WebState derivatives returned by S-function 'chap1_3plant' in 'testPID2/S-Function1' during flag=1 call must be a real vector of length 2. 修改改为x0 = [0.01, 0.01];程序就不再报错了。. function [sys, x0, str, ts] = chap1_3plant (t,x,u,flag) switch flag case 0 [sys, x0, str, ts] = mdlInitializeSizes; case 1 sys = mdlDerivatives (t,x,u ... WebNov 5, 2024 · By adding assert (all (imag (u)==0), 'u is imaginary or nan'); before sys (1)= (-x (2)+Vin*u (1))/L; sys (2)=x (1)/C-x (2)/C/R;, but the problem remains the same. The …
Matlab S-Function "flag=3 call must be a real vector of length 2"
WebSep 17, 2016 · So I'm trying to use a delay block to avoid the algebraic loop. Here comes a new error saying "State derivatives returned by S-function 'UAV_dynamics' in 'feedbacklinearization_test2/dynamics' during flag=1 call must be a real vector of length 14" . I have no idea how to solve this problem. WebS-function 'XX' in 'XXX' during flag=1 call must be a real vector of length 6" .who can tell me which kind of mistake possiblely i made? im I would examine your S-function and … fog fall collection
s函数提示flag=3 call must be a real vector of length 1？ - 知乎
WebJan 1, 2024 · While running the Simulink file I am facing an error : Output returned by S-function 'chap5_2plant_elgerd' in 'chap5_2sim_elgerd/S-Function1' during flag=3 call must be a real vector of length 7 hereby I have attached the m-file of the controller and the plant controller m-file function [sys,x0,str,ts] = spacemodel (t,x,u,flag) switch flag, WebMar 2, 2024 · One potential risk would be if the input u were purely imaginary. Your third output uses u_1^2 which under that hypothesis would become real-valued. Your other … WebFeb 7, 2024 · 一、问题描述 在用s-function编写状态方程，然后用于simulink仿真时，经常会出现如下错误： flag=1 call must be a real vector of length 4. 二、出错原因 1. 一般是因为你的计算中出现了“除0”，你看一看状态方程中，分母中的参数在运行了50多秒后哪个会变成0，导致错误出现。 2. 还有一种情况是根号中的值为负数，或log（-1），我把它归结于 … fogfathers.co.uk