Introduction and intelligence of maritime patrol ship

The collision avoidance function of intelligent ship is also an important issue to be considered in the course of ship navigation. Different ship types have different turning radii and different turning angular speeds at different speeds. In order to realize the ARPA function of ship collision avoidance, the mathematical model of each ship type is different. If it is a transport ship, different (load), its characteristics are not the same. In other words, the ship collision avoidance ARPA software also has the ability of "continuous learning" to adapt to the needs of maritime patrol ships. Compared with the traditional "ARPA function", the new navigation radar has an interface relationship with the "ship energy efficiency management system" to realize the input and real-time correction of its own ship characteristics data.

Compared with the traditional "observation", the new navigation radar has to interface with the "ship meteorological instrument" and other meteorological equipment to obtain automatic input and real-time correction of weather, wave and other meteorological characteristics data. According to the size of the target needs to change the range, or need to adjust the gain, the new navigation radar itself can achieve automatic adjustment. In addition, with the help of the shore-based support center, automatic adjustment can also be achieved remotely.

Modern navigation radar displays can be integrated with the Electronic Chart Display and Information System (ECDIS) and the Automatic Ship Identification System (AIS). This radar screen is the real-time scene of smart ships. Compared with the traditional "fusion observation", the new navigation radar can have an interface relationship with the external communication system or intelligence system, and can transmit the "real-time scene" to the shore-based support center in order to achieve shore-based interaction, better safeguard China's interests, and realize the scheduled functions of maritime patrol ships.

3. Ship power

Maritime patrol boats have clear requirements for speed, requiring them to reach the accident area within a specified time, and require them to be able to achieve a long cruise. This requires the performance, especially speed and reliability, of the power plant of maritime patrol boats. The current ship power system types can be divided into: diesel engine power system and gas turbine power system, the former advantages are: safe and reliable, economical start fast power range large part of the load operation performance good efficiency considerable technology is relatively mature, and more than half of the ships on the market is the use of this system; The latter has excellent characteristics such as light weight, large power, small size and environmental protection, but it also has the disadvantages of high fuel consumption and high fuel requirements. At present, the development trend of domestic ship power system: conventional intelligent diesel engine power system with large output power of dual fuel single cylinder, electric power system (AC frequency conversion technology, easy to arrange, energy saving, low noise, easy to achieve automatic control), and hybrid power system (high reliability, often used in military ships and large ocean merchant ships).

PID controller is often used in the process of speed regulation of Marine steam turbine, mainly because PID algorithm has the characteristics of simple structure and easy implementation, which is conducive to the realization of intelligent control of power system. However, the conventional PID algorithm requires manual trial-and-error, which is not conducive to the realization of ship intelligence. The fuzzy PID controller based on fuzzy neural network is adopted for intelligent transformation.