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An electronic speed control (ESC) is an electronic circuit that controls and regulates the speed of an electric motor. It may also provide reversing of the motor and dynamic braking . Miniature electronic speed controls are used in electrically powered radio controlled models .
The European Commission has confirmed a proposal for the mandatory introduction of ESC on all new cars and commercial vehicle models sold in the EU from 2012, with all new cars being equipped by 2014. [62] Argentina requires all new normal cars to have ESC since 1 January 2022, [63] for all new normal vehicles from January 2024. [64]
Servo and receiver connections A diagram showing typical PWM timing for a servomotor. Servo control is a method of controlling many types of RC/hobbyist servos by sending the servo a PWM (pulse-width modulation) signal, a series of repeating pulses of variable width where either the width of the pulse (most common modern hobby servos) or the duty cycle of a pulse train (less common today ...
Servos (also RC servos) are small, cheap, mass-produced servomotors or other actuators used for radio control and small-scale robotics. [citation needed] Most servos are rotary actuators although other types are available. Linear actuators are sometimes used, although it is more common to use a rotary actuator with a bellcrank and pushrod.
Radio-controlled cars, or RC cars for short, [1] are miniature vehicles (cars, vans, buses, buggies, etc.) controlled via radio. Nitro powered models use glow plug engines, small internal combustion engines fuelled by a special mixture of nitromethane , methanol , and oil (in most cases a blend of castor oil and synthetic oil ).
Radio control (often abbreviated to RC) is the use of control signals transmitted by radio to remotely operate a device. Examples of simple radio control systems are garage door openers and keyless entry systems for vehicles, in which a small handheld radio transmitter unlocks or opens doors.
A BEC-equipped ESC meant for airplane use often incorporates a low-voltage-cutoff (LVC) circuit which can sense the voltage drop caused when the battery has little charge left. It then cuts the power to the 'drive' motor in order to provide the 'steering' servo (s) with enough power to be able to bring the model safely back to the operator.
The development of an ECU involves both hardware and software required to perform the functions expected from that particular module. Automotive ECU's are being developed following the V-model. [ 1 ] Recently the trend is to dedicate a significant amount of time and effort to develop safe modules by following standards like ISO 26262 . [ 5 ]