A mechanical system consists of (i) a power source and actuators that generate forces and movement, (ii) a system of mechanisms that shape the actuator input to achieve a specific application of output forces and movement, and (iii) a controller with sensors that compares the output to a performance goal and then directs the actuator input.
Committee with a continued existence, formed to do its assigned work on an ongoing basis. Budget and finance committees generally are standing committees. See also ad hoc committee.
Several committees divide their work into sub units called subcommittees. The Senate currently has 16 standing committees, and 4 permanent select or special committees. The House has 19 standing committees and 3 permanent select committees. Committee sizes range from 6 to 50 members per committee. In the House, one person may not serve on more than two standing committees and four subcommittees at one time, though waivers can be granted to serve on additional committees.