{"id":901,"date":"2025-08-01T17:26:24","date_gmt":"2025-08-01T08:26:24","guid":{"rendered":"https:\/\/acoustic-measurement.com\/?post_type=technology&#038;p=901"},"modified":"2025-08-01T17:26:25","modified_gmt":"2025-08-01T08:26:25","slug":"powertrain-nvh-testing-fo-ev-and-mobility-applications","status":"publish","type":"technology","link":"https:\/\/acoustic-measurement.com\/en\/technology\/powertrain-nvh-testing-fo-ev-and-mobility-applications\/","title":{"rendered":"Powertrain NVH Testing for EV and Mobility Applications \u2014 Multiaxial Measurement of Torque, Vibration, and Noise with VSAC \u00d7 HBK Sensors \u2014"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Introduction: The EV Challenge\u2014It\u2019s Too Quiet<\/h2>\n\n\n\n<p>Electric vehicles (EVs) are remarkably quiet compared to internal combustion engines.<br>But this silence creates new challenges: <strong>even minor noise and vibration issues stand out<\/strong>, making traditional NVH testing insufficient.<\/p>\n\n\n\n<p>Accurate evaluation now requires <strong>high-resolution measurement in an acoustically optimized environment<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Choose a VSAC (Vehicle Semi-Anechoic Chamber)?<\/h2>\n\n\n\n<p>Sonora\u2019s VSAC is a specialized chamber designed for <strong>EV powertrain and mobility NVH testing<\/strong>. It offers several advantages:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Key Features<\/strong>:<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Hybrid Isolation + Absorption Structure<\/h4>\n\n\n\n<p>Blocks structure-borne noise from tires or test benches while minimizing airborne reflections.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Full Integration with Chassis Dynos &amp; Drive Units<\/strong><\/h4>\n\n\n\n<p>Ideal for dynamic noise &amp; torque fluctuation analysis under real-world simulation.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Sync with HBK Measurement Systems<\/strong><\/h4>\n\n\n\n<p>Enables synchronized data capture across sound, vibration, and torque channels.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Example Configuration: EV Drive Unit NVH Testing<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Parameter<\/strong><\/th><th><strong>System Setup<\/strong><\/th><\/tr><\/thead><tbody><tr><th><strong>Sound<\/strong><\/th><td>HBK Free-Field Microphones + PULSE or BK Connect<\/td><\/tr><tr><th><strong>Vibration<\/strong><\/th><td>Triaxial Accelerometers + LAN-XI Front End<\/td><\/tr><tr><th><strong>Torque &amp; Speed<\/strong><\/th><td>Non-contact Torque Sensor + Motor Control Integration<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u2192 Data can be <strong>synchronously logged, FFT-analyzed, and compared on a unified timeline<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Typical Evaluation Targets<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Detecting resonance shifts under torque fluctuation<\/li>\n\n\n\n<li>Frequency-domain analysis of motor shaft and inverter noise<\/li>\n\n\n\n<li>Noise behavior during acceleration\/deceleration transitions<\/li>\n\n\n\n<li>Comparing NVH profiles based on component stiffness or fastening methods<\/li>\n<\/ul>\n\n\n\n<p>This system allows manufacturers to <strong>balance acoustic comfort with drive control strategy<\/strong> in a measurable, data-driven way.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Consultation &amp; Custom Integration<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>VSAC design for EV drive unit or chassis-level NVH testing<\/li>\n\n\n\n<li>Full HBK sensor suite integration and selection support<\/li>\n\n\n\n<li>Safety and ventilation design for dyno-equipped chambers<\/li>\n\n\n\n<li>Support for ISO-compliant noise regulation measurements<\/li>\n<\/ul>\n\n\n\n<p>\u25b6 <strong>[<a href=\"https:\/\/acoustic-measurement.com\/en\/contact\/\"><strong>Contact Moritani for Consultation<\/strong><\/a>]<\/strong><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction: The EV Challenge\u2014It\u2019s Too Quiet Electric vehicles (EVs) are remarkably quiet compared to internal combustion engines.But this silence creates new challenges: even minor noise and vibration issues stand out, making traditional NVH testing insufficient. Accurate evaluation now requires high-resolution measurement in an acoustically optimized environment. Why Choose a VSAC (Vehicle Semi-Anechoic Chamber)? Sonora\u2019s VSAC [&hellip;]<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","solution_cat":[6],"class_list":["post-901","technology","type-technology","status-publish","hentry","solution_cat-tax_vsac","en-US"],"acf":[],"_links":{"self":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/technology\/901","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/technology"}],"about":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/types\/technology"}],"wp:attachment":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/media?parent=901"}],"wp:term":[{"taxonomy":"solution_cat","embeddable":true,"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/solution_cat?post=901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}