ISO 25197:2020 小型航空機—ステアリング、シフト、スロットル用の電気/電子制御システム | ページ 5

3.1

electrical steering system

electronic steering system

all components, including CPU (central processing unit) and cable harnesses, from the manual steering input device (3.11) up to and including the device [ actuator (3.22) or electrical motor] regulating the rudder or propulsion unit steering angle

Note 1 to entry: It includes the joystick (3.15) and components, i.e. GPS antennas for dynamic positioning, if installed.

3.2

dynamic-positioning system

computer-controlled system to automatically maintain a craft's position and heading by using the craft’s own propulsion systems with or without the assistance of bow or stern thrusters

3.3

electrical shift and throttle system

electronic shift and throttle system

all components, including CPU (central processing unit) and cable harnesses, from the shift and throttle input device (3.11) up to and including the device controlling the shift and speed of engines

3.4

ignition-protected equipment

electrical equipment designed and tested for use in explosive atmospheres without igniting surrounding flammable gases

3.5

nominal voltage

commonly used voltage, such as 12 V, 24 V, or 36 V DC

3.6

manoeuvring mode

reduced power mode for manoeuvring, determined by the manufacturer of the steering/control systems

3.7

cruising mode

power mode above manoeuvring mode (3.6) up to full power, determined by the manufacturer

3.8

X axis

direction of a craft fore or aft, longitudinally

3.9

Y axis

direction of a craft port or starboard, transversely

3.10

Z axis

axis perpendicular to the X‑Y plane

3.11

input device

device that transmits commands to a system

3.12

output device

device that operates from commands coming from an input device(s) (3.11)

3.13

control head

operator input device (3.11) , other than a steering wheel, for the simultaneous control of steering and propulsion (3.20)

3.14

control lever

operator input device (3.11) for the control of thrust (3.23) and/or propulsion (3.20)

3.15

joystick

operator input device (3.11) for the simultaneous control of thrust (3.23) , steering and propulsion (3.20)

3.16

helm station

location from which steering, propulsion (3.20) and thrust (3.23) can be controlled

3.17

multiple helm stations

more than one location in the boat from which steering, propulsion (3.20) and thrust (3.23) can be controlled

3.18

command station

helm station (3.16) location that is in active control

3.19

portable helm

helm providing a combination of shift or throttle or steering, not permanently affixed to the craft’s structure, communicating with the system through wired or wireless (3.24) means

3.20

propulsion

component or components of thrust (3.23) that permit a craft’s movement in any direction

Note 1 to entry: Examples of propulsion-generating devices include outboards, stern drives, pod drives, jet drives, inboards and thrusters.

3.21

radio-frequency

RF

frequency within the range of frequencies suitable for utilization in radio communication

3.22

actuator

electromechanical, electropneumatic and/or electrohydraulic device that converts an electrical signal into a mechanical displacement

3.23

thrust

propulsive force from craft’s propulsion system, including bow or stern thrusters or a combination thereof in order to move or rotate the craft

3.24

wireless

mode of communication, monitoring and/or control through the use of electromagnetic, acoustic or optical transmission through atmospheric space

3.25

damp area

area where moisture is either permanently or intermittently present

3.26

wet area

area exposed to weather

3.27

interior

protected area inside the craft

3.28

immersion

area totally or partially under water

3.29

EUT

equipment under test

representative system, or part of it, used on tests

3.30

performance criterion

standard by which the functional status of an EUT (3.29) during and after testing is judged

3.31

failure modes and effects analysis

FMEA

procedure in product development and operations development for analysis of potential failure modes

3.32

fail-safe mode

device or feature which, in the event of failure, responds in a way that causes no harm, or minimizes the harm, to other devices, and causes no danger, or minimizes the danger, to personnel

3.33

trolling motor

electric propulsion unit that produces less than 500 N thrust (3.23) , that includes an electric motor, propeller and controls

3.34

autopilot system

system used to control the craft without constant hands on control by a human operator