摘要
质心测量系统用于大型重载车辆的质量及质心位置的测量,具有俯仰和横滚两个运动自由度。系统采用三点支撑加双缸驱动方案,驱动系统采用液压伺服控制,保证了平台运动的平稳性与准确度。建立了非对称阀控非对称缸的动力机构数学模型以及系统仿真模型。分析了采用动压反馈校正前后单通道控制系统的闭环频率特性和响应特性,仿真结果验证了动压反馈校正是有效的。
Gravity center position measurement system can be used in weight and gravity center measuring for large heavy vehicles. The platform is based on three measuring points and two hydraulic actuators, the actuators is driven with electro-hydraulic servo control method which ensures the platform movement stability and the accuracy. The mathematical model of asymmetrical valve controlling the asymmetrical cylinder and the system simulation model were set up. Closed loop frequency characteristic and step response of dynamic pressure feedback were contrasted with uncorrected system.
出处
《机床与液压》
北大核心
2008年第6期51-53,138,共4页
Machine Tool & Hydraulics
基金
黑龙江省教育厅资助项目(项目编号11511068)
关键词
质心测量
电液伺服
动压反馈
Center of gravity measurement
Electro-hydraulic servo
Dynamic pressure feedback
