Micro movable mechanism system and control method for the same
First Claim
Patent Images
1. A micro movable mechanism system comprising:
- a micro movable mechanism;
a target position generating section which generates a signal indicative a target position of said micro movable mechanism;
a nonlinear control unit which outputs a controller output signal indicating a control value based on a difference between said target position signal and a signal indicating a current position of said micro movable mechanism; and
a root correction section which drives said micro movable mechanism based on a signal proportional to a square root of said control value.
2 Assignments
0 Petitions
Accused Products
Abstract
A micro movable mechanism system includes a micro movable mechanism. A target position generating section generates a signal indicative a target position of the micro movable mechanism. A nonlinear control unit outputs a controller output signal indicating a control value based on a difference between the target position signal and a signal indicating a current position of the micro movable mechanism. A root correction section drives the micro movable mechanism based on a signal proportional to a square root of the control value.
-
Citations
59 Claims
-
1. A micro movable mechanism system comprising:
-
a micro movable mechanism;
a target position generating section which generates a signal indicative a target position of said micro movable mechanism;
a nonlinear control unit which outputs a controller output signal indicating a control value based on a difference between said target position signal and a signal indicating a current position of said micro movable mechanism; and
a root correction section which drives said micro movable mechanism based on a signal proportional to a square root of said control value.
-
-
2. A micro movable mechanism system comprising:
-
a mirror mechanism which has a mirror surface;
a target position generating section which generates a signal indicating a target position θ
r of said mirror surface;
a mirror angle deriving section which derives a current angle θ
of said mirror surface;
a nonlinear control unit which outputs a controller output signal indicating a control value u based on an angle difference Δ
θ
between said current angle θ
of said mirror surface and said target angle θ
r; and
a root correction section which drives said mirror mechanism based on a signal of a drive voltage V proportional to a square root of said control value u such that said mirror surface is rotated. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A micro movable mechanism system comprising:
-
a mirror mechanism which has a mirror surface rotatable around first and second rotation axes;
first and second units, each of which drives said mirror mechanism to rotate said mirror surface around a relating one of said first and second rotation axes, and wherein each of said first and second unit comprises;
a target position generating section which generates a signal indicating a target position θ
r of said mirror surface for said relating rotation axis;
a mirror angle deriving section which derives a current angle θ
of said mirror surface for said relating rotation axis;
a nonlinear control unit which outputs a controller output signal indicating a control value u for said relating rotation axis based on an angle difference θ
between said current angle θ
of said mirror surface and said target angle θ
r for said relating rotation axis; and
a root correction section which drives said mirror mechanism for said relating rotation axis based on a signal of a drive voltage V proportional to a square root of said control value u for said relating rotation axis such that said mirror surface is rotated. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
-
-
54. A control method of a micro movable mechanism section, comprising the steps of:
-
(a) carrying a coarse control operation to control a current angle θ
of a micro movable mechanism section based on an angle difference Δ
θ
between said current angle and a target angle of a mirror surface of said micro movable mechanism; and
(b) When said current angle θ
converges through a coarse control operation and said light receiving area receives a beam spot of the reflected light from said mirror surface, carrying out a fine control operation to control said current angle θ
based on said angle difference Δ
θ
. - View Dependent Claims (55, 56, 57, 58, 59)
-
Specification