1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW15079 Extended Stall Test for Assessment of Gear Jams Copyright 2011 General Motors Company All Rights Reserved June 2011 Originating Department: North American Engineering Standards Page 1 of 6 1 Scope Note: Nothing in this standard supercedes appl
2、icable laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. This specification assesses the robustness of regulator motor gear system against stall loads at High Temperatures by simulating creep effec
3、ts on motor gear drive. 1.2 Foreword. This specification is a comparison test for regulator systems. The voltage and line resistances do not necessarily represent the vehicle electrical architecture. 1.3 Applicability. This procedure applies to all cable-drive regulator systems. 2 References Note: O
4、nly the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 3 Resources 3.1 Facilities. The testing may be performed in any recognized structural/body test lab as long as the following conditions are o
5、bserved: 3.1.1 The test facilities and equipment shall be in good working order and shall have a valid calibration label. 3.1.2 Alternative test facilities and equipment may also be used. However, all measuring variables as specified in this specification shall be determined correctly with respect t
6、o its physical definition. 3.2 Equipment. Testing should be performed using a test fixture. The mounting locations should be identical as that used in a real vehicle. See Appendix A, Figure A1. 3.3 Test Vehicle/Test Piece. Testing must be performed on a new set of regulators and motors. 3.4 Test Tim
7、e. Calendar time: 8 days Test hours: 96 hours test + 96 hours soak Coordination hours: 16 hours (range 2 hours/day) 3.5 Test Required Information. Not applicable. 3.6 Personnel/Skills. Not applicable. 4 Procedure After the regulator has been forced into its Full Up Stall Position by the Motor Stall
8、Force, on a test fixture, it must be able to reverse from its Full Up stalled position with 8.5 V DC or less at the motor terminal (MT). 4.1 Preparation. Ensure that the window regulator is mounted in the same way as in the actual vehicle. The Load cells need to be calibrated before beginning the te
9、st. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15079 Copyright 2011 General Motors Company All Rights Reserved June 2011 Page 2 of 6
10、 4.2 Conditions. Use Hard Up Stall unless otherwise specified. 4.2.1 Environmental Conditions. All testing and soak shall be performed at hot 85 2 C unless otherwise specified. 4.2.2 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements sha
11、ll be specified on component drawings, test certificates, reports, etc. 4.3 Instructions. 4.3.1 Break in the regulator by performing the following initial cycles: 4.3.1.1 Cycle the window regulator continuously with 16.0 V at MT until first Thermal Protection Device (TPD) breakdown. 4.3.1.2 Use a st
12、all time of 1 second for up stall and down stall. 4.3.1.3 Let the motor cool to ambient. 4.3.2 Reverse Voltage Test. Apply 6 V DC at MT, in the down direction and raise the voltage in increments of 0.5 V until window regulator lowers (must reverse within 8.5 V DC or less at MT). 4.3.3 Long cycle Tes
13、t. 4.3.3.1 Cycle the motor for 60 Long cycles with 16.0 V at MT. The stall time in the up stall is 12 minutes for each cycle. Stall time at down stall is 1 second. Do not allow any reversal as a result of back drive by shorting motor terminals. 4.3.3.2 At the end of the Final cycle, stop at up stall
14、. Do not allow any reversal as a result of back drive by shorting motor terminals. 4.3.4 Soak for 12 hours at up stall. 4.3.5 Apply 6 V DC at MT, in the down direction and raise the voltage by 0.5 V increments (must reverse with 8.5 V DC or less) until window regulator lowers. 4.3.6 Repeat 4.3.3, 4.
15、3.4, and 4.3.5 until failure (motor does not reverse at 8.5 V or less at MT) or for a maximum of 500 cycles. Following the above test, the window regulator must operate without objectionable noise or bind conditions and must meet performance requirements. 5 Data 5.1 Calculations. Collect data for st
16、all forces at up stall, current and voltage traces. 5.2 Interpretation of Results. Plot of reverse voltage as a function of number of long cycles (Appendix A, Figure A2). The current and voltage traces in the form of a HIOKI plot must be presented. Refer Appendix A, Figure A3. A plot of stall force
17、vs voltage must be presented for voltages of 12.5 V at MT to 16.0 V at MT. See Appendix A, Figure A4. 5.3 Test Documentation. Not applicable. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associate
18、d with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Attachment Bar/Simulated Weight: A bar of metal that simulates the weight of the gl
19、ass. Glass Guidance System: A hardware subsystem of side-door, end-gate, or mid-gate which controls the movement of window glass. Hard Up Stall: Simulates the position of the attachment bar against hard rubber (Durometer reading 90) or metal in the up stall position. Copyright General Motors Company
20、 Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15079 Copyright 2011 General Motors Company All Rights Reserved June 2011 Page 3 of 6 Long Cycle: A cycle from full up st
21、all to down stall and back. Stall time at up stall is 12 minutes with 1 second of voltage. Stall time at down stall is 1 second. Motor Terminal Voltage: DC Voltage measured at the motor terminal (running voltage). Normal Cycle: A cycle from full up stall to down stall and back to full up stall. Stal
22、l time at up stall and down stall is 1 second. Reverse Voltage: Voltage applied at the motor terminal to unclock any gear bind resulting from gear jam. Magnitude of reverse voltage is a measure of Gear Jam. Stall Force: Force measured by the load cell when the regulator is in the full up stall condi
23、tion. Stall Time: Time for which the regulator remains in the full up or full down position. Test Fixture: Fixture that consists of a window regulator assembly mounted on a flat plate. The test fixture simulates the cross car and fore/aft body position with no system loads (seal/glass) It simulates
24、the mounting location of the window regulator glass in door and white. See Appendix A, Figure A1. Window Regulator: A hardware subsystem of glass guidance system, which provides the mechanism of glass movement. 7.2 Acronyms, Abbreviations, and Symbols. A DC Amperes Direct Current BOB Best of Best MT
25、 Motor Terminal TPD Thermal Protection Device V DC Volts Direct Current WOW Worst of Worst 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to GMW15079 9 Release and Revisions This standard was originated in February 2006. It was first approved b
26、y the Global Glass Guidance SSLT in July 2006. It was first published in August 2006. Issue Publication Date Description (Organization) 1 AUG 2006 Initial publication. 2 JUN 2011 Updated time units to spell out entire word (i.e., seconds, hours). (Glass Guidance GSSLT) Copyright General Motors Compa
27、ny Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15079 Copyright 2011 General Motors Company All Rights Reserved June 2011 Page 4 of 6 Appendix A Figure A1: Example of
28、a Test Fixture Figure A2: Example Test Data - Reverse Voltage as a Function of Number of Long Cycles (Best of Best (BOB) vs. Worst of Worst (WOW) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without li
29、cense from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15079 Copyright 2011 General Motors Company All Rights Reserved June 2011 Page 5 of 6 Figure A3: Example of Test Data - Example of Voltage and Current Traces (HIOKI Plots) Copyright General Motors Company Provided by IHS under license with Gen
30、eral Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15079 Copyright 2011 General Motors Company All Rights Reserved June 2011 Page 6 of 6 Figure A4: Exploded View of HIOKI Plot Shown Above to Illustrate Stall Force and Deceleration Time Measurements Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
