Simone, I cannot reproduce this.
* How do you specify the motor angle function? * What do you mean by the angular acceleration being “significantly different” from 0? --Radu From: [email protected] <[email protected]> On Behalf Of Simone Sent: Monday, January 5, 2026 3:55 PM To: ProjectChrono <[email protected]> Subject: [chrono] ChLinkMotorRotationAngle::GetMotorAngleDt2() -> wrong acceleration Hi, I have a vary basic system consisting of a rotating body, controlled by an infinite stiffness servo, thus being represented by a ChLinkMotorRotationAngle. Even though I am prescribing a constant angular speed, GetMotorAngleDt2() is returning values significantly different than 0. This is happening for various time steppers (HHT, ...) and linear solvers, except for EULER_IMPLICIT time stepper. I also tried changing the tolerances and time steps with no satisfactory results. Is this a known issue, or am I doing or interpreting something wrong? Thank you in advance, and best regards, Simone -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To view this discussion visit https://groups.google.com/d/msgid/projectchrono/65ed1c85-625f-4338-86c0-fa6525e9d590n%40googlegroups.com<https://urldefense.com/v3/__https:/groups.google.com/d/msgid/projectchrono/65ed1c85-625f-4338-86c0-fa6525e9d590n*40googlegroups.com?utm_medium=email&utm_source=footer__;JQ!!Mak6IKo!MXB5146m7smr9Bbv6odg1lU0pB_S58FhIVCabblRVBylnV1BJXlxSl0z59e_fGFODejHmFyUBCLUdgnKf1-hDMu65YI$>. -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/projectchrono/CH3PPF46CDC2185B87D3E3CC8E925426252A798A%40CH3PPF46CDC2185.namprd06.prod.outlook.com.
