riderless

adj.

没人骑的，无主的（马）；

1. The horse came back riderless.
   那匹马无人骑而自己回来。

Riderless vehicle steering control apparatus
Riderless stabilization of a balancing transporter
Stabilization of a Riderless Bicycle [Applications of Control]
DAE Control of Dynamical Systems: Example of a Riderless Bicycle
Modelling and control of the motion of a riderless bicycle rolling on a moving plane
Maneuver-Based Obstacle-Avoiding Trajectory Optimization: Example of a Riderless Bicycle
The derivation of a kinematic model from the dynamic model of the motion of a riderless bicycle
The derivation of a kinematic model from the dynamic model of the motion of a riderless bicycle
DAE control of dynamical systems : example of a riderless bicycle = une approche algébro-différentielle numérique de la commande ...
Erratum to: "Navigation and control of the motion of a riderless bicycle by using a simplified dynamic model'' [Math. Comput. Modell...