Based on characteristics of PMAs and pulse-width modulation (PWM) high-speed on-off valves, the multi-input 4th-order affine nonlinear mathematical model of the system was achieved.

• 在研究PMA和脉宽调制(PWM)高速开关阀特性的基础上，建立了系统的多输入4阶仿射非线性数学模型。