Different Kinds of Electronic Throttle Control System
(1) Electro-hydraulic throttle
Electro-hydraulic throttle is mostly used in construction machinery with hydraulic system. It has the characteristics of simple structure, low cost, large driving force and low power consumption. Its electro-hydraulic control conversion is mainly realized by high-speed on-off digital valve, which has high control precision and has no too high requirement for hydraulic oil.
(2) Linear solenoid throttle
The electromagnet throttle uses proportional electromagnet as its controller. It uses electromagnetic force as driving force, and the control signal is the current signal. It has simple structure, small size, convenient control, fast response and good steady-state accuracy.
(3) Stepping motor throttle
Stepping motor throttle directly drives throttle shaft through stepping motor to realize throttle opening control. The bridge circuit structure is usually used to drive the stepping motor. The control unit controls the stepping motor by controlling the number of pulses, frequency and direction.
(4) DC servo motor throttle
DC servo motor adopts pulse width modulation (PWM) technology, which is characterized by high frequency, high efficiency, high power density and high reliability. The control unit controls the angle of the DC motor by adjusting the duty cycle of the pulse width modulation signal.
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