CN201884515U - Magnetic powder clutch electronic controller for vehicle - Google Patents

Abstract

The utility model relates to a magnetic powder clutch electronic controller for a vehicle, which belongs to the technical field of magnetic powder clutch control and solves the control problems of a magnetic powder clutch for the vehicle. Acquired rotating speed signals are output to a microcontroller by a rotating speed signal processing circuit of the electronic controller; acquired switching value signals are output to the microcontroller by a switching value signal processing circuit; acquired analog quantity signals are output to the microcontroller by an analog quantity signal processing circuit; the control signal output end of the microcontroller is connected with the control signal input end of a power drive circuit; and the control signal output end of the power drive circuit is used for outputting the exciting current of the clutch. The utility model is used for controlling the magnetic powder clutch for the vehicle.

Description

Magnetic powder clutch electronic controller for vehicle

technical field

The utility model relates to an electronic controller of a magnetic powder clutch for a vehicle, which belongs to the technical field of magnetic powder clutch control.

Background technique

Manual transmission vehicles require the driver to have high driving skills and experience. Beginners are often difficult to control due to lack of driving skills and experience, which makes the vehicle less economical and comfortable, and it is easy to cause the life of vehicle parts to be shortened. reduce. The automatic clutch effectively solves the problem of operating the clutch during vehicle starting and gear shifting.

Among the current vehicle clutches, the diaphragm spring clutch is widely used because of its simple structure, low cost, and high transmission efficiency. However, due to its non-linear load characteristics and torque transmission characteristics, and the use of mechanical moving parts, It is not easy to realize precise electronic control, and it is easy to cause shock at the start of the vehicle, so it is mainly used for manual transmission. The hydraulic torque converter can make the vehicle start smoothly, but its efficiency is low, the structure is complicated, and the cost is high. With the development of ferromagnetic material technology, magnetic powder clutches for vehicles have gradually entered the practical stage.

Utility model content

The purpose of the utility model is to provide an electronic controller of the magnetic powder clutch for vehicles in order to solve the control problem of the magnetic powder clutch for vehicles.

The utility model comprises a rotational speed signal processing circuit, a switch signal processing circuit, an analog signal processing circuit, a microcontroller and a power drive circuit,

The rotational speed detection end of the clutch driving disc of the rotational speed signal processing circuit is used to detect the rotational speed of the clutch driving disc, the rotational speed detection end of the clutch driven disc of the rotational speed signal processing circuit is used to detect the rotational speed of the clutch driven disc, and the rotational speed signal processing circuit The speed detection end of the transmission output shaft is used to detect the speed of the transmission output shaft.

The hand brake signal detection end of the switch signal processing circuit is used to detect the signal of the hand brake switch, the foot brake signal detection end of the switch signal processing circuit is used to detect the signal of the foot brake switch, and the switch signal processing circuit The key door ignition signal detection terminal is used to detect the signal of the key door ignition switch, and the neutral gear signal detection terminal of the switch signal processing circuit is used to detect the neutral gear signal.

The clutch current detection end of the analog signal processing circuit is used to detect the current signal of the clutch, the throttle opening signal detection end of the analog signal processing circuit is used to detect the throttle opening signal, and the power supply voltage signal detection of the analog signal processing circuit The terminal is used to detect the power supply voltage signal,

The speed signal output end of the speed signal processing circuit is connected to the speed signal input end of the microcontroller, the switch signal output end of the switch signal processing circuit is connected to the switch signal input end of the microcontroller, and the analog signal output end of the analog signal processing circuit Connect to the analog signal input terminal of the microcontroller,

The control signal output end of the microcontroller is connected to the control signal input end of the power drive circuit, and the control signal output end of the power drive circuit is used to output the excitation current of the clutch.

The utility model has the advantages that: the utility model takes the vehicle magnetic powder clutch as the control target, through the collection of various data in the vehicle, and analyzes and calculations, and realizes the control of the power drive circuit according to the control strategy and its algorithm, Furthermore, the excitation current of the magnetic powder clutch can be controlled, and the operation of the clutch can be achieved when the vehicle starts and shifts gears.

Experiments have proved that the utility model can be successfully applied to miniature vehicles, and has successfully run nearly 10,000 kilometers, and the power and economy have reached or approached the indexes of similar automatic transmission vehicles.

Description of drawings:

Fig. 1 is a signal flow block diagram of the present utility model;

Fig. 2 is the working flow diagram of the electronic controller of the vehicle magnetic powder clutch of the utility model.

Detailed ways

Specific embodiment 1: The present embodiment will be described below in conjunction with FIG. 1 . This embodiment includes a speed signal processing circuit 1, a switch signal processing circuit 2, an analog signal processing circuit 3, a microcontroller 4 and a power drive circuit 5.

The rotational speed detection end of the clutch driving disc of the rotational speed signal processing circuit 1 is used to detect the rotational speed of the clutch active disc, and the rotational speed detection end of the clutch driven disc of the rotational speed signal processing circuit 1 is used to detect the rotational speed of the clutch driven disc, and the rotational speed signal The speed detection end of the transmission output shaft of the processing circuit 1 is used to detect the speed of the transmission output shaft,

The hand brake signal detection end of the switch signal processing circuit 2 is used to detect the signal of the hand brake switch, the foot brake signal detection end of the switch signal processing circuit 2 is used to detect the signal of the foot brake switch, and the switch signal processing The key door ignition signal detection end of the circuit 2 is used to detect the signal of the key door ignition switch, and the neutral gear signal detection end of the switch signal processing circuit 2 is used to detect the neutral gear signal.

The clutch current detection end of the analog signal processing circuit 3 is used to detect the current signal of the clutch, the throttle opening signal detection end of the analog signal processing circuit 3 is used to detect the throttle opening signal, and the power supply of the analog signal processing circuit 3 The voltage signal detection terminal is used to detect the power supply voltage signal,

The speed signal output end of the speed signal processing circuit 1 is connected to the speed signal input end of the microcontroller 4, the switch signal output end of the switch signal processing circuit 2 is connected to the switch signal input end of the microcontroller 4, and the analog signal processing circuit 3 The analog signal output end is connected to the analog signal input end of the microcontroller 4,

The control signal output end of the microcontroller 4 is connected to the control signal input end of the power drive circuit 5, and the control signal output end of the power drive circuit 5 is used to output the excitation current of the clutch.

The microcontroller 4 adopts the XC164CM single-chip microcomputer produced by Infineon Company.

The clutch drive disc is connected with the output shaft of the engine, the speed of the clutch drive disc is the engine speed, the clutch driven disc is connected with the input shaft of the transmission, the clutch driven disc speed is the input shaft speed of the transmission, and the speed signal processing circuit 1 Convert the detected pulse signals of the clutch driving disc speed, clutch driven disc speed and transmission output shaft speed into 0V and 5V level pulse signals and input them to the speed signal input port of the microcontroller 4; the analog signal The processing circuit 3 processes the detected analog signal of clutch current, throttle opening and power supply voltage into an analog voltage signal of 0-5V and outputs it to the microcontroller 4; the switch signal processing circuit 2 converts the detected neutral gear Switch signals such as position, key, door ignition and brake are processed into level signals of 0V to 5V, which are read by the I/O port of microcontroller 4 .

The power drive circuit 5 is designed as a Buck-type step-down chopper circuit, and the control method adopts current closed-loop control to adjust the excitation current of the magnetic powder clutch.

Specific embodiment two: below in conjunction with Fig. 1, present embodiment is described, and the difference between present embodiment and embodiment one is that it also includes CAN communication circuit 6, and the communication signal output end of microcontroller 4 connects CAN communication circuit 6 Communication signal input terminal. Other components and connections are the same as those in Embodiment 1.

CAN communication circuit 6 is realized by TLE6250G chip. The CAN communication circuit 6 can realize sending and receiving of data.

This embodiment can communicate with other electronic control units of the whole vehicle by means of TTCAN communication, and has good compatibility when used in different miniature vehicles.

Specific embodiment three: the present embodiment is described below in conjunction with Fig. 1, and the difference between this embodiment and embodiment one or two is that it also includes a fault indication unit 7, and the fault signal output end of the microcontroller 4 is connected to the fault indication unit 7 fault signal input. Other compositions and connections are the same as those in Embodiment 1 or 2.

The fault indication unit 7 can realize the fault self-diagnosis function of the utility model, and can display when a fault occurs, and send fault codes through CAN information, and cooperate with the receiving instrument to prompt the driver's operation.

Specific embodiment four: below in conjunction with Fig. 1 illustrate this embodiment, the difference between this embodiment and embodiment one is, it also comprises JTAG interface 8, the input and output end of microcontroller 4 connects the output and input end of JTAG interface 8 . Other components and connections are the same as those in Embodiment 1.

The JTAG interface 8 can realize online programming of the microcontroller 4 .

Embodiment 5: The present embodiment will be described below with reference to FIG. 1 and FIG. 2 . The difference between this embodiment and Embodiment 1 is that it also includes a power supply 9 , which is used to provide working power for the microcontroller 4 . Other components and connections are the same as those in Embodiment 1.

The power supply 9 adopts the TLE7469 chip produced by Infineon Company.

As shown in Fig. 2, at first the micro-controller 4 is system initialized, and then the opening state of the key door is judged. Output the data and sort it out, then judge the neutral gear state, if it is neutral, call the neutral subroutine, otherwise judge whether it is in the braking state, if it is in the braking state, call the braking subroutine, otherwise judge the engine speed Whether n _e is less than the minimum speed limit n _es of the engine at idle speed, if so, call the engine flameout protection subroutine, otherwise calculate the target excitation current increment of the magnetic powder clutch according to the control parameters, and then run the target current tracking program of the magnetic powder clutch, Then cycle through the above process.

The utility model is not limited to the above-mentioned embodiments, but can also be a reasonable combination of the technical features described in the above-mentioned embodiments.

Claims (5)

1. automobile-used magnetic powder clutch electronic controller, it is characterized in that: it comprises tach signal processing circuit (1), switching value signal processing circuit (2), analog signals processing circuit (3), microcontroller (4) and power driving circuit (5),

The clutch driving plate rotating speed test end of tach signal processing circuit (1) is used for detecting the rotating speed of described clutch driving plate, the clutch driven plate rotating speed test end of tach signal processing circuit (1) is used for detecting the rotating speed of described clutch driven plate, the transmission output speed test end of tach signal processing circuit (1) is used for detecting the rotating speed of transmission output shaft

The hand braking input end of switching value signal processing circuit (2) is used for detecting the signal of park brake switch, the foot brake input end of switching value signal processing circuit (2) is used for detecting the signal of foot brake switch, the key door fire signal test end of switching value signal processing circuit (2) is used for detecting the signal of key door ignition switch, the neutral gear gear signal test end of switching value signal processing circuit (2) is used for detecting the signal of neutral gear gear

The clutch current test end of analog signals processing circuit (3) is used for detecting the current signal of described clutch, the accelerator open degree input end of analog signals processing circuit (3) is used for detecting the accelerator open degree signal, the power supply voltage signal test end of analog signals processing circuit (3) is used for detecting power supply voltage signal

The tach signal output terminal of tach signal processing circuit (1) connects the tach signal input end of microcontroller (4), the switching signal output terminal of switching value signal processing circuit (2) connects the switching signal input end of microcontroller (4), the analog signals output terminal of analog signals processing circuit (3) connects the analog signals input end of microcontroller (4)

The control signal output terminal of microcontroller (4) connects the control signal input end of power driving circuit (5), and the control signal output terminal of power driving circuit (5) is used to export the field current of described clutch.

2. automobile-used magnetic powder clutch electronic controller according to claim 1 is characterized in that: it also comprises CAN communicating circuit (6), and the communication signal output terminal of microcontroller (4) connects the communication signal input end of CAN communicating circuit (6).

3. automobile-used magnetic powder clutch electronic controller according to claim 1 and 2 is characterized in that: it also comprises indicating fault unit (7), and the trouble signal output terminal of microcontroller (4) connects the trouble signal input end of indicating fault unit (7).

4. automobile-used magnetic powder clutch electronic controller according to claim 1 is characterized in that: it also comprises jtag interface (8), and the input/output terminal of microcontroller (4) connects the I/O of jtag interface (8).

5. automobile-used magnetic powder clutch electronic controller according to claim 1 is characterized in that: it also comprises power supply (9), and power supply (9) is used for providing working power to microcontroller (4).

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