1 Scope
This regulation is applicable to the initial verification and subsequent verification of electrodynamic horizontal vibration generators for test with sliding table, hereinafter referred to as “horizontal vibration generator”, of which the rated sinusoidal thrust is less than 100kN.
2 Reference Documents
JJG 948-1999 "Verification Regulation of Digital Electrodynamic Vibration Testing System"
JJG 190-1997 "Verification Regulation of Electrodynamic Vibration Generator for Testing"
GB/T 11353-1989 "Auxiliary Tables for Vibration Generators - Methods of Describing Equipment Characteristics"
JB/T 6869-1993 "Specifications for the Horizontal Vibration Generator Systems (Sinusoidal)"
While applying this specification, attention shall be paid to make sure the referenced editions of the above documents are currently effective.
3 Terminology
3.1 Electrodynamic Horizontal Vibration Generator for Test
The electrodynamic vibration generator with horizontal sliding table which is used for vibration test.
3.2 Max. Pitch Moment
The ultimate moment for pitches toward front or back, which is generated by the dynamic force on the longitudinal plane vertical to the table under normal operation conditions of the horizontal vibration generator.
3.3 Max. Yaw Moment
The ultimate moment of yaws which is generated by the dynamic force on the horizontal plane of sliding table under normal operation conditions of the horizontal vibration generator.
4 General
1 Scope
2 Reference Documents
3 Terminology
3.1 Electrodynamic Horizontal Vibration Generator for Test
3.2 Max. Pitch Moment
3.3 Max. Yaw Moment
4 General
5 Requirements for Metrological Performance
5.1 Tilt Error of Table
5.2 Vibration Frequency
5.3 Indication Error of Vibration Acceleration (or Displacement)
5.4 Stability of Vibration Acceleration
5.5 Waveform Distortion of Vibration Acceleration
5.6 Acceleration of Background Noise of Horizontal Vibration Generator
5.7 Frequency Response Characteristics of Horizontal Vibration Generator
5.8 Amplitude Uniformity of Acceleration of the Table
5.9 Transverse Vibration Ratio of the Table
5.10 Frequency Sweeping Rate and Constant Vibration Accuracy
5.11 Other Technical Indexes
6 General Technical Requirements
6.1 Appearance and Accessories
6.2 Service Environment of Horizontal Vibration Generator
7 Control of Measuring Instruments
7.1 Verification Conditions
7.2 Verification Items
7.3 Verification Methods
7.4 Settlement Based on Verification Results
7.5 Verification Interval
Appendix A Methods for Determining Max. Pitch Moment and Max. Yaw Moment of Horizontal Sliding Table
Appendix B Form of Verification Certificate Inside Pages
Appendix C Form of Verification Result Notice Inside Pages
