悬挂农具作业动力学参数田间实时测试系统

Field Real-time Testing System for Measuring Work Dynamic Parameters of Suspension Agricultural Implement

为了满足农业机械研制过程中对多个动力学参数实时测试的需要,在分析其他测试装置及原理的基础上,将三销求和电路及测力销装置与农机通用的三点悬挂机构有机结合,研制出三点悬挂式测力装置。以LabVIEW为开发平台,针对所选传感器的特点,开发出大功率(150 kW以上)农机具动力学参数田间测试系统,实现农机具的位移、动力输出轴转速和扭矩、输出功率、打滑率、水平牵引力以及油耗等参数的实时测试,研制出CTM-5000型悬挂农机具田间综合测试系统,分析了系统误差产生的根源,并找出消除误差的措施。以拖拉机前、后配套农机具为试验对象进行了田间试验,在室内与现有类似测试系统进行了比较验证,试验运行和验证结果表明本系统测量数据可靠,操作方便,体现出其设计的合理性和优越性。

In order to meet the development of agricultural machinery and the need for real-time testing of multiple dynamic parameters, three-points hanging type measuring force device was developed on the basis of principles of relative test devices, combined with three-pin summing circuit and measuring force pin with universal three-points hanging mechanism on agricultural machinery. According to the characteristics of selected sensors, and on the LabVIEW developing platform, a field test system on dynamic parameters for high-power suspension agricultural implement was developed. Suspension implements of displacement, power output axis speed and torque, output power, level traction, fuel consumption and other parameters were tested. Type CTM developed. The source of systematic errors was analyzed. The the front and rear of tractor supporting farm implements for a similar test system, results showed that the measurement data system showed feasibility and advantages of this new design. 5000 comprehensive field test system was way of avoiding the errors was found. With test object and comparing with the existing were reliable and easy to be operated. The