The most popular one is the potentiometer composed

2022-07-25
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It is a potentiometer composed of a sliding rheostat, which is used to detect the rotation position of the actuator control arm

the actuator receives the control command signal from the ECU, operates the throttle electrically or pneumatically, changes the throttle opening, and enables the vehicle to accelerate, decelerate and drive at a constant speed. Actuators are usually electric and pneumatic

the electric actuator is mainly composed of a motor, a safety electromagnetic clutch and a position sensor. We look at the installation natural environment and operation method of the steel zigzag experimental machine. The motor is a DC permanent magnet motor. By changing the current direction in the motor, the rotation direction of the valve for heavy load can be changed. When the motor rotates, it can drive the actuator control arm to rotate, and the control arm changes the throttle opening through the control cable. In order to limit the rotation angle of the control arm, the motor circuit is equipped with a limit switch. A safety electromagnetic clutch is installed between the motor and the control arm. During cruise control, the safety electromagnetic clutch is engaged, and the motor rotation can change the throttle opening; If the actuator or vehicle speed sensor fails during cruise control driving, the safety electromagnetic clutch will be disengaged immediately. The electric actuator is also equipped with a position sensor, which is a potentiometer composed of a sliding rheostat, which is used to detect the rotation position of the actuator control arm and input the signal into the cruise control ECU

vacuum actuator: structural block diagram of vacuum actuator. The sealing cylinder is equipped with diaphragm, diaphragm

brake lamp switch circuit

schematic diagram of electric actuator

structure of electric actuator

vacuum actuator: the structure block diagram of vacuum actuator is shown in the figure. The sealing cylinder is equipped with a diaphragm, a diaphragm spring, two air solenoid valves and a vacuum solenoid valve. All countries of vacuum solenoid valve and air solenoid valve are accelerating the use of interconnection to upgrade traditional industries and cultivate and develop emerging industries. The grounding wires are respectively connected to the terminals of cruise control ECU. When the ECU is grounded internally, the solenoid valve works. There is a vacuum pipe connector inside the vacuum solenoid valve, which is connected to the intake manifold through a rubber pipe. A cable for pulling the throttle valve is installed in the middle of the diaphragm. The vacuum type actuator, whose combustion performance reaches gb8624a level, uses the vacuum degree of the engine intake manifold to attract the diaphragm. Through the throttle cable, the throttle opening is increased and can be kept in a fixed position. If the air solenoid valve is opened, the throttle cable is loosened and the throttle opening is reduced due to the elastic force of the diaphragm spring

vacuum actuator structure

is the structural principle of vacuum cruise control system. When the cruise control system is not working, the vacuum solenoid valve remains closed, the air solenoid valve opens, and the sealing cylinder is connected to the atmosphere. When the vehicle accelerates, the vacuum solenoid valve is opened and connected with the intake manifold, while the two air solenoid valves are closed. The vacuum in the sealing cylinder increases, the diaphragm is sucked, the spring force is overcome, and the throttle opening is increased through the cable, so the vehicle accelerates. When the vehicle accelerates to a certain speed, the vacuum solenoid valve and the air solenoid valve are closed at the same time. At this time, the vacuum in the sealing cylinder remains unchanged, and the vehicle keeps running at a constant speed. When the vehicle decelerates, the air solenoid valve returns to the open state. At this time, the air enters the sealing cylinder, the diaphragm spring presses the diaphragm back to its original position, the throttle opening decreases, and the vehicle decelerates

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