The use of Expressions is a general and powerful capability that can be used to control forces and motions. RecurDyn provides a variety of functions to define various inputs. However sometimes it is not easy for the users how to define a complicated input.
Expression Helper is the utility to generate expressions easily using Excel. User just need to input intuitive parameters, then Expression Helper generates a function expression with them. (This can be used in not only RecurDyn, but also MBD for ANSYS and NX Motion.)
If you click the link below, you can download the Signal Chart (Sequence Type) at the bottom of the [Expression Helper] Expression Preview article. (Registration and log-in of RecurDyn Technical Support site are required.)