Popularly speaking, it is an aircraft with four independent power rotors. The four-axis aircraft is one of the multi-axis aircraft. The common multi-axis aircraft has two axes, three axes, four axes, six axes and eight axes.
Why can the four axes fly? Without wings, elevators, rudders, how does he control the lift/direction?
The main flight movements of the aircraft include vertical (lifting) motion, pitching motion, forward and backward motion, rolling motion, lateral motion, and yaw motion:
The vertical (lifting) movement is best understood, that is, throttle control, the throttle is raised, the throttle is lowered, and all lift is from the rotor.
The tilting motion is realized by pushing and pulling the elevator in the fixed wing, and the four axes are realized by controlling the motor speed on two (or four) axes, as shown in the following figure: No. 1 motor speed, No. 3 motor Slow down, four-axis extension X-axis direction up. Moreover, while the pitching motion is being performed, the four axes are also moved forward and backward, and the four axes are tilted to a certain extent, so that the rotor pulling force generates a horizontal component, so that the forward flying motion of the aircraft can be realized. Flying backwards is just the opposite of flying forward.
The roll motion is realized by controlling the aileron in the fixed wing, and the four axes are also realized by controlling the motor speed on two (or four) axes, and the same as the pitch control mode, only the motor Different, as shown in the following figure: The No. 4 motor speeds up, the No. 2 motor speeds down, and the four-axis extends Y-axis direction. Moreover, a small amount of roll motion will cause the four axes to make lateral movements.
The yaw movement is achieved by controlling the rudder in the fixed wing and the anti-torque by the four axes. During the rotation of the rotor, due to the air resistance, an anti-torque force opposite to the direction of rotation is formed. In order to overcome the influence of the anti-torque force, the four rotors, two forward rotations, two reverse rotations, and the rotation directions of the four rotors on the diagonal line The same; the magnitude of the anti-torque is related to the rotor speed. When the four motors rotate at the same speed, the counter-torques generated by the four rotors balance each other, and the quadrotor does not rotate. When the four motor speeds are not identical, the unbalanced counter Torque will cause the four-rotor aircraft to rotate horizontally, thus achieving yaw motion. As shown in the following figure: The motor speed of No.1 and No.3 is increased, the motor speed of No.2 and No.4 is reduced, and the four axes are rotated horizontally due to the overall lift. Change, so it does not cause four-axis rise/fall.
Depending on the location of the motor distribution, the common types of quadcopters are as follows:
1, four-axis "ten" mode, four motors are distributed in a cross, the direction of the head is the direction of the M4 motor; (M stands for the motor, the arrow represents the direction of motor rotation)
2. Four-axis "X" mode, four motors are X-shaped, and the head direction is the middle point of M4 and M2;
3. Four-axis "Y" mode, M1 and M3 motors are mounted on the same center axis, and the head direction is the middle point of M4 and M2.
In addition to some of the above four-axis types, there are also variable shaft designs. By adding a servo servo to adjust the axis of the motor, the four-axis is more flexible and can make more 3D movements, but the difficulty of installation and debugging. Larger, this article does not introduce, interested children's shoes can go to search.
How to quadrupole1. After the switch of the aircraft and the remote control are turned on,
2, look at the instructions
3, there are remote control and aircraft's frequency operation gesture
Dc gear motor, namely gear reduction motor, is based on ordinary Dc Motor, coupled with gear reduction gearbox.
The gear reducer is used to provide low speed and large torque.
At the same time, the gearbox with different deceleration ratio can provide different speed and torque.
Generally different industries, using different power dc motor, generally adopt custom parameter design pattern.
What are the four ratings of the Dc Gear Motor? The DC gear motor is often seen in our industrial production. Here Shunchang Motor gives you the knowledge of its four ratings. To talk about
1. Rated Current: The rated current is the maximum current allowed to flow through the armature winding of the DC deceleration motor in accordance with the specified operating mode, in A.
2. Rated Voltage: The rated voltage is the maximum additional voltage that the armature winding of the motor can work safely, unit V. It
3. Rated Speed: Rated speed refers to the rotational speed of the Gear Reducer Motor in the rated voltage, rated current and output rated power under the circumstances of operation, the unit is r/min. Such
4, rated power: rated power refers to the motor in accordance with the specified mode of operation can provide output power. For motor, rated power is the output of mechanical power on the shaft.
precision instruments and meters,automobile industry, medical equipment, consumer electronics, household appliances, electric glass doors and Windows,etc., wide application range
Features: gear motor drive precision, small volume, large torque, low noise, durability, low energy consumption, customized power design,easy installation, easy maintenance;Simplify design and save space.
Method of use: the best stable in horizontal plane, installed on the dc gear motor output shaft parts, cannot use a hammer to knock,knock prone to press into the dc gear motor drive, may cause damage to internal components, and cannot be used in the case of blocked.
Operating temperature range:
Geared motors should be used at a temperature of -10~60℃.
The figures stated in the catalog specifications are based on use at ordinary room temperature catalog specifications re based on use at ordinary room temperature (approximately20~25℃.
If a geared motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.
Storage temperature range:
Geared motors should be stored ta a temperature of -15~65℃.
In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.
Service life:
The longevity of geared motors is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.â—Use with a load that exceeds the rated torque
â—Frequent starting
â—Momentary reversals of turning direction
â—Impact loads
â—Long-term continuous operation
â—Forced turning using the output shaft
â—Use in which the permitted overhang load or the permitted thrust load is exceeded
â—A pulse drive ,e.g.,a short break,counter electromotive force,PWM control
â—Use of a voltage that is nonstandard as regards the rated voltage
â—Use outside the prescribed temperature or relative-humidity range,or in a special environment.
â—Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.
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