Real-time simulation of a COGAG naval ship propulsion system

Abstract

Design and optimization of the propulsion system is a crucial task of the ship design process. The behaviour of the propulsion system, in transient conditions as well as in steady state, is greatly affected by the capability of the control system to manage the available power and to achieve the desired performance in the shortest time.

The selection of a proper control scheme is a trade-off between different and conflicting needs. Two of the opposites are: increasing the ship operability by adding more functions and more controls; and reducing the control system development and installation time and cost.

In this paper, the rapid prototyping and testing procedure for the development of the propulsion controller of the new Italian aircraft carrier Cavour is presented, using real-time hardware-in-the-loop (RT-HIL) simulation. The procedure is based on a wide use of simulation technology. First, a complete dynamical model of the ship propulsion plant was developed. Then, batch simulation was used to develop the best possible control scheme. Finally, RT-HIL simulation was used to debug the real controller software and to tune the controller parameters before sea trials.

The application of the procedure led to a significant reduction in the development phase of the controller design. Furthermore, the adoption of the RT-HIL technology greatly reduced the time spent to tune the control system during the ship delivery phase.

Keywords

marine propulsion marine control systems simulation

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References

Altosole

Figari

‘Dynamic behaviour and stability of marine propulsion systems.’

Proc. IMechE, Part M: J. Engineering for the Maritime Environment 221 (4) (2007): 187–205 DOI: 10.1243/14750902JEME58.

Benvenuto

Campora

Figari

Ruggiero

‘A dynamic model for the performance prediction of the waterjet propulsion system.’ In Proceedings of PRADS'98, Conference on

Practical design of ships and mobile units, The Hague, Netherlands, 1998, pp. 727–733 (Elsevier Science BV).

Benvenuto

Figari

Ruggiero

‘Waterjet propulsion system performance prediction by dynamic numerical simulation.’ In Proceedings of 5th Symposium on

High speed marine vehicles, Capri, 25–26 March, 1999, paper no. I.4.

Benvenuto

Figari

Moreira

Guedes Soares

‘Dynamic modeling of waterjet propulsion plants.’ In Proceedings of IMAM 2000, International Maritime Association of Mediterranean, IX Congress, Ischia, Italy, 2–6 September, 2000, vol. 3, pp. 52–60

Figari

‘Mathematical modelling and simulation of a waterjet propulsion plant.’ In Proceedings of the 33rd WEGEMT School on

Fast ship propulsion plants, Genova, Italy, 2000, paper no. 21.

Benvenuto

Campora

Carrera

Figari

‘Ship stopping manoeuvre: Simulation of the propulsion system behaviour.’ In Proceedings of International Conference on

Ship and shipping research, NAV 2000, Venice, 20–22 September, paper no. 8.4.

Benvenuto

Brizzolara

Figari

‘Simulation of the propulsion system behaviour during ship standard manoeuvres.’ In Proceedings of PRADS 2001 Conference on

Practical design of ships and other floating structures, Shanghai, China, 2001, pp. 657–663 (Elsevier Science BV)

Campora

Figari

‘Numerical simulation of ship propulsion transients and full scale validation.’

Proc. IMechE, Part M: J. Engineering for the Maritime Environment 217 (1) (2003): 41–52 DOI: 10.1243/147509003321623130.

Altosole

Figari

D'Arco

‘Design and optimisation of propulsion systems by dynamic numerical simulation.’ In Proceedings of NAV 2003, Palermo, Italy, vol. 1, paper no. 4.8.

10.

Altosole

Benvenuto

Figari

Campora

‘Dynamic performance simulation of a naval propulsion system.’ In Proceedings of Summer Computer Simulation Conference (SCSC04), San Josè, California, 26–28 July 2004, pp. 243–248

11.

Benvenuto

Campora

Carrera

Figari

‘Interaction between ship propulsion plant automation and simulation.’ In Proceedings of IMAM 2005, Lisbon, Portugal, vol. 1, pp. 617–626

12.

Altosole

Benvenuto

Figari

‘Performance prediction of a planning craft by dynamic numerical simulation.’ In Proceedings of the Symposium on

High speed marine vehicles (HSMV 2005), Naples, Italy, paper no. 3.4.

13.

Figari

Maffioletti

Giuffra

Michetti

‘Simulation for the design of the propulsion control of the aircraft carrier ‘Cavour’.’ In Proceedings of the International Conference on

Ship and shipping research (NAV 2006), Genova, Italy, June 2006, paper no. 7.2.

14.

Altosole

Benvenuto

Campora

‘Marine gas turbine propulsion system simulation: Comparison of different approaches.’ In Proceedings of the International Conference on

Ship and shipping research (NAV 2006), Genova, Italy, June 2006, paper no. 7.1.

15.

Bodnaruk

Rubis

C J

‘Acceleration performance analysis of a gas turbine destroyer escort.’

J. Engng Power, Jan 1971, 49–56.

16.

Holm

J T

‘Marine gas turbine power plant performance practices.’ SNAME T&R Bulletin 3–28

17.

Rubis

C J

‘Guide for centralized control and automation of ship's gas turbine propulsion plant.’ SNAME T&R Bulletin 3–29

18.

Rubis

C J

Harper

T R

‘Governing ship propulsion gas turbine engines.’

SNAME Trans. 94 (1986): 283–308

19.

Smith

D L

Stammettti

V A

‘Comparative controller design for a marine gas turbine propulsion system.’

Trans. ASME, April 1990, 122, 182–186.

20.

Rana

R K

Damaodaran

K A

Kang

H S

Gokhale

S S

‘Governing of ship propulsion gas turbine engine in a seaway.’ In Proceedings of Eleventh Ship Control Systems Symposium, Southampton, UK, 1996.

21.

Tortarolo

‘Marine gas turbine control systems.’ In Proceedings of 33rd WEGEMT School on

Fast ship propulsion plants, Università di Genova, Genoa, Italy, May 2000, paper no. 14.

22.

Calabrese

M A

Skarbek

L F

Shah

P H

Yassine

M K

‘Using a digital fuel control system and digital engine controller for US NAVY LM2500 engines.’ ASME Turbo Expo 2002.

23.

Saravanamuttoo

H I H

Fawke

A J

‘Digital computer methods for the prediction of gas turbine response.’

Soc. Auto. Engineers (1971): paper no. 710550.

24.

Torella

Liotti

‘Numerical and experimental analysis of the transient behaviour of a turboprop.’ 42nd National Congress of the Italian Thermo-technical Association, Genoa, Italy, 8–11 September, 1987 (in Italian), vol. 2, pp. 119–128

25.

Sellers

Teren

‘Generalized dynamic engine simulation techniques for the digital computer.’ AGARD-CP-151, 1974, paper no. 23.

26.

Campora

Gioia

‘Dynamic performance prediction of an aeronautical gas turbine.’ 44th National Congress of the Italian Thermo-technical Association, Cosenza, Italy, 12–15 September, 1989 (in Italian), vol. 2, pp. 55–67

27.

Benvenuto

Campora

‘A gas turbine modular model for ship propulsion studies.’ In Proceedings of the 7th Symposium on

High speed marine vehicles, Naples, Italy, 21–23 September, 2005, paper no. 3.2.

28.

Cohen

Rogers

G F C

Saravanamuttoo

H I H

Gas turbine theory, edition 3 (1987): 130–132 (Longman Scientific & Technical, England).

29.

El-Masri

M A

‘GASCAN – an interactive code for thermal analysis of gas turbine systems.’

Trans. ASME, J. Engng Gas Turbine Power 110 (1988): 201–209