Abstract A new extremum-seeking control (ESC) strategy is proposed that can be fully configured from just two macro plant characteristics and that has a negligible oscillation amplitude at steady-state. The strategy is built around a relay with a single gain parameter that affects both the speed of convergence and the amplitude of perturbation. The relay is in a feedback loop that drives the average gradient of a cost function to zero by switching between two states. The strategy is self-perturbing thereby eliminating the need for the traditional ESC dither signal. A second feedback loop adjusts the gain of the relay so that the perturbation amplitude reduces to a small value at steady-state. The ESC strategy was developed with the intent of making it simple to implement and thus viable for use in low cost application areas such as energy systems in buildings. Simulation results using a detailed simulation model of a very common packaged air-conditioning system are presented that demonstrate how the strategy can improve the energy-efficiency compared to current practice.

中文翻译：

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具有自适应增益的自扰极值搜索控制器

摘要 提出了一种新的极值搜索控制 (ESC) 策略，该策略可以完全由两个宏设备特性进行配置，并且在稳态下具有可忽略的振荡幅度。该策略围绕具有单个增益参数的继电器构建，该参数影响收敛速度和扰动幅度。继电器处于反馈回路中，通过在两种状态之间切换，将成本函数的平均梯度驱动为零。该策略是自扰的，从而消除了对传统 ESC 抖动信号的需要。第二个反馈回路调节继电器的增益，使扰动幅度在稳态时减小到一个小值。制定 ESC 策略的目的是使其易于实施，从而适用于低成本应用领域，例如建筑能源系统。展示了使用非常常见的成套空调系统的详细仿真模型的仿真结果，展示了与当前实践相比，该策略如何提高能效。