Haptic feedback input device

• US 20050259075A1
• Filed: 05/12/2005
• Published: 11/24/2005
• Est. Priority Date: 05/18/2004
• Status: Active Grant

• Current Assignee: Alps Alpine Co., Ltd.
• Original Assignee: ALPS Electric Company Limited (Alps Alpine Co., Ltd.)
• Inventors: Hayasaka, Satoshi, Maeda, Takuya, Fukushima, Noriyuki, Matsumoto, Ken, Ishikawa, Shinji, Nonaka, Kaiji
• Granted Patent: US 7,490,530 B2
• Time in Patent Office: Days
• US Class Current: 345/161
• CPC Class Codes: G05G 2009/04718 with cardan or gimbal type joint
• CPC Class Codes: G05G 2009/04748 Position sensor for rotary movement, e.g. potentiometer
• CPC Class Codes: G05G 2009/04759 Light-sensitive detector, e.g. photoelectric
• CPC Class Codes: G05G 5/03 Means for enhancing the operator's awareness of arrival of the controlling member at a command or datum position; Providing feel, e.g. means for creating a counterforce arrangements for indicating the position of the controlling member G05G1/015
• CPC Class Codes: G05G 9/047 the controlling member being movable by hand about orthogonal axes, e.g. joysticks for switches H01H25/04
• CPC Class Codes: Y10T 74/20201 Control moves in two planes

Abstract

A haptic feedback input device includes a pair of driving levers journaled at a frame such that rotary shafts thereof are perpendicular to each other, an operating lever coupled to an intersection of the two driving levers such that it can rock, and a pair of rotary motors that apply feedback force to the operating lever via the two driving levers. In the haptic feedback input device, a pair of rotary encoders detect the relative dislocation amount of the operating level, and an absolute position detecting unit is composed of swing arms fixed to the two driving levers and photo interrupters that detect the existence of blocking portions formed at the swing arms and that output ON/OFF signals. A control unit calculates a reference position of the operating lever based on ON/OFF switching signals of the photo interrupters.

Claims

1. A haptic feedback input device comprising:

an operating member that is manually operated by an operator;

a base that supports the operating member free to move;

a relative position detecting unit that detects a moving amount of the operating member;

an absolute position detecting unit that detects a reference position of the operating member;

actuators that apply feedback force to the operating member; and

a control unit that controls the actuators based on output signals from the relative position detecting unit and the absolute position detecting unit,

wherein the absolute position detecting unit is composed of detection targets that move in conjunction with the operating member and detecting elements that detect the existence of the detection targets, respectively, and that output ON/OFF signals, and

the control unit computes the reference position of the operating member based on changes of outputs of the detecting elements.

2. The haptic feedback input device according to claim 1,

wherein each detection target occupies one side of a detecting area in which the respective detection target moves, and the control unit controls the respective actuator to be rotated clockwise or counterclockwise until the change of output occurs in the detecting element when a system is started.

3. The haptic feedback input device according to claim 2,

wherein the control unit controls the actuator to be driven in a direction where the detection target is not detected when the detecting element detects the detection target at the time when the system is started, and the control unit controls the actuator to be driven in a direction where the detection target is detected when the detecting element does not detect the detection target.

4. The haptic feedback input device according to claim 2,

wherein the control unit stops driving the actuator when the detection target reaches a location where the change of output occurs in the detecting element, and initializes the location as the reference position of the operating member.

5. The haptic feedback input device according to claim 1,

wherein the operating member includes an operating lever free to move and a pair of driving levers swinging in accordance with movement of the operating lever such that rotary shafts thereof are perpendicular to each other, and

the actuators are a pair of rotary motors that apply feedback force to the operating member via the two driving levers.

6. The haptic feedback input device according to claim 5,

wherein the detection targets are swing arms that swing in conjunction with the driving levers, respectively,

the detecting elements are photo interrupters provided in swinging ranges of the swing arms, respectively, and

the relative position detecting unit is a rotary encoder.

7. The haptic feedback input device according to claim 6,

wherein each photo interrupter outputs ON/OFF switching signals when the swing arm passes a central location of the swinging range.