Test rover apparatus

1. A test rover apparatus comprising:

a chassis with a sidewall extending between a base and a top to define a cavity, the chassis being configured to support an object representing a mobile actor;

at least one wheel;

a motor coupled to the at least one wheel;

at least one spring coupled between the at least one wheel and the chassis, the at least one spring being configured to:

bias the at least one wheel to extend out of the cavity to engage an underlying surface, and

compress in response to a load being applied to the top of the chassis thereby retracting the at least one wheel into the cavity such that the base of the chassis contacts the underlying surface; and

a controller configured to control the motor to drive the at least one wheel to propel the chassis along a predetermined route, wherein the predetermined route is based on simulation data and corresponds to a maneuver of the mobile actor, and wherein the simulation data comprises a simulated environment and a model of the mobile actor performing the maneuver within the simulated environment.

2. The test rover apparatus of claim 1 , wherein the at least one wheel comprises a rear wheel, the test rover apparatus further comprising:

a frame mounted to the chassis; and

a bracket pivotally connected to the frame about a first axis, wherein the motor is coupled to the rear wheel and supported by the bracket.

3. The test rover apparatus of claim 2 further comprising:

a collar fixed to the frame; and

a post with a proximal end pivotally connected to the bracket and a distal end extending through the collar;

wherein the at least one spring comprises a rear spring disposed on the post between the proximal end and the collar, the rear spring being configured to bias the bracket downward thereby extending the rear wheel out of the cavity to engage the underlying surface.

4. The test rover apparatus of claim 1 , wherein the at least one wheel comprises a front wheel, the test rover apparatus further comprising:

a knuckle coupled to the front wheel;

a pivot shaft supported by the knuckle;

a linkage comprising a central region pivotally connected to the pivot shaft, a distal end connected to the front wheel, and a proximal end;

a post extending from the knuckle;

a seat formed at an end of the post; and

a coupling mounted for translation along the post and connected to the distal end of the linkage;

wherein the at least one spring comprises a front spring disposed on the post between the coupling and the seat, the front spring being configured to bias the coupling toward the knuckle thereby extending the front wheel out of the cavity to engage the underlying surface.

5. The test rover apparatus of claim 4 , wherein the knuckle further comprises a pair of knuckles, each knuckle being mounted for rotation about a vertical axis, and wherein the at least one wheel comprises a pair of front wheels, the test rover apparatus further comprising:

a tie rod connected between the pair of knuckles; and

a steering actuator with an output crank coupled to the tie rod by a rocker-slider mechanism such that pivotal motion of the output crank translates the tie rod thereby pivoting the pair of front wheels about the vertical axes.

6. The test rover apparatus of claim 1 , wherein the controller is further configured to control the motor to initiate propulsion of the chassis along the predetermined route in response to receipt of a trigger signal and wherein the trigger signal is transmitted in response to a test vehicle being located at a predetermined waypoint.

7. The test rover apparatus of claim 1 , wherein the controller is further configured to:

capture test data during propulsion of the chassis along the predetermined route; and

transmit the test data.

8. The test rover apparatus of claim 7 , wherein the controller is further configured to:

control the motor to propel the chassis to a waypoint indicative of a location of a base station; and

transmit the test data to the base station.

9. A test system comprising:

a computer configured to generate a predetermined route based on simulation data, the predetermined route being indicative of a maneuver of a mobile actor, wherein the simulation data comprises a simulated environment and a model of the mobile actor performing the maneuver within the simulated environment;

a test rover apparatus comprising:

a chassis configured to support an object representing the mobile actor,

a motor supported by the chassis and coupled to at least one wheel, and

a controller configured to control the motor to propel the test rover apparatus along the predetermined route; and

a vehicle system comprising at least one optical sensor configured to detect the object representing the mobile actor external to a test vehicle.

10. The test system of claim 9 , wherein the vehicle system further comprises a processor configured to adjust at least one of a vehicle speed and a steering angle of the test vehicle in response to detection of the object representing the mobile actor.

11. The test system of claim 9 , wherein the computer is further configured to transmit a trigger signal in response to a location of the test vehicle corresponding to a predetermined waypoint location; and

wherein the controller is further configured to control the motor to initiate propulsion of the test rover apparatus along the predetermined route in response to receipt of the trigger signal.

12. The test system of claim 9 further comprising a base station in communication with the computer and the controller, wherein the base station is configured to provide the predetermined route to the controller.

13. The test system of claim 12 , wherein the controller is further configured to:

capture test data while the test rover apparatus traverses the predetermined route;

control the motor to propel the test rover apparatus to a waypoint indicative of a location of the base station; and

transmit the test data to the base station.

14. The test system of claim 13 , wherein the base station is configured to upload the test data to a server.

15. The test system of claim 12 , wherein the computer is further configured to generate a second predetermined route of a second mobile actor based on the simulation data, the test system further comprising:

a second test rover apparatus in communication with the base station and configured to:

support a second object representing the second mobile actor, and

control at least one second motor to propel the second test rover apparatus along the second predetermined route.

16. The test system of claim 9 , wherein the test rover apparatus further comprises:

at least one spring coupled between the at least one wheel and the chassis, the at least one spring being configured to:

bias the at least one wheel to extend out of a cavity defined by the chassis to engage an underlying surface; and

compress in response to a load being applied to a top of the chassis thereby retracting the at least one wheel into the cavity such that a base of the chassis contacts the underlying surface.

17. A method for testing a vehicle system using a test rover apparatus comprising:

generating, by one or more processors, a predetermined route based on simulation data, wherein the predetermined route is indicative of a maneuver of a mobile actor relative to a test vehicle, and wherein the simulation data comprises a simulated environment and a model of the mobile actor performing the maneuver within the simulated environment;

controlling, by the one or more processors, at least one motor to propel a test rover apparatus along the predetermined route, wherein the test rover apparatus is configured to support an object representing the mobile actor; and

detecting, by the one or more processors, the object representing the mobile actor external to a test vehicle.

18. The method of claim 17 further comprising capturing test data while the test rover apparatus traverses the predetermined route.

19. The method of claim 18 further comprising uploading the test data to a server.

20. The method of claim 18 further comprising generating simulation data based on the test data.