title: Pressure prediction model based on artificial neural network optimized by genetic algorithm and its application in quasi-static calibration of piezoelectric high-pressure sensor.
abstract: This paper applies back propagation neural network (BPNN) optimized by genetic algorithm (GA) for the prediction of pressure generated by a drop-weight device and the quasi-static calibration of piezoelectric high-pressure sensors for the measurement of propellant powder gas pressure. The method can effectively overcome the slow convergence and local minimum problems of BPNN. Based on test data of quasi-static comparison calibration method, a mathematical model between each parameter of drop-weight device and peak pressure and pulse width was established, through which the practical quasi-static calibration without continuously using expensive reference sensors could be realized. Compared with multiple linear regression method, the GA-BPNN model has higher prediction accuracy and stability. The percentages of prediction error of peak pressure and pulse width are less than 0.7% and 0.3%, respectively.
authors.affiliation: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
authors.forename: Tingwei
authors.initials: T
authors.lastname: Gu
authors.affiliation: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
authors.forename: Deren
authors.initials: D
authors.lastname: Kong
authors.affiliation: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Jiang
authors.affiliation: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Shang
authors.affiliation: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Chen