KR102354195B1 - Control appratus for drive garbage car PHEV - Google Patents

Abstract

The present invention relates to a driving control device for a PHEV cleaner, and more particularly, when an analog voltage value of 0 to 5V in the accelerator pedal is applied to a vehicle control unit (VCU) according to the operation of the accelerator pedal, the motor according to the acceleration state of the vehicle Torque and speed commands are transmitted to the controller (MCU), and the MCU generates power to the wheels through the engine's reducer to increase the speed. is transmitted to the vehicle controller (VCU) and is configured to decelerate so that the air pressure is electrically controlled by a pneumatic pressure control valve (PCV) installed in the brake line.
Accordingly, in order to transmit acceleration and deceleration signals to the wheels with the power of the motor during acceleration and deceleration of the plug-in hybrid vacuum cleaner, the brake air pressure is reduced by calculating the vehicle current speed, creep torque calculation value, accelerator pedal conversion value, and regenerative braking calculation value. It reduces the braking torque by reducing the pressure, and through the smooth regenerative braking by the reduced braking torque, it is possible to ensure the stable driving of the PHEV cleaning vehicle.

Description

PHEV cleaning vehicle driving control device {Control appratus for drive garbage car PHEV}

The present invention relates to a driving control device for a PHEV cleaning vehicle, and more particularly, to transmit acceleration and deceleration signals to the wheels with the power of a motor during acceleration and deceleration of a plug-in hybrid cleaning vehicle. The present invention relates to a driving control device for a PHEV cleaning vehicle capable of reducing braking torque by reducing braking air pressure by calculating a converted value and regenerative braking operation value, and capable of regenerative braking by the reduced braking torque.

Recently, interest in environmental pollution is rapidly increasing, and eco-friendly vehicles (HEV, EV, PHEV) are appearing in response to this. These eco-friendly vehicles refer to a vehicle in which a motor or an engine operates as a power source and has a battery charged by an external power source to drive the motor.

Further, the plug-in hybrid vehicle includes an engine as an internal combustion engine as a power source, and a motor as another power source. The engine is operated according to the combustion of gasoline using gasoline or the like as fuel. The motor is connected to the battery and operated using electric power charged in the battery. Looking at the structure of a typical plug-in hybrid vehicle, each output shaft of the engine and the motor is connected to a power split mechanism, and the operations of the engine, the motor, and the power split mechanism are controlled by the ECU. The motor is operated by power charged in the battery, and the battery is charged with power supplied from an external power source. At this time, the ECU controls the operation of charging the battery from an external power source according to the voltage, current, or temperature condition of the battery.

Eco-friendly vehicles are equipped with a low voltage DC-DC converter (LDC). In hybrid vehicles, the electric energy of the high-voltage battery is step-down to charge the low-voltage (auxiliary) battery, and various electronic components in the vehicle. It is responsible for supplying the operating power of

A hybrid vehicle, which is an example of such an eco-friendly vehicle, uses an internal combustion engine and battery power together. That is, the hybrid vehicle efficiently combines and uses the power of the internal combustion engine engine and the power of the motor.

A hybrid vehicle may be composed of an engine, a motor, an engine clutch that controls power between the engine and the motor, a transmission, a differential gear device, a battery, a starter generator that starts the engine or generates power by the output of the engine, and wheels have.

In addition, the hybrid vehicle includes a hybrid control unit for controlling the overall operation of the hybrid vehicle, an engine control unit for controlling the operation of the engine, a motor control unit for controlling the operation of the motor, It may be composed of a transmission control unit that controls the operation of the transmission, and a battery control unit that controls and manages the battery.

1, a typical hybrid vehicle transmits engine power to wheels (wheels) through a transmission, and when the driver presses the accelerator pedal or the brake pedal to accelerate and decelerate the vehicle, 0 ~ on the accelerator pedal When the 5V analog voltage value is transmitted to the engine ECU, the ECU accelerates the engine to generate power. When the driver presses the brake pedal during deceleration, the brake amount is directly connected to the air pressure to control the amount of movement of the brake lining and the amount of braking torque.

On the other hand, in the case of a Plug-in Hybrid Electric Vehicle, a pneumatic engine and electricity are driven in parallel to drive the engine using the expansion force of compressed air, and if necessary, the pneumatic engine is driven by a battery motor. It is operated when a sudden acceleration is required, such as when starting or on a slope, and there is a problem that this cannot be applied to a conventional hybrid vehicle.

Accordingly, the present invention intends to propose a control device that can be applied to a general cleaning vehicle by a PHEV and driven by a battery motor.

1. Plug-in Hybrid Electric Vehicle and Driving Control Method thereof (Patent Registration No. 10-1583990) 2. Method for controlling driving mode of plug-in hybrid electric vehicle (Patent Application No. 10-2015-0088267)

The present invention has been devised to solve the above problems, and its purpose is to transmit acceleration and deceleration signals to the wheels with the power of the motor during acceleration and deceleration of a plug-in hybrid vacuum cleaner. An object of the present invention is to provide a driving control device for a PHEV cleaning vehicle capable of reducing braking torque by reducing braking pressure by calculating a converted value and regenerative braking operation value, and capable of regenerative braking by the reduced braking torque.

In addition, the present invention is equipped with a pressure sensor on the brake of the plug-in hybrid cleaning vehicle and a PVC (Pressure control value) on the pneumatic line on the rear wheel, and an angle sensor is installed so that the brake pedal value can be recognized electrically, the angle value is transmitted to the vehicle controller ( VCU), the VCU calculates the braking torque by considering the air pressure, vehicle speed, and the amount of regenerative braking. and to provide a driving control device for a PHEV cleaning vehicle capable of deceleration by applying a (-) torque value to the motor by the amount of regenerative braking in the VCU.

In accordance with the operation of the accelerator pedal, the PHEV cleaner driving control device according to an embodiment of the present invention achieves the above object. Torque and speed commands are transmitted to the motor controller (MCU) according to and transmits the angle value to the vehicle controller (VCU) and controls the air pressure to be electrically reduced by the air pressure control valve (PCV) installed on the brake line, and the motor controller (MCU) controls the accelerator pedal in the vehicle condition check unit. When the analog voltage value according to the acceleration according to the driving is applied to the VCU, the Shift_Position state value of the current vehicle R(REAR), B(BACK), D(DRIVE) according to the vehicle acceleration state, the Vechle_speed value according to the vehicle speed, Receive and check the state value of the brake switch, and check the rolling resistance, air resistance, inclination resistance, and inertia resistance values in the torque calculation unit for driving the vehicle for creep torque calculation according to the increase speed. transmits the result to the combination unit, converts the 0 ~ 5V analog voltage value according to the driving of the accelerator pedal in the pedal conversion unit, calculates the torque factor (Torque_Factor) in consideration of the vehicle speed, and sends the result to the combination unit Transmits the converted and calculated torque value, and considers the vehicle's Shift_Position state value, the Vechle_speed value according to the vehicle speed, the state value of the brake switch, the target regenerative torque, the battery SOC state, the battery temperature, and the battery charge state. The regenerative braking torque amount is determined in the regenerative braking unit by reflecting the system limit value from The combination unit combines the torque value calculated in Fig. and the determined value of the amount of decompressed air determined by the regenerative braking torque amount in the regenerative braking unit to calculate a speed value according to the increase in speed, and the speed value calculated according to the increase in the speed in the combination unit And according to the driving of the accelerator pedal confirmed in the vehicle status check unit, the Shift_Position status value of the current vehicle R(REAR), B(BACK), D(DRIVE) according to the vehicle acceleration status, the Vechle_speed value according to the vehicle speed, It is characterized in that it is configured to combine the transmitted signal of the state value of the brake switch and transmit the speed increased to the calculated speed value through the output unit.

delete

delete

The PHEV cleaning vehicle driving control device according to the present invention provides a vehicle current speed, a creep torque calculation value, an accelerator pedal conversion value, and regenerative braking to transmit acceleration and deceleration signals to the wheels with the power of a motor when the plug-in hybrid cleaning vehicle accelerates and decelerates. By calculating the calculated value, the braking torque is reduced by reducing the braking pressure, and by the reduced braking torque, it is possible to ensure the stable driving of the PHEV cleaner through smooth regenerative braking.

In addition, the driving control device for a PHEV cleaning vehicle according to an embodiment of the present invention includes a pressure sensor on the brake of the plug-in hybrid cleaning vehicle and a pressure control value (PVC) on the pneumatic line on the rear wheel so that the brake pedal value can be recognized electrically. When the angle sensor is installed and the angle value is transmitted to the vehicle controller (VCU), the VCU calculates the braking torque considering the air pressure, vehicle speed, and the amount of regenerative braking, and the air pressure is adjusted through the air pressure control valve (PCV) of the brake line. The brake value is determined through pneumatic braking and regenerative braking, and a negative torque value is applied to the motor by the amount of regenerative braking from the VCU to achieve deceleration, providing the effect of variably installing and operating the control device depending on the vehicle.

In addition, the driving control apparatus for a PHEV cleaner according to an embodiment of the present invention includes a torque calculation logic according to the current vehicle state, a torque duration calculation control logic according to the generation of fault diagnosis information including a failsafe function, and braking linked to a regenerative braking mechanism It provides the effect of ensuring stable acceleration and acceleration by allowing the vehicle power to be driven only by the motor through the PCV control that reduces the air pressure before branching in the torque calculation, real-time control logic, and regenerative braking algorithm.

1 is a schematic diagram showing an increase step of a conventional HEV vehicle;
2 is a schematic diagram showing the speed-up step of the PHEV cleaning vehicle according to the present invention;
3 is a schematic diagram illustrating a deceleration step of a PHEV cleaning vehicle according to the present invention;
4 is a block diagram showing the detailed configuration of a motor controller (MCU) of the PHEV cleaning vehicle of the present invention according to FIG.
5 is a state diagram illustrating a motor torque logic of a motor controller (MCU) of the PHEV cleaning vehicle according to FIG. 4 ;

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

The plug-in hybrid electric vehicle according to the present invention uses two power sources together as the name of [hybrid: hybrid], but in that it uses an internal combustion engine and an electric motor, it has a structure similar to that of a general hybrid vehicle (HEV) is like

In other words, a PHEV vehicle has an electric fast charging port and uses electricity by rapidly charging it like an electric vehicle. also run The pneumatic engine operates when rapid acceleration is required, such as when starting or on a slope, and is converted to an electric motor when it reaches 20 to 25 km/h after starting.

The driving principle of a plug-in hybrid electric vehicle is that it uses an electric motor when starting and driving at low speed, and unlike a general hybrid (HEV), which uses both an internal combustion engine and an electric motor when driving at high speed, most of the It uses an electric motor, and it is the same as a general hybrid vehicle (HEV) in that it converts inertial energy generated when the vehicle is braked into electric energy using a 'regenerative braking system'.

FIG. 2 is a schematic diagram showing the speed-up step of the PHEV cleaning vehicle according to the present invention, and FIG. 3 is a schematic diagram showing the deceleration step of the PHEV cleaning vehicle according to the present invention. Looking at the operation status of acceleration and deceleration, when the driver operates the accelerator pedal during acceleration, the analog voltage value of 0 ~ 5V in the accelerator pedal is applied to the vehicle control unit (VCU). ), the torque and speed commands are transmitted, and the MCU generates power to the wheel wheels through the reducer of the engine.

In addition, when the driver drives the brake pedal 100 during deceleration, the brake pedal amount is transmitted by the angle sensor connected to the brake pedal, and the angle value is transmitted to the vehicle controller (VCU) 200, and the VCU 200 is the brake line The air pressure is electrically controlled by a pneumatic control valve (PCV) installed in the

That is, when the brake pedal amount is transmitted to the angle sensor, the VCU calculates the braking torque by considering the input values of air pressure, vehicle speed, and regenerative braking amount, and operates PCV (Pressure Control Value) to adjust the air pressure and determine the brake value. .

4 is a block diagram illustrating a detailed configuration of a motor controller (MCU) of a PHEV cleaning vehicle according to the present invention according to FIG. 2, and FIG. 5 is a motor torque logic of the motor controller (MCU) of the PHEV cleaning vehicle according to FIG. As shown in the illustrated state diagram, looking at the detailed configuration and operation of the motor controller (MCU) during acceleration with reference to the accompanying FIGS. 4 to 5, the motor controller (MCU) 300 is largely a control unit 310, a vehicle It is configured to include a status check unit 320 , a torque calculation unit 330 , a pedal conversion unit 340 , a regenerative braking unit 350 , a combination unit 360 , and an output unit 370 .

The motor controller (MCU) 300 controls vehicle driving-related logic according to the state of the vehicle for driving the vehicle. It controls the overall operation of the motor controller so that the torque and speed are transmitted according to the vehicle acceleration state, and the power of the wheel is generated through the deceleration of the engine.

When the analog voltage value is applied to the VCU according to the driving of the accelerator pedal according to the speed increase, the vehicle status check unit 320 performs R (REAR), B (BACK), D (DRIVE) of the current vehicle according to the vehicle acceleration status. Shift_Position state value, vechle_speed value according to vehicle speed, and brake switch state value are transmitted and checked.

The torque calculator 330 checks the rolling resistance, air resistance, inclination resistance, and inertia resistance values for driving the vehicle for creep torque calculation according to the increase speed, and confirms whether the magnitude of the resistance value according to the driving is greater than the resistance value. The result is transmitted to the combination unit 360 .

At this time, in order to drive the vehicle, the vehicle is driven only when the driving resistance value is greater than the rolling resistance, air resistance, inclination resistance, and inertia resistance values.

The pedal conversion unit 340 converts a 0 to 5V analog voltage value according to the driving of the accelerator pedal in response to the control signal of the control unit 310 and calculates a torque factor (Torque_Factor) in consideration of the vehicle speed, and the combination The converted and calculated torque is transmitted to the unit 360 .

The regenerative braking unit 350 calculates the regenerative braking amount in consideration of the vehicle's Shift_Position state value, the Vechle_speed value according to the vehicle speed, the brake switch state value, the target regeneration torque, the battery SOC state, the battery temperature, and the battery charge state. By reflecting the limit value, the amount of regenerative braking torque is determined so that the air pressure is reduced, and the determined value is transmitted to the combination unit 360 .

The combination unit 360 includes the Creep Torque calculation value of the torque calculation unit 330 , the torque value calculated for the speed with respect to the converted analog voltage value of the pedal converting unit 340 , and the amount of regenerative braking torque in the regenerative braking unit 350 . Calculate the speed value according to the increase by combining the determined values of the amount of decompressed air determined by .

The output unit 370 is the R of the current vehicle according to the acceleration state of the vehicle according to the speed value calculated according to the increase in the combination unit 360 and the driving of the accelerator pedal confirmed by the vehicle condition check unit 320 . (REAR), B (BACK), D (DRIVE) Shift_Position state value, vechle_speed value according to the vehicle speed, and the transmitted signal of the brake switch state value are combined to transmit the increased speed with the calculated speed value. .

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms are used, these are only used in a general sense to easily explain the technical content of the present invention and help the understanding of the present invention. , it is not intended to limit the scope of the present invention. It will be apparent to those of ordinary skill in the art to which the present invention pertains that other modifications based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

100: accelerator pedal
200: VCU
300 : MCU
310: control unit 320: vehicle status check unit
330: torque calculation unit 340: pedal conversion unit
350: regenerative braking part 360: combination part
370: output unit
400: reducer
500: drive wheel

Claims (3)

When the analog voltage value of 0 ~ 5V in the accelerator pedal is applied to the vehicle control unit (VCU) according to the operation of the accelerator pedal, torque and speed commands are transmitted to the motor controller (MCU) 300 according to the acceleration state of the vehicle, and the MCU is increased by generating power to the wheels through the engine's reducer,
When the brake pedal 100 is driven, the brake pedal amount is checked by the angle sensor connected to the brake pedal, the angle value is transmitted to the vehicle controller (VCU), and the air pressure is electrically controlled by the air pressure control valve (PCV) installed in the brake line. control to be decelerated to
The motor controller (MCU) 300 is
When the analog voltage value according to the acceleration is applied to the VCU according to the driving of the accelerator pedal in the vehicle status check unit 320, Shift_Position of R(REAR), B(BACK), D(DRIVE) of the current vehicle according to the vehicle acceleration state Receive and check the status value, the Vechle_speed value according to the vehicle speed, and the status value of the brake switch,
For driving the vehicle for creep torque calculation according to the speed increase, the torque calculation unit 330 checks the rolling resistance, air resistance, inclination resistance, and inertia resistance values in the torque calculation unit 330 to check whether the size of the resistance value according to the driving is greater than the resistance value, and the combination unit send the result to 360;
The pedal conversion unit 340 converts a 0 ~ 5V analog voltage value according to the driving of the accelerator pedal, calculates a torque factor (Torque_Factor) in consideration of the vehicle speed, and converts the calculated torque value to the combination unit 360. send,
The regenerative braking unit ( 350) determines the amount of regenerative braking torque to reduce the air pressure and transmits the determined value to the combination unit 360,
The Creep Torque calculation value of the torque calculation unit 330, the torque value calculated for the speed for the converted analog voltage value of the pedal converting unit 340, and the amount of decompressed air determined by the regenerative braking torque amount in the regenerative braking unit 350 Combining the determined values in the combination unit 360 to calculate the speed value according to the increase,
R(REAR), B(BACK), The Shift_Position state value of D (DRIVE), the Vechle_speed value according to the vehicle speed, and the transmitted signal of the state value of the brake switch are combined to transmit the speed increased as the speed value calculated through the output unit 370 PHEV cleaning vehicle driving control system. delete delete

Images