Development of Smart Elements of Automobile due to a System Fusion Design

为了将执行器、传感器和控制器与材料和结构部件无缝集成，必须同时对结构和控制子系统进行优化设计。这是因为通过传统方法获得的参数对于整个系统可能不是最优的。在传统的设计方法中，首先优化结构参数，然后设计最优控制器。在同时优化设计中，考虑了结构与控制器的相互作用，同时对结构子系统和控制子系统的参数进行优化，提出了一种采用统一H_2 /H_1目标函数的同时优化设计方法，该方法对改善受控结构动力特性的问题具有通用性。以抑制强迫振动为目标，将该方法应用于弹簧支承梁的设计实例。同时优化问题是通过一系列的最小化目标函数的结构参数（保持控制器固定）和控制器增益（保持结构参数固定）。分别采用序列二次规划法和线性矩阵不等式法对结构子系统和控制子系统进行了优化设计，并将该方法应用于某轿车方向盘和门板的设计。智能板被提出作为集成了执行器和传感器的结构部件。

In order to seamlessly integrate actuators, sensors and controls with material and structural components, a simultaneous optimal design of structural and control subsystems is necessary. This is because the parameters obtained by traditional methods may not be optimal for the whole system. In traditional design methods, the structural parameters are optimized first and then an optimal controller is designed. In simultaneous optimal design, the interaction of the structure and controller is considered and the parameters of structural and control subsystems are optimized simultaneously.We proposed a new method of simultaneous optimization using unified H_2 /H_- objective functions, which possesses generality for problems involving the improvement of the dynamic characteristics of control led structures. This method was applied to the example of the design of a spring-supported beam, with the goal of suppressing of forced vibrations. The simultaneous optimization problem was solved by a sequence of minimization of the objective function over the structural parameters (holding the controller fixed) and over the controller gains (holding the structural parameters fixed). The sequential quadratic programming method and the linear matrix inequality method were used in the optimization of the structural and control subsystems, respectively.Furthermore, this method was applied to the design of a steering wheel and a door panel of car. Smart boards were proposed as a structural component integrated with actuators and sensors.