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QC/T 1083-2017: Controller for automobile electrical power steering
QC/T 1083-2017
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.50
T 23
Controller for Automobile Electrical Power Steering
ISSUED ON: APRIL 12, 2017
IMPLEMENTED ON: OCTOBER 01, 2017
Issued by: Ministry of Industry and Information Technology of PRC
Attachment:
Number, name and date of implementation of 22 automotive industry
standards
No. Standard number Standard name Number of standard replaced
Date of
implementation
301 QC/T 727-2017 Instrument for automobile and motorcycle QC/T 727-2007 2017-10-01
302 QC/T 803-2017 Oxygen sensor for automobile QC/T 803.1-2008 2017-10-01
303 QC/T 1072-2017 Gear position sensor for automobiles 2017-10-01
304 QC/T 1073.1-2017 Accelerometers for automobiles - Part 1: Linear accelerometers 2017-10-01
305 QC/T 1074-2017 Technical specifications for automotive parts remanufacturing products 2017-10-01
306 QC/T 1075-2017
Technical conditions for metal
honeycomb carrier of exhaust catalytic
converter
2017-10-01
307 QC/T 777-2017
Technical conditions for
electromagnetic fan clutch of
automobile
QC/T 777-2007 2017-10-01
308 QC/T 1076-2017
Performance requirements and test
methods for continuously variable
transmission (CVT)
2017-10-01
309 QC/T 1077-2017
Terminology and definitions for
classification of automatic control
transmission for automobile
2017-10-01
310 QC/T 1078-2017 Advertising vehicle 2017-10-01
311 QC/T 1079-2017 Suction and delivery vehicle 2017-10-01
312 QC/T 1080-2017 Mobile loudspeaker for popularization of science 2017-10-01
313 QC/T 1081-2017 Electric power steering device for automobile 2017-10-01
314 QC/T 1082-2017 Motor for electric power steering device of automobile 2017-10-01
315 QC/T 1083-2017 Controller for electric power steering device of automobile 2017-10-01
316 QC/T 1084-2017 Sensor for electric power steering device of automobile 2017-10-01
317 QC/T 1085-2017 X-ray testing for light-alloy wheel of motorcycle 2017-10-01
318 QC/T 1086-2017 Technical conditions for range extenders for electric vehicles 2017-10-01
Table of Contents
Foreword ... 7
1 Scope ... 8
2 Normative References ... 8
3 Terms and Definitions ... 9
4 Technical Requirements ... 10
5 Test Methods ... 13
Controller for Automobile Electrical Power Steering
1 Scope
This Standard specifies the technical requirements and test methods of the controller
for automobile electrical power steering.
This Standard is applicable to the controller for various automobile electrical power
steering (hereinafter referred to as controller).
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 2423.1 Environmental Testing for Electric and Electronic and Electronic
Products - Part 2: Test Methods - Tests A: Cold
GB/T 2423.2 Environmental Testing for Electric and Electronic Products - Part 2:
Test Methods - Tests B: Dry Heat
GB/T 2423.3 Environmental Testing - Part 2: Testing Method - Test Cab: Damp
Heat, Steady State
GB/T 2423.17 Environmental Testing for Electric and Electronic Products - Part 2:
Test Method - Test Ka: Salt Mist
GB/T 2423.22 Environmental Testing - Part 2: Tests Methods - Test N: Change of
Temperature
GB/T 2423.34 Environmental Testing - Part 2: Test Methods - Test Z/AD:
Composite Temperature/Humidity Cyclic Test
GB/T 4942.2 Low Voltage Electrical Enclosure Protection Class
GB/T 5179 Term and Definition for the Automobile Steering System
GB/T 17619 Limits and Methods of Testing for Immunity of Electrical / Electronic
Sub-Assemblies in Vehicles to Electromagnetic Radiation
GB/T 18655 Vehicles, Boats and Internal Combustion Engines-Radio Disturbance
Characteristics - Limits and Methods of Measurement for the Protection of on-
Board Receivers
GB/T 19951 Road Vehicles - Test Methods for Electrical Disturbances from
Electrostatic Discharge
GB/T 21437.2 Road Vehicles - Electrical Disturbances from Conduction and
Coupling - Part 2: Electrical Transient Conduction Along Supply Lines Only
QC/T 305 Motor Vehicles - Hydraulic Power Steering Control Valve - Performance
Requirements and Test Methods
QC/T 306 Test Method for Vehicle Power Steering Control Valve Assembly Bench
QC/T 413 Basic Technical Requirements for Automotive Electric Equipment
QC/T 484 Automobile Paint Coating
QC/T 647 Automobile Steering Universal Joint Assembly Performance
Requirements and Test Methods
QC/T 649 Automobile Steering Shaft Assembly Performance Requirements and
Test Methods
QC/T 29096 The Bench Test Methods of Automobile Steering Gear
QC/T 29097 The Technical Specifications of Automobile Steering Gear
3 Terms and Definitions
For the purposes of this Standard, the terms and definitions given in GB/T 5179 and
the following apply.
3.1 Controller working properly
The automobile electric power steering device (hereinafter referred to as device) shall
be installed on the test bench; the controller, motor and sensor are normally connected;
the whole vehicle signal is normally input. After the power is turned on, rotate the
steering wheel device left and right to assist normally.
3.2 Controller failure
The controller is considered invalid in case one of the following conditions:
a) During the function test, due to the controller, there is non-smooth, stuck, obvious
4.1.4.1 Nominal voltage: 12V or 24V.
4.1.4.2 The allowed voltage change range:
a) 9V ~16V (nominal voltage of 12V)
b) 20V ~ 32V (nominal voltage of 24V).
4.1.5 Self-test function and fault code.
The controller shall have self-test function, and can store the fault code.
4.2 Performance
4.2.1 Function.
During the process of manually rotating the steering wheel at different speeds, it shall
be smooth, without stuck or obvious inertia delay.
4.2.2 Power current characteristics.
At different speeds, the relationship between the input torque and the output current,
i.e. the power current characteristics, shall meet the manufacturer’s requirements. The
symmetry of the curve at each vehicle speed (allowed to be represented by 0 km/h
speed) shall be ≥ 90%.
4.2.3 Failure alarm.
The controller shall have the function of failure alarm. When the motor, sensor and the
entire vehicle input signal are detected to be abnormal or controller itself fails, the
controller shall output the fault alarm signal. In the event of any fault, the mechanical
part of the device shall work properly.
4.2.4 Resistance to power supply voltage fluctuation.
The controller shall have the ability to adapt to fluctuations for the power supply voltage.
When the vehicle power supply changes within the range of 9V ~ 16V (nominal voltage
of 12V) or 21.6V ~ 32V (nominal voltage of 24V), the controller shall work properly.
After the test, the variation of the power current characteristics shall be < 15%.
4.2.5 Reverse connection of power supply and voltage overload.
The controller shall have the ability to resisting the reverse connection of power supply
and voltage overload. After test, the controller can work properly.
4.2.6 Drop.
After the drop test, the controller shall work normally; and meet the requirements of
After the test, the controller can work properly, and meet the requirements of 4.2.1.
4.3.8 Electromagnetic compatibility.
4.3.8.1 Radio disturbance characteristics.
The controller shall meet the requirements stipulated in GB/T 18655, and shall reach
the Class-I level of the limit value.
4.3.8.2 Electromagnetic radiation immunity.
The controller shall meet the requirements stipulated in GB/T 17619.
4.3.8.3 Electrical disturbances caused by electrostatic discharge.
The controller shall conform to the provisions of GB/T 19951, and reach the Class-A
requirements.
4.4 Reliability
4.4.1 Fatigue test.
4.4.1.1 After the fatigue test, the controller is not allowed to have any failure.
4.4.1.2 It shall meet the requirements of 4.2.1.
4.4.2 Vibration.
4.4.2.1 After the vibration test, the controller is not allowed to have any cracks or
breaks.
4.4.2.2 It shall meet the requirements of 4.2.1.
5 Test Methods
5.1 Test conditions
5.1.1 Temperature deviation.
This Standard specifies that the temperature deviation in the test method is ±2°C,
unless otherwise specified.
5.1.2 Test voltage.
This Standard specifies the test voltage is 12V±0.5V (nominal voltage of 12V) or
24V±1V (nominal voltage of 24V), unless otherwise specified.
5.1.3 DC power supply for test.
A vehicle battery or a DC stabilized power supply with a ripple ratio of ≤0.5% can be
used.
5.1.4 The installation of the controller shall be performed as per the test requirements.
5.1.5 Only the drop test and connector strength test can be performed alone, other
tests of the controller shall be carried out together with the device.
5.1.6 Test apparatus requirements.
5.1.6.1 In the temperature range of 23°C±5°C, the accuracy of the measurements for
torque, force, displacement, rotation angle, speed, current, and voltage shall be no
less than 0.5%FS.
5.1.6.2 In the temperature range of 23°C±5°C, the resolution for temperature
measurement shall be no less than 1°C.
5.1.6.3 In the temperature range of 23°C±5°C, the resolution for humidity
measurement shall be no less than 10%RH.
5.2 Performance
5.2.1 Function.
Install the device on the test bench; the system works properly; the input end is in the
straight running position; while the output end is applied test load (evenly divided into
5 points, including 0 and Tc); the speed is divided into 5 points in the range of 0~Vmax
(by the interval of 5km/h~20km/h); manually turn the steering wheel to left and right for
test, feeling smooth and no stuck.
5.2.2 Power current characteristics.
5.2.2.1 Install the device on the test bench, the system works properly; the input end
is in the straight running position; rotate the input end at a constant speed; so that the
load on the output end reach the rated load; set different speeds (evenly divided into
5 points, including 0 and Vmax); record the relationship curve between the input torque
and output current under each speed (Figure 1).
the test is completed, check whether the controller works properly.
5.2.5.2 Voltage overload
5.2.5.2.1 If the nominal voltage is 12V, the input end is connected to the +24V power
supply for 1min; after the test is completed, check whether the controller works properly.
5.2.5.2.2 If the nominal voltage is 24V, the input end is connected to the +32V power
supply for 1min; after the test is completed, check whether the controller works properly.
5.2.6 Drop.
5.2.6.1 Place the controller at the height of 1m (the lowest point of the controller) by
the longest diagonal line vertically downwards; then drop it freely (the ground is hard
ground); after the test is completed, check whether the controller works properly.
5.2.6.2 Then perform the tests in 5.2.1~5.2.5.
5.2.7 Connector strength.
5.2.7.1 The controller connects to the corresponding connector; apply a force of 147N
in the direction of insertion and plugging for 5s; do it 5 times continuously; then apply
a force of 49N in the up and down, right and left directions for 5s; do it 2 times
separately. After the test is completed, check whether the controller works properly.
5.2.7.2 Then perform the test in in 5.2.1~5.2.5.
5.2.8 Power consumption at static state.
If the controller works properly, when the ignition switch is off, measure the current
flowing through the controller and power supply line.
5.3 Environment
5.3.1 High temperature.
5.3.1.1 The device works properly; perform the test as per the test B: high temperature
test method stipulated in GB/T 2423.2.
5.3.1.2 Place it for 96h at a temperature of +85°C or +105°C (controller is installed
outside the cab).
5.3.1.3 After the test is completed, directly take test in the test chamber as per 5.2.1;
check whether the controller works properly.
5.3.2 Low temperature
5.3.2.1 The device works properly; perform the test as per the test A: low temperature
tests in the shielded room by the free filed method and large current injection method.
The immunity level limit for the free filed method is 30V/m; while the immunity level
limit for the large current injection method is 60mA.
5.3.8.3 Electrical disturbances caused by electrostatic discharge.
The controller works properly. According to the Class-III test level stipulated in GB/T
19951, perform the test at the speed of 8km/h. The measuring points shall be around
the connector and on the edges of the upper surface of the housing of motor, sensor
and controller; the number of the measured points shall be no less than 10.
5.3.8.4 Electrical transient conduction along the power line.
The controller works properly. Perform the test according to Class-III test level
stipulated in GB/T 21437.2.
5.4 Reliability
5.4.1 Endurance test.
5.4.1.1 The controller works properly. Simulate the current output state of the entire
vehicle; ensure the maximum output of the controller.
5.4.1.2 Finish a total of 7750000 current output periods for 125000 cycles at 25°C; the
current output period for each cycle can refer to Table 2. The current output waveform
for each current period can refer to Figure 5 (allow to enter into the thermal protection
mode designed by the manufacturer).
5.4.1.3 After the test is completed, the controller can work properly.