Pseudo force sense generation apparatus

A pseudo force sense generation apparatus comprising:

• a base;
• first to nth vibrators that make asymmetrical motions where relative positions of the vibrators to the base are fixed;
• and
• an electronic device having a fixed relative position to the base, wherein
• an ith vibrator included in the first to the nth vibrators is each capable of presenting pseudo force sense in an ith straight-line direction, where n is an integer of two or more, and i=1, . . . n,
• the ith straight-line direction is a straight-line direction along one of sides of a virtual polygon having three or more sides on a same plane,
• the electronic device is arranged in a neighborhood of a center of gravity of a system which corresponds to a region surrounded by the first to the nth vibrators and that is away from the center of gravity at a distance equal to or less than a predetermined value,
• mass per unit volume of the electronic device is greater than mass per unit volume of the base,
• a weight distribution of the system is biased toward the neighborhood of the center of gravity of the system, and
• the pseudo force sense generation apparatus makes a rotary motion centered at the neighborhood of the center of the gravity by driving of the vibrators.