对一混凝土泵的液压系统进行了仿真,从键合图到MATLAB方块图应该没有太大的问题。我采用的是变步长oed45法,可是仿真过程中出现了以下的警告——Warning: Unable to reduce the step size without violating minimum step size of 0.001 at time 0.1019400893518034. Continuing simulation with the step size restricted to 0.001 and using an effective relative error tolerance of 0.009782016542228928, which is greater than the specified relative error tolerance of 0.001.但是,把最大、最小、和初始步长都减小的情况下,还 ... ...