Method and system for testing a control system of a marine vessel

A technology for control systems and ships, applied in remote control testing and ship simulation systems, remote testing of ships, and remote acquisition of control system features, which can solve problems such as not considering the impact of waves

CN1914087AInactive Publication Date: 2007-02-14MARINE CYBERNETICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2007-02-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for verifying a control system (2) of a vessel (4), in which said control system (2) in its operative state receives sensor signals (7) from sensors (8) and command signals (9) from command input devices (10), and as a response provides control signals (13) to actuators (3) in order to maintain a desired position, velocity, course or other state of said vessel (4), characterized by the following steps: during a time (t0), disconnecting the reception of real sensor signals (7a, 7b, 7c, ..) and replacing said real sensor signals by a test sequence (T0) of artificial measurements (7a', 7b', 7c', ..) from a test signal source (41); letting said control system (2) work based on the artificial sensor signals (7, 7') to generate control signals (13') to be recorded as a response (S0) to said first test sequence (T0) for said first time (t0) on a control signal logger (42) and storing response (SO) to the test sequence (T0) as the control system's (2) ''signature'' response (S0); said method having the purpose of, at a later time (t1, t2, t3, ..), to use the test sequence (T0) input to the control system (2), and record a later response (S1, S2, S3, ...) and determining whether said later response similar to the signature response (S0) to verify that said control system (2) is unchanged, or not.
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Description

technical field

[0001] The present invention relates to a system for obtaining a verifiable control system signature after acceptance of a vessel at sea by testing and / or qualification by a classification society. Furthermore, the invention relates to remote testing of ships, and a combination of these two methods, ie remote acquisition of control system features. Furthermore, the present invention provides a system for remote control testing and ship simulation.

[0002] A control system can generally be thought of as a system that provides control signals to a physical process and receives measurement data from equipment or a physical process, or possibly from other physical processes. Measurement data and algorithms are used to calculate control signals so that the physical system responds as desired. If the physical process is a motoring ship, then the control system can receive measurements in the form of the ship's position, heading, and speed, and can thus compute pro...

Examples

Embodiment Construction

[0069] 1.1 General description of the ship and control system

[0070] The invention will now be described with reference to some embodiments of the invention shown in the accompanying drawings. The present invention comprises a system and method for testing a control system (2) on a ship (4) (e.g. vessel, drilling platform, oil production platform) via a communication channel (6) in real time, an overview of which is shown in Figure 4a and Figure 4b and 4c show details. The control system (2) may include control and monitoring of the vessel (4). Testing of the control system (2) may include simulation of normal and extreme conditions of the ship (4) and simulation of normal variations to such normal and extreme conditions, e.g. normal conditions under simulated calm sea conditions (H1) sports. In addition, the testing of the control system (2) can also simulate normal motion in simulated extreme sea conditions (H2), under failure conditions such as loss of engine thrust by...