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现代工业的发展对机器的整机性能提出了越来越高的要求。为了确保准确的工艺动作,机器各运动部件之间必须保持严格的相对位置和速度关系;为了减小机构的动态变形与机械振动,降低噪音,对机器的加速度也有很高的要求。所以,各类机床、动力机械、织造机械及各种机械装置在设计、调试、鉴定及维修过程中,往往需要测试作往复直线运动构件的位移、速度、加速度,以及旋转构件（或摆动构件）的角位移、角速度、角加速度、转速和回转不匀率,从而进一步分析机器的动力特性。为此,“机械原理”课程教学实验的基本要求中明确提出:“要使学生能对简单机械进行运动和动力参数的测试,以培养学生运用实验方
The development of modern industry has put forward higher and higher requirements on the overall performance of the machine. In order to ensure accurate process movement, the machine must maintain a strict relationship between the various moving parts relative speed and position; in order to reduce the dynamic deformation and mechanical vibration, reduce noise, the acceleration of the machine also have high requirements. Therefore, all kinds of machine tools, power machinery, weaving machinery and various mechanical devices in the design, commissioning, identification and maintenance process, often need to test the reciprocating linear motion of components of displacement, speed, acceleration, and rotating components (or swinging components) The angular displacement, the angular velocity, the angular acceleration, the rotational speed and the rotational unevenness, so as to further analyze the dynamic characteristics of the machine. To this end, “Mechanical Principle” teaching experiment basic requirements clearly put forward: "To enable students to simple mechanical movement and dynamic parameters of the test to train students to use experimental side