Which statement correctly describes proportional joystick control?

Which statement correctly describes proportional joystick control?

• A. 360 degree directionality
• B. It allows user to modulate speed of device based on displacement of joystick
• C. It requires release of joystick to change direction
• D. Moves at a pre-set speed regardless of joystick displacement

Answer: (B)

Proportional joystick control means the device’s response scales with how far and in what direction you move the joystick. The farther you push from center, the faster the device goes; a tiny nudge yields slow movement, a larger push yields higher speed. This allows smooth, fine-tuned control because output mirrors input continuously rather than jumping to a set speed. That’s why the description about modulating speed based on joystick displacement is the best fit. It captures the essence: speed isn’t fixed, it changes in proportion to how far you push the control. Other statements don’t describe this behavior. If speed were constant regardless of how far you push, that wouldn’t be proportional control. If you had to release the joystick to change direction, the control wouldn’t allow continuous, variable movement. And while the joystick may work in any direction (360 degrees), the defining feature of proportional control is the proportional speed response, not just the range of movement.

Proportional joystick control means the device’s response scales with how far and in what direction you move the joystick. The farther you push from center, the faster the device goes; a tiny nudge yields slow movement, a larger push yields higher speed. This allows smooth, fine-tuned control because output mirrors input continuously rather than jumping to a set speed.

That’s why the description about modulating speed based on joystick displacement is the best fit. It captures the essence: speed isn’t fixed, it changes in proportion to how far you push the control.

Other statements don’t describe this behavior. If speed were constant regardless of how far you push, that wouldn’t be proportional control. If you had to release the joystick to change direction, the control wouldn’t allow continuous, variable movement. And while the joystick may work in any direction (360 degrees), the defining feature of proportional control is the proportional speed response, not just the range of movement.