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Implementation of CC-CV in PSIMBattery charging systems are typically designed with the primary goal of maximizing battery health and lifespan. Among the most widely adopted strategies is the Constant Current–Constant Voltage (CC-CV) charging method. This article outlines the implementation of a CC-CV algorithm using a…
Introduction and Workflow Overview HyperStudy is a data analytic AI tool that is used to generate the data and then train a fit model of a power converter. PSIM is the simulation tool that is used to simulate the full fidelity power converter that will generate the data for the fit model. TwinActivate is the system…
How to Calibrate PM FlexTire™ Tire Model Inputs Required Inputs: Tire CAD: Preferably STEP, or BDF. Physical measurements (or accurate high-fidelity FEA simulation results) at the target tire air pressure: Inflated radius Vertical force-deformation Rolling resistance (Optional) Contact patch area vs. vertical load…
How to Run PM FlexTire™ This example demonstrates running PM FlexTire™ using the Clay1_6x2m.dem EDEM simulation deck with the Tractor Tire, both available from the Altair Marketplace. Steps to Set Up and Run PM FlexTire™ in EDEM Open the Example Simulation Deck Open Clay1_6x2m.dem from the PM Example Files (available from…
How to Setup Tire Motion in EDEM There are two primary options for defining flexible tire motion in Altair EDEM using PM FlexTire™: Using EDEM’s built-in kinematics, force, and torque controllers Simplest to implement and fastest to solve. Limited in functionality compared to coupled simulations. Using an MBD solver…
How to Pre-Process Tire Model: Option 2 (Manually) In some cases, STPtoOBJ.exe may not generate the required input files from a STEP file for PM FlexTire™, or you may wish to have greater control over mesh resolution for your tire model. In these situations, you can use Altair SimLab® to manually generate the necessary…
How to Pre-Process Tire Model: Option 1 (Automated) The PM FlexTire™ pre-processor (STPtoOBJ.exe) is a Python-based executable that: Converts STEP files to BDF mesh files. Converts BDF files to Wavefront OBJ files for use in EDEM. For a full list and description of available flags, refer to Appendix D of the PM FlexTire™…
How to Install PM FlexTire™ The PM FlexTire™ solver and example files are available for download on the Altair Marketplace. PM FlexTire™ is available to Altair customers through the Altair Partner Alliance. To access the solver, users must first contact their Altair sales representative to request access. Once access is…
What is Pratt & Miller (PM) FlexTire™ PM FlexTire™ enables realistic deformable tire simulation within the Altair EDEM environment. It can operate as a standalone solver inside EDEM or be co-simulated with multibody dynamics (MBD) tools such as Altair MotionView/MotionSolve. PM-FlexTire™ is a simplified finite element tire…
Introduction A monostable multivibrator, also known as a one-shot pulse generator, is a circuit that produces a single output pulse in response to an external trigger. It has one stable state and temporarily switches to an unstable state for a defined time before returning. Commonly used for timing, pulse generation, and…
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