciprocate, moving the fin by a certain parallelogram mechanism 2 in the space. The oscillation frequency depends on the frequency of the pulses of the clock generator, and the amplitudes are determined by the magnitude of the reference voltages of the DAC. adjustable potentiometers 25.

The value of the control signal is set using the blocks 9 and 13 (manual adjustment). The knobs 19 and 20 allow you to change the average position of the lateral and angular oscillations of the fin, which leads to a change in the thrust direction of the propeller. The signal to the control circuit of the hydraulic cylinder of the fin swing arrives with a time delay determined by the parameters of the delay block 12, which is necessary to form an optimal fin swing law. Unit 12 has an adjustment unit that allows adjustment of the delay from 0 to 360 ° (in phase). For correcting the waveform

The 5 hydraulic cylinders and the maintenance of the middle positions established by means of the regulators 19 and 20 introduce negative feedbacks into the control channels. Phase shift between side and corner

0 oscillations of the fin determines the magnitude of the string and its direction.

Claims (1)

Claim 1. Finned propulsion unit, made with a rotary-rotary rotary motion drive, containing swivel arm swing motor and hinge-connected fin, and a control system containing two drive control circuits with feedback in each of the circuits and the line delays in one of them, the unit setting the law of oscillations, power amplifiers, characterized in that, in order to improve performance, the control system is equipped with two controllers of the middle position In addition, an additional unit for setting the law of oscillations, each of the said units specifying the law of oscillation and a torsion middle position, is electrically connected to the corresponding control circuit, and the executive motors are designed as swinging hydraulic cylinders. A power installation as claimed in claim 1, wherein each unit for setting the law of oscillations is made of successively connected eight-digit counter a. a persistent storage device and a digital-to-analog converter, and a delay line in the form of a serially connected delay controller, an analog-to-digital converter, and a register of storing delay values. (Reg. 2