To provide an apparatus which pays attention to operation-related values such as power-saving, silence, accuracy improvement, and outputtable speed increase in an electrodynamic vibration test apparatus, takes the operation limit of a vibration generator into consideration, and calculates an optimum operation condition for allowing the operation-related values to which attention has been paid to fulfill predetermined conditions.

In order to find out the optimum operation condition, an estimated characteristics calculation means 34 calculates estimated characteristics in an estimated exciting current, which is an exciting current to be provided to an exciting coil 4 changed from a standard value. An estimated drive current calculation means 36 calculates what estimated drive current should be provided to a drive coil 10 in order to achieve required exciting force characteristics for each estimated exciting current on the basis of estimated characteristics. An estimated temperature calculation means 38 estimates the temperature of the exciting coil 4 and the drive coil 10 when the vibration generator 1 is operated by each estimated exciting current and each estimated drive current by changing the estimated cooling ability of a cooling blower 16. An operation condition selection means 40 selects the optimum operation condition on the basis of the operation-related values, to which attention has been paid, out of the ones which fulfill temperature conditions.