Two-degree-of-freedom H-infinity control of combustion in diesel engine using a discrete dynamics model

• Published in: Control theory and technology 2017-05, Vol.15 (2), p.109-116
• Main Authors: Hirata, Mitsuo, Ishizuki, Sota, Suzuki, Masasyasu
• Format: Article
• Language: English
• Subjects: Combustion control; Complexity; Computational Intelligence; Control; Control and Systems Theory; Control methods; Control stability; Control systems design; Degrees of freedom; Diesel engines; Engine control; Engineering; Feedback control; Feedforward control; H-infinity control; H∞控制; Mechatronics; Nonlinear dynamics; Optimization; Robotics; Systems Theory; Transient response; 动力学模型; 柴油机; 燃烧; 离散; 自由
• ISSN: 2095-6983; 2198-0942
• DOI: 10.1007/s11768-017-6144-8

This paper proposes an H-infinity combustion control method for diesel engines. The plant model is the discrete dynamics model developed by Yasuda et al., which is implementable on a real engine control unit. We introduce a two-degree-of-freedom control scheme with a feedback controller and a feedforward controller. This scheme achieves both good feedback properties, such as disturbance suppression and robust stability, and a good transient response. The feedforward controller is designed by taking the inverse of the static plant model, and the feedback controller is designed by the H-infinity control method, which reduces the effect of the trubocharger lag. The effectiveness of the proposed method is evaluated in simulations using the nonlinear discrete dynamics model.