一种由指数函数构造的软信号发生器及其应用

Soft Signal - generator Created by the Exponential Functions and its Application

提出一种由指数函数构造的“软”信号发生器,通过改变由指数函数构造的复合函数的阻尼比,可得到斜坡、阶跃、脉冲和函数等各种不同波形的信号。介绍这种信号发生器的零声、和幅值调节万法,分析该复合函数的不同线段之间的连续性。用这些信号作为输入信号来做电流变实验,研究电流变传动机构的动态性能。实验表明,这种软信号发生器效果良好且方便,具有实际应用的意义。

A soft signal - generator is presented which is created by the exponential functions. Different waveform signals such as ramp function, step function, pulse function and exponential function are available by changing the damping ratio of the compound function created by the exponential functions. The methods of adjusting this signal - generator's zero point and amplitude are introduced. The continuity between different line segments of the compound function is also analysed. The electrorheological experiment is carried out using these signals as inputs. So the dynamic nature of the electrorhe-ological actuator can be studied. It shows experimentally that the soft signal- generator is convenient and effective. The soft signal - generator can be put into practical applications.