EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTS As independent public accountants, we hereby consent to the incorporation by reference in this registration statement of our reports dated November 24, 1999, incorporated by reference in MTS Systems Corporation's Form 10-K for the year ended September 30, 1999 and to all reference to our Firm included in this registration statement. /s/ Arthur Andersen LLP Minneapolis, Minnesota, June 12, 2000