Initiating explosive device initiation process parameter identification method
An identification method and process parameter technology, which is applied in the field of identification of pyrotechnics detonation process parameters, can solve the problems of insufficient identification accuracy of the least square method, low identification accuracy of the random gradient method, and poor identification effect, and achieve good applicability , Estimated accuracy improvement, and the effect of faster estimated accuracy
Active Publication Date: 2022-03-25
NANTONG UNIVERSITY
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Problems solved by technology
[0003] The identification accuracy of the least squares method is not ideal, and the identification effect is often not good in practical applications; the identification accuracy of the stochastic gradient method is not high and the convergence is slow; the gradient descent method has stable convergence but slow convergence speed, while the Newton-Gauss method has fast convergence speed , can solve the problem of slow convergence of the gradient descent algorithm, but the Newton-Gauss method may not converge
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Embodiment 1
[0074] The schematic diagram of the rechargeable ignition circuit of the electric explosive device used in this example is as follows figure 2 shown. Among them, u(t) is the power supply U s That is, the given voltage in the charging circuit; y(t) is the current in the discharging circuit; R s For the charging resistor, the diode in the charging circuit prevents the current from flowing backward; R 1 It is the current limiting resistor in the discharge circuit to prevent excessive current in the circuit; R f Is the resistance of the electric detonator; C is the capacitance, which realizes the detonation of the pyrotechnic product by discharging it; S 1 , S 2 They are the control switches of the charging circuit and the discharging circuit respectively.
[0075] see Figure 1 to Figure 4 , the technical solution provided by the present invention is a method for identifying parameters in the detonation process of pyrotechnic products, and the specific steps are as follows...
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The invention provides an initiating explosive device initiation process parameter identification method, belongs to the technical field of initiating explosive device parameter identification, and solves the problem of low convergence speed of a gradient descent algorithm. According to the technical scheme, the identification method specifically comprises the following steps that 1, a Volterra model of the initiating explosive device initiation process is established; and step 2), an identification process of a Levenberg-Marquardt recursive algorithm is constructed. The method has the advantages that the parameter identification model of the initiating explosive device detonation process is established, the Levenberg-Marquardt recursive algorithm is used for identifying the parameters of the detonation process, the algorithm has the advantages of being high in convergence speed and high in estimation precision, and the identification method has good applicability to parameter identification of the initiating explosive device detonation process.
Description
technical field [0001] The invention relates to the technical field of pyrotechnics parameter identification, in particular to a parameter identification method for pyrotechnics detonation process. Background technique [0002] Explosives are a general term for one-time use components and devices that contain gunpowder or explosives, which burn or explode after being stimulated by the outside, and are used to ignite gunpowder, detonate explosives or perform mechanical work. Pyrotechnics are very sensitive to environmental temperature, humidity and other factors, and there is nonlinearity in the detonation process, which leads to serious errors between theoretical results and actual results. The Volterra series model is the extension of the impulse response function in the linear system to the nonlinear system, and the impulse response function of the linear system can express the intrinsic characteristics of the circuit system, so the Volterra series model can also express t...
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IPC IPC(8): G06F30/20G06F17/16G06F17/18G06F119/10G06F119/18
CPCG06F30/20G06F17/16G06F17/18G06F2119/10G06F2119/18
Inventor 李俊红储杰杨奕宗天成宋伟成蒋一哲蒋泽宇张泓睿严俊肖康
Owner NANTONG UNIVERSITY