The problem was immediately obvious - the ground wire to the nonfunctional motor had been severed. Looking at a few other wires, it looks like they commonly get pinched in the enclosure during assembly. After repeated run-ins with objects, the wire was eventually sheared. Note the broken blue...
Control systems can be subject to outside inputs, environmental effects, disturbances, and sensor/actuator inaccuracy. To model such systems, linear differential equations with constrained inputs are often used,x˙(t)=Ax(t)+Bu(t), where the input vectoru(t) stays in some bound. Simulating t...