What is the scientific lock associated with developing adaptable model predictive controllers?5 answersThe scientific challenge associated with developing adaptable model predictive controllers lies in effectively managing computational complexity without compromising stability and feasibility guarantees. Traditional approaches often simplify models or shorten prediction horizons to handle complexity, risking instability. To address this, researchers have proposed adaptive strategies that adjust control horizons based on dynamic programming inequalities, ensuring stability and suboptimality guarantees. Additionally, an adaptive model-predictive control (MPC) for systems with uncertainties utilizes min-max optimization principles and parameter estimation to maintain feasibility and stability, demonstrated through theoretical proofs and simulations. Furthermore, a novel adaptive MPC variant integrates Bayesian optimization and density ratio estimation to automatically estimate control and model parameters, enhancing robustness in the face of uncertainties and noise.
Why using Model Predictive Control?5 answersModel Predictive Control (MPC) is used for several reasons. First, it can handle complex nonlinear systems with multi-objectives and various constraints, making it suitable for a wide range of control problems. Second, MPC incorporates measurement feedback, allowing it to naturally reject disturbances and improve control performance. Third, MPC is a closed-loop optimization framework that can control complex multi-input, multi-output dynamical systems under state and input constraints. Fourth, MPC can generate practical optimized control sequences even when the model is inadequate, making it useful in situations where accurate modeling is challenging. Finally, MPC has been successfully applied in power electronics, particularly for multi-objective control problems, such as multilevel inverter applications.
How is ML used in reduced order modelling?4 answersMachine Learning (ML) is used in reduced order modeling to build Closed Parametric Reduced Order Models (ML-PROM) relevant to fluid dynamics. ML algorithms such as dynamic mode decomposition, sparse identification for nonlinear dynamics, and neural networks are employed to produce data-driven ROMs. These methods can be used with direct measurement data, computational data, or both to generate stable ROMs. Another ML platform called FastSVD-ML-ROM utilizes singular value decomposition (SVD) update methodology, convolutional autoencoders, feed-forward neural networks, and long short-term memory networks to handle large-scale numerical problems dealing with transient nonlinear partial differential equations. The ML algorithms and frameworks enable accurate approximation of high-fidelity solutions while capturing the dominant aspects of the physical behavior.
What are the advantage of the MLP regressor model?5 answersThe advantage of the MLP regressor model is its ability to accurately predict various outcomes in different domains. The model can be used for drug development, such as predicting the bioactivity values of new compounds for breast cancer treatment. It can also be applied to stock market analysis, where it uses news data to predict stock prices with high accuracy. Additionally, the MLP regressor model is effective in monitoring the depth of anesthesia during surgical procedures, providing accurate estimations of the patient's conscious level. The model outperforms other prediction algorithms, achieving highly accurate indexes with minimized feature sets and a deep learning-based approach. Furthermore, the MLP regressor model can incorporate financial news along with historical stock price data to predict upcoming stock prices, achieving high accuracy in trend and future trend predictions.
What ml model can run on drone?5 answersMachine learning (ML) models that can run on drones are being developed to enable intelligence in the sky. These models are designed to handle dynamic behaviors at various levels, including tasks, models, and layers within a model. The real-time multi-model ML (RTMM) workloads, such as AR/VR and drone control, require ML models that can adapt to unpredictable system loads and meet deadlines. The scheduling methodology proposed in SDRM3 effectively handles the dynamicity in RTMM workloads and reduces the overall energy-delay-product (EDP)-equivalent metric for real-time applications. Additionally, the FlockAI framework supports the rapid deployment and repeatable testing of ML-driven drone applications, allowing users to deploy ML models, configure on-board/remote inference, and monitor drone resource utilization and energy consumption. The DRESS-ML domain-specific language enables the modeling of exceptional situations and self-adaptive behaviors for drone-based applications, providing resilience and continuous execution.
How ML helps in modeling of Li ion battery?5 answersMachine learning (ML) strategies, such as multiple linear regression, support vector regression (SVR), and random forest, are used to model Li-ion batteries. These ML strategies provide accurate state-of-health (SoH) estimation, which is essential for optimizing battery usage and improving diagnostic measures like state of charge. ML techniques are also used to develop precise battery models for battery management systems. These models help predict the state of charge and behavior of Li-ion batteries, and can accurately predict current-voltage performance. Data-driven approaches, using laboratory measurements and manufacturer datasheets, are used to build battery models, resulting in improved modeling accuracy. Additionally, a data-driven linear model using dynamic mode decomposition is proposed, bridging the gap between abstracted and empirical models of Li-ion batteries. This model provides an interpretable linear model in state space form, requiring only one discharge cycle for generation.