1/8/2024 0 Comments Mathmod for macbookThe air flow is steered by the valves to regulate the pressure of the equalising reservoir, generating the desired braking force. In the pneumatic brake system, the equalising reservoir and valves are two key components. Pneumatic brake system plays an important role in ensuring safe operation of trains, which uses compressed air as energy medium to generate braking power. Both simulation and experiment results show that the accurate pressure control and low switching activities of valves can be achieved by the proposed method when compared with existing methods. A mixed integer linear program is formulated to solve the MPC problem in an efficient way. Then, the braking control problem is recast as a hybrid MPC problem, which jointly optimises the pressure tracking precision and the valve switching. In order to model the hybrid behaviour caused by continuous dynamics of the pressure and discrete features of solenoid valves, the mixed logic dynamical system theory is applied. the precise pressure tracking and the valve switching reduction. To address the issue, a hybrid model predictive control (MPC) method is proposed for implementing the multi-objective optimisation in this paper, i.e. However, due to switching characteristics of on/off solenoid valves, the precise pressure control and low switching activities of valves are difficult to guarantee simultaneously during braking. Pneumatic brake systems are crucial for the operation of trains. IET Generation, Transmission & Distribution. ![]() IET Electrical Systems in Transportation.IET Cyber-Physical Systems: Theory & Applications.IET Collaborative Intelligent Manufacturing.CAAI Transactions on Intelligence Technology.
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