Optimal Impulse Control for Cow Parturient Paresis Treatment Design
Parturient paresis(milk fever) is a common disease associated with the onset of parturition in dairy cows. The disease is considered due to a large increased demand for calcium. Several work has mathematically and biologically modelled this process. Based on the existing models on calcium dynamics in diary cows, an optimal impulse treatment is proposed in this paper. The treatment is executed at a fixed time interval and lasts a relatively very small time duration, which is termed as a 'fixed time impulse' control. For the optimization, with a selected objective function, a series of equations for optimality are to be satisfied, including control equations, costate equations and state equations. Those impulsive differential equations form a two point boundary value problem and are difficult to solve. A numerical scheme, SNAC(Single Network Adaptive Critic), is then proposed. The algorithm key is to use one neural network to capture the optimal relation between the pre-impulse state and the after-impluse costate. After the neural network is trained and the relation is captured, the optimal impulse dosage of medicine can be provided when a parturient paresis is detected, and the cow's calcium level can be brought back to the normal status. Simulations are presented for illustrative purposes.
X. Wang et al., "Optimal Impulse Control for Cow Parturient Paresis Treatment Design," Proceedings of the 2016 14th International Conference on Control, Automation, Robotics and Vision (2016, Phuket, Thailand), Institute of Electrical and Electronics Engineers (IEEE), Nov 2016.
The definitive version is available at https://doi.org/10.1109/ICARCV.2016.7838824
2016 14th International Conference on Control, Automation, Robotics and Vision, ICARCV 2016 (2016: Nov. 13-15, Phuket, Thailand)
Mechanical and Aerospace Engineering
Keywords and Phrases
Boundary value problems; Calcium; Computer vision; Differential equations; Robotics; Control equations; Costate equations; Fixed time interval; Impulsive differential equation; Objective functions; Single network adaptive critics; Treatment design; Two point boundary value problems; Equations of state
International Standard Book Number (ISBN)
Article - Conference proceedings
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