{HEAD ~ control} means for supplying to the servomotor, based on the load signal and a control algorithm, a servomotor drive signal specifying servomotor operating parameters, including a rotational direction and {TAIL ~ a velocity}, sufficient to cause the servomotor to impart to the load via the support device a desired elevating velocity within a desired amount of time 
including
{ HEAD ~ control } means for supplying to the servomotor , based on the load signal and a control algorithm , a servomotor drive signal specifying servomotor operating parameters , including a rotational direction and { TAIL ~ a velocity } , sufficient to cause the servomotor to impart to the load via the support device a desired elevating velocity within a desired amount of time
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH