Elevator system

An elevator system, comprising:

• an elevator car;
• a counterweight;
• a traction sheave;
• a support wrapped around the traction sheave and suspending the elevator car and the counterweight, the support being driven by rotation of the traction sheave to raise and lower the elevator car;
• a compensation sheave;
• a compensation member affixed at a first end to the elevator car and at a second end to the counterweight, the compensation member being wrapped around the compensation sheave;
• and
• a first tensioner connected with the traction sheave for linearly displacing a rotational center point of the traction sheave from an initial position to induce tension of the compensation rope.

A suspension system for use with an elevator car and a counterweight, the suspension system comprising:

• a traction sheave;
• a support wrapped around the traction sheave and suspending the elevator car and the counterweight, the support being driven by rotation of the traction sheave to raise and lower the elevator car;
• a compensation sheave;
• a compensation member affixed at a first end to the elevator car and at a second end to the counterweight, the compensation member being wrapped around the compensation sheave;
• means for monitoring a frequency of the support;
• and
• means for actively controlling the frequency of the support by inducing a variation in tension of the compensation rope through at least one of:
• (a) linearly displacing a rotational center point of the traction sheave from an initial position, (b) varying an angular speed of the traction sheave, or (c) providing an oscillating angular movement of the traction sheave.