CN112865420A - Potential control steering engine - Google Patents

Abstract

A potential control steering engine is characterized in that a gear reduction box at the front end of a direct current motor is provided with a potentiometer main body, a power output shaft of the gear reduction box is provided with a potential sliding end, and the potential sliding end is in continuous contact with a C-shaped resistance sheet on the potentiometer main body; the invention has the advantages that the resistance change of the resistance potentiometer during rotation is adopted to control the common direct current speed reducing motor, the structure of the steering engine can be greatly simplified, the torque of the steering engine is improved, the phenomenon of 'shaking' caused by unstable voltage of the traditional steering engine is fundamentally solved, and the device has a simple structure, low implementation cost and great application potential.

Description

Potential control steering engine

Technical Field

The invention relates to a potential control steering engine, which adopts the resistance change of a resistance-type potentiometer during rotation to control a common direct current speed reduction motor, realizes the control of the rotation direction and the rotation angle of a steering engine working arm, can greatly simplify the structure of the steering engine, improve the torque of the steering engine and fundamentally solve the phenomenon of 'shaking' of the traditional steering engine caused by unstable voltage. The invention relates to the technical fields of electronic technology, singlechip technology, program design, mechanical design and the like.

Background

The steering engine is widely applied to the control field of model airplane control, robot motion and other remote control models. The traditional steering engine generally adopts PWM (pulse-width modulation) waves to control the rotation angle. The steering engine hardware part circuit is comparatively complicated, and has higher requirement to supply voltage's stability. The phenomenon of violent 'shaking' can occur when the voltage is slightly unstable in the working process. In addition, because the steering engine has a complex internal structure, the internal circuit module partially occupies a large space, and the total volume of the steering engine cannot be too large, the power of a motor adopted in the steering engine is small, so that the torque after speed change cannot be too large.

Disclosure of Invention

In order to overcome the defects of the traditional steering engine, the resistance change of the resistance-type potentiometer during rotation is adopted to control the common direct-current speed reduction motor, so that the control of the rotation direction and the rotation angle of the working arm of the steering engine is realized. The structure of the steering engine can be greatly simplified, the torque of the steering engine is improved, and the phenomenon of shaking caused by unstable voltage of the traditional steering engine is fundamentally solved.

The technical scheme of the invention is as follows: a potential control steering engine is characterized in that a potentiometer main body (3) is assembled on a gear reduction box (4) at the front end of a direct current motor (5), a potential sliding end (2) is assembled on a power output shaft of the gear reduction box (4), and the potential sliding end (2) is continuously contacted with a C-shaped resistance sheet (3-1) on the potentiometer main body (3); preferably, a connecting terminal A (3-2) and a connecting terminal C (3-4) are respectively designed at two ends of the C-shaped resistance sheet (3-1), and the potential sliding end (2) is simultaneously in close contact with the other end of the connecting terminal B (3-3).

The invention has the advantages that the resistance change of the resistance-type potentiometer during rotation is adopted to control the common direct-current speed reduction motor, the structure of the steering engine can be greatly simplified, the torque of the steering engine is improved, the phenomenon of 'shaking' caused by unstable voltage of the traditional steering engine is fundamentally solved, and the device has simple structure, low implementation cost and great application potential.

Drawings

The invention is further illustrated with reference to the figures and examples.

FIG. 1 is a first view of a potential control steering engine

FIG. 2 is a second view of the potential-controlled steering engine

FIG. 3 explosion diagram of potential control steering engine

FIG. 4 shows a structure of a potentiometer

FIG. 5 is an exemplary diagram of a connecting circuit of a potential control steering engine and a single chip microcomputer

In the figure 3, 1 is a steering engine working arm, 2 is a potential sliding end, 3 is a potentiometer main body, 4 is a gear reduction box, and 5 is a direct current motor; type 3-1.C resistance card in figure 4, 3-2. connecting terminal A, 3-3. connecting terminal B, 3-4. connecting terminal C.

Detailed Description

Hardware and circuitry: first, the present invention is assembled as shown in fig. 3, and then a circuit is connected as shown in fig. 5, wherein terminals a (3-2) and C (3-4) are connected to GND and 5V of the single chip, respectively, terminal B (3-3) is connected to a voltage detection pin (in the example, pin a7, here, an Arduino Nano single chip is taken as an example), wherein a motor driving chip L293D is further used, which can drive two motors at the same time, in this example, only one motor needs to be driven, so that part of the chip pins are not used.

Software and program: the software uses an Arduino IDE development environment. The program code (example) is as follows:

int z=930；

int f=100；

int n=0;

int m=0;

void setup() {

pinMode (A7, INPUT);/Pin corresponding Pin

pinMode (4, OUTPUT);/Motor control pin A

pinMode (5, OUTPUT);/Motor control pin B

pinMode (6, OUTPUT);/Enable pin

}

void loop() {

do{

digitalWrite(4,LOW);

digitalWrite(5,HIGH);

analogWrite(6,150);

n = analog read (A7);/the voltage value of the read Pin Pin and assigned to n

}while(n<z);

do{

digitalWrite(4,HIGH);

digitalWrite(5,LOW);

analogWrite(6,150);

m = analog read (A7);/read the voltage value at pin A7 and assign to m

}while(m>f);

}

The working principle of the device is as follows: in the example, the terminal B (3-3) is connected with the pin A7 of Arduino Nano, the pin is in a voltage input mode, and the pin A7 continuously reads the voltage value of the position of the potential sliding end (2), converts the voltage value into a value between 0 and 1023 and then assigns the value to the variable n. Forward and reverse rotation are implemented in the loop using do … … while statements. In the example, when n is less than 930, pin No. 4 corresponding to motor control pin a is at a low voltage, and pin No. 5 corresponding to motor control pin B is at a high voltage, at this time, the motor rotates forward, the voltage value of pin a7 continuously increases, and the value of n also continuously increases; when n is greater than or equal to 930, the statement jumps out of the first do … … while loop and enters into the following do … … while loop, at this time, the value read by pin a7 is assigned to another new variable m again, and pin 4 corresponding to pin a is at a high voltage, and pin 5 corresponding to pin B is at a low voltage, so that the motor is reversed. During the reverse rotation, the value of m is continuously reduced from 930 at the end of the last do … … while cycle, when the value of m is less than or equal to 100, the program jumps out of the do … … while cycle, because the value corresponding to pin A7 is less than or equal to 100, the value is necessarily less than 930, so the above do … … while cycle condition is satisfied, the program re-enters the above do … … while cycle, the motor starts to rotate forward again, and the process repeats. The above example procedure implements forward and reverse rotation of the present device, and the angular magnitudes of forward and reverse rotation can be achieved by controlling the values of z and f, respectively. Therefore, the program-controlled steering engine has the same functions as the conventional steering engine controlled by the PWM wave. The fluctuation of the voltage between the connection terminal A (3-2) and the connection terminal C (3-4) only influences the maximum rotation angle of the device, and the maximum angle value is not used in the common control occasions. The problem of steering engine shake, which is fatal to the traditional steering engine, is thoroughly solved. In addition, the device has a simple structure, is more compact than the traditional steering engine in volume, and can use a motor with higher power so as to generate larger torque under the condition of the same volume with the traditional steering engine. The program is also simple to write, and no external library file is used. The steering engine is improved in terms of hardware and procedures.

Claims (2)

1. A potential control steering engine is characterized in that a potentiometer main body (3) is assembled on a gear reduction box (4) at the front end of a direct current motor (5), a potential sliding end (2) is assembled on a power output shaft of the gear reduction box (4), and the potential sliding end (2) is continuously contacted with a C-shaped resistor disc (3-1) on the potentiometer main body (3).

2. The type C resistance card (3-1) according to claim 1, characterized in that its two ends are designed with terminal a (3-2) and terminal C (3-4), respectively, and the potential slider end (2) is in close contact with the other end of terminal B (3-3) at the same time.

Images