Electric loader control system in strong magnetic field environment

Abstract

The utility model discloses an electric loader control system in a strong magnetic field environment, and belongs to the technical field of electric loaders. Comprising a whole vehicle control part and a motor control part, one end of the first connecting part is fixedly connected to the whole vehicle control part, and the other end of the first connecting part is fixedly connected to the motor control part; the device further comprises a driving part; one end of the second connecting part is fixedly connected to the motor control part, and the other end of the second connecting part is fixedly connected to the driving part; according to the utility model, bus communication digital signals which are susceptible to interference are abandoned, and information transmission is carried out by adopting hard wire signal high-low level change simulation state signals; the interference of a strong magnetic field on signals is effectively avoided, and the accuracy and stability of information transmission between the vehicle control unit and the motor controller are ensured; by means of hard wire signal transmission, control over the electric loader by the system is more reliable; the motor controller can accurately receive the torque target instruction sent by the vehicle control unit, and then the rotating speed and torque of the motor are accurately controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric loader technical field especially relates to a kind of electric loader control system under strong magnetic field environment. BACKGROUND

[0002] In the process of modern industry flourishing, electric loader is widely used in various industrial production scenes with its advantages such as environmental protection and high efficiency, and has become indispensable engineering machinery. However, some special industrial production environments, such as strong magnetic field areas of electrolytic aluminum plant and magnetic separation plant, have brought great challenges to the stable operation of electric loader.

[0003] In these strong magnetic field environments, electronic and electrical equipment is easily disturbed by strong interference. The traditional electric loader adopts bus communication mode for closed-loop control, relying on digital signal transmission information. However, strong magnetic field can seriously interfere with bus signals, which may cause unstable signal transmission, data loss or error, and thus make the electric loader control ineffective. This not only reduces production efficiency and increases equipment failure rate, but also may cause safety accidents. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problems raised in the above background technology and proposes an electric loader control system under strong magnetic field environment.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An electric loader control system under strong magnetic field environment comprises:

[0007] A vehicle control part and a motor control part.

[0008] A first connecting part, one end of which is fixedly connected to the vehicle control part, and the other end is fixedly connected to the motor control part.

[0009] Further comprising a driving part.

[0010] A second connecting part, one end of which is fixedly connected to the motor control part, and the other end is fixedly connected to the driving part.

[0011] Preferably, the first connecting part comprises a first wire harness, a second wire harness, a third wire harness, a fourth wire harness and a fifth wire harness, which are used to connect the vehicle control part and the motor control part.

[0012] Further, the vehicle control part is a vehicle controller.

[0013] Further, the motor control part is a motor controller.

[0014] Further, the driving part is an electric motor.

[0015] Compared with the prior art, the electric loader control system in a strong magnetic field environment has the following beneficial effects:

[0016] The parts not involved in the device are the same as or can be realized by the prior art, the control system discards the bus communication digital signal susceptible to interference, and adopts hard-wire signal high-low level change analog state signal for information transmission, effectively avoids the interference of the strong magnetic field on the signal, and ensures the accuracy and stability of information transmission between the vehicle controller and the motor controller.

[0017] It can also enhance the running stability: with the help of hard-wire signal transmission, the system is more reliable in controlling the electric loader; the motor controller can accurately receive the torque target instruction issued by the vehicle controller, and then accurately control the speed and torque of the motor; in a strong magnetic field environment, even if there is interference, the loader can still run stably, reducing the abnormal running caused by control failure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 A strong magnetic field environment electric loader control system structure diagram is provided for the utility model;

[0019] Fig. 2 A strong magnetic field environment electric loader control system motor control part and first connecting part, second connecting part connection structure diagram is provided for the utility model.

[0020] In the figure: 1, vehicle control part; 2, motor control part; 3, driving part; 4, first connecting part; 401, first wire harness; 402, second wire harness; 403, third wire harness; 404, fourth wire harness; 405, fifth wire harness; 5, second connecting part. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Embodiment 1:

[0023] Reference Figs. 1-2 A strong magnetic field environment electric loader control system, comprising:

[0024] Vehicle control part 1 and motor control part 2;

[0025] The first connecting part 4 is fixedly connected at one end to the vehicle control part 1 and at the other end to the motor control part 2;

[0026] It also includes the drive unit 3;

[0027] The second connecting part 5 is fixedly connected at one end to the motor control part 2 and at the other end to the drive part 3.

[0028] The first connection part 4 includes a first wiring harness 401, a second wiring harness 402, a third wiring harness 403, a fourth wiring harness 404, and a fifth wiring harness 405. The first wiring harness 401, the second wiring harness 402, the third wiring harness 403, the fourth wiring harness 404, and the fifth wiring harness 405 are used to connect the vehicle control unit 1 and the motor control unit 2.

[0029] The first wiring harness 401 is the motor torque command wiring harness;

[0030] The second wiring harness 402 is the motor speed feedback wiring harness;

[0031] The third wiring harness 403 is the motor temperature feedback wiring harness;

[0032] The fourth wiring harness, 404, is a current feedback wiring harness;

[0033] The fifth wiring harness, 405, is the fault code feedback harness.

[0034] Vehicle control unit 1 is the vehicle controller.

[0035] Motor control unit 2 is a motor controller.

[0036] The second connection part 5 is a commercially available three-phase AC power supply line for motors.

[0037] Drive unit 3 is an electric motor for loader that can be purchased on the market.

[0038] Reference Fig. 1 , Fig. 2 In practice, electric loaders equipped with this control system were used at strong magnetic field operation sites.

[0039] Before the system starts, the vehicle control unit 1 and the motor control unit 2 complete the initialization self-test to ensure that all components are operating normally; at the same time, the first connecting part 4 and the second connecting part 5 are firmly connected without any looseness, damage or other abnormalities.

[0040] After the system is started, the operator issues an operation instruction through the operating handle in the loader cab, and the issued instruction is transmitted to the vehicle control unit 1; the vehicle control unit 1 sends a motor torque target instruction to the motor control unit 2 through the high-low level combination in the first wire harness 401 according to the operation instruction and the current system state; in specific operation, when the operator requires the loader to advance and is fully loaded, for example, the vehicle control unit 1 will issue an instruction signal with a higher torque requirement; after receiving these high-low level combination signals, the motor control unit 2 identifies and accurately analyzes the torque target instruction through the corresponding relationship stored in advance; then, the motor control unit 2 outputs appropriate three-phase alternating current to the driving unit 3 through the second connection unit 5 according to the torque target instruction, and precisely controls the driving unit 3 speed and torque by accurately controlling the current size, frequency and phase, to drive the loader to advance smoothly or perform other operation actions.

[0041] In the process of loader operation, the motor control unit 2 collects various operating parameters of the driving unit 3 in real time and feeds back to the vehicle control unit 1 through the corresponding wire harness; in specific operation, the motor control unit 2 feeds back the real-time speed information of the driving unit 3 to the vehicle control unit 1 through the high-low level combination in the second wire harness 402; after receiving, the vehicle control unit 1 also identifies the speed state by table lookup to determine whether the driving speed of the loader meets the requirements of the operator's instruction.

[0042] It should be noted that the third wire harness 403 transmits the temperature information of the driving unit 3 from the motor control unit 2 to the vehicle control unit 1 in the form of high-low level combination; after identifying the temperature state, if the temperature of the driving unit 3 is found to be too high, the vehicle control unit 1 will take timely measures; in specific cooling, the motor torque output or the cooling fan can be started to protect the driving unit 3 and prevent damage due to overheating.

[0043] The fourth wire harness 404 is responsible for feeding back the current state information input into the motor control unit 2 to the vehicle control unit 1; the vehicle control unit 1 monitors the work load and system energy consumption of the motor control unit 2 according to the current state, makes necessary adjustments, and ensures efficient and stable operation of the system.

[0044] If the motor control unit 2 detects a fault during operation, it will immediately send a fault code to the vehicle control unit 1 through the fifth wire harness 405; after identifying the fault state, the vehicle control unit 1 responds quickly; in specific implementation, an alarm is triggered to remind the operator to pay attention, and the running speed of the loader is limited or the related actions are stopped to avoid further expansion of the fault and ensure the safety of equipment and personnel.

[0045] The whole vehicle control unit 1 continuously makes logical judgment according to the speed, temperature, current and fault information fed back by the motor control unit 2, and adjusts the motor torque target instruction sent to the motor control unit 2 in real time through the high and low level combination in the first wire harness 401, so as to realize accurate and stable control of the electric loader, and ensure that the electric loader can efficiently and reliably complete various work tasks in a strong magnetic field environment.

[0046] The whole vehicle controller and the motor controller are connected through multiple groups of wire harnesses, and the control system has the following advantages

[0047] Advantages:

[0048] The control system discards the bus communication digital signal which is easy to be disturbed, and adopts hard-wire signal high and low level change analog state signal for information transmission, so that the interference of the strong magnetic field on the signal is effectively avoided, and the accuracy and stability of information transmission between the whole vehicle controller and the motor controller are ensured.

[0049] The system is more reliable in controlling the electric loader by means of hard-wire signal transmission, the motor controller can accurately receive the torque target instruction sent by the whole vehicle controller, and then accurately control the speed and torque of the motor, and even if there is interference in the strong magnetic field environment, the loader can still run stably, and the abnormal running caused by control failure is reduced.

[0050] The above is only the preferred specific implementation mode of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An electric motor loader control system in a high magnetic field environment, characterized by, The application relates to a vehicle control system. The vehicle control system comprises a vehicle control unit (1) and a motor control unit (2); The vehicle control system further comprises a driving unit (3); The vehicle control system further comprises a second connecting unit (5) with one end fixedly connected to the motor control unit (2) and the other end fixedly connected to the driving unit (3). The first connecting unit (4) comprises a first wire harness (401), a second wire harness (402), a third wire harness (403), a fourth wire harness (404) and a fifth wire harness (405), which are used for connecting the vehicle control unit (1) and the motor control unit (2).

2. The electric motor loader control system in a high magnetic field environment according to claim 1, characterized in that, The vehicle control unit (1) is a vehicle controller.

3. An electric motor-driven loader control system in a high magnetic field environment according to claim 2, characterized in that, The motor control unit (2) is a motor controller.

4. The electric motor-driven loader control system in a high magnetic field environment according to claim 2, characterized by, The driving unit (3) is an electric motor.

5. The electric motor-driven loader control system in a high magnetic field environment according to claim 2, characterized by, ​

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