FIELD: test engineering.
SUBSTANCE: invention refers to the control and diagnostics equipment, devices for measuring and testing, particularly, to testing rigs applied during conduction of vibration and acoustic rig tests of electrical and mechanical power assist system for a vehicle (EMPASV) under the conditions of the acoustic anechoic chamber. The rig contains the wide bearing frame with mounted tested EMPASV interacting with a loading device, measuring microphones, recording and analyzing units, and direct current power supply of the EMPASV electric motor. The tested EMPASV is mounted on the instrument panel cross-bar equipped with the electronic simulator of tachometer signal and the control panel, installed by means of mounting brackets on the wide bearing frame. EMPASV contains the input shaft with a steering wheel, on which there is a speed sensor including inertia mass with a shoulder, reduction gear, information disk, and optical sensor, from the one side, and the output shaft connected to the shaft of the loading device, from the other side.
EFFECT: high-quality conduction of acoustic measurements by means of excluding of influence of parasitic noise emission formed by technical devices, which are not a constituent part if a tested subjects.
3 cl, 6 dwg
