设计了一套复合曲柄滑块结构，以大曲柄连杆机构产生的往复直线运动频率为基波，以小曲柄连杆机构变频产生的往复直线运动频率为二次谐波，即可叠加产生同时包含位移、速度、加速度的运动信号，从而实现对位移、速度、加速度同时进行多参数校准。从运动学和动力学分析的角度研究曲柄和连杆，连杆和滑块的相对运动即位移、速度和加速度随着时间的变化规律，曲柄连杆机构惯性力及滑块作用力规律，建立了运动装置曲柄连杆机构动力学和运动学模型，通过曲柄连杆机构运动受力理论分析系统运动规律，从动力学角度分析曲柄连杆机构的运动和质量分布，计算了往复惯性力和旋转惯性力，实际测试结果表明速度、加速度的测量误差小于1％。%A double slider-crank mechanism was developed to calibrate the motorial parameters testing equipment. The signal of reciprocating linear motion from one slider-crank mechanism developed was taken as the fundamental frequency,and the signal of reciprocating linear motion from other slider-crank mechanism developed was taken as the second harmonic frequency.The two signals were superimposed to produce displacement,velocity and acceleration signals,so as to realize the simultaneous calibration of displacement,velocity,acceleration and multiple parameters.The relative motions between crank and connecting rod as well as between connecting rod and slider,i.e.,the variations with time of the relative displacements,velocities and accelerations were studied from the view point of kinematics and dynamics.The inertia forces in the mechanism and the forces acted by sliders were investigated.Then a dynamics and kinematics model of the double slider-crank mechanism was set up.Its motion and mass distribution were analysed and the reciprocating inertial force and rotational inertia force were calculated.Measurement results indicate that the errors of velocity and acceleration are within 1%.
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