QC/T 1084-2017Sensors for automotive electric power steering (English PDF)
汽车电动助力转向装置用传感器
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
April 12, 2017
Implementation date
October 1, 2017
Scope
QC/T 1084-2017 is the English-translated version of 汽车电动助力转向装置用传感器.
QC/T 1084-2017 covers the sensors of an automotive electric power steering system, giving its requirements and test methods; clause 1 applies it to torque sensors and to (angle) displacement sensors.
Clause 3 holds terms, definitions and classification: a non-contact sensor takes its signal from magnetic, electrical or optical coupling, as with coil induction, Hall effect or a capacitive electric field.
Clause 4 asks the sensor to work from -40 °C to +85 °C or +105 °C, to stand relative humidity of <=95%RH, to run on a DC regulated supply of 24 V or less and to keep working after 2 million reciprocating movements.
Clause 5 fixes the tests: 550 V at 50 Hz between pin and housing for 1 min, a 50 N pull on the lead wire, a free fall from 1 m and 96 h of high temperature, with the climatic methods drawn from the GB/T 2423 series called up in clause 2. Issued on 12 April 2017, it has applied since 1 October 2017.
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Document preview — QC/T 1084-2017
National Standard of the People's Republic of China
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword7
- 1 Scope8
- 2 Normative References8
- 3 Terms, Definitions and Classification9
- 4 Technical Requirements10
- 5 Test Methods13
1 Scope
This Standard specifies the general requirements, technical requirements and test methods of sensor for automobile electrical power steering.
This Standard is applicable to the torque sensor and (angle) displacement sensor (hereinafter referred to as sensor) for automobile electrical power steering.
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 2423.6 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Eb and Guidance: Bump
GB/T 2423.8 Environmental Testing for Electric and Electronic Products Part 2: Test Methods - Test Ed: Free Fall
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 18459 Methods for Calculating the Main Static Performance Specifications of Transducers
3 Terms, Definitions and Classification
b) Non-contact sensor: in the sensor working stroke, the signal is obtained by magnetic coupling, electrical coupling, optical coupling, etc. (such as the sensor with coil induction, Hall effect, giant magnetic (MR) bridge, capacitive electric field, and other principles).
4 Technical Requirements
4.1 General requirements
4.1.1 Sensor
The sensor is manufactured according to the product drawings and technical documents approved byte prescribed procedures.
4.1.2 Working temperature
The sensor shall work properly in the temperature range of -40°C~+85°C or +105°C (the sensor for automobile electrical power steering is installed outside the cab).
4.1.3 Relative humidity
The relative humidity that the sensor can withstand shall be <=95%RH.
4.1.4 Sensor power supply or auxiliary working power
The sensor power supply uses a DC regulated power supply of 24V or less.
4.1.5 Test apparatus equipment
4.1.5.1
In the temperature range of 23°C±5°C, the measurement accuracy of the torque, (angle) displacement, current, and voltage shall be no less than 0.5%FS.
4.1.5.2
In the temperature range of 23°C±5°C, the resolution of temperature measurement shall be no less than 1°C.
4.1.5.3
In the temperature range of 23°C±5°C, the resolution of humidity measurements shall be no less than 10%RH.
4.1.6 Resistance to industrial solvent
The resistance to industrial solvent of sensor shall conform to the provisions of 3.14 in QC/T 413.
4.1.7 Surface protection properties
The surface protection properties of the sensor shall conform to the provisions of 3.15 …
4.2.8 Overvoltage
After the test, the sensor can work properly.
4.2.9 Short circuit
After the test, the sensor can work properly.
4.3 Environment
4.3.1 High temperature
After the test, the sensor can work properly, and meet the requirements of 4.2.1~4.2.3.
4.3.2 Low temperature
After the test, the sensor can work properly, and meet the requirements of 4.2.1~4.2.3.
4.3.3 High-low temperature-alternation
After the test, the sensor can work properly, and meet the requirements of 4.2.1~4.2.3.
4.3.4 Temperature/humidity combination cycle
After the test, the sensor can work properly, and meet the requirements of 4.2.1~4.2.3.
4.4 Reliability
4.4.1 Vibration
After the sweeping vibration tests (for the contact sensor, it is required to do the sweeping vibration test under the working state) of the sensor in the six directions of up and down, front and rear, left and right, no visible cracks or breaks are allowed to appear; shall meet the requirements of 4.2.1~4.2.3.
4.4.2 Vibration shock
After the test, the sensor can work properly, and meet the requirements of 4.2.1~4.2.3.
4.4.3 Endurance
The sensor shall, after reciprocating motion for 2 million times in the working stroke, work properly; the entire vehicle works >=300 thousand km with the electrical steering device.
5 Test Methods
5.2.4.2 Insulation resistance
When the withstand voltage test is required, apply a 50Hz/550V (rms) sinusoidal voltage between the sensor conductive pin and the insulation housing for 1min; then check that the insulation has no breakdown.
5.2.4.3 Lead wire tensile strength
Apply a force of 50N along the direction of the lead wire for 2min; check whether there is damage; perform the test in 5.2.1~5.2.3.
5.2.5 Drop
Place the sensor at 1m height; then drop freely (the ground is hard solid ground), for twice in the directions of up and down, front and rear, left and right; after the test, check whether the sensor can work properly.
5.2.6 Reverse connection of power supply
The sensor input is reversed by 1.1 times of the rated working voltage for 1min. After the test is completed, restore the normal connection, check whether the sensor can work properly.
5.2.7 Overvoltage
Separately perform the short-circuit BETWEEN sensor's (with a supply voltage of 12V) output signal terminal, positive terminal of the power supply, reference ground pin AND 16V power supply (as per the user's requirements) for 1min; after the test is completed, check whether the sensor can work properly.
5.2.8 Short-circuit
When the sensor works properly, separately perform short-circuit of the output signal terminal, positive terminal of the power supply, reference ground pin for 1min; after the test is completed, check whether the sensor can work properly.
5.3 Environment
5.3.1 High temperature
5.3.1.1 The sensor works properly; test as per the test B: high temperature test method stipulated in GB/T 2423.2.
5.3.1.2 Place it at the temperature of +85°C or +105°C (sensor is installed outside the cab) for 96h.
5.3.1.3 After the test is completed, directly test in the test chamber as stipulated in …
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 2423.1Environmental testing for electric and electronic products - Part 2: Test methods - Tests A: Cold
- GB/T 2423.2Environmental testing for electric and electronic products - Part 2: Test methods - Tests B: Dry heat
- GB/T 2423.6Environmental testing for electric and electronic products - Part 2: Test methods - Test Eb and guidance: Bump
- GB/T 2423.8Environmental testing for electric and electronic products - Part 2: Test methods - Test Ed: Free fall
- GB/T 2423.17Environmental testing - Part 2: Test methods - Test Ka: Salt mist
- GB/T 2423.22Environmental testing - Part 2: Test methods - Test N: Change of temperature
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Related Standards
GB/T 18459-2001 — Methods for calculating the main staticperformance specifications of transducers
GB/T 18459-2026 — Methods for calculating the main static performance specifications of transducers
GB/T 2423.1-2008 — Environmental testing for electric and electronic products - Part 2: Test methods - Tests A: Cold
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