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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 .
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 ...
RC servos are usually powered by the receiver, which in turn is powered by battery packs or an electronic speed controller (ESC) with an integrated or a separate battery eliminator circuit (BEC). Common battery packs are either NiCd, NiMH or lithium-ion polymer battery (LiPo) type. Voltage ratings vary, but most receivers are operated at 5 V or ...
A Plug-N-Play (PNP) electric RC airplane has the motor, ESC and servos installed but is missing the transmitter, receiver, and motor battery pack (& charger). In other words, the airplane comes 99% assembled just like an RTF one does, but you need to supply your own transmitter, receiver, and battery pack.
- 1955 Ford Motor Company RC Model Car - Automobile manufacturer studios used scale models to reduce new design development lead times and save money. Among Ford designs executed in 3/8 size were the LaTosca, a futuristic bubble-top dream car, and the Mexico, an aerodynamic reskin of the 1955 Thunderbird that was designed to top 200 mph.
Brushless motor systems; Brushless-specific batteries and dischargers; Novak Electronics had a 35,000 square foot (or 3252 square meter) robotic manufacturing facility with a team of engineers and RC racers. This facility made it one of the few American electronics manufacturers to design, build, and test its products onsite.
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.
In vector control, an AC induction or synchronous motor is controlled under all operating conditions like a separately excited DC motor. [21] That is, the AC motor behaves like a DC motor in which the field flux linkage and armature flux linkage created by the respective field and armature (or torque component) currents are orthogonally aligned such that, when torque is controlled, the field ...