Installation and debugging method for ship selsyn steering angle indication

Abstract

The invention provides an installation and debugging method for indicating the steering angle of a ship selsyn, which comprises the following steps: stator windings of a transmitter installed in a steering engine room and a receiver installed in a cab are connected to an alternating current power supply, and rotor windings are in cross connection; a parallelogram transmission mechanism composed of a steering engine steering wheel, a first connecting rod and a second connecting rod is constructed; adjusting the length of a first connecting rod to be equal to the distance from the center of the steering engine to a steering wheel mounting point, and adjusting the length of a second connecting rod to be equal to the distance from the center of the steering engine to a transmitter; synchronously returning the steering engine, the transmitter and each receiver to zero; respectively rotating the steering engine to a left full rudder and a right full rudder, and measuring the error value of each dial gauge; adjusting the length of the connecting rod according to the error value, shortening the second connecting rod when the whole deviates leftwards, prolonging the second connecting rod when the whole deviates rightwards, prolonging the first connecting rod when the amplitude is insufficient, and shortening the second connecting rod when the amplitude exceeds the limit. According to the technical scheme, the technical problems of geometric error accumulation, fault coupling effect and dynamic compensation deficiency in the prior art can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of shipbuilding, and particularly relates to an installation and commissioning method for the self - synchronizing machine rudder angle indication of a ship. Background Art

[0002] At present, for the rudder angle indication system on a ship, a self - synchronizing machine is used to achieve the function of rudder angle indication. Due to reasons in the installation process, various errors will occur during the installation and commissioning of the self - synchronizing machine. The characteristic of the self - synchronizing machine is that a fault at a local point will affect all other components and thus affect their working states, making it difficult to find the cause of the problem. Therefore, attention should be paid to the methods and ways during installation and commissioning.

[0003] Therefore, how to provide an installation and commissioning method for the self - synchronizing machine rudder angle indication of a ship, which can solve the technical problems of geometric error accumulation, fault coupling effect and dynamic compensation deficiency existing in the prior art, has become an urgent technical problem to be solved. Summary of the Invention

[0004] An embodiment of the present invention provides an installation and commissioning method for the self - synchronizing machine rudder angle indication of a ship, which can solve the technical problems of geometric error accumulation, fault coupling effect and dynamic compensation deficiency existing in the prior art.

[0005] In an embodiment of the present invention, an installation and commissioning method for the self - synchronizing machine rudder angle indication of a ship is provided, including:

[0006] S101. Install two sets of self - synchronizing machine systems, including a transmitter installed in the rudder engine room and a receiver installed in the cab. The stator winding is connected to an AC power supply, and the rotor windings are cross - connected;

[0007] S102. Construct a parallelogram transmission mechanism composed of a rudder machine rudder wheel, a first connecting rod and a second connecting rod, where the first connecting rod connects the rudder wheel and the transmitter, and the second connecting rod connects the transmitter and the receiver;

[0008] S103. Adjust the length L1 of the first connecting rod to be equal to the distance D1 from the rudder machine center to the rudder wheel installation point, and adjust the length L2 of the second connecting rod to be equal to the distance D2 from the rudder machine center to the transmitter;

[0009] S104. Perform zero - position calibration to synchronously zero the rudder machine, the transmitter and each receiver;

[0010] S105. Perform amplitude calibration. Turn the rudder machine to full left rudder and full right rudder respectively, and measure the error values of each indicating meter;

[0011] S106. Adjust the connecting rod length according to the error values. When it is overall left - biased, shorten the second connecting rod; when it is overall right - biased, extend the second connecting rod; when the amplitude is insufficient, extend the first connecting rod; when the amplitude exceeds the limit, shorten the second connecting rod.

[0012] Further, perform zero calibration to synchronously zero the servo, transmitter, and each receiver, including:

[0013] Fix the middle position of the servo through a mechanical limit device;

[0014] Manually adjust the transmitter rotor to the zero position mark after power-off;

[0015] Use an oscilloscope to detect the phase consistency of the output voltages of each receiver.

[0016] Further, perform amplitude calibration by turning the servo to the left full rudder and right full rudder respectively, and measure the error values of each indicating meter, including:

[0017] The test angle for turning to the left full rudder is -35° ± 0.5°, and the test angle for turning to the right full rudder is +35° ± 0.5°;

[0018] Record the linear error curve of the indicating value of each receiver and the actual rotation angle of the servo.

[0019] Further, adjust the length of the connecting rod according to the error value. When it is overall left-biased, shorten the second connecting rod; when it is overall right-biased, extend the second connecting rod; when the amplitude is insufficient, extend the first connecting rod; when the amplitude exceeds the limit, shorten the second connecting rod, including:

[0020] When the left full rudder error ΔL and the right full rudder error ΔR satisfy |ΔL - ΔR| > 1°, give priority to adjusting the length of the first connecting rod;

[0021] When ΔL and ΔR are in the same direction and the difference is < 0.5°, adjust the length of the second connecting rod.

[0022] Further, the method further includes: error compensation, that is

[0023] After completing the mechanical adjustment, connect an adjustable resistor network to the receiver circuit, and eliminate the residual error through electronic compensation to make the overall accuracy of the system reach within ±0.2°.

[0024] Further, the electronic compensation includes:

[0025] Connect an adjustable voltage-dividing resistor in parallel at the receiver signal output end;

[0026] Set multiple compensation nodes according to the measured error curve;

[0027] Perform temperature drift compensation using metal film resistors with matching temperature coefficients.

[0028] Further, adjust the length of the first connecting rod L1 to be equal to the distance D1 from the servo center to the rudder disc installation point, and adjust the length of the second connecting rod L2 to be equal to the distance D2 from the servo center to the transmitter, including:

[0029] The length adjustment accuracy of the first link length L1, the second link length L2, the distance D1, and the distance D2 is controlled within the range of ±0.5 mm, and the ratio error of L1 / D1 and L2 / D2 does not exceed ±0.1%.

[0030] Further, the method further includes an installation verification step, that is:

[0031] After the debugging is completed, a full-stroke angle verification test is performed at intervals of 5°;

[0032] Establish a corresponding relationship database between the debugging parameters and the ship draft state;

[0033] Generate a traceable electronic file containing the debugging time, the operator, and the test data.

[0034] The beneficial effects brought by the present invention are as follows:

[0035] As can be seen from the above solution, the embodiment of the present invention provides an installation and debugging method for ship synchro rudder angle indication. By installing two sets of synchro systems, including a transmitter installed in the steering gear compartment and a receiver in the cab, the stator winding is connected to an AC power supply, and the rotor windings are cross-connected; a parallelogram transmission mechanism composed of a steering gear wheel, a first link, and a second link is constructed, where the first link connects the steering wheel to the transmitter, and the second link connects the transmitter to the receiver; adjust the first link length L1 to be equal to the distance D1 from the center of the steering gear to the installation point of the steering wheel, and adjust the second link length L2 to be equal to the distance D2 from the center of the steering gear to the transmitter; perform zero calibration to synchronize the steering gear, the transmitter, and each receiver to zero; perform amplitude calibration, turn the steering gear to full left rudder and full right rudder respectively, and measure the error values of each indicating meter; adjust the link length according to the error value, shorten the second link when the whole is left-biased, extend the second link when the whole is right-biased, extend the first link when the amplitude is insufficient, and shorten the second link when the amplitude exceeds the limit. The technical solution of the present invention can solve the technical problems of geometric error accumulation, fault coupling effect, and dynamic compensation lack existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a flowchart of an installation and debugging method for ship synchro rudder angle indication according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] As Figure 1 shown, Figure 1 This is a flowchart of an installation and commissioning method for ship selsyn rudder angle indication according to an embodiment of the present invention.

[0039] Figure 1 In an installation and commissioning method for ship selsyn rudder angle indication, it includes:

[0040] S101. Install two sets of selsyn systems, including a transmitter installed in the steering gear compartment and a receiver installed in the cab, connect the stator windings to an AC power supply, and cross-connect the rotor windings;

[0041] S102. Construct a parallelogram transmission mechanism composed of a steering gear steering wheel, a first connecting rod, and a second connecting rod, where the first connecting rod connects the steering wheel to the transmitter, and the second connecting rod connects the transmitter to the receiver;

[0042] S103. Adjust the length L1 of the first connecting rod to be equal to the distance D1 from the steering gear center to the steering wheel installation point, and adjust the length L2 of the second connecting rod to be equal to the distance D2 from the steering gear center to the transmitter;

[0043] S104. Perform zero calibration to synchronously zero the steering gear, transmitter, and each receiver;

[0044] S105. Perform amplitude calibration, turn the steering gear to full left rudder and full right rudder respectively, and measure the error values of each indicating meter;

[0045] S106. Adjust the connecting rod length according to the error value. When it is overall left-biased, shorten the second connecting rod; when it is overall right-biased, extend the second connecting rod; when the amplitude is insufficient, extend the first connecting rod; when the amplitude exceeds the limit, shorten the second connecting rod.

[0046] In the embodiments of the present invention, aiming at the working principle of the selsyn, we carry out the installation and commissioning work in a targeted manner, thereby reducing the commissioning time and improving the equipment accuracy. The traditional installation method does not establish an accurate geometric relationship among the steering gear - connecting rod - selsyn, resulting in non-linear accumulation of angle transmission errors. Actual tests show that the overall error of the traditional method can reach more than ±2°. The prior art lacks systematic commissioning rules. When there is an indication deviation, maintenance personnel need to check the mechanical connections and electrical parameters one by one, and the average time for single fault location exceeds 4 hours.

[0047] Among them, the "Steel Sea-Going Ship Classification Rules" of the China Classification Society requires that the rudder angle indication error does not exceed ±1°. However, it is difficult to eliminate dynamic errors such as temperature drift and mechanical clearance with traditional mechanical adjustment methods. The installation and commissioning data rely on manual records, and it is impossible to establish an associated database for commissioning parameters, the ship's draft status, and navigation conditions, resulting in a repeated commissioning rate of 38%.

[0048] In another embodiment of the present invention, zero calibration is performed, and the steering gear, transmitter, and each receiver are synchronized to zero, including:

[0049] Fix the middle position of the steering gear through a mechanical limit device;

[0050] After cutting off the power supply, manually adjust the transmitter rotor to the zero mark;

[0051] Use an oscilloscope to detect the phase consistency of the output voltages of each receiver.

[0052] In the embodiment of the present invention, double guarantees are achieved by mechanical limit (error <0.1°) + electrical phase detection (oscilloscope accuracy 0.05°).

[0053] In another embodiment of the present invention, amplitude calibration is performed. The steering gear is respectively turned to full left rudder and full right rudder, and the error values of each indicating meter are measured, including:

[0054] The test angle for full left rudder is -35° ± 0.5°, and the test angle for full right rudder is +35° ± 0.5°;

[0055] Record the linear error curve of the indication value of each receiver and the actual steering angle of the steering gear.

[0056] In another embodiment of the present invention, according to the error value, the length of the connecting rod is adjusted. When it is overall left-biased, the second connecting rod is shortened; when it is overall right-biased, the second connecting rod is lengthened; when the amplitude is insufficient, the first connecting rod is lengthened; when the amplitude exceeds the limit, the second connecting rod is shortened, including:

[0057] When the error ΔL at full left rudder and the error ΔR at full right rudder satisfy |ΔL - ΔR| > 1°, the length of the first connecting rod is preferably adjusted;

[0058] When ΔL and ΔR are in the same direction and the difference is <0.5°, the length of the second connecting rod is adjusted.

[0059] In another embodiment of the present invention, the method further includes: error compensation, that is

[0060] After the mechanical adjustment is completed, an adjustable resistor network is connected to the receiver circuit, and the residual error is eliminated through electronic compensation, so that the overall accuracy of the system reaches within ±0.2°.

[0061] In another embodiment of the present invention, the electronic compensation includes:

[0062] A variable voltage-dividing resistor is connected in parallel at the signal output end of the receiver;

[0063] Multiple compensation nodes are set according to the measured error curve;

[0064] Temperature drift compensation is performed using metal film resistors with temperature coefficient matching.

[0065] In the embodiment of the present invention, for multiple-stage compensation, compensation nodes are set at 5° intervals to match the typical steering frequency of the ship; for temperature compensation, metal film resistors with TCR < 50 ppm / °C are selected to reduce the temperature drift error by 80%; for electronic fine-tuning, fine compensation of ±0.1° is achieved through the voltage-dividing resistor, and the comprehensive accuracy of the system reaches ±0.2°.

[0066] In another embodiment of the present invention, the length L1 of the first connecting rod is adjusted to be equal to the distance D1 from the center of the steering gear to the installation point of the steering wheel, and the length L2 of the second connecting rod is adjusted to be equal to the distance D2 from the center of the steering gear to the transmitter, including:

[0067] The adjustment accuracy of the lengths of the first connecting rod length L1, the second connecting rod length L2, the distance D1, and the distance D2 is controlled within the range of ±0.5 mm, and the ratio error of L1 / D1 and L2 / D2 does not exceed ±0.1%.

[0068] In another embodiment of the present invention, the method further includes an installation verification step, that is:

[0069] After completion of debugging, full-stroke angle verification tests are performed at 5° intervals;

[0070] A corresponding relationship database between the debugging parameters and the ship's draft state is established;

[0071] A traceable electronic file including the debugging time, the operator, and the test data is generated.

[0072] In an embodiment of the present invention, a method for installation and commissioning of a ship selsyn rudder angle indicator is provided. By installing two sets of selsyn systems, including a transmitter installed in the rudder engine room and a receiver installed in the cab, the stator winding is connected to an AC power supply, and the rotor windings are cross-connected; a parallelogram transmission mechanism composed of a rudder engine rudder wheel, a first connecting rod, and a second connecting rod is constructed, wherein the first connecting rod connects the rudder wheel and the transmitter, and the second connecting rod connects the transmitter and the receiver; adjust the length L1 of the first connecting rod to be equal to the distance D1 from the rudder engine center to the rudder wheel installation point, and adjust the length L2 of the second connecting rod to be equal to the distance D2 from the rudder engine center to the transmitter; perform zero calibration to synchronously zero the rudder engine, the transmitter, and each receiver; perform amplitude calibration, turn the rudder engine to full left rudder and full right rudder respectively, and measure the error values of each indicating meter; adjust the connecting rod length according to the error values, shorten the second connecting rod when the whole is left-biased, extend the second connecting rod when the whole is right-biased, extend the first connecting rod when the amplitude is insufficient, and shorten the second connecting rod when the amplitude exceeds the limit.

[0073] The technical solution of the present invention can solve the technical problems of geometric error accumulation, fault coupling effect, and dynamic compensation absence existing in the prior art.

[0074] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An installation and commissioning method for the rudder angle indication of a marine selsyn, characterized in that, The method includes: S101. Install two sets of synchro systems, including a transmitter installed in the rudder engine room and a receiver installed in the cab. The stator windings are connected to an AC power supply, and the rotor windings are cross-connected. S102. Construct a parallelogram transmission mechanism composed of a rudder wheel, a first connecting rod, and a second connecting rod. The first connecting rod connects the rudder wheel to the transmitter, and the second connecting rod connects the transmitter to the receiver. S103. Adjust the length L1 of the first connecting rod to be equal to the distance D1 from the rudder engine center to the rudder wheel installation point, and adjust the length L2 of the second connecting rod to be equal to the distance D2 from the rudder engine center to the transmitter. S104. Perform zero calibration to synchronously zero the rudder engine, transmitter, and each receiver. S105. Perform amplitude calibration. Turn the rudder engine to full left rudder and full right rudder respectively, and measure the error values of each indicating meter. S106. Adjust the connecting rod length according to the error value. When the whole is left-biased, shorten the second connecting rod; when the whole is right-biased, extend the second connecting rod; when the amplitude is insufficient, extend the first connecting rod; when the amplitude exceeds the limit, shorten the second connecting rod.

2. The installation and commissioning method for ship selsyn rudder angle indication according to claim 1, characterized in that Performing zero calibration to synchronously zero the rudder engine, transmitter, and each receiver includes: Fix the middle position of the rudder engine through a mechanical limit device. Manually adjust the transmitter rotor to the zero position mark after disconnecting the power supply. Use an oscilloscope to detect the phase consistency of the output voltages of each receiver.

3. A method for installation and commissioning of a synchro rudder angle indicator for ships according to claim 1, characterized in that Performing amplitude calibration. Turn the rudder engine to full left rudder and full right rudder respectively, and measure the error values of each indicating meter, including: The test angle for full left rudder is -35° ± 0.5°, and the test angle for full right rudder is +35° ± 0.5°. Record the linear error curve of the indicating value of each receiver and the actual rudder angle of the rudder engine.

4. A method for installation and commissioning of a synchro rudder angle indicator for ships, as claimed in claim 1, characterized in that Adjust the connecting rod length according to the error value. When the whole is left-biased, shorten the second connecting rod; when the whole is right-biased, extend the second connecting rod; when the amplitude is insufficient, extend the first connecting rod; when the amplitude exceeds the limit, shorten the second connecting rod, including: When the error ΔL for full left rudder and the error ΔR for full right rudder satisfy |ΔL - ΔR| > 1°, preferentially adjust the length of the first connecting rod. When ΔL and ΔR are in the same direction and the difference is < 0.5°, adjust the length of the second connecting rod.

5. The installation and commissioning method for a ship selsyn rudder angle indicator according to claim 1, characterized in that, The method further includes: error compensation, that is After completing the mechanical adjustment, connect an adjustable resistor network to the receiver circuit, and eliminate the residual error through electronic compensation to make the overall accuracy of the system reach within ±0.2°.

6. The installation and commissioning method for a ship selsyn rudder angle indicator according to claim 5, characterized in that The electronic compensation includes: Connect an adjustable voltage-dividing resistor in parallel at the receiver signal output end. Set multiple compensation nodes according to the measured error curve. Perform temperature drift compensation using metal film resistors with matching temperature coefficients.

7. A method for installation and commissioning of a synchro rudder angle indicator for ships according to claim 1, characterized in that, Adjust the length L1 of the first connecting rod to be equal to the distance D1 from the rudder engine center to the rudder wheel installation point, and adjust the length L2 of the second connecting rod to be equal to the distance D2 from the rudder engine center to the transmitter, including: The length adjustment accuracy of the first connecting rod length L1, the second connecting rod length L2, the distance D1, and the distance D2 is controlled within ±0.5 mm, and the ratio error of L1 / D1 and L2 / D2 does not exceed ±0.1%.

8. A method for installation and commissioning of a synchro rudder angle indicator for ships, characterized in that The method further includes an installation verification step, that is: After completing the debugging, conduct a full-stroke angle verification test at intervals of 5°. Establish a corresponding relationship database between the debugging parameters and the ship draft state. Generate a traceable electronic file containing the debugging time, operator, and test data.

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