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针对热驱动型双弱连接超流体陀螺的幅值-角速度单值求解区间因工作曲线呈周期性而制约超流体陀螺量程的突出问题,提出了一种基于重叠因子优化的超流体陀螺量程扩展方法。首先在明晰陀螺量程受限机理的基础上,设计了幅值锁定量程扩展方案。其次分析了热相位与温升延时的关系,引入重叠因子的概念,提出了一种基于重叠因子的遗传优化方法来实现幅值锁定参数优化:通过间接编码三角形隶属函数左半宽度,在避免出现相邻隶属函数无重叠或重叠太多的前提下,对模糊线性隶属函数进行遗传优化,寻找幅值锁定系统最优参数。通过与传统比例(P)控制下幅值锁定的仿真对比表明,该方法能够使超流体陀螺的薄膜幅值快速且稳定地锁定在期望值,在保证测量精度的同时提高了陀螺系统的量程范围。
Aiming at the prominent problem of the single-value range of the amplitude-angular velocity of a thermally-driven double-weakly connected superfluid gyro constrained by the cyclicality of the working curve, a super-fluid-body gyro expansion method based on overlap factor optimization . First of all, on the basis of clarifying the limited mechanism of gyro range, a scheme of amplitude locking range expansion is designed. Secondly, the relationship between thermal phase and temperature rise delay is analyzed, and the concept of overlap factor is introduced. A genetic optimization method based on overlap factor is proposed to optimize amplitude locking parameters. By indirectly coding the left half width of triangular membership function, Under the premise of no overlapping or overlapping of adjacent membership functions, the fuzzy linear membership function is optimized by genetic algorithm to find the optimal parameters of the amplitude-locked system. Simulation results of the amplitude locking under the traditional proportional (P) control show that this method can quickly and stably lock the film amplitude of the superfluid gyro at the desired value, and improve the measuring range of the gyro system while ensuring the measurement accuracy.