摘要
振动主动控制系统是通过获取振动传感器信号、驱动作动器施加作动力以降低平台振动水平的机电综合系统。对于振动环境恶劣的装备平台,振动主动控制系统工作的稳定性直接影响平台使用体验。当系统内硬件数量较多时,系统对部件可靠度敏感度较高。为了提高系统功能可靠性,保证装备平台安全,在不改变硬件的前提下,本研究从优化控制策略出发,提出了两种系统降级模式,并对其进行可靠性分析;在降级模式的基础上,基于切换系统方法,针对硬件故障数量的不同设计不同等级的降级模式;针对不同降级模式下系统控制参数,对作动器进行最优组合设计,得到在不同降级模式下系统减振控制的最优高维度模型矩阵;最后在实验室内,基于振动主动控制系统实验环境,针对作动单元降级模式进行了实验验证,通过模拟部件故障状态,验证系统降级工作策略与控制模型优选设计的正确性,提高了系统功能可靠性。
The active vibration control system is an electromechanical integrated system which can reduce the vibration level of the platform by obtaining the vibration sensor signal and driving the actuator output force.The stability of the active vibration control system directly affects the experience of using the platform which obtains harsh vibrations.The system is highly sensitive to component reliability when the system contains lots of hardware.In order to improve the functional reliability of the system without changing the hardware,this paper proposes two system degradation modes of system control strategies and analyzes their reliability.Based on the system degradation modes and switch methods,different levels of degradation modes are designed according to the different number of hardware faults.According to the system control parameters under different degradation modes,the optimal combination design of the actuator is proposed.And the optimal high-dimensional matrix of system model under different degradation modes is obtained.Finally,in the laboratory,the degradation mode of the actuator is experimentally verified in the active vibration control system test platform.By disconnecting the power supply of the actuator,the system works correctly for the vibration reduce function.
作者
梁昆
李明强
王国胜
苑博
LIANG Kun;LI Mingqiang;WANG Guosheng;YUAN Bo(China Helicopter Research and Design Institute,333000 Jingdezhen,China)
出处
《应用力学学报》
CAS
CSCD
北大核心
2023年第1期81-86,共6页
Chinese Journal of Applied Mechanics
基金
陆军装备预先研究项目(No.LZY20190501001)。
关键词
振动主动控制
降级模式
可靠性分析
实验验证
active vibration control
degradation mode
reliability analysis
experiment verification
