CN202041389U

CN202041389U - A driving resistance loading control platform for hybrid electric vehicles

Info

Publication number: CN202041389U
Application number: CN2011201038915U
Authority: CN
Inventors: 陈笃红; 方小军; 柳先强; 陈凌云; 邬星; 周健豪
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2011-04-11
Filing date: 2011-04-11
Publication date: 2011-11-16
Anticipated expiration: 2021-04-11

Abstract

The utility model discloses a driving resistance loading control platform for a hybrid power automobile, comprising a clutch (1), an electrically controlled clutch (2), an engine (3), an engine control unit (4), an ISG (Integrated Starter Generator) motor, an automatic transmission case, a supercapacitor, an inertial flywheel (6), load motors, a load motor control device and a PXI (PCI Extension for instrumentation) measurement and control platform; the output wheel of the automatic transmission case is connected with a differential mechanism (8), and is connected with the inertial flywheel (6) respectively through both ends of a half shaft (7); the inertial flywheel (6) is respectively connected with the output shafts of the load motors through shaft joints (5); a PXI control platform is connected with a load motor controller, a torque transducer (10) and a rotary transducer (11); and the engine control unit (4), an ISG controller and the PXI control platform are respectively accessed in a CAN (Controller Area Network) bus. The platform matches with mechanical inertial flywheel by adopting double load motors so as to simulate the wheel loading of dynamic automobile in driving process, thereby lowering the requirement on the load motor and meeting the requirement of dynamic test of power assembly rack.

Description

A kind of hybrid electric vehicle is sailed resistance Loading Control platform

Technical field

The utility model belongs to hybrid power automobile power assembly bench test technical field, relates in particular to a kind of hybrid electric vehicle complete vehicle running resistance Loading Control platform.

Background technology

When carrying out the bench test of hybrid power automobile power assembly system, in order to simulate the travel conditions of hybrid vehicle on road, must be when reappearing automobile on the testing table and move on road suffered various resistances, the power of consumption is equal when making operation on power that automobile is consumed when move and the road on testing table.So not only can shorten development test period, and can effectively prevent external interference, reduce experimentation cost.And during bench test, because resistance to rolling, air resistance, grade resistance do not exist.Want to simulate more truly the actual road test of hybrid vehicle, testing table just must be in real time, the various resistances that travel of simulated automotive exactly.

At present, the hybrid power automobile power assembly test-bed adopts the method for mechanical analogue or electric analogy to simulate the car load running resistance more, but these two kinds of schemes all have a lot of weak points.The method of mechanical analogue need be calculated the size and the moment of inertia of flywheel accurately, and is difficult to simulate accurately the whole resistances in the car load driving process.The method that relies on load motor to load separately requires very high to motor, need motor that enough big power is arranged, and the acceleration resistance of car load is calculated quite complicated.

The utility model content

In order to solve the deficiencies in the prior art, the purpose of this utility model is to propose a kind ofly to adopt two load motor cooperative mechanical inertial flywheels to simulate wheel limit load weighted platform in the dynamic car load driving process, solved the too high problem of load motor requirement, satisfied the requirement of power assembly stand dynamic test.

The technical solution of the utility model is: a kind of hybrid electric vehicle is sailed resistance Loading Control platform, comprises clutch coupling, electric control clutch, engine, control unit of engine, ISG motor, automatic gear-box, super capacitor, inertial flywheel, load motor, load motor opertaing device and PXI monitoring platform; Engine links to each other with the ISG motor by electric control clutch, and this ISG motor is connected with automatic gear-box by described clutch coupling; The output wheel of automatic gear-box links to each other with differential mechanism, and respectively connects an inertial flywheel through the semiaxis two ends; Inertial flywheel links to each other with the output shaft of load motor respectively by shaft coupling; Torque sensor, speed probe and photoelectric encoder are installed on the load motor, and this photoelectric encoder links to each other with the load motor opertaing device; PXI control platform links to each other with described load motor controller, torque sensor, speed probe; Control unit of engine, ISG controller and PXI control platform insert the CAN bus respectively.

The central shaft of automatic gear-box output shaft of the present utility model, inertial flywheel and the output shaft of load motor are on same axis.

The beneficial effects of the utility model are: respectively increased a machinery inertial flywheel and simulate complete vehicle quality between differential mechanism and two load motor, it has kept the relative stability of platform system rotating speed, avoid the calculating of the acceleration resistance square of complexity, thereby improve the control accuracy and the response speed of total system; Simplified the control of load motor.Adopt the controller of PXI control platform, make the clock accuracy of system reach the microsecond level by configuration, thereby improve the real-time response performance of system greatly, make stand possess the ability of dynamic similation car load running resistance as loading system.

Description of drawings

Fig. 1 is that hybrid electric vehicle is sailed resistance Loading Control platform synoptic diagram;

Wherein: 1, clutch coupling; 2, electric control clutch; 3, engine; 4, control unit of engine; 5, shaft coupling; 6, inertial flywheel; 7, semiaxis; 8, differential mechanism; 9, photoelectric encoder; 10, torque sensor; 11, speed probe; 12, transmission shaft; 13, ring flange.

Embodiment

As shown in Figure 1, hybrid electric vehicle is sailed resistance Loading Control platform and is comprised clutch coupling 1, electric control clutch 2, engine 3, control unit of engine 4, ISG motor, automatic gear-box, super capacitor, inertial flywheel 6, load motor, load motor opertaing device and PXI monitoring platform; Engine 3 links to each other with the ISG motor by electric control clutch 2, and this ISG motor is connected with automatic gear-box by clutch coupling 1; The output wheel of automatic gear-box links to each other with differential mechanism 8, and respectively connects an inertial flywheel 6 through semiaxis 7 two ends; The rear end ring flange 13 of two inertial flywheels 6 links to each other with the output shaft of load motor respectively with shaft coupling 5 by transmission shaft 12; Be separately installed with torque sensor 10, speed probe 11 and photoelectric encoder 9 on two load motors, photoelectric encoder 9 links to each other with the load motor opertaing device; PXI control platform links to each other with load motor controller, torque sensor 10, speed probe 11; Control unit of engine 4, ISG controller and PXI control platform insert the CAN bus respectively.The central shaft of automatic gear-box output shaft, inertial flywheel 6 and the output shaft of load motor are on same axis.

The principle of work of this Loading Control platform is: engine 3 power output shaft are connected with the ISG motor through electric control clutch 2, clutch end is connected with the input shaft of automatic gear-box through clutch coupling 1 again, power is through automatic gear-box, reach the front end of car load inertial flywheel 6 again by transmission shaft 12, the rear end ring flange 13 of inertial flywheel 6 be connected acceleration resistance and complete vehicle curb weight during inertial flywheel 6 simulation car load road drivings with the output shaft of load motor by transmission shaft 12; The PXI monitoring platform is gathered current vehicle speed signal, shift signal by the CAN bus, and by rotating speed, the torque sensor signal of PXI-6225 collection load motor, PXI-8464 CAN card and PXI-6225 data collecting card are realized synchronous acquisition by the RTSI bus; The PXI monitoring platform calculates according to above-mentioned signal, the traffic information (as road grade, road surface types etc.) of needs simulation and the correlation parameter of car load, provides the target torque of load motor and sends information by PXI PROFIBUS interface to the load motor opertaing device.Carry out after the load motor opertaing device reception information and drive the instruction of load motor to target torque; The load motor opertaing device is gathered the signal of photoelectric encoder, and the computational load actual motor torque also compares with target torque, carries out the PID FEEDBACK CONTROL.

Before the bench simulation test, at first simulated the basic parameter of vehicle, carry out the gradient and the gear of test roads then and select in the host computer setting.When sending when applying resistance signal, hybrid electric vehicle sail resistance Loading Control platform real-time follow-up load motor rotating speed and etc. dynamic parameter, data acquisition system (DAS) begins to carry out real-time image data, the running resistance calculation procedure is according to the speed of gathering, the size of the theoretic running resistance of acceleration calculation (or power of its consumption), compare with actual fly wheel system and the actual equivalent resistance that applies of load motor then, the difference △ F of the two is fed back in the load motor opertaing device, adopt pid algorithm to regulate the loading amplitude, the running resistance (or power) that theoretic running resistance (or power) and bench test are simulated reaches unanimity, and realizes the dynamic load control of running resistance.

The two load motor cooperative mechanical inertial flywheels of stand employing are simulated the wheel limit load in the dynamic car load driving process, thereby make stand possess the ability of test car load power assembly kinematic train (from the engine to the semiaxis) performance.The controller of whole loading system adopts the PXI monitoring platform, makes the clock accuracy of system reach the microsecond level by configuration, thereby improves the real-time response performance of system greatly, makes stand possess the ability of dynamic similation car load running resistance.

Claims

1. A driving resistance loading control platform for a hybrid electric vehicle, comprising a clutch (1), an electronically controlled clutch (2), an engine (3), an engine control unit (4), an ISG motor, an automatic transmission, a supercapacitor, and an inertial flywheel (6); It is characterized in that: it also includes a load motor, a load motor control device and a PXI measurement and control platform; the engine (3) is connected with the ISG motor through an electronically controlled clutch (2), and the ISG motor is passed through the clutch (1) It is connected with the automatic transmission; the output wheel of the automatic transmission is connected with the differential (8), and an inertia flywheel (6) is respectively connected through the two ends of the half shaft (7); the inertia flywheel (6) is connected through the joint The shaft device (5) is connected to the output shaft of the load motor respectively; a torque sensor (10), a speed sensor (11) and a photoelectric encoder (9) are installed on the load motor, and the photoelectric encoder (9) is connected to the load The motor control equipment is connected; the PXI control platform is connected with the load motor controller, the torque sensor (10), and the rotational speed sensor (11); the engine control unit (4), the ISG controller and the PXI control platform are respectively connected to the CAN bus.

2. A kind of driving resistance loading control platform for hybrid electric vehicles according to claim 1, characterized in that: the output shaft of the automatic transmission output shaft, the inertial flywheel (6) and the output shaft of the load motor are on the same axis .