In an electronically controlled VE distributive pump, the fuel quantity actuator is a significant component. It is responsible for governing the quantity of fuel being injected into diesel-type engines. The FQA system has nonlinearities and always confronts disturbances caused by the external torque and the input voltage variation in the real working condition, which can be regarded as a lumped disturbance. However, most existing results only focus on dealing with the so called constant disturbance in the FQA system which fail to remove the influence of time-varying disturbances. Therefore, to deal with the nonlinearities and reject the lumped disturbance, a reduced-order generalized proportional integral observer (GPIO) based sliding mode control approach is presented. By using a reduced-order GPIO, time-varying disturbances can be estimated accurately. In addition, a theoretical analysis of the closed-loop system is given. The proposed control scheme exhibits a satisfactory performance in terms of transient behavior and disturbance rejection. Finally, a set of experimental tests are carried out to validate the feasibility as well as efficiency of the proposed control framework.

中文翻译：

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使用降序GPIO的燃油量执行器系统基于输出反馈的滑模控制

在电子控制的VE分配泵中，燃油量执行器是重要的组成部分。它负责控制喷入柴油发动机的燃油量。FQA系统具有非线性，在实际工作条件下始终会遇到由外部转矩和输入电压变化引起的干扰，可以将其视为集总干扰。但是，大多数现有结果仅集中于处理FQA系统中所谓的恒定干扰，这种干扰无法消除时变干扰的影响。因此，为了处理非线性并消除集总干扰，提出了一种基于降阶广义比例积分观测器（GPIO）的滑模控制方法。通过使用降阶GPIO，随时间变化的干扰可以准确估算。另外，给出了闭环系统的理论分析。所提出的控制方案在瞬态行为和干扰抑制方面表现出令人满意的性能。最后，进行了一组实验测试，以验证所提出的控制框架的可行性和效率。