Title
Bi-objective dynamic optimization of a nonlinear time-delay system in microbial batch process.
Abstract
In this paper, we propose a bi-objective dynamic optimization model involving a nonlinear time-delay system to optimize the 1,3-propanediol (1,3-PD) production in a microbial batch process, where the productivity of 1,3-PD and the consumption rate of glycerol are taken as the two objectives. The initial concentrations of biomass and glycerol, and the terminal time of the process are the decision variables. By a time-scaling transformation, we first transform the problem to the one with fixed terminal time but involving a new system with variable time-delay. The normalized normal constraint method is then used to convert the resulting problem into a sequence of single-objective dynamic optimization problems. A gradient-based optimization method incorporating the constraint transcription technique is developed to solve each of these single-objective dynamic optimization problems. Finally, numerical results are provided to demonstrate the effectiveness of the proposed solution method.
Year
DOI
Venue
2018
10.1007/s11590-016-1105-6
Optimization Letters
Keywords
Field
DocType
Nonlinear time-delay system, Bi-objective optimization, Dynamic optimization, Normalized normal constraint, Batch process
Continuous optimization,Mathematical optimization,Discrete optimization,Vector optimization,Nonlinear programming,Multi-swarm optimization,Batch processing,Random optimization,Optimization problem,Mathematics
Journal
Volume
Issue
ISSN
12
6
1862-4480
Citations 
PageRank 
References 
2
0.39
6
Authors
5
Name
Order
Citations
PageRank
Chongyang Liu1315.81
Zhaohua Gong2225.31
K. L. Teo31643211.47
R.C. Loxton413016.50
En-Min Feng581.87