CAJ | 학술논문

为提高弓网振动试验系统的正弦信号跟踪精度，提出一种改进幅相自适应控制方法。在时域给出正弦信号的幅值误差、相位误差和中心位置误差的辨识公式，采用线性插值的方式对相位误差以超过系统控制周期的精度进行辨识。结合辨识误差，建立3个参数的迭代序列，并在考虑低频快速性与高频稳定性的基础上，对迭代速率进行分段处理。最后分别给出辨识和迭代部分有限状态机程序的计算机实现方法。由弓网振动试验系统的实验数据表明，该改进算法能有效提高正弦信号的跟踪精确，可广泛应用于工程领域。
위제고궁망진동시험계통적정현신호근종정도，제출일충개진폭상자괄응공제방법。재시역급출정현신호적폭치오차、상위오차화중심위치오차적변식공식，채용선성삽치적방식대상위오차이초과계통공제주기적정도진행변식。결합변식오차，건립3개삼수적질대서렬，병재고필저빈쾌속성여고빈은정성적기출상，대질대속솔진행분단처리。최후분별급출변식화질대부분유한상태궤정서적계산궤실현방법。유궁망진동시험계통적실험수거표명，해개진산법능유효제고정현신호적근종정학，가엄범응용우공정영역。
This paper proposes a modified amplitude?phase adaptive control ( MAPAC) for increasing the sinusoidal motion precision of the pantograph?catenary test system. Amplitude error, phase error and center position error of the sinusoidal signal are identified in the time domain. Through linear interpolation approach, phase lag time can be re?duced to a smaller value than the system control period. Iterative sequences of the three parameters are established with error identification and an iteration rate for subsections is built with both the rapidity in low frequency and the stability in high frequency taken into account. The stateflow programs are divided into the identification and iteration sections. The experimental result for tracing errors using the pantograph?catenary vibration test system shows that the novel control strategy significantly improves the tracking accuracy of the sinusoidal test signal. It can be widely used in other engineering systems that require precision for tracing sinusoidal motions.