ideal_ttm - construct a ideal tip-tilt mirror.

Calling Sequence

[ttm]=ideal_ttm(ap, ang_vel)

Parameters

• ap : the aperture of the tip-tilt mirror.
• ang_vel : the angular velocity.
• ttm : the output tip-tilt mirror.

Description

construct a ideal tip-tilt mirror. The dynamic model does not include effects of hysteresis, and uses a constant angular velocity approximation to the mirror orientation. (i.e. the mirror moves at constant angular velocity towards its commanded position until it reaches that position, and then stops).

Examples

	asec2rad=3.1416/180.0/3600.0;
	ap=annul_ap(200,80);
	angular_velocity=100;
	ttm=ideal_ttm(ap,angular_velocity);
	ttm=set_ttm_timestamp(ttm,0.01);
	commands_vector=three_vector(asec2rad,0,1);
	ttm=set_ttm_commands_vector(ttm,commands_vector);
 

Author

Chen jingyuan, Gan guangyong (IAPCM, Beijing,China.)

See Also

ideal_ttm_transform ,   set_ttm_timestamp ,   set_ttm_commands_vector ,   ttm_update ,   tt_mirror ,