CN210370918U

CN210370918U - Digital intelligent speed regulating device of self-tuning engine

Info

Publication number: CN210370918U
Application number: CN201921402145.9U
Authority: CN
Inventors: 马洪桂; 刘学良
Original assignee: Guangzhou Nengdong Mechanical And Electrical Equipment Co ltd
Current assignee: Guangzhou Nengdong Mechanical And Electrical Equipment Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-04-21
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a digital intelligent speed regulating device of a self-tuning engine, which comprises an accelerator actuator control output end, a speed signal input end and a digital control unit controller, wherein the accelerator actuator control output end is used for outputting a signal to control an accelerator actuator; the speed signal input end is used for receiving a signal sent by an engine speed sensor; the digital control unit controller is used for processing the signal received by the speed signal input end, converting the signal into a binary digital output signal, and controlling the on-off state of the accelerator actuator through the control output end of the accelerator actuator by the converted binary digital output signal. The utility model discloses can realize the speed governing system of the automatic engine of specialty of level pressure speed governing and constant speed governing as required, can really realize unmanned on duty simultaneously, independently operate, flexible speed governing control need not the effect that professional technical personnel set up.

Description

Digital intelligent speed regulating device of self-tuning engine

Technical Field

The utility model relates to an engine speed governing technology field specifically is a digital intelligent speed adjusting device of self-tuning engine.

Background

Along with the development of industrial automation, the requirement on industrial automation is higher and higher, the speed regulation performance and the requirement on an engine are also higher and higher, and the traditional engine speed regulation uses: firstly, manual speed regulation is carried out, an accelerator pedal or an accelerator cable is used for speed regulation, a pedal connecting rod or a handle rope is used for pulling an accelerator lever of an engine, return oil is reset by a reverse acting spring of the accelerator lever, the engine is slowly accelerated according to the opening degree of the accelerator in the speed regulation mode, the engine is slowly decelerated by the action of an oil pump flyweight when the accelerator is reset, the flexible acceleration and deceleration of the engine can be realized, the running performance of the engine is improved, the control cannot achieve constant-speed running, the control cannot be operated manually, and the technical requirement on operators is very high. Secondly, the electronic throttle is used for speed regulation, the throttle of the engine is pulled through an electronic throttle cable to supply positive electricity, the throttle is continuously increased, the engine is accelerated and supplies negative electricity, the throttle of the engine is continuously reduced under the action of a return spring, and the engine starts to decelerate. And the rated rotating speed is mainly set by mechanical limit of an accelerator, and the constant speed precision is not high. Thirdly, the speed is automatically regulated, an accelerator parking electromagnet for controlling the starting and stopping of the engine is started when the accelerator lever is fully opened, a stepping motor or an actuator capable of regulating a swing angle is changed, a speed sensor for detecting the rotating speed by a speed regulation controller feeds back a signal, a rotating speed analog potentiometer is regulated to regulate and change the rotating speed of the engine, a gain analog potentiometer is regulated to prevent the rotating speed system from being unstable due to overshoot oscillation, and a stable analog potentiometer is regulated to regulate the response speed of the rotating speed system, so that the rotating speed of the engine is regulated and changed. Although the problem that manual operation is needed is solved, the problem that the rotating speed cannot be adjusted in real time only by limiting and fixing the speed of an accelerator mechanism is solved, and the rotating speed signal is acquired, and the speed regulating controller inputs a corresponding voltage value to the actuating mechanism so as to achieve the capability of adjusting the rotating speed of the engine in real time. However, under the control of the mode, when the set rotating speed point is not reached, the control system can continuously increase the voltage value, and quantitatively increase the transmission voltage to the accelerator actuator or the stepping motor according to the analog voltage setting curve so as to continuously increase the rotating speed, when the set rotating speed is reached, because a certain time (0.03-0.1S) is required from the detection of the collected signal and the action of the output actuator to the completion of the adjustment of the accelerator, when the accelerator is adjusted in place, the voltage signal of the next step is controlled to be input again, the engine can execute the speed increasing command again, and the speed reducing control condition is the same. If too many analog collecting points are arranged, the engine can continuously push the throttle stop valve rod back and forth at the same position, so that the engine can continuously move, and the accurate speed regulation can not be achieved. It is usually necessary for a skilled person to perform the (GAIN) and (STAB) commissioning, to fix the engine speed within a small interval, and to operate the engine throttle stably. However, the disadvantage is that the speed regulation at a real fixed point cannot be realized, and the requirement of constant pressure speed regulation cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can realize passing through the self-tuning engine digital intelligent speed adjusting device of self-tuning mode control rotational speed to the rotational speed of engine to conveniently realize high accuracy control engine speed, need not professional technical personnel and set up and also can satisfy its operating condition.

The utility model relates to a digital intelligent speed regulating device of a self-tuning engine, which comprises an accelerator actuator control output end, a speed signal input end and a digital control unit controller;

the throttle actuator control output end is used for outputting a signal to control the throttle actuator;

the speed signal input end is used for receiving a signal sent by an engine speed sensor;

the digital control unit controller is used for processing the signal received by the speed signal input end, converting the signal into a binary digital output signal, and controlling the on-off state of the accelerator actuator through the control output end of the accelerator actuator by the converted binary digital output signal.

A from digital intelligent speed adjusting device of setting engine, receive the signal conversion that engine speed sensor sent to engine speed sensor through the digital control unit controller to speed signal input part and become binary digital output signal to switch on and the off-state of throttle executor through throttle executor control output through binary digital output signal, through the binary signal of digital control unit controller output "0" and "1" promptly, be the permanent outage to throttle executor output binary "0", 1 "is the permanent circular telegram. When the speed signal input end receives the frequency signal of the engine speed sensed by the engine speed sensor and does not reach the set rotating speed or is directly still lower than the set rotating speed, the digital control unit controller outputs '1' to be constantly electrified, and the accelerator actuator is electrified to positively pull the engine accelerator stop valve rod to reach the designed rotating speed value of the engine. When the speed signal input end receives the engine speed frequency signal and reaches the set speed or is directly higher than the set speed, the digital control unit controller outputs '0' constant power-off, the accelerator actuating mechanism is powered off, the accelerator return spring resets and closes the accelerator, the accelerator actuating mechanism is not excited when not powered on, the return spring is driven to return, and the engine speed begins to decrease. When the rotating speed of the engine reaches the set rotating speed again, the digital control unit controller outputs '1' constant energization again, the accelerator actuator receives an instruction to energize, the accelerator begins to be pulled up, and the engine begins to increase the speed again. The digital controller can output '1' and '0' at an overspeed on a required rotating speed set point, the accelerator actuating mechanism is electrified and powered off at an overspeed, the accelerator rod vibrates at an overspeed on a set rotating speed in principle, so that the rotating speed regulation capacity of the engine is realized, a speed regulation system of a professional automatic engine with constant-pressure speed regulation and constant-speed regulation can be realized according to requirements, meanwhile, the effects of unattended operation, autonomous operation and flexible speed regulation control can be really realized, and the setting effect of professional technicians is not needed.

Drawings

FIG. 1 is a schematic structural view of the digital intelligent speed regulating device of the self-tuning engine of the utility model;

fig. 2 is the utility model discloses from setting digital intelligent speed adjusting device wiring structure schematic diagram of engine.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, a digital intelligent speed regulating device for a self-tuning engine comprises an accelerator actuator control output end 9, a speed signal input end 11, and a digital control unit controller, wherein the accelerator actuator control output end 9 is used for outputting a signal to control an accelerator actuator ACT; the speed signal input end 11 is used for receiving a signal sent by an engine speed sensor SR; the digital control unit controller is used for processing the signal received by the speed signal input end 11, converting the signal into a binary digital output signal, and controlling the on-off state of the accelerator actuator ACT through the converted binary digital output signal through the accelerator actuator control output end 9.

When the speed signal input end 11 receives an engine speed sensor SR to sense that the engine speed frequency signal does not reach the set speed or is directly still lower than the set speed, the digital control unit controller outputs '1' constant electrification, the accelerator actuator ACT is electrified to pull the engine accelerator stop valve rod in the forward direction, and the designed engine speed value is reached. When the speed signal input end 11 receives an engine speed sensor SR to sense that the engine speed frequency signal reaches the set speed or is directly higher than the set speed, the digital control unit controller outputs '0' constant power-off, the accelerator actuator ACT is powered off, the accelerator is reset and closed by the accelerator reset spring, the accelerator actuator ACT is not excited when not powered on, the reset spring is driven back, and the engine speed begins to decrease. When the rotating speed of the engine reaches the set rotating speed again, the digital control unit controller outputs '1' constant energization again, the accelerator actuator ACT receives an instruction to energize, the accelerator begins to be enlarged, and the engine begins to increase the speed again. Therefore, the speed regulating system of the professional automatic engine can realize the capacity of regulating the rotating speed of the engine, realize the constant-pressure speed regulation and the constant-speed regulation according to requirements, and simultaneously can really realize unattended operation, autonomous operation and flexible speed regulation control without setting by professional technicians.

As shown in fig. 2, the power input terminal 10 is controlled, the power input terminal 10 is used for controlling and switching the on and off states of the external power supply 1, an ac voltage 220V input by the external power supply 1 is converted into a dc voltage 8 to 30V through a transformer to provide a dc power supply voltage for the digital control unit controller, when the external power supply 1 is disconnected, the digital control unit controller stops working, wherein FU is a fuse and plays a role of voltage protection, and the power input terminal 10 is internally and electrically connected with a storage battery GB.

The input end 5 of the manual speed-regulating potentiometer is electrically connected with the RSR of the adjustable potentiometer, and the rotating speed of the engine can be manually regulated and controlled by additionally adding a 5K-10K potentiometer. And 3V-5V-7V voltage can be externally connected to realize the function of auxiliary speed regulation.

The load sensor power supply end 8 is used for converting voltage to supply power to an engine load sensor PT; a liquid crystal display terminal 12 and a button 4; the liquid crystal display end 12 is used for displaying various parameters, the button 4 comprises a button part and a knob part, and the button 4 is used for manually setting and modifying parameters and controlling the liquid crystal display end 12 to display parameter page turning; the CAN communication end is used for transmitting and receiving data with a computer PC (personal computer), the CAN communication end transmits and receives data with the computer PC by using a standard J1939 communication protocol, and the USB communication port is connected with the computer PC through a data line to set parameters and expand the digital control unit controller and other modules. The computer PC is used for carrying out data transmission and downloading program calculation on the digital control unit controller, the digital control unit controller divides the rotating speed stroke of the engine into two parts of logics of 0 and 1, the division point of the logics of the 0 and 1 is the rotating speed set point of the engine, the button 4 is used for setting display parameters of the control liquid crystal display end 12, and the input end 5 of the manual speed-regulating potentiometer is used for adjusting the running rotating speed of the engine in time. And the digital control unit module and the computer PC transmit and receive data, can record each time of operation data, can default the memory data of each machine type, and is convenient to operate to the maximum extent.

The comprehensive alarm output end 7 is used for outputting a rotating speed overrun alarm, an accelerator actuator ACT short circuit and disconnection alarm, a speed sensor SR and an engine load sensor PT short circuit and disconnection alarm, a digital control unit controller function abnormity fault alarm and a communication fault alarm, and the comprehensive alarm output end is externally connected with an alarm indicator lamp HL or a buzzer.

The idling instruction input end 6 and the idling instruction input end 6 are externally connected with an idling control switch ZK, the idling control switch ZK is idling when being closed, the idling control switch ZK is full speed when being closed, and the idling control switch ZK is idling when being closed and full speed when being opened.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The digital intelligent speed regulating device of the self-tuning engine is characterized by comprising an accelerator actuator control output end (9), a speed signal input end (11) and a digital control unit controller, wherein the accelerator actuator control output end (9) is used for outputting a signal to control an accelerator Actuator (ACT); the speed signal input end (11) is used for receiving a signal sent by an engine speed Sensor (SR); the digital control unit controller is used for processing the signal received by the speed signal input end (11), converting the signal into a binary digital output signal, and controlling the on-off state of the accelerator Actuator (ACT) through the converted binary digital output signal via the accelerator actuator control output end (9).

2. The digital intelligent speed regulating device for the self-tuning engine according to claim 1, further comprising a control power input end (10), wherein the control power input end (10) is used for controlling and switching the on and off states of the external power supply (1).

3. The digital intelligent speed regulating device for the self-tuning engine according to claim 1, characterized by further comprising an idle speed command input end (6), wherein the idle speed command input end (6) is externally connected with an idle speed control switch (ZK).

4. The digital intelligent speed regulating device for the self-tuning engine according to claim 1, characterized by further comprising a manual speed regulating potentiometer input end (5), wherein the manual speed regulating potentiometer input end (5) is electrically connected with an adjustable potentiometer (RSR).

5. The digital intelligent speed regulating device of the self-tuning engine according to claim 1, characterized by further comprising an integrated alarm output end (7), wherein the integrated alarm output end (7) is used for outputting a speed overrun alarm, an accelerator Actuator (ACT) short circuit and wire break alarm, a speed Sensor (SR) and an engine load sensor (PT) short circuit and wire break alarm, a digital control unit controller function abnormality fault alarm and a communication fault alarm, and the integrated alarm output end is externally connected with an alarm indicator lamp (HL) or a buzzer.

6. The digital intelligent speed regulating device of the self-tuning engine according to claim 1, characterized by further comprising a load sensor power supply terminal (8), wherein the load sensor power supply terminal (8) is used for converting voltage to supply power to the load sensor (PT) of the engine.

7. The digital intelligent speed regulating device of the self-tuning engine according to claim 1, characterized by further comprising a liquid crystal display terminal (12) and a button (4); the liquid crystal display end is used for displaying various parameters, the button (4) comprises a button part and a knob part, and the button (4) is used for manually setting parameters, modifying and controlling the liquid crystal display end (12) to display parameter page turning.

8. The digital intelligent speed regulating device for the self-tuning engine according to claim 1, further comprising a CAN communication end and a USB communication port, wherein the CAN communication end is used for transmitting and receiving data with a PC.